CTM Magnetics, Inc.

United States of America

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        Trademark 4
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2022 1
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2020 7
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IPC Class
H01F 27/08 - Cooling; Ventilating 21
H01F 27/255 - Magnetic cores made from particles 21
H01F 27/28 - Coils; Windings; Conductive connections 21
H02M 1/12 - Arrangements for reducing harmonics from ac input or output 20
H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support 19
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Status
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Registered / In Force 37
Found results for

1.

FLAT WINDING / EQUAL COUPLING COMMON MODE INDUCTOR APPARATUS AND METHOD OF USE THEREOF

      
Application Number 17588314
Status Pending
Filing Date 2022-01-30
First Publication Date 2022-06-16
Owner CTM Magnetics ,Inc (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.
  • Jones, Corey

Abstract

The invention comprises an inductor, such as used in processing transmission of a 3-phase power system. The inductor comprises a flat/rectangular winding with a narrow edge of the flat winding wound around a core, where the width of the winding exceeds three times the height of the inductor facing edge of the winding. The inductor optionally comprises a distributed gap particle core and/or is wound in parallel with multiple windings. Optionally, the inductor is used as part of an equal coupling common mode electrical system for processing the 3-phase transmission and/or a high frequency inverter comprising a switching device, such as a silicon carbide metal-oxide-semiconductor field-effect transistor.

IPC Classes  ?

  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 3/14 - Constrictions; Gaps, e.g. air-gaps
  • H01F 27/38 - Auxiliary core members; Auxiliary coils or windings
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
  • H02M 7/00 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output

2.

FABRICATED INDUCTOR WINDING APPARATUS AND METHOD OF USE THEREOF

      
Application Number 17235293
Status Pending
Filing Date 2021-04-20
First Publication Date 2021-08-19
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Maclennan, Grant A.
  • Jones, Corey
  • Wennerstrom, Hans

Abstract

The invention comprises a fabricated inductor winding apparatus and method of use/manufacture thereof, where the inductor has a core and a fabricated winding. The fabricated winding comprises a plurality of turns, a first turn of the plurality of turns comprising a first sub-section and a second sub-section, the first sub-section electrically connected to the second sub-section with a first non-wire electrical connection during an assembly step of the inductor and the second sub-section of the first turn electrically connected to a second turn with a second electrical connection formed during a winding step.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

3.

MULTI-INDUCTOR MOUNTING / COOLING APPARATUS AND METHOD OF USE THEREOF

      
Application Number 17235670
Status Pending
Filing Date 2021-04-20
First Publication Date 2021-08-19
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Schiffer, Steve
  • Cotner, Matt
  • Maclennan, Grant A.
  • Wennerstrom, Hans

Abstract

The invention comprises a multi-inductor mounting/cooling apparatus and method of use thereof comprising: an elongated tube having a first elongated section and a second elongated section separated by at least a first longitudinal split down a length of the elongated tube and at least three inductors affixed to a baseplate, the at least three inductors positioned within the elongated tube, the at least three inductors comprising a plurality of connectors extending radially outward through at least one aperture formed between the first elongated section and the second elongated section. Optionally and preferably a fan is positioned within and/or at an end of the elongated tube.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

4.

DELTA CIRCUIT EMBEDDED CONTACTORS OF A HARMONIC FILTER APPARATUS AND METHOD OF USE THEREOF

      
Application Number 17235375
Status Pending
Filing Date 2021-04-20
First Publication Date 2021-08-05
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Wennerstrom, Hans
  • Jones, Corey
  • Maclennan, Grant A.

Abstract

The invention comprises a harmonic filter apparatus and method of use thereof, the harmonic filter including a delta circuit comprising: (1) a first leg connecting a first apex to a second apex of the delta circuit; a second leg connecting the second apex to a third apex of the delta circuit; and a third leg connecting the third apex to the first apex and (2) a first electrical contactor and a second electrical contactor positioned within at least two of: the first leg, the second leg; The invention comprises a harmonic filter apparatus and method of use thereof, the harmonic filter including a delta circuit comprising: (1) a first leg connecting a first apex to a second apex of the delta circuit; a second leg connecting the second apex to a third apex of the delta circuit; and a third leg connecting the third apex to the first apex and (2) a first electrical contactor and a second electrical contactor positioned within at least two of: the first leg, the second leg; and the third leg. Optionally and preferably, each apex of the delta circuit is connected to individual phases of three phase power via respective inductor—coupled inductor pairs, where the harmonic filter magnetically isolates individual phases of the three phase power.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

5.

