Power inverter system and method of starting same at high DC voltage

A power inverter system (10) includes a plurality of power semiconductor switching devices (38). Each switching device (38) includes a corresponding gate turn off resistance (40) configured to increase during starting up periods of the inverter system (10) such that the open circuit voltage of a cor...

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Bibliographische Detailangaben
Hauptverfasser:	Galbraith, Anthony William, El-Barbari, Said Farouk Said
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 inverter system (10) includes a plurality of power semiconductor switching devices (38). Each switching device (38) includes a corresponding gate turn off resistance (40) configured to increase during starting up periods of the inverter system (10) such that the open circuit voltage of a corresponding power source (12) providing power to the power inverter system (10) does not exceed the switching device (38) blocking voltage ratings during the corresponding switching turn-off periods. The starting up period is the time required to bring the corresponding power source (12) voltage from its open circuit voltage level to a predetermined voltage which constitutes a safe operating condition for the plurality of power semiconductor switching devices (38).