A rotor for a disc permanent magnet motor, includes: a first rotor core; a second rotor core; and a plurality of magnetic tiles. The first rotor core includes a first annular ring and a plurality of first magnetic blocks protruding at intervals from an outer side of the first annular ring in a circumferential direction, and a first groove is formed between every two adjacent first magnetic blocks. The second rotor core includes a second annular ring and a plurality of second magnetic blocks protruding at intervals from an outer side of the second annular ring in a circumferential direction, and a second groove is formed between every two adjacent second magnetic blocks. The first rotor core and the second rotor core are axially embedded with each other. The first magnetic blocks are embedded in the second grooves. The second magnetic blocks are embedded in the first grooves.
H02K 1/2795 - Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
2.
METHOD FOR ESTIMATING EXTERNAL STATIC PRESSURE IN AIR DUCT OF AIR CONDITIONING SYSTEM AND METHOD FOR CONTROLLING AIR CONDITIONING SYSTEM
A method for estimating an external static pressure (ESP) in an air duct, includes: disposing a permanent magnetic (PM) motor and a fan in an air duct, where the PM motor includes a stator assembly, a permanent-magnet rotor assembly, and a motor controller; the motor controller includes a micro control unit (MCU); and the fan is powered by the PM motor; applying a constant current to the PM motor so that the air duct outputs a constant volumetric airflow rate in a unit of cubic feet per minute (CFM); and calculating an external static pressure (ESP) on the air duct using two variables: the constant volumetric airflow rate (CFM) of the air duct and an input power (POWER) of the PM motor.
F24F 11/75 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
A motor controller includes a tap position selection circuit, a micro control unit (MCU), and an inverter circuit. The tap position selection circuit is configured to process a plurality of tap position signals transmit processed tap position signals to the MCU. The MCU is configured to output signals to control the operation of the inverter circuit. The inverter circuit includes an output terminal connected to a plurality of coil windings of a stator module of a motor. The tap position selection circuit includes a plurality of first signal input circuits for motor start and a plurality of second signal input circuits for motor stop; each tap position signal is split into a first part and a second part. The first part is input into one first signal input circuit for motor start and the second part is input into one second signal input circuit for motor stop.
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
H02P 25/03 - Synchronous motors with brushless excitation
4.
METHOD FOR CONTROLLING OPERATION OF PERMANENT-MAGNET SYNCHRONOUS MOTOR THROUGH SENSORLESS VECTOR CONTROL
A method for controlling operation of a permanent-magnet synchronous motor includes: during operation of the permanent-magnet synchronous motor, receiving, by the permanent-magnet synchronous motor, a shutdown signal from an external device; uninterruptedly outputting, by a microcontroller unit (MCU), a deceleration pulse to an inverter, instead of directly blocking a PWM pulse to the inverter, and constantly monitoring a control signal sent by the external device; during a deceleration process, when the MCU receives a new startup signal and a real-time speed Vi of the permanent-magnet synchronous motor is greater than or equal to a reference speed Vref, controlling the permanent-magnet synchronous motor to rotate at a parameter approaching to a target torque T or a target speed V corresponding to the new startup signal; and blocking, by the MCU, the PWM pulse when the real-time speed Vi of the permanent-magnet synchronous motor is lower than the reference speed Vref.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
H02P 3/18 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
(1) Compressed air pumps; dynamos; electric motors for machines; engines for industrial machinery; jet engines; motors and engines used in industrial applications; speed governors for machines, engines and motors; starters for engines; starters for motors and engines; torque converters
(2) Accumulators being electrical storage batteries; automotive battery chargers; electric accumulators for vehicles; electric batteries for vehicles; electrolysis apparatus for producing hydrogen and oxygen from water; electronic servo motor controllers; fuel cells; high tension batteries; power transformers; pressure sensors
(3) Clutches for motor vehicles; driving motors for land vehicles; electric drives for vehicles; electric motors for motor cars; engines for land vehicles; gear boxes for land vehicles; gear wheels for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; turbojet engines for land vehicles
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Clutches for land vehicles; Drive chains for land vehicles; Driving motors for land vehicles; Engines for land vehicles; Gear boxes for land vehicles; Gearing for land vehicles; Jet engines for land vehicles; Motors, electric, for land vehicles; Reduction gears for land vehicles; Transmission mechanisms for land vehicles
Dynamos; Compressed air machines; Driving motors, other than for land vehicles; Electric motors, not for land vehicles; Engines, other than for land vehicles; Hydraulic controls for machines, motors and engines; Jet engines, other than for land vehicles; Motors, other than for land vehicles; Starters for motors and engines; Torque converters, other than for land vehicles
09 - Scientific and electric apparatus and instruments
Goods & Services
Accumulators, electric; Anode batteries; Batteries, electric; Batteries, electric, for vehicles; Battery chargers; Electric sensors; Electronic equipment, namely, electrolysis cell for use in the manufacture of various ionic solutions; Fuel cells; Power controllers; Rechargeable batteries
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
dynamos; jet engines, other than for land vehicles; driving motors, other than for land vehicles; starters for motors and engines; motors, other than for land vehicles; engines, other than for land vehicles; motors, electric, other than for land vehicles; torque converters, other than for land vehicles; compressed air machines; hydraulic controls for machines, motors and engines. Fuel cells; batteries, electric, for vehicles; anode batteries; batteries, electric; battery chargers; Power banks; accumulators, electric; ionization apparatus not for the treatment of air or water; Sensors; Power controllers. gearing for land vehicles; motors, electric, for land vehicles; engines for land vehicles; driving motors for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; drive chains for land vehicles; clutches for land vehicles; gear boxes for land vehicles; jet engines for land vehicles.
A method for protecting a motor from overheating, includes: running a motor in a given parameter P and detecting a real-time temperature R of the motor; comparing the real-time temperature R with a plurality of set temperatures, the plurality of set temperatures including an overheating protection temperature Rm, shutdown temperature Rmax and recovery operation temperature Rmin, Rmin
H02P 29/60 - Controlling or determining the temperature of the motor or of the drive
H02H 7/085 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for dynamo-electric motors against excessive load
11.
ESTIMATION METHOD FOR EXTERNAL STATIC PRESSURE OF AIRFLOW SUPPLY DUCT AND CONTROL METHOD OF AIR CONDITIONING SYSTEM
Disclosed in the present invention are an estimation method for the external static pressure of an airflow supply duct and a control method of an air conditioning system. A PM motor is subjected to constant-flow control so as to enable an airflow supply duct to have a constant flow mass (CFM) output. In the estimation method for the external static pressure (ESP), the ESP is calculated and obtained by using two variables, the constant flow mass (CFM) and the motor input power POWER, and the external static pressure can be estimated without adding any additional static pressure measuring apparatus. On the basis of not adding any extra cost and not modifying the product structure, feedback data of external static pressures of the airflow supply ducts at different places of an air conditioning system can be acquired in real time, which helps to know the working situation of the whole heating ventilation and air conditioning system and perform corresponding control, thereby improving the performance. The method has a simple mathematical calculation model.
A stator lamination includes a middle part, an annular yoke, and a plurality of stator teeth. The middle part includes a central hole. The plurality of stator teeth extend from the inner side of the annular yoke and are evenly distributed. A wire slot is formed between every two adjacent stator teeth, whereby the annular yoke includes a plurality of wire slots. Each of the plurality of stator teeth includes a tooth root and a pole shoe disposed at one end of the tooth root. The stator lamination has an outer diameter ranging from 61.75 mm to 68.25 mm, and the central hole has a diameter ranging from 31.6 mm to 35 mm. The plurality of wire slots are evenly distributed around an edge of a circle, and the bottom part of each wire slot is tangent to the circle.
Disclosed in the present invention are a permanent-magnet electric motor system and a soft start method. The permanent-magnet electric motor system comprises a electric motor unit and an electric motor controller. The electric motor controller comprises a power supply circuit, an electric motor microcontroller unit (MCU) and an inverter circuit, and the electric motor controller further comprises a sampling and driving circuit and an electronic switch Q1, wherein a control end of the electronic switch Q1 is electrically connected to a signal output end of the sampling and driving circuit. The electric motor is powered on and started up, and when the electric motor MCU does not output a signal to the inverter circuit, the inverter circuit stops working; the sampling and driving circuit samples a synchronization signal of an externally inputted alternating current, analyzes and processes the synchronization signal of the externally inputted alternating current, and then controls the turning-on/turning-off of the electronic switch Q1, so as to realize stepped charging of an electrolytic capacitor C1; and after charging of the electrolytic capacitor C1 is completed, the sampling and driving circuit sends out a signal to notify the electric motor MCU that charging of the electrolytic capacitor C1 has been completed, such that the electric motor can be started up.
A fan volute assembly and an induced draft fan using same. The fan volute assembly comprises a volute body; a plurality of mounting feet are provided on the outer sidewall of the volute body; each of the mounting feet is provided with a first through hole; extension blocks are mounted at the top ends and/or the bottom ends of the mounting feet; each extension block is provided with a second through hole; the first through hole corresponds to the second through hole; each extension block is used for lengthening the corresponding mounting foot; the extension blocks protrude out of the top surface and/or the bottom surface of the volute body; the height of the extension blocks can be set according to a mounting environment of the induced draft fan, so that the length of the mounting feet can be flexibly changed. Moreover, the manufacturing of the extension blocks is simple and low-cost, the length of the mounting feet of the fan volute assembly can also be changed without re-manufacturing a volute body, and the length of the mounting feet of the already produced fan volute assembly can also be changed by additionally providing the extension blocks. By means of simple transformation, the waste of resources can be avoided, and the increase of the use cost of customers can be avoided, which are in line with the principle of green production.
Disclosed in the present invention are a BLDC motor with a networking communication function, and an electrical device. The BLDC motor comprises a motor body and a motor controller, wherein the motor body comprises a stator assembly and a rotor assembly, and the motor controller comprises a circuit board, a microprocessor, an inverter circuit and a network communication module being integrated on the circuit board. The BLDC motor also comprises several address selection leads, wherein the several address selection leads are respectively connected to several input ports of the microprocessor, and a communication address is obtained by means of signals which are given to the several address selection leads, such that the microprocessor is in networking communication with the outside by means of the network communication module. A communication address can be changed without disassembling devices and motor controllers, and no additional address identifier is required when the devices and the motor controllers leave a factory, such that complete consistency can be achieved, and production is facilitated. In the present solution, one type of software is used, and no additional identifier is required, such that production is convenient, and the change of an address is flexible.