Magnetic phase isolating harmonic filter for multi-phase power apparatus and method of use thereof

      
Application Number 17235733
Grant Number 11817254
Status In Force
Filing Date 2021-04-20
First Publication Date 2021-08-05
Grant Date 2023-11-14
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.

Abstract

The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.

IPC Classes  ?

  • H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 7/00 - Magnets
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H03H 7/01 - Frequency selective two-port networks

6.

MAGNETIC PHASE ISOLATING HARMONIC FILTER FOR MULTI-PHASE POWER APPARATUS AND METHOD OF USE THEREOF

      
Application Number 17235770
Status Pending
Filing Date 2021-04-20
First Publication Date 2021-08-05
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.

Abstract

The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

7.

INDUCTOR MOUNTING APPARATUS AND METHOD OF USE THEREOF

      
Application Number 17235799
Status Pending
Filing Date 2021-04-20
First Publication Date 2021-08-05
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Jones, Corey
  • Schiffer, Steve
  • Maclennan, Grant A.
  • Wennerstrom, Hans

Abstract

The invention comprises a method for fastening an inductor, comprising an aperture therethrough, to a mounting surface with a set of at least two mechanical straps and a strap force of ten to one hundred pounds of force per strap, the step of fastening further comprising the step of: passing at least a first portion of each of a first and second mechanical strap of the set of mechanical straps through the aperture and on opposing sides of the aperture, the first portion comprising a non-conductive material, where the inductor winding is fabricated during installation and/or the inductor is a component of a harmonic filter magnetically isolating and filtering individual phases of three phase power.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

8.

High frequency inverter/distributed gap inductor—capacitor filter apparatus and method of use thereof

      
Application Number 16708674
Grant Number 11361895
Status In Force
Filing Date 2019-12-10
First Publication Date 2020-10-29
Grant Date 2022-06-14
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.
  • Handy, Edward

Abstract

The invention comprises an inverter/converter yielding high frequency harmonics and/or non-sixty Hertz output coupled to a high frequency inductor-capacitor filter apparatus. For example, an inverter/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency modulated by a fundamental frequency and a set of harmonic frequencies, where the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. An inductor-capacitor filter, comprising an inductor having a distributed gap core material, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies.

IPC Classes  ?

  • H01F 27/255 - Magnetic cores made from particles
  • 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
  • H01F 27/08 - Cooling; Ventilating

9.

Method of forming a cast inductor apparatus

      
Application Number 16727825
Grant Number 11501911
Status In Force
Filing Date 2019-12-26
First Publication Date 2020-08-13
Grant Date 2022-11-15
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Maclennan, Grant A.
  • Wennerstrom, Hans
  • Schiffer, Steve

Abstract

The invention comprises a method for manufacturing an inductor, comprising the steps of: casting a cast winding comprising an inner cavity; inserting a first inductor core subsection into the inner cavity; inserting a second inductor core subsection into the inner cavity; and mechanically coupling the first inductor core subsection to the second inductor core subsection to form an inductor core wound by the cast windings. The method of manufacturing optionally includes the steps of: forming at least a portion of the cast winding into an arced helical shape; forming the first inductor core subsection and the second inductor core subsection into elements of a torpid shaped inductor core; deforming the cast winding to physically allow the step of inserting the first inductor core subsection into the inner cavity; and/or deforming at least a portion of the cast winding into an arced helical coil shape after the step of inserting.

IPC Classes  ?

  • H02M 7/00 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations

10.

GRIDHAWK

      
Serial Number 90014207
Status Registered
Filing Date 2020-06-22
Registration Date 2021-01-19
Owner CTM Magnetics, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Electronic components in the nature of capacitors and inductors, namely, passive harmonic filters

11.

FLEXSINE

      
Serial Number 90014252
Status Registered
Filing Date 2020-06-22
Registration Date 2021-01-19
Owner CTM Magnetics, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Electronic magnetostrictive equipment, namely, a sine wave filter

12.

COOLED / CAST INDUCTOR APPARATUS AND METHOD OF USE THEREOF

      
Application Number 16727838
Status Pending
Filing Date 2019-12-26
First Publication Date 2020-06-11
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Maclennan, Grant A.
  • Wennerstrom, Hans
  • Schiffer, Steve

Abstract

The invention comprises an apparatus, comprising: a toroid shaped inductor and a cooling jacket including at least two sections joined to encase the toroid shaped inductor, where the cooling jacket has an inner toroid shaped surface separated by a coolant flow gap from the toroid shaped inductor. Optionally, the inductor comprises a cast winding, a cast heat sink element of the cast winding protruding from a longitudinal length of a turn of the winding, and/or a distributed gap pressed powder inductor core.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/10 - Liquid cooling
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/08 - Cooling; Ventilating
  • H01F 27/255 - Magnetic cores made from particles

13.

