A motor drive system includes a motor for driving a vehicle, an inverter, and an electronic control unit. The electronic control unit is configured to change a carrier frequency as a frequency of a carrier wave, according to operating conditions of the motor. The electronic control unit is configured to set the carrier frequency to a protection frequency when the operating point of the motor lies in a lock region, and the motor is not in an accelerating or decelerating state, and set the carrier frequency to a non-protection frequency higher than the protection frequency, when the operating point lies in the lock region, and the motor is in the accelerating or decelerating state.
MOTOR DRIVE SYSTEM, AND METHOD OF CONTROLLING MOTOR DRIVE SYSTEM
2019-12-26
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 |
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