Disclosed in the present invention is an adaptive control method based on angle-of-advance calculation for an inductive brushless electric motor. When an electric motor works at a set rotation speed and a set power, an automatic operation software module having an angle-of-advance calculation formula in an electric motor controller is started, an angle of advance is finely adjusted, and related data is recorded; and after the electric motor has been running for a period of time and after the range of fine adjustment on the angle of advance reaches a set range, all running efficiency data of the electric motor during the fine adjustment process is compared, an angle of advance corresponding to the highest running efficiency is acquired to correct the angle-of-advance calculation formula, and related parameters of the corrected angle-of-advance calculation formula are stored in a readable and erasable memory for the electric motor to call during subsequent running. A large amount of resources and time are saved on; and the obtained angle-of-advance calculation formula can be determined as the optimal angle-of-advance formula of the electric motor under this condition, such that the efficiency of the electric motor is improved, and the product competitiveness is improved.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Gearing for land vehicles; motors, electric, for land
vehicles; motors for land vehicles; driving motors for land
vehicles; reduction gears for land vehicles; transmission
mechanisms for land vehicles; drive chains for land
vehicles; clutches for land vehicles; gear boxes for land
vehicles; jet engines for land vehicles.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Gearing for land vehicles; motors, electric, for land
vehicles; motors for land vehicles; driving motors for land
vehicles; reduction gears for land vehicles; transmission
mechanisms for land vehicles; drive chains for land
vehicles; clutches for land vehicles; gear boxes for land
vehicles; jet engines for land vehicles.
19.
STEAM-WATER SEPARATOR AND FUEL CELL SYSTEM THEREOF
The present invention discloses a steam-water separator and a fuel cell system thereof. The steam-water separator is characterized by comprising a housing; a vapor-liquid separation cavity which is formed in the housing; an air inlet and an air outlet which are formed at the top of the housing and communicated with the vapor-liquid separation cavity; multiple flow channel baffles which are arranged in the vapor-liquid separation cavity; and a Tesla valve flow channel which is formed by multiple flow channel baffles in a gas flow channel between the air inlet and the air outlet. The workings of the Tesla valve flow channel equip the steam-water separator with the function of a check valve. The structure arrangement is appropriate and compact, parts are reduced, the space is saved, the production efficiency is improved, the cost is saved, and the reliability of the hydrogen circulation system of an ejector can be ensured.
B01D 45/08 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
H01M 8/04089 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
H01M 8/04119 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Gearing for land vehicles; motors, electric, for land
vehicles; motors for land vehicles; driving motors for land
vehicles; reduction gears for land vehicles; transmission
mechanisms for land vehicles; drive chains for land
vehicles; clutches for land vehicles; gear boxes for land
vehicles; jet engines for land vehicles.
21.
METHOD FOR COCONSTANT TORQUE CONTROL OF EC MOTOR IN VENTILATION SYSTEM
A method for constant torque control of an EC motor of a ventilation system includes: defining a maximum speed spd_max_ref and a minimum speed spd_min_ref of an electronically commutated motor (ECM) within a constant-torque operation range; by using a proportional integral (PI) controller, calculating an upper reference torque T_ref_up with the maximum speed spd_max_ref as a first reference speed, and calculating a lower reference torque T_ref_low with the minimum speed spd_min_ref as a second reference speed; and T_ref_up>T_ref_low; receiving an externally input torque command Tcom; comparing the torque command Tcom, the upper reference torque T_ref_up, and the lower reference torque T_ref_low to determine a target torque Tact; and controlling the ECM to operate in a constant torque mode under the target torque Tact.
Disclosed in the present invention are a fuel cell system and a control method therefor. The fuel cell system comprises a fuel cell stack module, a hydrogen supply system, an air supply system, and a cooling system, the cooling system comprising a water pump which drives a coolant to continuously flow to take away heat; and the fuel cell system is characterized in that the water pump is a water pump integrated with an expander, and comprises the expander, a water pump body, a water pump electric motor and a water pump controller, wherein the water pump controller controls the water pump electric motor to operate; the expander is coupled to one end of a rotating shaft of the water pump electric motor, and the other end of the rotating shaft of the water pump electric motor is coupled to the water pump body; and an exhaust tail gas resulting from an reaction is discharged using the fuel cell stack module, and is then input into the expander, the expander does work to drive the water pump body to operate, so as to provide power for the coolant of the cooling system to flow. The structural arrangement of the fuel cell system is rational and simple, the energy recovery problem of the exhaust tail gas of the fuel cell system is effectively solved, the utilization rate is high, and the efficiency of the fuel cell system is effectively improved.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
(1) Gearing for land vehicles; motors, electric, for land vehicles; motors for land vehicles; driving motors for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; drive chains for land vehicles; clutches for land vehicles; gear boxes for land vehicles; jet engines for land vehicles.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Gearing for land vehicles; motors, electric, for land vehicles; motors for land vehicles; driving motors for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; drive chains for land vehicles; clutches for land vehicles; gear boxes for land vehicles; jet engines for land vehicles
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Gearing for land vehicles; motors, electric, for land vehicles; motors for land vehicles; driving motors for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; drive chains for land vehicles; clutches for land vehicles; gear boxes for land vehicles; jet engines for land vehicles
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
(1) Gearing for land vehicles; motors, electric, for land vehicles; motors for land vehicles; driving motors for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; drive chains for land vehicles; clutches for land vehicles; gear boxes for land vehicles; jet engines for land vehicles.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
(1) Gearing for land vehicles; motors, electric, for land vehicles; motors for land vehicles; driving motors for land vehicles; reduction gears for land vehicles; transmission mechanisms for land vehicles; drive chains for land vehicles; clutches for land vehicles; gear boxes for land vehicles; jet engines for land vehicles.
A lead-out wire sheath and a motor applying same. The lead-out wire sheath comprises a lead clamp assembly, motor leads, and an injection molded body; the lead clamp assembly comprises an upper lead clamp fastener and a lower lead clamp fastener; the upper lead clamp fastener is provided with a plurality of lead slots for placing the motor leads; the motor leads are fixed in the lead slots by means of buckling between the lower lead clamp fastener and the upper lead clamp fastener; by means of the injection molded body, the upper lead clamp fastener, the lower lead clamp fastener, and the motor leads are integrally molded into one piece. The lead clamp assembly is used to replace first-time motor lead injection molding, thereby saving time, simplifying the technological process, increasing the tension between the motor leads and the lead clamp assembly, reducing the defective rate of products, and reducing manufacturing costs.
A strip-shaped stator core structure, a stator assembly and an electric motor. The strip-shaped stator core structure comprises several stator core units (1) connected to one another. Each stator core unit (1) comprises a yoke portion (11), and a tooth portion (12), which protrudes from an inner or outer side of the yoke portion (11), wherein only an outer surface of the tooth portion (12) is partially or completely covered with an electrophoresis protective film (2); and the yoke portions (11) of the several stator core units (1), which are connected to one another, are circularly rolled to be annular. In the strip-shaped stator core structure provided in the present solution, only the outer surface of the tooth portion (12) of each stator core unit (1) is covered with the electrophoresis protective film (2), while the yoke portion (11) of each stator core unit (1) is not covered with the electrophoresis protective film (2), such that the outline dimensions of the yoke portion (11) of each stator core unit (1) are not changed, which can effectively prevent the dimensional out-of-tolerance phenomenon of an annular stator core obtained after a strip-shaped stator core is circularly rolled, thereby effectively improving the manufacturing yield of stator cores, reducing the scrap rate of materials, and thus also reducing the manufacturing costs of electric motors.
Provided is a current distribution control method for a claw-pole motor. When an input instruction torque Tref is met, a reasonable distribution ratio of excitation current If of a rotor to current Iq of a stator armature winding enables a low total copper loss of a motor, and a distribution ratio relation is as follows: Iq=K×If, wherein Iq represents q-axis current in a rotor dq rotating coordinate system, and K represents a current distribution ratio. According to the method, in the case that nonlinear saturation of a stator and rotor magnetic circuit is considered, the total copper loss of the motor is almost minimum, the efficiency is almost optimal, calculation is simple and rapid, the influence of temperature on an efficient area is reduced, and the performance and operation reliability of the motor are improved.
H02P 21/22 - Current control, e.g. using a current control loop
H02P 25/02 - Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
Disclosed in the present utility model is an outer rotor motor, comprising an outer rotor, a stator assembly, a rotating shaft, a control circuit board, an end cover and a bearing seat. The bearing seat is mounted on the end cover; the stator assembly is sleeved outside the bearing seat; the outer rotor is sleeved outside the stator assembly; bearings are mounted at two ends of the bearing seat; the rotating shaft is supported on the bearings; the control circuit board is mounted at one end of the stator assembly; the end cover covers the outside of the control circuit board; the end cover comprises an end plate and a sleeve portion axially protruding from the edge of the end plate in an axial direction; a first protrusion protrudes from a first end surface of the end plate; the bearing seat is mounted on the first protrusion; a through hole axially passing through the end plate is formed in the center of the first protrusion; a plurality of positioning slots are recessed in the end surface of the first protrusion along the edge of the through hole; positioning protrusions matching the positioning slots protrude from the top end of the bearing seat. The present solution reduces the manufacturing difficulty of end covers, simplifies the manufacturing process of end covers, improves the production efficiency, and reduces the production cost; moreover, the motor is simple in structure and convenient to assemble.
Disclosed in the present utility model are a rotor assembly of a disc motor, and the disc motor. The rotor assembly comprises a rotor core and a plurality of brick-shaped magnetic shoes; a plurality of magnetic steel chambers distributed at intervals in the circumferential direction are formed on the rotor core; a central hole is formed in the center of the rotor core; the magnetic steel chambers are communicated with the central hole; the magnetic shoes are nested in the magnetic steel chambers; the magnetic steel chambers are arranged along a radial line S or inclines by an angle α with respect to the radial line S. The length L1 of the magnetic shoes is greater than the length L2 of the magnetic steel chambers. In the case that the height and the thickness of the rotor core are not changed, the structural deployment can further improve a magnetism gathering effect of a motor, increase the torque density of the motor, achieve a light and small size, and greatly reduce the motor cost.
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
Disclosed is an external rotor motor, comprising a motor part and an electric control part. An edge of a bottom plate extends axially out of a sleeve part, an opening of the sleeve part being covered by a baffle, and multiple heat dissipation ribs being disposed protruding and surroundingly distributed along a circumferential direction of a rotating shaft; a first air duct is formed between two adjacent first heat dissipation ribs, a ventilation opening is formed in the middle of the baffle, and multiple through holes are formed at a position of the bottom plate close to the sleeve part, each through hole being located between two adjacent first heat dissipation ribs; the ventilation opening is in communication with the through hole by means of the first air duct, a housing is installed on the sleeve part, and a centrifugal fan blade is disposed between the housing of the electric control part and the sleeve part, the centrifugal fan blade being located below the ventilation opening of the baffle; one end of the rotating shaft extends out of the bottom plate and is connected to the centrifugal fan blade. Heat in the motor part and the electric control part can be rapidly drawn to the outside of the motor part and the electric control part, making a cooling effect of a component good, improving a heat dissipation effect, and making heat dissipation of a whole machine faster.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
34.