CAST INDUCTOR APPARATUS AND METHOD OF USE THEREOF

      
Application Number 16727861
Status Pending
Filing Date 2019-12-26
First Publication Date 2020-06-11
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Maclennan, Grant A.
  • Wennerstrom, Hans
  • Schiffer, Steve

Abstract

The invention comprises an apparatus, comprising: an inductor comprising a cast winding and/or a cast heat sink element of the cast winding protruding from a longitudinal length of a turn of the winding wrapped around an inductor core, such as a distributed gap/pressed powder inductor core. Optionally, the inductor comprises a toroid shape, is cooled using a cooling jacket with a toroid shaped void therein, and/or is wrapped with an arced helical shaped cast winding, which is optionally deformable for insertion of the inductor core in sections.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/10 - Liquid cooling
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/08 - Cooling; Ventilating
  • H01F 27/255 - Magnetic cores made from particles

14.

Flat winding / equal coupling common mode inductor apparatus and method of use thereof

      
Application Number 16540025
Grant Number 11139103
Status In Force
Filing Date 2019-08-13
First Publication Date 2020-01-23
Grant Date 2021-10-05
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.
  • Jones, Corey

Abstract

The invention comprises an inductor, such as used in processing transmission of a 3-phase power system. The inductor comprises a flat/rectangular winding with a narrow edge of the flat winding wound around a core, where the width of the winding exceeds three times the height of the inductor facing edge of the winding. The inductor optionally comprises a distributed gap particle core and/or is wound in parallel with multiple windings. Optionally, the inductor is used as part of an equal coupling common mode electrical system for processing the 3-phase transmission and/or a high frequency inverter comprising a switching device, such as a silicon carbide metal-oxide-semiconductor field-effect transistor.

IPC Classes  ?

  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/32 - Insulating of coils, windings, or parts thereof
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors

15.

Method for potting an electrical component

      
Application Number 15939167
Grant Number 10541081
Status In Force
Filing Date 2018-03-28
First Publication Date 2019-01-24
Grant Date 2020-01-21
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Handy, Edward
  • Maclennan, Grant A.
  • Wennerstrom, Hans

Abstract

A high frequency inductor filter cooling apparatus, method of manufacture, and method of use thereof is described. In one embodiment, an inductor is potted in an epoxy-silica mixture to facilitate thermal transfer from the inductor. The inductor is optionally used with a capacitor to filter/invert/convert power. The inductor optionally comprises a distributed gap core and/or a powdered core material. In one example, a minimum carrier frequency used with the filter is above that usable by a traditional wound iron-steel inductor, such as greater than seven hundred or ten thousand Hertz at fifty or more amperes. Optionally, the inductor is used in an inverter/converter apparatus in conjunction with a notched low-pass filter, a low pass filter combined with a notch filter and a high frequency roll off filter, and/or one or more of a silicon carbide, gallium arsenide, and/or gallium nitride based transistor.

IPC Classes  ?

  • H01F 7/06 - Electromagnets; Actuators including electromagnets
  • H01F 41/00 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
  • H01F 41/06 - Coil winding
  • H05K 3/30 - Assembling printed circuits with electric components, e.g. with resistor
  • H01F 27/08 - Cooling; Ventilating
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

16.

Equal coupling common mode inductor apparatus and method of use thereof

      
Application Number 15635130
Grant Number 10211800
Status In Force
Filing Date 2017-06-27
First Publication Date 2018-03-29
Grant Date 2019-02-19
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.
  • Jones, Corey

Abstract

The invention comprises an electrical system apparatus for processing three-phase power, comprising: a first, second, and third inductor connected on a first end to a first common magnetic field carrying plate and connected on a second end to a second common magnetic field carrying plate, where the three inductors are equidistant from each other and/or equidistance from a central axis, which yields an equal coupling common mode inductor-capacitor based filtering apparatus. Generally, inductor placement symmetry and/or equal magnetic field permeabilities between each pair of the three inductors balances magnetic fields within each inductor at each point of time, where each of the three inductors is connected to a single phase of three-phase power, the three phases offset from each other by one-third of a period.

IPC Classes  ?

  • H01F 27/08 - Cooling; Ventilating
  • H03H 7/09 - Filters comprising mutual inductance
  • H03H 7/01 - Frequency selective two-port networks
  • H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
  • H01F 27/10 - Liquid cooling
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H02K 11/02 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

17.

