A vehicle auxiliary power supply device includes a resonant inverter circuit 1 that converts DC input into a desired AC voltage and outputs the AC voltage and a control unit 10. The control unit 10 includes a resonance-time managing unit 13 managing resonance time of current flowing in the resonant inverter circuit 1, a gate-off-command generating unit 12 detecting overcurrent flowing in the resonant inverter circuit 1 based on detected current of a current detector CT1, and, when the overcurrent is detected, generating, based on detected current of the current detector CT1 and resonance time managed by the resonance-time managing unit 13, a gate-off command to turn off switching elements HGU1 and HGV2 included in the resonant inverter circuit 1 after the elapse of time after which current flowing in the switching elements HGU1 and HGV2 becomes zero for the first time, and a gate-signal generating unit 14 generating a gate signal that controls the switching elements HGU1 and HGV2 to be turned off when the gate-off command is input.
AUXILIARY POWER SOURCE DEVICE FOR VEHICLE AND OVERCURRENT PROTECTION METHOD
HILFSSTROMQUELLE FÜR FAHRZEUG UND ÜBERSTROMSCHUTZVERFAHREN
DISPOSITIF SOURCE D'ALIMENTATION AUXILIAIRE POUR VÉHICULE ET PROCÉDÉ DE PROTECTION CONTRE LES SURINTENSITÉS
2017-03-01
Patent
Electronic Resource
English
IPC: | H02M 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 , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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