HEATING COMBINATION SWITCH VALVE AND FUEL CELL APPLYING SAME
A heating combination switch valve and a fuel cell. The heating combination switch valve comprises a heating sheet (1), and a first switch valve (2a) and a second switch valve (2b) that are independent of each other, wherein the first switch valve (2a) and the second switch valve (2b) each comprise a valve body (21), and an inlet (22) and an outlet (23) that are provided at two ends of the valve body (21); and the heating sheet (1) is attached to surfaces of the first switch valve (2a) and the second switch valve (2b), such that the heating sheet can heat the first switch valve (2a) and the second switch valve (2b). The valve has a compact structure, has reduced parts and a reduced volume, and is convenient to maintain.
An air compressor system with a cooling function, a fuel cell system, and a control method. The air compressor system comprises a driving electric motor (1), a primary air compression system (2), a secondary air compression system (3), and an intercooler (4), wherein a temperature sensor (32) is mounted at a third air outlet (31) of the secondary air compression system (3); the temperature sensor (32) measures the temperature of air discharged from the third air outlet (31) of the secondary air compression system (3), and sends the air temperature to a fuel cell system controller; and the fuel cell system controller controls a flow rate of a cooling liquid of a cooling circulation system input into the intercooler (4) according to a temperature signal to dynamically adjust the heat dissipation capacity thereof, thereby indirectly adjusting the temperature of the air discharged from the third air outlet (31) of the secondary air compression system (3), and forming closed-loop control. The temperature of the air discharged from the third air outlet (31) of the secondary air compression system (3) can be effectively controlled in order to meet the requirements of a fuel cell stack module, thereby improving the operating efficiency and reliability of the system.
Disclosed in the present utility model is a fuel cell module and boost DC-DC combined integrated power generation system, characterized by comprising a fuel cell module and a boost DC-DC module. The fuel cell module comprises a box body; a cell stack module, a water pump, a heater, and a hydrogen circulation pump are mounted in a first cavity in the box body; the box body comprises a box cover, a box frame, and a bottom plate; and the cell stack module is mounted on the bottom plate in a supporting manner. The boost DC-DC module comprises a DC-DC box body and a DC-DC electric component assembly; the DC-DC box body is mounted on the bottom surface of the bottom plate; a second cavity is formed between the DC-DC box body and the bottom plate; and the DC-DC electric component assembly is mounted in the second cavity. The structure integrates the fuel cell module and the boost DC-DC module, such that parts are reduced, the volume is reduced, the connections of external wires can also be reduced, the space utilization rate of a fuel cell system is increased, and the structural quality is effectively controlled.
Disclosed in the present utility model are an intercooler, and a fuel cell system using same. The intercooler comprises a heat exchanger, a flow guide end cover, an air inlet interface, and an air outlet interface; a second air inlet is formed at the top of the heat exchanger and a second air outlet is formed at the bottom; the air inlet interface is formed on the right side of the flow guide end cover; an air inlet cavity is formed inside the flow guide end cover; a first air outlet is formed at the bottom of the flow guide end cover; an inclined flow guide surface is arranged at the top of the air inlet cavity; the flow guide end cover is mounted at the top of the heat exchanger so that the first air outlet is communicated with the second air inlet; when an air flow enters the air inlet cavity from the air inlet interface on the right side of the flow guide end cover, the air flow is guided by the inclined flow guide surface to the second air inlet at the top of the heat exchanger, and is then discharged from the second air outlet formed at the bottom, thereby achieving a certain angle of turning; the air outlet interface is mounted on the second air outlet. The intercooler is compact in structure and high in degree of integration, realizes 90-degree turning of an air flow, and greatly facilitates integration and arrangement of the intercooler in the fuel cell system.
Provided are a motor controller provided with a gear selection circuit and a BLDC motor, said motor controller comprising a gear selection circuit, a micro control unit (MCU), and an inverter circuit. Each gear signal M is split into two signals, which are inputted into a motor start-up signal input circuit and a motor stop signal input circuit, respectively, and the motor start-up signal input circuit and the motor stop signal input circuit output two level signals IO-a and IO-b to MCU, respectively. The motor start-up signal input circuit is provided with a threshold voltage U1, the motor stop signal input circuit is provided with a threshold voltage U2, and a potential difference is provided between the threshold voltage U1 and the threshold voltage U2. The MCU determines the start/stop state of the motor on the basis of the values of the two level signals IO-a and IO-b. Thus, the described motor controller can achieve accurate start/stop control and high reliability.
H02P 25/02 - Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
H02P 25/16 - Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
A method for controlling a fuel cell that includes an electrochemical reactor; a cooling circuit; a controller; a coolant circuit; a first temperature sensor; and a second temperature sensor. The cooling circuit includes a cooling pipe and is configured to cool the electrochemical reactor; the controller is configured to control operations of the electrochemical reactor and the cooling circuit; the cooling pipe includes a first water inlet and a first water outlet; and the coolant circuit is connected to the first water inlet and the first water outlet. The method includes comparing the first temperature of the coolant at the first water inlet to the second temperature at the first water outlet; and controlling operations of the heater and the electrochemical reactor based on the comparison result.
Disclosed in the present utility model is a fuel cell cooling and ventilating system, comprising an air compressor, an intercooler, a humidifier, a cell stack module and a box body, the box body being provided with a ventilation inlet and a ventilation outlet. The system is characterized in that the intercooler, the humidifier and the cell stack module are all arranged inside the box body; the air compressor is located outside the box body, and the air compressor conveys air to an inlet of the intercooler; cold air output from an outlet of the intercooler is split and output by a main path and a branch path; the cold air from the main path is treated by the humidifier and then sent to an air input port of the cell stack module; and the cold air from the branch path is sent to a cooling channel inlet of the air compressor, and then returns to the ventilation inlet of the box body from a cooling channel outlet of the air compressor so as to purge the box body, so that hydrogen and heat accumulated inside the box body are exhausted from the ventilation outlet. The system integrates cooling of the air compressor and ventilation of the box body, and thus has a simple structure, with less components to be arranged, thereby saving costs.
H01M 8/04014 - Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
H01M 8/04119 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
H01M 8/0662 - Treatment of gaseous reactants or gaseous residues, e.g. cleaning
41.
ROTOR OF DISC-TYPE PERMANENT MAGNET ELECTRIC MOTOR AND DISC-TYPE PERMANENT MAGNET ELECTRIC MOTOR USING SAME
Disclosed in the present invention are a rotor of a disc-type permanent magnet electric motor and a disc-type permanent magnet electric motor using same. The rotor comprises a first rotor iron core, a second rotor iron core, and a magnetic shoe, wherein the first rotor iron core comprises a first annular ring and first magnetic conduction blocks, and two adjacent first magnetic conduction blocks form a first groove; the second rotor iron core comprises a second annular ring and second magnetic conduction blocks, and two adjacent second magnetic conduction blocks form a second groove; a left magnetic steel slot and a right magnetic steel slot are formed between two side faces of the second magnetic conduction block and the two adjacent first magnetic conduction blocks, and the first top face of the second magnetic conduction block is lower than second top faces of the two adjacent first magnetic conduction blocks so as to form a top-face magnetic steel slot; the magnetic shoe comprises top magnetic steel, left magnetic steel and right magnetic steel; and the top magnetic steel is embedded into the top-face magnetic steel slot, and the left magnetic steel and the right magnetic steel are embedded into the left magnetic steel slot and the right magnetic steel slot. Hybrid magnetism gathering of the rotor is realized, a magnetism gathering effect of the electric motor is improved, the number of parts for assembling the rotor is reduced, the difficulty of the manufacturing process of the rotor is decreased, and the production efficiency of the rotor is increased.
A motor controller includes a rectifier module, an inverter circuit, an energy storage capacitor C1, a DC inductor L1, a microprocessor, and a lightning protection and surge protection circuit. The rectifier module includes an output end connected to the energy storage capacitor C1 to charge the energy storage capacitor C1; two ends of the energy storage capacitor C1 are connected to the inverter circuit to supply power to the energy storage capacitor C1. The DC inductor L1 is in series connection between a positive output end A of the rectifier module and a positive end B of the energy storage capacitor C1. The lightning protection and surge protection circuit is disposed between the rectifier module and the energy storage capacitor C1. The lightning protection and surge protection circuit includes a differential mode protection circuit and a primary common mode protection circuit.
Provided is a non-inductive vector control-based permanent magnet synchronous motor operation control method, which is characterized in that: during motor operation, when a shutdown control signal sent by an external device is received, a microprocessor MCU does not directly execute PWM pulse blocking on an inverter, but continues to output a pulse to the inverter for speed reduction, and constantly detects control signals sent by the external device; during speed reduction, when a real-time operation rotating speed Vi of the motor is greater than or equal to a set rotating speed Vref, the microprocessor MCU re-acquires a new starting control signal, then a control motor approaches a target rotating speed V or target torque T corresponding to the re-acquired new starting control signal from the current real-time operation rotating speed Vi; when the real-time operation rotating speed Vi of the motor is less than the set rotating speed Vref, the microprocessor MCU executes PWM pulse blocking, and shuts down and blocks pulses after speed reduction, so that the torque at a predetermined position of the motor can stably stop a load, thereby avoiding jitter, jerking, noise and the like, reducing current impact and prolonging the service life of the motor.
Provided is a non-inductive vector control-based permanent magnet synchronous motor operation control method, which is characterized in that: during motor operation, when a shutdown control signal sent by an external device is received, a microprocessor MCU does not directly execute PWM pulse blocking on an inverter, but continues to output a pulse to the inverter for speed reduction, and constantly detects control signals sent by the external device; during speed reduction, when a real-time operation rotating speed Vi of the motor is greater than or equal to a set rotating speed Vref, the microprocessor MCU re-acquires a new starting control signal, then a control motor approaches a target rotating speed V or target torque T corresponding to the re-acquired new starting control signal from the current real-time operation rotating speed Vi; when the real-time operation rotating speed Vi of the motor is less than the set rotating speed Vref, the microprocessor MCU executes PWM pulse blocking, and shuts down and blocks pulses after speed reduction, so that the torque at a predetermined position of the motor can stably stop a load, thereby avoiding jitter, jerking, noise and the like, reducing current impact and prolonging the service life of the motor.