Flat winding / equal coupling common mode inductor apparatus and method of use thereof

      
Application Number 15635113
Grant Number 10535462
Status In Force
Filing Date 2017-06-27
First Publication Date 2018-03-08
Grant Date 2020-01-14
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.
  • Jones, Corey

Abstract

The invention comprises an inductor, such as used in processing transmission of a 3-phase power system. The inductor comprises a flat/rectangular winding with a narrow edge of the flat winding wound around a core, where the width of the winding exceeds three times the height of the inductor facing edge of the winding. The inductor optionally comprises a distributed gap particle core and/or is wound in parallel with multiple windings. Optionally, the inductor is used as part of an equal coupling common mode electrical system for processing the 3-phase transmission and/or a high frequency inverter comprising a switching device, such as a silicon carbide metal-oxide-semiconductor field-effect transistor.

IPC Classes  ?

18.

Distributed gap inductor filter apparatus and method of use thereof

      
Application Number 15348381
Grant Number 10110114
Status In Force
Filing Date 2016-11-10
First Publication Date 2017-05-04
Grant Date 2018-10-23
Owner CTM Magnetics, Inc. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a high frequency inductor filter apparatus and method of use thereof. In one embodiment, an inductor is used to filter/convert power, where the inductor comprises a distributed gap core and/or a powdered core material. The inductor core is wound with one or more turns, where multiple turns are optionally electrically wired in parallel. In one example, the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. The core is optionally an annular core, solid rod core, or a core used for multiple phases, such as a ‘C’ or ‘E’ core. Optionally, the inductor is used in an inductor/converter apparatus, where output power has a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies, in conjunction with one or more of a silicon carbide, gallium arsenide, and/or gallium nitride based transistor.

IPC Classes  ?

  • H03H 7/01 - Frequency selective two-port networks
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H03H 7/075 - Ladder networks, e.g. electric wave filters
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/255 - Magnetic cores made from particles
  • 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

19.

Distributed gap inductor potting apparatus and method of use thereof

      
Application Number 14988560
Grant Number 09553499
Status In Force
Filing Date 2016-01-05
First Publication Date 2016-09-29
Grant Date 2017-01-24
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Handy, Edward
  • Maclennan, Grant A.
  • Wennerstrom, Hans

Abstract

A high frequency inductor filter cooling apparatus and method of use thereof is described. In one embodiment, an inductor is potted in an epoxy-silica mixture to facilitate thermal transfer from the inductor. The inductor is optionally used to filter/invert/convert power. The inductor comprises a distributed gap core and/or a powdered core material. In one example, the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. Optionally, the inductor is used in an inverter/converter apparatus, where output power has a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies, in conjunction with a notched low-pass filter, a low pass filter combined with a notch filter and a high frequency roll off filter, and/or one or more of a silicon carbide, gallium arsenide, and/or gallium nitride based transistor.

IPC Classes  ?

  • H01F 27/02 - Casings
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/22 - Cooling by heat conduction through solid or powdered fillings
  • H01F 27/255 - Magnetic cores made from particles
  • H02M 7/539 - 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 with automatic control of output wave form or frequency
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
  • H01F 27/12 - Oil cooling
  • H01F 27/18 - Liquid cooling by evaporating liquids
  • H01F 27/32 - Insulating of coils, windings, or parts thereof

20.

High frequency inverter/distributed gap inductor—capacitor filter apparatus and method of use thereof

      
Application Number 14987675
Grant Number 10594206
Status In Force
Filing Date 2016-01-04
First Publication Date 2016-07-14
Grant Date 2020-03-17
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Wennerstrom, Hans
  • Maclennan, Grant A.
  • Handy, Edward

Abstract

The invention comprises an inverter/converter yielding high frequency harmonics and/or non-sixty Hertz output coupled to a high frequency inductor-capacitor filter apparatus. For example, an inverter/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency modulated by a fundamental frequency and a set of harmonic frequencies, where the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. An inductor-capacitor filter, comprising an inductor having a distributed gap core material, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies.

IPC Classes  ?

  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H02P 6/14 - Electronic commutators
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/08 - Cooling; Ventilating
  • H01F 37/00 - Fixed inductances not covered by group
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors

21.

