A control method of inverter for driving motor including a magnet, comprises detecting a rotation state of the motor by a rotation sensor, detecting current of the motor by a current sensor, calculating, based on a torque command value, a detection value of the rotation state detected by the rotation sensor, and detection current detected by the current sensor, a voltage command value for controlling a voltage of the motor by a controller for controlling the inverter, specifying a value of at least one of a local maximum value, a local minimum value, and an average value of the torque voltage command value included in the voltage command value as a torque determination target command value by the controller, comparing a demagnetizing determination threshold value with the torque determination target command value by the controller, and determining whether or not demagnetization of the magnet occurs in accordance with the compared result.
INVERTER CONTROL METHOD AND INVERTER CONTROL DEVICE
WECHSELRICHTERSTEUERUNGSVERFAHREN UND WECHSELRICHTERSTEUERUNGSVORRICHTUNG
PROCÉDÉ DE COMMANDE D'ONDULEUR ET DISPOSITIF DE COMMANDE D'ONDULEUR
2022-02-09
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 |