Provided are an electric motor controller and an electric motor using same. The electric motor controller comprises a power supply circuit, a micro control unit (MCU), an inverter circuit and a driving circuit, wherein the power supply circuit supplies power to the micro control unit (MCU), the inverter circuit and the driving circuit; and the power supply circuit comprises a rectification circuit and a single-ended flyback-type DC-DC conversion circuit, a mains supply alternating current input is connected to an input end of the rectification circuit, an output end of the rectification circuit is connected to the single-ended flyback-type DC-DC conversion circuit, and the single-ended flyback-type DC-DC conversion circuit outputs multiple paths of isolation power supplies (200) to supply power to the micro control unit (MCU), the inverter circuit and the driving circuit at a later stage. The influence of an instantaneous overcurrent or a voltage fluctuation on multiple paths of isolation power supplies is not large, such that the stability and reliability of the control over an IGBT/MOS switch tube are ensured.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/32 - Means for protecting converters other than by automatic disconnection
A power conversion circuit and a motor controller. The power conversion circuit comprises a voltage stabilizing chip IC1, a voltage stabilizing chip IC2, a capacitor C2, a capacitor C3 and a capacitor C4. An input direct current power supply VCC is separately connected to pin 3 of the voltage stabilizing chip IC1 and pin 3 of the voltage stabilizing chip IC2; pin 1 of the voltage stabilizing chip IC2 is grounded GND; pin 1 of the voltage stabilizing chip IC1 is connected to pin 2 of the voltage stabilizing chip IC2; the capacitor C2 is connected between pin 2 of the voltage stabilizing chip IC1 and the pin 2 of the voltage stabilizing chip IC2; the capacitor C3 is connected between the pin 1 of the voltage stabilizing chip IC2 and the pin 2 of the voltage stabilizing chip IC2; the capacitor C4 is connected to the pin 2 of the voltage stabilizing chip IC1 and the pin 1 of the voltage stabilizing chip IC2; a first output power supply +VSS is led out of two ends of the capacitor C2; a second output power supply -VSS is led out of two ends of the capacitor C3; a third output power supply +VEE is led out of two ends of the capacitor C4, so that multiple output power supplies are high in voltage precision and high in stability. The power conversion circuit provides a power supply for the power conversion circuit, thereby improving the working stability of a motor.
H02M 3/10 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
47.
MOTOR CONTROLLER AND OUTER ROTOR MOTOR COMPRISING THE SAME
A motor controller includes a housing, a power circuit board, and a control circuit board. The housing includes a first mounting platform, a second mounting platform, and a side wall. There is a height difference between the first mounting platform and the second mounting platform. The first mounting platform is disposed on an upper part of the side wall, and the second mounting platform is disposed on a middle part of the side wall. The second mounting platform is disposed on one side of the first mounting platform. The first mounting platform and the side wall form an upper chamber, and the control circuit board and the power circuit board are disposed in the upper chamber. The control circuit board is closer to the first mounting platform than the power circuit board. The second mounting platform and the side wall form a lower chamber communicating with the upper chamber.
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
The present utility model discloses a power supply circuit for a motor controller, and the motor controller, comprising a three-phase filter circuit, a three-phase surge protection circuit, a three-phase rectifier circuit, a reactor L1 and an electrolytic capacitor. A three-phase AC mains input (U, V, W) is filtered by the three-phase filter circuit, passes through the three-phase surge protection circuit, and then enters an input end of the three-phase rectifier circuit. After the reactor L1 regulates a power factor, an output end of the three-phase rectifier circuit charges the electrolytic capacitor and forms a DC bus voltage (Vbus) for output. The power supply circuit is effectively resistant to the impact of a 6 kV surge, has strong anti-interference capability, can protect electronic components from being easily damaged, and can improve the stability and reliability of the motor controller.
An electric motor controller and an outer rotor electric motor using same. The electric motor controller comprises a controller housing, a power supply circuit board and a control circuit board. The controller housing comprises a first mounting platform, a second mounting platform and a side wall, wherein the first mounting platform is located at the top of the side wall, and the second mounting platform is located in the middle of the side wall; the first mounting platform and the side wall enclose an upper cavity, the control circuit board and the power supply circuit board are mounted inside the upper cavity from top to bottom, and the second mounting platform and the side wall enclose a lower cavity; and a rectifier bridge module extends out of the power supply circuit board, and the rectifier bridge module is attached to the second mounting platform to dissipate heat. A control box has a simple structure; and control boards, mounting cavities and mounting platforms having a uniform specification and size can be used for electric motors having different sizes, powers and volumes, such that the standardization and generalization of parts is achieved, the design and the production efficiency are improved, while the cost is reduced and management is simplified, and it is ensured that the heat dissipation effect of a high-power device is good, thereby meeting heat dissipation requirements of a high-power electric motor.
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 11/33 - Drive circuits, e.g. power electronics
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
50.
PHASE LOSS DETECTION CIRCUIT FOR THREE-PHASE POWER SOURCE, AND ELECTRIC MOTOR CONTROLLER FOR BLDC ELECTRIC MOTOR
A phase loss detection circuit for a three-phase power source, and an electric motor controller for a BLDC electric motor. The detection circuit comprises three rectification circuits, a step-down circuit and a comparison circuit, wherein input ends of the three rectification circuits are respectively connected to three-phase input power sources U, V, W, and output ends of the three rectification circuits are connected together to serve as an input end of the step-down circuit; and an output end of the step-down circuit is connected to an input end of the comparison circuit, and an output end of the comparison circuit serves as a phase loss signal output end of a three-phase power source. When it is detected that a phase loss occurs in an input power source, a shutdown operation can be performed immediately, thereby protecting a component and improving the stability and reliability of a circuit; and a circuit structure is simple.
G01R 29/16 - Measuring asymmetry of polyphase networks
H02H 7/09 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from norm for dynamo-electric motors against phase interruption
Disclosed is a disk-type permanent magnet electric motor, comprising a stator assembly and a rotor assembly, wherein the stator assembly and the rotor assembly are arranged one above the other to create an axial magnetic coupling, the stator assembly comprises a stator iron core, the stator iron core comprises a yoke portion and a plurality of tooth portions, a wire embedding slot is formed between two adjacent tooth portions, there are n wire embedding slots, and an outer diameter of the stator iron core is D; the rotor assembly comprises a rotor disk, a plurality of rotor iron cores, and a plurality of permanent magnets; the rotor iron core is mounted on the rotor disk; one permanent magnet is embedded between two adjacent rotor iron cores; the width H of a slot opening of the wire embedding slot meets H ≥ sin(360°/2n)*D; the stator iron core is of an open slot structure, and the width of a slot opening is correspondingly designed according to the size of the stator iron core; the amount of silicon steel used in a stator can be reduced, and thus the manufacturing cost is reduced; and an included angle α is formed between a radial line of the permanent magnet and that of the rotor assembly, that is, the rotor assembly uses an inclined slot design, such that torque pulsation of the disk-type permanent magnet electric motor can be lowered, the operating efficiency of the electric motor is improved, and the noise of the electric motor is reduced.
H02K 21/12 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
Disclosed in the present utility model is a direct-current brushless motor controller having a lightning protection and surge protection circuit, comprising a rectifier module, an inverter circuit, an energy storage capacitor C1, a direct-current reactor L1, and a microprocessor. An output end of the rectifier module is connected to the energy storage capacitor C1; both ends of the energy storage capacitor C1 are connected to the inverter circuit; a lightning protection and surge protection circuit is provided between the energy storage capacitor C1 and the rectifier module; the lightning protection and surge protection circuit comprises a differential-mode protection circuit and a primary common-mode protection circuit; the differential-mode protection circuit is connected in parallel to both ends of the direct-current reactor L1; the primary common-mode protection circuit is connected between a positive electrode output end A and a negative electrode output end F of the rectifier module. Since a discharge phase of the direct-current reactor L1 has an impact effect on an entire control circuit, the differential-mode protection circuit and the primary common-mode protection circuit are utilized to effectively prevent the occurrence of overvoltage damage in the rectifier module caused by high-voltage impact, thereby protecting the motor controller so that the motor controller is not prone to damage, and improving the stability and reliability of the motor controller.
H02M 5/42 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
H02H 9/04 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
A direct current induced draft fan includes: a volute, a wind wheel, a motor, and a locking assembly. The motor includes a motor body and a motor controller. The motor is disposed on the top of the volute, and the wind wheel is disposed in the volute. The motor is configured to drive the wind wheel to rotate. The motor controller is disposed on one side of the motor body and is fixed on the motor body through the locking assembly. The side wall of the motor controller extends from the motor body towards the volute.
Disclosed are an electric motor stator punching sheet and an electric motor using same. A central hole is provided in the middle of the stator punching sheet, the stator punching sheet comprises an annular yoke part and stator tooth parts, and a wire embedding groove is formed between two adjacent stator tooth parts; the stator tooth part comprises a tooth root part and a pole shoe part positioned at the end of the tooth root part; and the diameter D1 of an outer circle of the stator punching sheet ranges from 61.75 mm to 68.25 mm, the inner diameter D2 of the central hole ranges from 31.6 mm to 35 mm, the groove bottoms of the wire embedding grooves are evenly distributed along the circumference and are tangent to a circle, the diameter D3 of the tangent circle ranges from 54.72 mm to 60.48 mm, the tooth width L1 of the stator tooth part ranges from 4.75 mm to 5.25 mm, the thicknesses H1 of the pole shoe part ranges from 0.3* L1 to 0.45* L1, 8 stator tooth parts are provided, and 8 wire embedding grooves are provided. The structure is simple and the manufacturability is good, the size structure of a stator iron core is optimized, the thicknesses of the pole shoe part is increased, more uniform magnetic flux density distribution of all parts of the stator iron core is realized, and the phenomenon of local magnetic saturation is reduced, so that the working efficiency of the electric motor is improved, and the service life of the electric motor is prolonged.
Disclosed in the present utility model are a stator punching piece, a stator assembly applying same, and an electric motor. The stator punching piece comprises an annular yoke portion and stator teeth portions; wire embedding grooves are formed between the stator teeth portions; there are 36 wire embedding grooves; a center hole is provided on an the inner side of each stator teeth portion; the outer diameter D2 of the annular yoke portion is in the range of 155 mm to 165 mm; the inner diameter D3 of the center hole of the stator teeth portions is in the range of 89 mm to 99 mm; the bottoms of the wire embedding grooves are uniformly arranged along the circumference and are tangent to a circle; the tangent circle diameter D1 is in the range of 122.9 mm to 132.9 mm; the teeth width L4 of the stator teeth portions is in the range of 3.6 mm to 4.4 mm; the groove opening width L1 of the wire embedding grooves is in the range of 1.6 mm to 2.4 mm; the groove shoulder width L2 of the wire embedding grooves is in the range of 4.02 mm to 4.82 mm; the inner groove height H1 of the wire embedding grooves is in the range of 11.4 mm to 13.4 mm; and the bottom width L3 of the wire embedding grooves is in the range of 6 mm to 7 mm. Upon calculation, under the same conditions and by using the above structure, the fabrication costs for an electric motor are reduced by approximately 7% on the premise that the energy efficiency and output power of the current electric motor are guaranteed to be unchanged. In other words, insofar as the overall performance of the electric motor is unchanged, the fabrication costs for the electric motor can be effectively reduced.
