ELECTRIC POWER CONVERTER AND AIR CONDITIONER PROVIDED WITH SAME
| Registre | Brevet WIPO |
|---|---|
| Numéro d'application | JP2018040622 |
| Numéro de publication | 2020/090071 |
| Statut | Délivré - en vigueur |
| Date de dépôt | 2018-10-31 |
| Date de publication | 2020-05-07 |
| Propriétaire | HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japon) |
| Inventeur(s) |
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Abrégé
The present invention provides an electric power converter with low loss, and the like. According to the present invention, a converter (100) is provided with a converter circuit (10) which converts an alternating current voltage into a direct current voltage, while being provided with: a reactor (L1) which is provided on a wiring line (p1) that connects an alternating current power supply (G) and the converter circuit (10) to each other; and a smoothing capacitor (C1) which smoothes direct current voltage applied from the converter circuit (10). The converter (100) is additionally provided with: reverse voltage application circuits (30a, 30b) which apply a reverse voltage to a free wheeling diode or parasitic diodes (Da, Db) of switching elements (Qa, Qb); and a control circuit (50) which makes a switch between driving and stopping of the reverse voltage application circuits (30a, 30b) in accordance with the magnitude of the load of the converter circuit (10).