Motor control device and motor control method

• Main Authors: TSUKAGOSHI TAKAYA, HARA TAKAFUMI, SATO TAISUKE, HOSHINO KATSUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2024
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

A motor control device for controlling the driving of a motor connected to a power converter for performing power conversion from DC power to AC power to be driven by the AC power, the motor control device comprising: a carrier wave generation unit for generating a carrier wave; a carrier frequency adjustment unit that adjusts the frequency of the carrier; and a gate signal generation unit that pulse-width modulates a voltage command corresponding to a torque command using the carrier wave and generates a gate signal for controlling the operation of the power converter, the carrier wave frequency adjustment unit adjusts the frequency of the carrier wave on the basis of the torque command and the rotational speed of the motor, and the gate signal generation unit generates a gate signal for controlling the operation of the power converter. The phase of the pulsating torque caused by the command current generated by the pulse width modulation using the carrier wave and the phase of the pulsating torque caused by