An air blower, including a volute, a centrifugal wind wheel, and a motor. The volute includes an end plate, a side plate extending from an edge of the end plate, and a cavity formed by the end plate and the side plate; the centrifugal wind wheel is disposed in the cavity; the end plate includes an air inlet, and two ends of the side plate are disposed side by side to form an air outlet; the end plate further includes a support beam opposite to the air inlet, and the motor is disposed on the support beam.
A direct-current induced draft fan, comprising a volute (1), a wind wheel (2), and a motor (10). The motor (10) is mounted at the top end of the volute (1); the motor (10) comprises a motor body (3) and a motor controller (4); the wind wheel (2) is mounted in the volute (1); the motor (10) drives the wind wheel (2) to rotate; the motor controller (4) is located on one side of the motor body (3) and is mounted on the motor body (3) by means of locking assemblies (5); the thickness of the motor controller (4) extends from the top of the motor body (3) to the volute (1). The overall structure of the fan is compact, the overall axial length of the induced draft fan is decreased, the overall occupied space of the induced draft fan is reduced, and load mounting is facilitated.
r) rotor reference frame to obtain the angles between the current vector, the voltage vector, and the rotor position; obtaining the target voltage value and the target voltage angle by using the obtained angles to obtain the target phase voltage values for regulation. The method is simple in controlling the motor, improves the control efficiency and reliability, and improves the control accuracy.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
H02P 21/22 - Current control, e.g. using a current control loop
H02P 25/024 - Synchronous motors controlled by supply frequency
H02P 21/00 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
H02M 7/5387 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
Provided are a volute fan and an exhaust fan using same, comprising a volute (21), a centrifugal wind wheel (22), and a motor (23); the volute (21) comprises an upper end plate (211) and a volute side plate (212) extending from the edge of the upper end plate (211) toward one end; a cavity (213) used for holding the centrifugal wind wheel (22) is formed between the upper end plate (211) and the volute side plate (212); a first air inlet (2111) and a first air outlet (2121) are arranged on the upper end plate (211) and the volute side plate (212), respectively; a lateral beam support (2112) is arranged at the position of the first air inlet (2111) of the upper end plate (211); the motor (23) is mounted on the lateral beam support (2112); the structure has a simple mounting structure between the volute (21) and the motor (23), the structural arrangement is reasonable, the number of mounting component parts is reduced, and costs are reduced.
An adapter for an induced draft fan includes an installation section; a transition section; and an exit section. The installation section and the exit section are disposed on two ends of the transition section, respectively. The installation section includes an inner ring, an outer ring, a connection plate, and a water storage cavity. The outer ring includes a first end and a second end; the first end of the outer ring is connected to the transition section; the second end of the outer ring is connected to a first end of the inner ring via the connection plate. The inner ring, the connection plate, and the outer ring are connected one by one to form the water storage cavity. The outer ring includes at least one drain hole communicating with the water storage cavity; and a drain pipe is disposed on the outer ring.
An HVAC system control unit and an HVAC system. The HVAC system control unit comprises a first functional module, i.e. a main control module (7) which is used for receiving a control signal of an external temperature controller, and controlling several relay modules (8), wherein the main control module (7) further communicates with an electric motor control unit; and second functional modules, i.e. the relay modules (8), wherein at least one relay is included and is used for controlling the start-up and shutdown of a compressor, a resistance wire or other external devices. Each of the functional modules is provided with an independent metal or plastic shell (1, 1b), the functional modules are connected by means of mutually fitted connection members, such that the power or a control signal is transmitted between the functional modules, and the functional modules are assembled and mounted to form the HVAC system control unit. The production mode is flexible and convenient, and has a high adaptability; and the research and development period can be shortened. The HVAC system control unit is quickly and conveniently produced, and has a relatively high operation reliability; and after-sales maintenance is facilitated, and the maintenance cost is reduced.
H02P 6/04 - Arrangements for controlling or regulating the speed or torque of more than one motor
H02P 1/54 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors
H05K 7/00 - Constructional details common to different types of electric apparatus
H05K 5/00 - Casings, cabinets or drawers for electric apparatus
H05K 5/02 - Casings, cabinets or drawers for electric apparatus - Details
F24F 11/86 - Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
F24F 11/70 - Control systems characterised by their outputs; Constructional details thereof
F24F 11/42 - Defrosting; Preventing freezing of outdoor units
G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
An induced draft fan includes a motor, a volute, a wind wheel, and a conversion interface. The volute includes a cavity for accommodating the wind wheel. The volute further includes a bottom surface and a side surface. The bottom surface includes an air inlet and the side surface includes an air outlet. The air inlet and the air outlet communicate with the cavity. The conversion interface includes a connection section, a transition section, and an exit section. The connection section and the exit section are disposed on two ends of the transition section, respectively. The transition section tilts upward so that the exit section and the connection section are staggered with each other. The connection section includes a rectangular hollow frame including an upper side plate, a lower side plate, a left side plate, and a right side plate.
A volute assembly includes a volute body, a cover plate, and a seal. The volute body includes a top plate, a side plate protruding axially from an edge of the top plate, a cavity formed by the top plate and the side plate, and an exhaust duct disposed on the side plate and communicating with the cavity. The side plate includes a first bottom edge and a plurality of clamping blocks disposed at intervals on the first bottom edge. The cover plate includes a bottom plate and an annular sleeve surrounding the bottom plate. The annular sleeve includes a second bottom edge and a flange protruding from the second bottom edge. The flange includes a plurality of buckles disposed at intervals. The seal is disposed around the annular sleeve and is supported by the flange. The side plate is matched with the annular sleeve in shape.
A combined motor controller, including: a first function module, including at least one power module powered by the mains supply to output a VDC power supply to power other modules; a second function module, including at least one motor control module including a microprocessor control unit (MCU) and an IGBT inverter; and a third function module, including at least one I/O module configured to transmit signals between a system main control board or a peripheral device and the motor control module. Each function module is provided with an independent metal or plastic shell and a first circuit board located in the shell, and the first function module, the second function module and the third function module are connected by mutually matched connectors for power supply or control signal transmission between the function modules.
H02K 11/33 - Drive circuits, e.g. power electronics
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
Disclosed is a novel motor structure. The present invention comprises a rotor assembly and a stator assembly, wherein the stator assembly comprises several E-shaped stator iron cores uniformly distributed in a circumferential direction, the several E-shaped stator iron cores being distributed on the periphery of the rotor assembly; the E-shaped stator iron cores each comprise a yoke portion, and a left pole arm, a middle pole arm and a right pole arm which extend out from the yoke portion, end portions of the left pole arms, the middle pole arms and the right pole arms respectively forming magnetic pole faces, the periphery of the rotor assembly is surrounded by several magnetic pole faces at intervals, and winding parts of coil windings wound on all the E-shaped stator iron cores are the same, i.e. the coil winding being wound on the middle pole arm of each E-shaped stator iron core or the coil winding being wound on both the left pole arm and the right pole arm of each E-shaped stator iron core. The present application uses an E-shaped stator iron core structure, so that a stator notch opening is small, and the distribution density of magnetic pole faces is increased, thereby reducing the rotating pulsation of the motor and increasing the efficiency of the motor.
Disclosed are an electric motor control unit having redundant control and an assembly method therefor, comprising: a power supply module, connected to mains electricity and outputting a corresponding VDC direct-current power supply to power other modules; an electric motor control module, one electric motor control module controlling one electric motor body; an I/O module, used for signal transmission between a client mainboard or a peripheral device and the electric motor control module; a redundant control module, the function thereof being to activate one standby functional module when any of the functional modules described above fails, thus ensuring that a client system can still work smoothly; and the standby functional module, a module having same functions as a first functional module or a second functional module or a third functional module. The functional modules are assembled and mounted together to form the electric motor control unit, the production thereof is flexible and convenient, has strong adaptability, and reduces research and development cycles; the production is quick and convenient, operational reliability is increased, aftersales maintenance is facilitated, and maintenance costs are reduced.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
67.
COMBINED ELECTRIC MOTOR CONTROLLER AND COMBINATION METHOD THEREFOR
Disclosed are a combined electric motor controller and a combination method therefor. The combined electric motor controller comprises a power source module, an electric motor control module and an I/O module, wherein one electric motor control module controls one electric motor body, comprises a microprocessor, an IGBT inversion component and a heat dissipation apparatus, receives the power supply of a VDC power source and an externally input control signal, and outputs a power source to the electric motor body, so as to control a rotation speed or a torque or an air volume; the I/O module is used for carrying out signal transmission between a system main control board or a peripheral device and the electric motor control module; and each functional module is provided with an independent metal or plastic shell and a circuit board located in the shell, the functional modules are connected to each other by means of mutually matched connecting pieces, and are used for transmitting the power source or the control signal between the functional modules, and the heat dissipation apparatus is mounted inside or outside of the shell. The production mode of the combined electric motor controller is flexible and convenient, the adaptability thereof is high, the research and development period thereof is shortened, production is quick and convenient, maintenance and replacement are convenient, and maintenance costs are reduced.
Disclosed are an electric motor control unit having redundant control and an assembly method therefor, comprising: a power supply module, connected to mains electricity and outputting a corresponding VDC direct-current power supply to power other modules; an electric motor control module, one electric motor control module controlling one electric motor body; an I/O module, used for signal transmission between a client mainboard or a peripheral device and the electric motor control module; a redundant control module, the function thereof being to activate one standby functional module when any of the functional modules described above fails, thus ensuring that a client system can still work smoothly; and the standby functional module, a module having same functions as a first functional module or a second functional module or a third functional module. The functional modules are assembled and mounted together to form the electric motor control unit, the production thereof is flexible and convenient, has strong adaptability, and reduces research and development cycles; the production is quick and convenient, operational reliability is increased, aftersales maintenance is facilitated, and maintenance costs are reduced.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
69.
