Power conversion device

Power conversion device

A power conversion device 43, 140, 142 includes a power switching circuit 144 that supplies AC voltages generated between switching elements operating as upper arms 328 and switching elements operating as lower arms 330, and a control circuit 172 that generates and supplies to the driver circuit 174...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NISHIGUCHI, SHINGO, OOYAMA, KAZUTO, FURUKAWA, KIMIHISA, MITSUI, TOSHISADA
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:A power conversion device 43, 140, 142 includes a power switching circuit 144 that supplies AC voltages generated between switching elements operating as upper arms 328 and switching elements operating as lower arms 330, and a control circuit 172 that generates and supplies to the driver circuit 174 signals for controlling the switching operation of the switching elements 328, 330 by a PWM method in a first operational region in which frequency of an AC power to be outputted is low, and that generates and supplies to the driver circuit 174 signals for controlling the switching operation of the switching elements 328, 330 at timings based upon the phase of the AC power to be outputted in an operational region in which the frequency of the AC power to be outputted is higher than in the first operational region.