A power conversion circuit is mounted in a vehicle and controls an output torque of the rotating machine based on a requested command torque. A driving apparatus of a switching element controls a current flowing to the rotating machine. The driving apparatus sets at least one of a turn-on speed and a turn-off speed for the switching element to a plurality of switching speeds that are discretely determined, based on a parameter that is correlated with the output torque and has a controllable value. The driving apparatus turns on or off the switching element at the switching speeds. The switching speeds are allocated to the respective magnitudes of the parameter at uneven intervals, and determined such that the number of allocated switching speeds is greater in a range in which an occurrence frequency of the parameter is high, compared to a range in which the occurrence frequency is low.
Driving apparatus for switching element
2017-10-17
Patent
Electronic Resource
English
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 / H03K PULSE TECHNIQUE , Impulstechnik |
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