Method for potting an electrical component

      
Application Number 14988605
Grant Number 10312018
Status In Force
Filing Date 2016-01-05
First Publication Date 2016-07-14
Grant Date 2019-06-04
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Handy, Edward
  • Maclennan, Grant A.
  • Wennerstrom, Hans

Abstract

A high frequency inductor filter cooling apparatus, method of manufacture, and method of use thereof is described. In one embodiment, an inductor is potted in an epoxy-silica mixture to facilitate thermal transfer from the inductor. The inductor is optionally used with a capacitor to filter/invert/convert power. The inductor optionally comprises a distributed gap core and/or a powdered core material. In one example, a minimum carrier frequency used with the filter is above that usable by a traditional wound iron-steel inductor, such as greater than seven hundred or ten thousand Hertz at fifty or more amperes. Optionally, the inductor is used in an inverter/converter apparatus in conjunction with a notched low-pass filter, a low pass filter combined with a notch filter and a high frequency roll off filter, and/or one or more of a silicon carbide, gallium arsenide, and/or gallium nitride based transistor.

IPC Classes  ?

  • H01F 7/06 - Electromagnets; Actuators including electromagnets
  • H01F 41/00 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
  • H01F 41/06 - Coil winding
  • H05K 3/30 - Assembling printed circuits with electric components, e.g. with resistor
  • H01F 27/08 - Cooling; Ventilating
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 37/00 - Fixed inductances not covered by group
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

22.

Distributed gap inductor filter apparatus and method of use thereof

      
Application Number 14260014
Grant Number 09590486
Status In Force
Filing Date 2014-04-23
First Publication Date 2015-10-29
Grant Date 2017-03-07
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a high frequency inductor filter apparatus and method of use thereof. In one embodiment, an inductor is used to filter/convert power, where the inductor comprises a distributed gap core and/or a powdered core material. The inductor core is wound with one or more turns, where multiple turns are optionally electrically wired in parallel. In one example, the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. The core is optionally an annular core, solid rod core, or a core used for multiple phases, such as a ‘C’ or ‘E’ core. Optionally, the inductor is used in an inductor/converter apparatus, where output power has a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies, in conjunction with one or more of a silicon carbide, gallium arsenide, and/or gallium nitride based transistor.

IPC Classes  ?

  • H03H 7/01 - Frequency selective two-port networks
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
  • H03H 7/075 - Ladder networks, e.g. electric wave filters
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 37/00 - Fixed inductances not covered by group
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
  • H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
  • H01F 27/08 - Cooling; Ventilating
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations

23.

Distributed gap inductor filter apparatus and method of use thereof

      
Application Number 13954887
Grant Number 09257895
Status In Force
Filing Date 2013-07-30
First Publication Date 2015-02-05
Grant Date 2016-02-09
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a high frequency inductor filter apparatus coupled with an inverter yielding high frequency harmonics and/or non-sixty Hertz output. For example, an inductor/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies. A filter, comprising an inductor having a distributed gap core material and optional magnet wires, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies.

IPC Classes  ?

  • H02P 1/00 - Arrangements for starting electric motors or dynamo-electric converters
  • H02P 3/00 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
  • H02P 7/06 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations

24.

High frequency inductor filter apparatus and method of use thereof

      
Application Number 13953617
Grant Number 09300197
Status In Force
Filing Date 2013-07-29
First Publication Date 2015-01-29
Grant Date 2016-03-29
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

A high frequency inductor filter apparatus coupled with an inverter yielding high frequency harmonics and/or non-sixty Hertz output is described. For example, an inductor/converter apparatus is provided using a silicon carbide transistor that outputs power having a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies. A filter, comprising an inductor having a distributed gap core material and optional magnet wires, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies.

IPC Classes  ?

  • H02M 1/12 - Arrangements for reducing harmonics from ac input or output
  • H01F 3/14 - Constrictions; Gaps, e.g. air-gaps
  • H01F 27/08 - Cooling; Ventilating
  • H01F 27/255 - Magnetic cores made from particles
  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support
  • H01F 27/28 - Coils; Windings; Conductive connections
  • H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support

25.

Inductor apparatus and method of manufacture thereof

      
Application Number 13737781
Grant Number 08947187
Status In Force
Filing Date 2013-01-09
First Publication Date 2014-07-10
Grant Date 2015-02-03
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises an electrical apparatus and method of manufacture. The apparatus includes a substantially annular inductor comprising an inductor core composed of at least a distributed gap material. The distributed gap material includes particles of alternating layers of magnetic and non-magnetic materials separated by a gap material. The particles comprise an average layer thickness of less than about one hundred micrometers, where a majority of said layered particles comprise an average cross sectional size of less than about one millimeter. The inductor is cooled using at least one of: a thermally conductive potting material, a liquid coolant in direct contact with the inductor, a cooling line through the potting material or liquid coolant, and a chill coil in a container about the potting material and/or the liquid coolant.

IPC Classes  ?

26.