INTER-COOLING AND HUMIDIFICATION APPARATUS AND FUEL CELL SYSTEM USED THEREBY
Disclosed are an inter-cooling and humidification apparatus and a fuel cell system used thereby. The apparatus comprises an air intake duct, a heat exchange apparatus, a humidification module and a sleeve shell, wherein the heat exchange apparatus is sleeved on the air intake duct; the humidification module is sleeved on the heat exchange apparatus; the sleeve shell is sleeved on the humidification module; one end of the sleeve shell is provided with a first air flow outlet; dry hot air enters from one end of the air intake duct, flows out in a radial direction, and is subjected to temperature reduction treatment in the heat exchange apparatus and humidification treatment in the humidification module to form low-temperature humid air; and the humid air flows out from the first air flow outlet. In the structure, the functions of inter-cooling and humidification are integrated, such that the structure is simple and compact, the amount of occupied overall layout space of a fuel cell system is small, the mutual contact area of the heat exchange apparatus and the humidification module is increased, an airflow circulation capability is increased, the overall efficiency of the fuel cell system is increased, and parts and costs are reduced.
A rotor structure of an external rotor motor, and the external rotor motor applying same. The rotor structure comprises a rotor housing (1) and a plurality of permanent magnets; the rotor housing (1) comprises an end plate (11) and a sleeve housing (12) extending from the edge of the end plate (11); a cavity (13) is formed in the middle of the sleeve housing (12); the plurality of permanent magnets are circumferentially mounted on the inner wall surface of the sleeve housing (12) at intervals; a water dripping hole (14) is provided on the end plate (11); the water dripping hole (14) is communicated with the cavity (13); a hole plug (2) is mounted outside the water dripping hole (14); a drainage structure is provided on the hole plug (2); the drainage structure is communicated with the water dripping hole (14); a labyrinth sealing structure is formed between the drainage structure and the water dripping hole (14), so that the motor can work even in a severe environment. External sundries such as silt or rainwater can be prevented from entering the motor through the water dripping hole, the water draining effect is good, normal operation of the motor is guaranteed, and thus, the service life of the motor is prolonged.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Disclosed in the present utility model is a plastic package motor having a fireproof structure, comprising a plastic package stator, a rotating shaft, a rotor assembly, an upper end cover, and a lower end cover. The rotating shaft is mounted on the rotor assembly; the rotor assembly is mounted in the plastic package stator; the upper end cover and the lower end cover are mounted together to form a second cavity; and the plastic package stator and the rotor assembly are mounted in the second cavity; the plastic package stator comprises a stator assembly, a wire clip, and a plastic package; the plastic package is wrapped outside the stator assembly and the wire clip, and part of the wire clip protrudes out of the plastic package; a raised portion protrudes outward from the side surface of the upper end cover; an accommodating cavity is formed inside the raised portion; the raised portion is internally provided with a wire outlet hole; the wire clip is located in the accommodating cavity and directly faces the wire outlet hole; a wire sheath is mounted in the wire outlet hole; and a lead-out wire passes through the wire sheath and is led out of the upper end cover. The wire clip facilitates protecting the lead-out wire during injection molding, and the raised portion increases the space inside the motor, thus facilitating accommodation of the wire clip and the wire sheath. The wire sheath can not only effectively protect the lead-out wire but is easy to mount, and thus, the production efficiency of the plastic package motor is improved.
An ECM including a motor body and a motor controller. The motor body includes a stator assembly. The stator assembly includes a stator winding. The motor controller includes a control circuit board, and the control circuit board includes a power source, a microprocessor, an insulated-gate bipolar transistor (IGBT) inverter circuit, and a plurality of universal interface modules. The motor controller is configured to be connected to a main control board of a heating, ventilation, and air conditioning (HVAC) system, to receive a command from the HVAC system, and to control the operation of the motor body based on the command. The power source is configured to supply power to each electric circuit of the motor controller. The IGBT inverter circuit includes an output terminal; the stator winding includes a coil winding; and the output terminal is connected to the coil winding.
H02K 11/33 - Drive circuits, e.g. power electronics
F24F 11/72 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
H02P 6/16 - Circuit arrangements for detecting position
F24F 11/89 - Arrangement or mounting of control or safety devices
73.
ECM MOTOR COMPATIBLE WITH MULTIPLE UNIVERSAL INTERFACES, HEATING, VENTILATION, AND AIR CONDITIONING (HVAC) SYSTEM, AND SIGNAL CONVERSION METHOD
Disclosed in the present invention are an ECM motor compatible with multiple universal interfaces, a heating, ventilation, and air conditioning (HVAC) system, and a signal conversion method. The ECM motor comprises a motor body and a motor controller. The motor controller comprises a control circuit board. The control circuit board comprises a power supply portion, a microprocessor, an IGBT inverter circuit, and multiple universal interface modules. The multiple universal interface modules refer to at least two of a multi-pin communication interface module, a multi-wire communication interface module, a multi-position control interface module, or a PWM signal communication interface module. According to the interface signal condition of an HVAC system to be connected, one universal interface module can be selected from the multiple universal interface modules so as to establish a communication mode connection between the microprocessor and the HVAC system. The connection between a control motherboard of the HVAC system and the motor can be well coordinated, the compatibility is improved, and great convenience is brought to the maintenance of the after-sales market.
Disclosed in the present utility model is an external rotor motor, comprising a rotating shaft, a stator assembly, an external rotor and a sleeve seat; the stator assembly comprises a stator iron core, an end insulation and a coil winding, the sleeve seat comprises a bottom plate and a sleeve protruding upward from the middle of the bottom plate, the external rotor comprises a housing sleeve and several permanent magnets mounted on an inner wall face of the housing sleeve, a cavity is provided in the housing sleeve, and a flange extends outward from an opening of the housing sleeve, a centrifugal fan is mounted at the bottom of the flange, and an air outlet is provided between the centrifugal fan and the bottom plate; a labyrinth air inlet is provided on the top of the housing sleeve, the labyrinth air inlet, the cavity and the air outlet are in communication, air enters the motor from the labyrinth air inlet and then is discharged from the air outlet, and when the motor is running, the external rotor rotates to drive the centrifugal fan to rotate together with the external rotor, and the centrifugal fan draws out of the air from the interior of the motor, so that the airflow circulates inside the motor in a directional manner so as to dissipate heat, effectively reducing the winding temperature, having good heat dissipation effect, and ensuring normal operation of the motor.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Disclosed is a constant air volume induced draft fan comprising a volute (1), a wind wheel (2) and an electric motor (3), wherein the electric motor (3) is installed outside the volute (1) by means of an installation support (4); the electric motor (3) comprises an electric motor body and an electric motor controller; the electric motor body comprises a stator assembly (31), a permanent magnet rotor assembly (32), a rotating shaft (33) and an electric motor shell (34); the wind wheel (2) is installed in the volute (1); the electric motor (3) drives the wind wheel (2) to rotate; the electric motor controller comprises an electric motor operation parameter detection circuit and a microprocessor; and the microprocessor, according to an input target air volume value IN-CFM and a function relational expression P/a ＝ f(n/b) of constant air volume control, enables the induced draft fan to output a constant air volume by controlling the input power and rotating speed, wherein P is the electric motor input power, n is the electric motor rotating speed, a is a power proportionality coefficient, and b is a proportionality coefficient of the rotating speed. By increasing the power proportionality coefficient a and the rotating speed proportionality coefficient b, the induced draft fan can meet the requirements of different working environments.
Disclosed are a hydrogen circulating pump assembly and a fuel cell. The hydrogen circulating pump assembly comprises a hydrogen circulating pump (100), wherein the hydrogen circulating pump (100) comprises an electric motor, a wind wheel and a pump shell (1), a pump cavity is provided in the pump shell (1), the wind wheel is installed in the pump cavity, the electric motor drives the wind wheel to rotate, a gas inlet (11) and a gas outlet (12) are provided in the pump shell (1), the pump cavity is in communication with the gas inlet (11) and the gas outlet (12), the gas inlet (11) is connected to a heating device (2), and the gas outlet (12) is connected to a filtering device (3); and recovered gas is firstly treated by means of the heating device (2), then enters the hydrogen circulating pump (100), reaches the filtering device (3) from the gas outlet (12) of the hydrogen circulating pump (100), and is discharged after same is treated by means of the filtering device (3), such that the technical problem of water in a hydrogen circulating system being frozen when same is in a low-temperature state is solved, and extra power consumption of the whole system is reduced, the efficiency of the whole system is improved, energy is saved on, and the cost is reduced. The filtering device is connected to the gas outlet, such that ice particles are prevented from being output to a stack of the fuel cell without being completely melted, and the safety and reliability are better.
Disclosed in the present utility model are a fuel cell tail exhaust hydrogen concentration detection and mixing dilution device and a fuel cell. The device comprises a hydrogen concentration detection unit and a gas mixing injection dilution unit, wherein the hydrogen concentration detection unit comprises a tail exhaust main pipeline, a sampling branch pipeline, a gas-liquid separator and a hydrogen concentration sensor, the gas mixing injection dilution unit comprises an injection three-way pipe and a diluted gas introduction pipeline, a main inlet of the injection three-way pipe is connected to an upstream section of the tail exhaust main pipeline, a branch inlet of the injection three-way pipe is connected to one end of the diluted gas introduction pipeline, an outlet of the injection three-way pipe is connected to a downstream section of the tail exhaust main pipeline, an injection nozzle is arranged at the joint between the main inlet and the branch inlet, negative pressure is formed at the branch inlet under the action of the injection nozzle, external cold air enters the tail exhaust main pipeline by means of the diluted gas introduction pipeline to achieve a dilution effect, and the device is simple in structure, low in cost and high in reliability.
Disclosed is a fuel cell system, comprising a stack module (300), an electrical control assembly (400), a hydrogen path system (500), a cooling circuit system, and an air path system, wherein the hydrogen path system (500) comprises a stop valve (9), a proportional valve (8) and an ejector (6); high-pressure hydrogen passes through the stop valve (9), the proportional valve (8) and the ejector (6) and is then connected to a hydrogen input port of the stack module (300); and a hydrogen return output port of the stack module (300) is connected to a hydrogen return port of the ejector (6). The system is characterized in that at least one stage of a moisture separator is arranged between the hydrogen return output port of the stack module (300) and a hydrogen return ejection port (32) of the ejector (6); mixed gas which is discharged from the hydrogen return output port of the stack module (300) is treated and separated by the at least one stage of the moisture separator to obtain water and then enters the hydrogen return ejection port (32) of the ejector (6); and the moisture separator is provided with a moisture discharge port for discharging water. After moisture in the mixed gas is separated by means of the at least one stage of the moisture separator, the mass of the ejected mixed gas is reduced, such that the low-power hydrogen return requirement is met, the integration level is high, and installation is easy and convenient.
