A power conversion circuit includes first to fourth switching elements connected in series between ground and high voltage electrical paths, a first reactor, a main battery, a second reactor, a sub battery, a high voltage sensor for detecting a high voltage VH between the ground and high voltage electrical paths, and a controller. Upon issuance of an instruction for turning off all of the first to fourth switching elements, the controller determines that the third switching element is experiencing an ON failure when the high voltage VH is equal to the sum of a battery voltage VB1 of the main battery and a battery voltage VB2 of the sub battery, to thereby allow electrical power to be transferred between the batteries and a load even in the event of occurrence of the ON failure in the switching element.
Power conversion circuit
23.05.2017
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / 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 |
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