High voltage inductor filter apparatus and method of use thereof

      
Application Number 13953648
Grant Number 08830021
Status In Force
Filing Date 2013-07-29
First Publication Date 2013-11-21
Grant Date 2014-09-09
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a high frequency inductor filter apparatus coupled with an inverter yielding high frequency harmonics and/or non-sixty Hertz output. For example, an inductor/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies. A filter, comprising an inductor having a distributed gap core material and optional magnet wires, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies.

IPC Classes  ?

  • H01F 17/06 - Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid

27.

Power converter method and apparatus

      
Application Number 13107828
Grant Number 08373530
Status In Force
Filing Date 2011-05-13
First Publication Date 2012-11-15
Grant Date 2013-02-12
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a power converter method and apparatus, which is optionally part of a filtering method and apparatus. A corona potential is the potential for long term breakdown of winding wire insulation due to the high electric potentials between winding turns winding a mid-level power inductor in a converter system. The high electric potential creates ozone, which breaks down insulation coating the winding wire and results in degraded performance or failure of the inductor. In one embodiment, the inductor is configured with inductor winding spacers, such as a main inductor spacer and/or inductor segmenting winding spacers. The spacers are used to space winding turns of a winding coil about an inductor. The insulation of the inductor spacer minimizes energy transfer between windings and thus minimizes corona potential, formation of corrosive ozone through ionization of oxygen, correlated breakdown of insulation on the winding wire, and electrical shorts in the inductor.

IPC Classes  ?

28.

Phase change inductor cooling apparatus and method of use thereof

      
Application Number 13470281
Grant Number 08902034
Status In Force
Filing Date 2012-05-12
First Publication Date 2012-09-06
Grant Date 2014-12-02
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a phase change inductor cooling system. The cooling system uses a non-conductive refrigerant in proximate and/or in direct contact with an inductor. Heat from the inductor changes the refrigerant from a liquid to a gas phase, which removes heat from the inductor. The gas phase refrigerant is subsequently removed from the inductor to remove heat from the environment about the inductor. The refrigerant is optionally recirculated using the steps of condensing and/or compressing the refrigerant prior to reintroduction into the environment proximate and/or in direct contact with the inductor.

IPC Classes  ?

  • H01F 27/06 - Mounting, supporting, or suspending transformers, reactors, or choke coils

29.

Medium / high voltage inductor apparatus and method of use thereof

      
Application Number 13363207
Grant Number 08416052
Status In Force
Filing Date 2012-01-31
First Publication Date 2012-06-07
Grant Date 2013-04-09
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises an inductor configured for filtering medium and/or high voltage power. The inductor includes an inductor core formed of a plurality of coated magnetic particles, each of a majority of the coated magnetic particles including: a magnetic particle core and a non-magnetic coating about a corresponding magnetic particle core. The inductor optionally includes: (1) a main inductor spacer separating a first turn of a winding from a terminal turn of the winding and (2) a segmenting spacer separating two consecutive turns of the winding about said core. The inductor is configured to convert power into an output current, such as power of at least one thousand five hundred volts with an input current of at least fifty amperes.

IPC Classes  ?

30.

Inductor mounting apparatus and method of use thereof

      
Application Number 13310401
Grant Number 08624702
Status In Force
Filing Date 2011-12-02
First Publication Date 2012-03-29
Grant Date 2014-01-07
Owner CTM MAGNETICS, INC. (USA)
Inventor
  • Maclennan, Grant A.
  • Richie, Jr., Benjamin L.

Abstract

The invention comprises an inductor mounting method and apparatus. An about annular inductor is mounted using a non-conducting mount element passing at least into a center opening of the inductor. Mounting hardware forces an edge surface of the mount into proximate contact with an edge of the inductor, where the mount and mounting hardware minimally contact the inductor. The mount optionally includes holes and/or grooves to further reduce mount/inductor contact, which aids liquid, convective, and/or radiative cooling of the inductor. The inductor is optionally composed of particles of magnetic material coated with carbon and embedded into an epoxy to yield a distributed gap material.

IPC Classes  ?

  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

31.

Distributed gap inductor apparatus and method of use thereof

      
Application Number 13151007
Grant Number 08130069
Status In Force
Filing Date 2011-06-01
First Publication Date 2012-03-06
Grant Date 2012-03-06
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises an electrical system including at least an inductor configured to carry a magnetic field of less than about thirty Gauss/Oersted. The inductor comprises an inductor core having a plurality of coated particles, each of a majority of the coated particles comprising: at least three layers, a first set of substantially magnetic alternating layers composed of an alloy, and a second set of substantially non-magnetic alternating layers, where the coated particles are about evenly distributed in the inductor core. Optionally, a thermal transfer agent is used to cool the inductor, where the thermal transfer agent includes at least one of: a thermally conductive potting material and a substantially non-conductive liquid coolant in direct contact with the inductor. Optionally, a cooling coil passes through the potting material and/or the liquid coolant.

