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AssigneeHitachi Astemo, Ltd.
InventorsTakafumi HARA, Takaya TSUKAGOSHI, Shigehisa AOYAGI, Hideki MIYAZAKI
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This motor control device is connected to an inverter for converting DC power to AC power to output the AC power to a motor and controls the operation of the inverter in accordance with a torque command, thereby controlling the drive of the motor using the inverter. The motor control device comprises: a carrier wave generation unit that generates a carrier wave; a carrier frequency adjustment unit that adjusts a carrier frequency that is the frequency of the carrier wave; and a PWM control unit that performs pulse width modulation on a voltage command using the carrier wave and generates a PWM pulse signal for controlling the operation of the inverter. The carrier frequency adjustment unit adjusts the carrier frequency so that the carrier frequency when the motor performs entrainment drive becomes higher than the carrier frequency when the motor does not perform the entrainment drive.
A motor control device connected to an inverter that converts DC power into AC power and that outputs the AC power to a motor, the motor control device controlling operation of the inverter according to a torque instruction, thereby controlling drive of the motor, using the inverter, the motor control device comprising:
A motor control device connected to an inverter that converts DC power into AC power and that outputs the AC power to a motor, the motor control device controlling operation of the inverter according to a torque instruction, thereby controlling drive of the motor, using the inverter, wherein
Dependencies are inferred from the claim text.