STORAGE POWER DISCHARGE CIRCUIT FOR INVERTER DEVICE

PROBLEM TO BE SOLVED: To provide a storage power discharge circuit of an inverter device which can quickly discharge the stored charges in main circuit capacitors when the power supply is interrupted, while balancing the voltages of the plurality of main circuit capacitors by reducing the loss due t...

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Hauptverfasser:	KAINUMA YOSHIHIRO, GOSHI YOICHI
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To provide a storage power discharge circuit of an inverter device which can quickly discharge the stored charges in main circuit capacitors when the power supply is interrupted, while balancing the voltages of the plurality of main circuit capacitors by reducing the loss due to discharge during normal operation, when a configuration of series connection of the plurality of main circuit capacitors is employed.SOLUTION: A storage power discharge circuit includes: the plurality of main circuit capacitors connected in series between main terminals and storing power; series resistors connected in parallel with the plurality of main circuit capacitors during normal operation; a voltage stabilization circuit for stabilizing the voltage between respective terminals of the plurality of main circuit capacitors depending on the divided voltage of the series resistors during normal operation; and a control switch having a control input and destroying the voltage stable state of the plurality of main circuit capacitors by the voltage stabilization circuit, by dividing the flowing current of the series resistors when the power supply is interrupted.