IPC Classes  ?

32.

Methods and apparatus for electrical components

      
Application Number 12497272
Grant Number 08125777
Status In Force
Filing Date 2009-07-02
First Publication Date 2012-02-28
Grant Date 2012-02-28
Owner CTM Magnetics, Inc. (USA)
Inventor
  • Maclennan, Grant
  • Richie, Benjamin

Abstract

Methods and apparatus for electrical components according to various aspects of the present invention may be implemented in conjunction with an electrical system comprising a heat generating component and a cooling system. The cooling system may comprise a cooling channel and a coolant. The coolant is disposed within the cooling channel and in thermal contact with the heat generating component.

IPC Classes  ?

  • H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

33.

Inductor apparatus and method of manufacture thereof

      
Application Number 13151139
Grant Number 08624696
Status In Force
Filing Date 2011-06-01
First Publication Date 2011-09-29
Grant Date 2014-01-07
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises an electrical apparatus and method of manufacture. The apparatus includes a substantially annular inductor comprising an inductor core composed of at least a distributed gap material. The distributed gap material includes particles of alternating layers of magnetic and non-magnetic materials separated by a gap material. The particles comprise an average layer thickness of less than about one hundred micrometers, where a majority of said layered particles comprise an average cross sectional size of less than about one millimeter. The inductor is cooled using at least one of: a thermally conductive potting material, a liquid coolant in direct contact with the inductor, a cooling line through the potting material or liquid coolant, and a chill coil in a container about the potting material and/or the liquid coolant.

IPC Classes  ?

34.

Inductor mount method and apparatus

      
Application Number 13118211
Grant Number 08089333
Status In Force
Filing Date 2011-05-27
First Publication Date 2011-09-22
Grant Date 2012-01-03
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises an inductor mounting method and apparatus. An about annular inductor is mounted using a non-conducting clamp element passing at least into a center opening of the inductor. Mounting hardware forces the clamp element toward a mounting surface to edge mount the inductor, where the mounting hardware, non-conducting clamp element, and mounting surface minimally contact the inductor. The minimal contact allows greater surface area for liquid, convective, and/or radiative cooling of the inductor. The inductor is optionally composed of particles of magnetic material coated with carbon and embedded into an epoxy to yield a distributed gap material.

IPC Classes  ?

  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

35.

Liquid cooled inductor apparatus and method of use thereof

      
Application Number 13150905
Grant Number 08519813
Status In Force
Filing Date 2011-06-01
First Publication Date 2011-09-22
Grant Date 2013-08-27
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a liquid cooled inductor system including at least an inductor and an immersion fluid directly contacting at least a portion of the inductor, such as an inductor core and/or an inductor winding. The immersion fluid is a substantially non-electrically conducting fluid. Preferably, the inductor comprises an inductor core, such as an annularly shaped core, having a plurality of sub-millimeter sized coated particles having alternating magnetic and non-magnetic layers. Optionally, a cooling coil passes through the immersion fluid, the cooling coil carrying a liquid coolant used to remove heat from the inductor.

IPC Classes  ?

36.

Potted inductor apparatus and method of use thereof

      
Application Number 13151179
Grant Number 08203411
Status In Force
Filing Date 2011-06-01
First Publication Date 2011-09-22
Grant Date 2012-06-19
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises a potted inductor, where a solid potting material substantially contacting the inductor enhances cooling of the inductor. The inductor comprises an annular core composed of a distributed gap material, where the distributed gap material includes sub-millimeter particles of alternating magnetic and non-magnetic layers separated by gaps. The potting material includes a urethane, resin, epoxy, or the like combined with a lower thermal impedance additive, such as a silica sand or an aluminum oxide. Optionally, one or more cooling lines direct a circulating coolant flow through the potting material, around the inductor, and/or through the inductor.

IPC Classes  ?

37.

Medium / high voltage inductor apparatus and method of use thereof

      
Application Number 13150940
Grant Number 08902035
Status In Force
Filing Date 2011-06-01
First Publication Date 2011-09-22
Grant Date 2014-12-02
Owner CTM MAGNETICS, INC. (USA)
Inventor Maclennan, Grant A.