Provided is an induced draft fan, comprising a motor (1), a volute (2), a wind wheel (3), and a conversion interface (4). A cavity (21) used for accommodating the wind wheel (3) is disposed in the middle of the volute (2); an air inlet (22) and an air outlet (23) are disposed on the bottom and side surfaces, respectively, of the volute (2); the conversion interface (4) is mounted at the air outlet (23). The conversion interface (4) comprises an inlet section (41), a transition section (42), and an outlet section (43); the inlet section (41) and the outlet section (43) are located at the two ends of the transition section (42), respectively; the transition section (42) is inclined upward such that the positions of the outlet section (43) and the inlet section (41) are staggered; the inlet section (41) is a rectangular hollow frame; the inlet section (41) is composed of four side panels; the four side panels comprise an upper side panel (411), a lower side panel (412), a left side panel (413), and a right side panel (414). A boss (44) parallel to the upper side plate (411) is provided on the top of the inlet section (41); a groove (45) is formed between the boss (44) and the upper side plate (411); when the conversion interface (4) is mounted at the air outlet (23), the inlet section (41) is nested in the air outlet (23), and the upper top plate (231) of the air outlet (23) is inserted into the groove (45). The mounting structure of the induced draft fan is simple, the components are small, manufacturing costs are relatively low, and sealing tightness is good, improving the performance and efficiency of the fan and reducing safety hazards caused by air leakage.
Disclosed is an induced draft fan, comprising a volute (1), a wind wheel (2) and an electric motor (3), wherein the volute (1) comprises a volute casing (11) and a cover plate (12) mounted at the bottom of the volute casing (11), and an air inlet (121) is provided in the middle of the cover plate (12); the electric motor (3) comprises a rotating shaft (31), the front end of the rotating shaft (31) of the electric motor (3) extends into an inner cavity (10) of the volute casing (11) and is mounted together with the wind wheel (2); and the wind wheel (2) comprises a rear wheel disc (21) and blades (22), several blades (22) protrude from a bottom face (213) of the rear wheel disc (21), the several blades (22) are distributed at intervals in a circumferential direction around a mounting base (211), and an air channel (23) is formed between two adjacent blades (22). Each blade (22) comprises an inner side face (221) and an outer side face (222), wherein in the same blade (22), at least part of the inner side face (221) is inclined relative to the outer side face (222), and at least part of the inner side face (221) is inclined relative to the bottom face (213) of the rear wheel disc (21). Thus, pressure generated by the induced draft fan can be improved in an effective space, the pressure and the flow speed are uniform, surging flow is reduced, and loss caused by airflow nonuniformity in the volute can be reduced, thereby improving the operation efficiency of the induced draft fan and reducing the noise and vibration of the induced draft fan.
Disclosed are a compatible switching circuit board and an electrical equipment system using same. The compatible switching circuit board is mounted between an electrical equipment main control circuit board and a motor, and comprises a power supply circuit, a switching board microprocessor, a 16-pin jack, a signal conversion circuit, a 4-pin jack, a serial communication circuit, a DM motor interface circuit, and a DM motor jack. The 16-pin jack is connected to the switching board microprocessor by means of the signal conversion circuit, the 4-pin jack is connected to the switching board microprocessor by means of the serial communication circuit, and the switching board microprocessor is connected to the DM motor jack by means of the DM motor interface circuit. According to the compatible switching circuit board, connection between the electrical equipment main control circuit board and the motor can be well coordinated, compatibility is improved, great convenience is brought to maintenance in the after-sales market, and functions of the electrical equipment main control circuit board can be expanded.
H02P 23/00 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
A fireproof plastic package motor, comprising a plastic package stator assembly (1), a rotor assembly (2), and a rotating shaft (3). The plastic package stator assembly (1) comprises a stator core (11), an end insulation (12), a coil winding (13), and a plastic package body (14). The plastic package body (14) wraps the stator core (11), the end insulation (12) and the coil winding (13). The rotating shaft (3) is mounted on the rotor assembly (2). A first cavity (10) is formed in the middle of the plastic package stator assembly (1). The rotor assembly (2) is mounted in the first cavity (10). The motor further comprises an upper end cover (41) and a lower end cover (42). The upper end cover (41) and the lower end cover (42) are mounted together to form a second cavity (40). The plastic package stator assembly (1) and the rotor assembly (2) are mounted in the second cavity (40). A part of the outer side face of the stator core (11) protrudes out of the outer side face of the plastic package body (14) to form a connecting portion (115), and the inner side face of the upper end cover (41) or/and the inner side face of the lower end cover (42) are in close contact with the connecting portion (115) to fix the plastic package stator assembly (1) in the second cavity (40). The plastic package body (14) has a small volume and uses less BMC plastic package material, thus the overall size of the motor is small. The plastic package stator assembly (1) is completely sealed in the second cavity (40) by the upper end cover (41) and the lower end cover (42), and the fireproof effect is thus good.
A parameterless position-sensorless permanent magnet synchronous motor control method based on maximum-torque-per-ampere (MTPA) is disclosed. The method comprises a current control mode and comprises: (1) calculating a target dr-axis current value Id_r* and a target qr-axis current value Iq_r* of a target current vector Idq in a (dr, qr) rotor reference frame by using a target current value Idq* of the target current vector Idq and a preset current-rotor angle .GAMMA.; (2) looking up a target voltage-rotor angle .ALPHA. through a MTPA look-up table ; (3) calculating a dv-axis current value Id_Ref and a qv-axis current value Iq_Ref; and (4) obtaining a target voltage angle .THETA.V. According to the method, an algorithm is simplified, the operation is simple, the occupation of chip resources is reduced, the cost is reduced, and a bottleneck problem of high dependence on a motor resistance Rs, inductance Lq, Lq and magnetic flux .LAMDA.m is solved.
A parameterless position-sensorless permanent magnet synchronous motor control method based on MTPA. The control method comprises a current control mode and comprises steps: step 1, receiving a given current Idq* and a γ angle inputted by a user, and calculating Id_r* and Iq_r*; step 2, looking up a corresponding α angle in an MTPA data table according to the Id_r* and the Iq_r*; step 3, calculating Id_Ref and Iq_Ref by utilizing the α angle, the Id_r* and the Iq_r*; and step 4, obtaining θ(v) by inputting the current Iq_Ref and a feedback current Iq of real-time operation of a motor into a Phase-Locked Loop (PLL), and obtaining Vq by means of PI processing of the current Id_Ref and a feedback current Id of real-time operation of the motor. Because Vd=0，Vdq=Vq in an MTPA mode, Vα and Vβ can be obtained by using θv and Vdq, and current control can be achieved. According to the method, an algorithm is simplified, the operation is simple, the occupation of chip resources is reduced, the cost is reduced, and a bottleneck problem of high dependence on a motor resistance Rs, inductance Lq, Lq and magnetic flux λm is solved.
A volute assembly including a volute and a cover plate. The volute includes a cavity. The cover plate is disposed on the volute and covers the cavity. The cover plate includes an air inlet; the volute includes an exhaust duct. The exhaust duct includes an air outlet. The exhaust duct includes a first part, a second part, and a third part sequentially connected in that order. The first part is directly connected to the volute. The air outlet is disposed on the third part. The inner diameter of the second part increases in the direction from the first part to the third part.
Disclosed are a volute assembly (1) and an induced draught fan using sarne. The volute assembly comprises a volute (10) and a cover plate (11) installed at the bottom of the volute, wherein an inner cavity (12) capable of installing a wind wheel is enclosed by the volute and the cover plate, an air inlet (111) is provided in the cover plate, an exhaust pipeline (13) extends out of a side face of the volute, an air outlet (130) is formed in the end of the exhaust pipeline, the exhaust pipeline comprises a connecting section (131), a diffusion section (132), and an installation section (133), one end of the connecting section is connected to the volute, the other end of the connecting section is connected to the installation section by means of the diffusion section, the air outlet is provided in the end of the installation section, and the inner diameter D1 of the diffusion section gradually increases from the connecting section to the installation section. The volute injection rnolding difficulty and injection rnolding cost are reduced, the service life of a volute mold is prolonged, and noise is reduced without changing the size of the air outlet.
Disclosed are a volute assembly (1) and an induced draught fan using same. The volute assembly comprises a volute (10) and a cover plate (11) installed at the bottom of the volute, wherein an inner cavity (12) capable of installing a wind wheel is enclosed by the volute and the cover plate, an air inlet (111) is provided in the cover plate, an exhaust pipeline (13) extends out of a side face of the volute, an air outlet (130) is formed in the end of the exhaust pipeline, the exhaust pipeline comprises a connecting section (131), a diffusion section (132), and an installation section (133), one end of the connecting section is connected to the volute, the other end of the connecting section is connected to the installation section by means of the diffusion section, the air outlet is provided in the end of the installation section, and the inner diameter D1 of the diffusion section gradually increases from the connecting section to the installation section. The volute injection molding difficulty and injection molding cost are reduced, the service life of a volute mold is prolonged, and noise is reduced without changing the size of the air outlet.
A stator assembly includes a strip stator core, a three-phase coil winding, and an end insulator. The strip stator core includes twelve stator core units, twelve connection parts, and twelve slots; every two adjacent stator core units are connected by one of the twelve connection parts; each slot is disposed between every two adjacent stator core units, and each stator core unit includes a yoke and a tooth protruding from one end of the yoke; every two adjacent teeth are abutted against each other to form one of the twelve slots. The three-phase coil winding includes a U-phase winding, a V-phase winding, and a W-phase winding. The end insulator includes a first end insulator and a second end insulator; the first end insulator includes a first coil-in pin, a second coil-in pin, a third coil-in pin, and a coil-out pin.
H02K 3/32 - Windings characterised by the shape, form or construction of the insulation
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 19/10 - Synchronous motors for multi-phase current
89.
METHOD FOR DETERMINING STALLED STATE OF PERMANENT MAGNET SYNCHRONOUS MOTOR UNDER POSITION SENSOR-FREE VECTOR CONTROL
Disclosed is a method for determining the stalled state of a permanent magnet synchronous motor under position sensor-free vector control, which comprises the following steps: step A: calculating the input power Pin and output power Pout of a motor; step B: calculating an error value ERR＝|Pin-K1×Pout|, where K is a coefficient; step C: determining whether the ERR is greater than or equal to a certain preset value P0, and if so, then returning to step A; if not, determining that the motor is in a stalled state, and proceeding to step D; step D: a microprocessor of the motor locks out a pulse signal outputted to an inverter. The described method may accurately determine a motor changing into a stalled state, and still prevents the motor from entering a steady-state closed loop state when changed into the stalled state, which enables the motor to be in a high-frequency small-amplitude oscillation state, perfects a protection strategy, effectively protects the motor, essentially solves the problem of determining the stalled state, and does not require modifications once a load is replaced, which brings great convenience to a user.
