A motor control device controls driving of an AC motor that is connected to a power transformer that performs power transform from DC power to AC power and outputs a rotational driving force generated by driving using the AC power via a speed reducer, and includes a carrier generator that generates a carrier wave, a carrier frequency adjuster that adjusts a frequency of the carrier wave, and a gate signal generator that performs pulse width modulation on a voltage command according to a torque command using the carrier wave and generates a gate signal for controlling an operation of the power transformer, wherein the carrier frequency adjuster changes a phase difference between the voltage command and the carrier wave based on the torque command and a rotational speed of the AC motor, and adjusts the frequency of the carrier wave such that a difference between a meshing frequency of the speed reducer and a harmonic component of a fundamental harmonic current according to the voltage command falls within a predetermined range.
MOTOR CONTROL DEVICE, ELECTROMECHANICAL INTEGRATED UNIT, HYBRID SYSTEM, ELECTRIC POWER STEERING SYSTEM, AND MOTOR CONTROL METHOD
2024-07-11
Patent
Electronic Resource
English
IPC: | 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 / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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