Abstract

The invention comprises an inductor configured for filtering medium and/or high voltage power. The inductor includes an inductor core formed of a plurality of coated magnetic particles, each of a majority of the coated magnetic particles including: a magnetic particle core and a non-magnetic coating about a corresponding magnetic particle core. The inductor optionally includes: (1) a main inductor spacer separating a first turn of a winding from a terminal turn of the winding and (2) a segmenting spacer separating two consecutive turns of the winding about said core. The inductor is configured to convert power into an output current, such as power of at least one thousand five hundred volts with an input current of at least fifty amperes.

IPC Classes  ?

  • H01F 29/00 - Variable transformers or inductances not covered by group

38.

Methods and apparatus for electrical components

      
Application Number 12098880
Grant Number 07973628
Status In Force
Filing Date 2008-04-07
First Publication Date 2011-07-05
Grant Date 2011-07-05
Owner CTM Magnetics, Inc. (USA)
Inventor Maclennan, Grant

Abstract

Methods and apparatus according to various aspects of the present invention may operate in conjunction with an inductor. For example, n inverter/converter system according to various aspects of the present invention may include an inductor comprising a substantially annular core and a winding. The inductor may be configured for high current applications and exhibit a permeability of less than thirteen delta Gauss per delta Oersted at a load of four hundred Oersteds.

IPC Classes  ?

39.

Methods and apparatus for electromagnetic components

      
Application Number 12968185
Grant Number 08169290
Status In Force
Filing Date 2010-12-14
First Publication Date 2011-04-07
Grant Date 2012-05-01
Owner CTM Magnetics, Inc. (USA)
Inventor Maclennan, Grant

Abstract

Methods and apparatus for electromagnetic components comprise a core and a winding. The core and winding are configured to provide smaller and more effective electromagnetic components.

IPC Classes  ?

40.

CTM MAGNETICS

      
Serial Number 77899054
Status Registered
Filing Date 2009-12-22
Registration Date 2011-06-21
Owner CTM Magnetics, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Distribution transformers; Electric transformers; Electric voltage transformers; Electrical inductors; Electrical relays and transformers; Electrical transformers; Electrical transformers; Low pass inductor filter used in high power electrical applications; Power transformers for amplification; Step down transformers; Step up transformers; Transformers; Welding transformers

41.

Methods and apparatus for electromagnetic component

      
Application Number 12434894
Grant Number 07973632
Status In Force
Filing Date 2009-05-04
First Publication Date 2009-10-29
Grant Date 2011-07-05
Owner CTM Magnetics, Inc (USA)
Inventor
  • Maclennan, Grant
  • Richie, Benjamin

Abstract

The invention comprises a power filtering method and apparatus.

IPC Classes  ?

42.

Methods and apparatus for electromagnetic components

      
Application Number 12206584
Grant Number 07855629
Status In Force
Filing Date 2008-09-08
First Publication Date 2009-02-26
Grant Date 2010-12-21
Owner CTM Magetics, Inc. (USA)
Inventor Maclennan, Grant

Abstract

Methods and apparatus for electromagnetic components comprise a core and a winding. The core and winding are configured to provide smaller and more effective electromagnetic components.

IPC Classes  ?

43.

Inductor mounting, temperature control, and filtering method and apparatus

      
Application Number 12197034
Grant Number 08009008
Status In Force
Filing Date 2008-08-22
First Publication Date 2009-02-19
Grant Date 2011-08-30
Owner CTM Magnetics, Inc. (USA)
Inventor Maclennan, Grant

Abstract

Methods and apparatus according to various aspects of the present invention may be implemented in conjunction with a inductor mount mounting to a mounting surface. The inductor mount may comprise an inductor having a center opening, and a surface area encompassing all of a front face, a back face, an inner surface about the center opening, and an outer edge concentric about the center opening. The inductor mount may further include mounting hardware holding the outer edge of then inductor to the mounting surface. A cooling element moves air into contact with the front face, through the center opening, and around the outer edge of the inductor. In various embodiments, the mounting hardware contacts less that ten percent of the surface area of the inductor.

IPC Classes  ?

  • H01F 27/26 - Fastening parts of the core together; Fastening or mounting the core on casing or support

44.

Methods and apparatus for electromagnetic components

      
Application Number 11156080
Grant Number 07471181
Status In Force
Filing Date 2005-06-17
First Publication Date 2008-12-30
Grant Date 2008-12-30
Owner CTM Magnetics, Inc. (USA)
Inventor Maclennan, Grant

Abstract

Methods and apparatus for electromagnetic components comprise a core and a winding. The core and winding are configured to provide smaller and more effective electromagnetic components.

IPC Classes  ?

45.

THISS TECHNOLOGY

      
Serial Number 76594173
Status Registered
Filing Date 2004-05-25
Registration Date 2005-12-13
Owner CTM Magnetics, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Low pass inductor filter used in high power electrical applications