An air cooling and humidifying device for a fuel cell and a fuel cell to which same is applied. The air cooling and humidifying device comprises a humidifying module (1) and a middle cooling module (2), wherein the middle cooling module (2) and the humidifying module (1) are connected to each other by means of a fastening member; the middle cooling module (2) is provided with a high-temperature dry air inlet (21), a low-temperature dry air outlet (22), a cooling liquid inlet (23), and a cooling liquid outlet (24); the humidifying module (1) is provided with a low-temperature dry air inlet and a low-temperature wet air outlet (12); the low-temperature dry air outlet (22) is connected to the low-temperature dry air inlet; high-temperature dry air enters from the high-temperature dry air inlet (21), is cooled by the middle cooling module (2) and is then changed into low-temperature dry air and enters the humidifying module (1) for treatment, and is then changed to a low-temperature wet air and flows out from the low-temperature wet air outlet (12); a cooling liquid enters the inner part of the middle cooling module (2) from the cooling liquid inlet (23) for heat exchange and then flows out from the cooling liquid outlet (24). The described structure integrates the functions of a cooler and a humidifier. The structure is simple and compact, takes up a small amount of the overall layout space of a fuel cell system, and is convenient to install.
H01M 8/04119 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
An induced draft fan, comprising a volute (1), a wind wheel (2) and a motor (3). The volute (1) comprises a volute housing (11) and a cover plate (12) installed at the bottom part of the volute housing (11); the volute housing (11) and the cover plate (12) enclose to form an inner cavity (13) in which the wind wheel (2) may be installed; a side surface (111) of the volute housing (11) extends out of an exhaust pipeline (15); the tail part of the exhaust pipeline (15) forms a volute exhaust port (18); the middle of the top part of the volute housing (11) is inwardly recessed for use in installing the motor (3); a volute tongue (16) is provided at a position inside of the inner cavity (13) close to the exhaust pipeline (15); the middle of the top part of the volute housing (11) is inwardly recessed so that the inner cavity (13) forms a first top surface (112) and a second top surface (113); a flow channel (17) is formed between the first top surface (112), the side surface (111) and the cover plate (12); both the first top surface (112) and the second top surface (113) are flat; and turning from the volute tongue (16) to the volute exhaust outlet (18) along the wind wheel (2), the width L of the first top surface (112) gradually increases, so that the cross-sectional area of the flow channel (17) gradually increases.
An adaptor for an induced draft fan, and an induced draft fan and a draft fan system using same; the adaptor (4) comprises a fitting section (41), a transition section (42) and an outlet section (43), the fitting section (41) and the outlet section (43) being respectively located at either end of the transition section (42); the fitting section (41) comprises an inner ring (411) and an outer ring (412), the top end of the outer ring (412) is connected to the transition section (42), and the tail ends of the inner ring (411) and the outer ring (412) are connected to a connecting plate (413); the adaptor (4) is mounted at an air outlet (16), and the inner wall surface of the inner ring (411) is tightly fitted with the outer surface of an air discharge pipe (15). The present invention simplifies the mounting structure, reduces the number of parts, and makes the mounting simple and efficient.
A volute assembly, an induced draught fan using same and a gas stove. The volute assembly comprises a volute (10) and a cover plate (11) installed at the bottom of the volute (10). An inner cavity (12) capable of installing a wind wheel is defined by the volute (10) and the cover plate (11). An air inlet (111) is formed in the cover plate (11), and an exhaust pipeline (13) extends out of the side surface of the volute (10). An air outlet (130) is formed at the end portion of the exhaust pipeline (13). The exhaust pipeline (13) comprises an inner pipe (131) and an outer pipe (132), the inner pipe (131) is connected to the side wall of the volute (10), the outer pipe (132) is provided outside the inner pipe (131), and the pipe diameter of the outer pipe (132) is larger than that of the inner pipe (131). A water storage cavity (100) is formed between the inner pipe (131) and the outer pipe (132), at least one first drain hole (141) is formed in the volute (10) close to the exhaust pipeline (13), and the water storage cavity (100) is communicated with the first drain hole (141) by means of a flow guide device. Due to the flow guide device, condensate water can flow into the first drain hole (141) rapidly from the water storage cavity (100), the first drain hole (141) is located in the volute (10), so that the first drain hole (141) is formed in the bottom of the flow guide device, facilitating water discharging.
A volute assembly, and an induced draft fan and a gas furnace using same. The volute assembly comprises a volute (10) and a cover plate (11) mounted at the bottom of the volute (10). The volute (10) and the cover plate (11) enclose to form an inner cavity (12) in which a fan wheel can be mounted. The cover plate (11) is provided with an air inlet (111). An air exhaust pipeline (13) extends out from the side surface of the volute (10). An air outlet (130) is formed at an end portion of the air exhaust pipeline (13). The air exhaust pipeline (13) comprises a connecting segment (131) and a diverging segment (132). The connecting segment (131) is connected to the side wall of the volute (10). The inner diameter of the diverging segment (132) is greater than the outer diameter of the connecting segment (131). A step plate (133) is formed between the connecting segment (131) and the diverging segment (132). An air guide pipe (2) is mounted on the step plate (133). The step plate (133), the diverging segment (132), and the air guide pipe (2) enclose to form a water storage cavity (100). The tail portion of the diverging segment (132) is provided with a water discharge pipe (134) communicated with the water storage cavity (100). The volute assembly features strong universality, a simple structure and simple manufacturing, and low manufacturing costs, can improve a product qualification rate, and can improve the performance of an induced draft fan by matching between air guide pipes of different air exhaust diameters and a volute.
Disclosed are a combined electric motor controller and a combination method therefor. The combined electric motor controller comprises a power source module, an electric motor control module and an I/O module, wherein one electric motor control module controls one electric motor body, comprises a microprocessor, an IGBT inversion component and a heat dissipation apparatus, receives the power supply of a VDC power source and an externally input control signal, and outputs a power source to the electric motor body, so as to control a rotation speed or a torque or an air volume; the I/O module is used for carrying out signal transmission between a system main control board or a peripheral device and the electric motor control module; and each functional module is provided with an independent metal or plastic shell and a circuit board located in the shell, the functional modules are connected to each other by means of mutually matched connecting pieces, and are used for transmitting the power source or the control signal between the functional modules, and the heat dissipation apparatus is mounted inside or outside of the shell. The production mode of the combined electric motor controller is flexible and convenient, the adaptability thereof is high, the research and development period thereof is shortened, production is quick and convenient, maintenance and replacement are convenient, and maintenance costs are reduced.
Disclosed are an ejector and a fuel cell hydrogen intake regulation and hydrogen return device applicable thereto. The ejector comprises a nozzle, a mixing chamber, an ejector sleeve, an inner seal ring, and a fastening screw. The nozzle and the mixing chamber are fitted to two ends of the ejector sleeve, respectively. A wall surface at a middle portion of the ejector sleeve is provided with a gap that serves as an inlet of an ejection fluid. A first flow channel is disposed at a center of the nozzle to serve as a channel for a work-producing high-pressure fluid. The nozzle has one end provided with a high-pressure fluid inlet, and another end being a high-pressure jetting opening. The mixing chamber is provided with a mixing section flow channel and an expansion section flow channel. The work-producing high-pressure fluid jetted from the high-pressure jetting opening and the ejection fluid flowing into the gap are mixed in the mixing section flow channel, pass through the expansion section flow channel, and are then ejected. The structure enables standardized and systematic designs, thereby providing high design and machining precision for part structures, superior interchangeability, and a low cost. The invention enables assembly and replacement of the nozzle and the mixing chamber without changing the ejector sleeve, thereby meeting different performance requirements.
H01M 8/04089 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
F04F 5/16 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
A brushless DC motor, including a base, an insulation seat, a rotor assembly, a revolving shaft, a stator assembly, a control panel, a Hall circuit board, and an end cover. The revolving shaft is connected to the rotor assembly. The rotor assembly includes a housing and a plurality of magnetic tiles. The housing includes an inner wall and a cavity defined by the inner wall. The plurality of magnetic tiles is disposed on the inner wall. The stator assembly is disposed in the cavity. The base includes a cylindrical sleeve extending from a center of the base to the cavity of the rotor assembly. The stator assembly is connected to the cylindrical sleeve; two ends of the cylindrical sleeve are provided with a first bearing and a second bearing, respectively; and two ends of the revolving shaft are supported by the first bearing and the second bearing, respectively.
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K 5/15 - Mounting arrangements for bearing-shields or end plates
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 21/22 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
H02K 11/30 - Structural association with control circuits or drive circuits
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
A fuel cell including an electrochemical reactor; a cooling circuit; a controller; a coolant circuit; a first temperature sensor; and a second temperature sensor. The cooling circuit includes a cooling pipe, a water pump, a radiator, a heater, and a thermostatic three-way valve. The cooling circuit is configured to cool the electrochemical reactor. The controller is configured to control operations of the electrochemical reactor and the cooling circuit. The cooling pipe includes a first water inlet and a first water outlet; and the coolant circuit is disposed between the first water inlet and the first water outlet. The first temperature sensor is disposed at the first water inlet. The second temperature sensor is disposed at the first water outlet. The first temperature sensor and the second temperature sensor are configured to detect and transmit temperature data of a coolant in the cooling pipe to the controller.
An integrated air cooling structure and an integrated BSG system. The integrated air cooling structure comprises a shell, a centrifugal wind wheel (3) and a rotating shaft (7). An accommodating cavity (10) is formed in the shell, and the centrifugal wind wheel (3) is installed in the accommodating cavity (10). The centrifugal wind wheel (3) is installed on the rotating shaft (7), and the rotating shaft (7) drives the centrifugal wind wheel (3) to rotate. The shell is provided with an air inlet (42) and an air outlet (43), the air inlet (42) and the air outlet (43) being in communication with the accommodating cavity (10). A high-power device (1) is installed on the outer circumference of the shell; heat generated by the high-power device (1) is transferred to the shell through contact and taken away, and cold air flows in from the air inlet (42) to contact with an inner surface of the shell so as to take away heat and flows out from the air outlet (43). In the same space, the cooling capacity of a heat dissipation structure to a power device is improved. According to verification by simulation calculation, the thermal resistance between the power device and the environment can be reduced by 10% to 20%.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
Disclosed are a motor controller and a motor applying same. The motor controller comprises a control box and a control board mounted within the control box. The control box is provided therein with at least two cavities, one of which is configured as a circuit board mounting cavity of which the size matches that of the control board. The control board is mounted within the circuit board mounting cavity. The motor controller is structurally simple; by employing control boards and mounting cavities of a unified size, motors of different power levels and sizes can implement the standardization and universalization of parts and components, thus not only increasing design and production efficiency, but also reducing costs and simplifying management.
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
H02K 11/33 - Drive circuits, e.g. power electronics
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
