MOTOR CONTROL DEVICE AND ELECTRIC VEHICLE

WIPO Patent Application WO/2024/101080

A1

Provided is a motor control device that randomly selects a plurality of carrier frequency candidates and disperses a high-frequency component, the motor control device being capable of broadening the dispersion of the high-frequency component and suppressing electromagnetic noise while suppressing the amount of heat emitted from a switching element of an inverter. A motor control device that controls an inverter that supplies AC electric power to an AC motor, characterized in that: the motor control device comprises a carrier frequency generation unit that selects each of the plurality of carrier frequency candidates at a prescribed ratio on the basis of a random number and outputs the result as a carrier frequency, a carrier wave generation unit that generates a carrier wave on the basis of the selected carrier frequency, and a PWM controller that outputs a PWM signal based on the carrier wave to the inverter; and the prescribed ratio is determined on the basis of the frequencies of the plurality of carrier frequency candidates and a prescribed maximum average switching frequency.

JP5462906	Motor control device
WO/2005/069475	DEVICE FOR CONTROLLING MOTOR-DRIVEN POWER STEERING DEVICE
JPS57183207	ELECTRIC VEHICLE DRIVING DEVICE

TANIGUCHI SHUN (JP)
MATSUO KENTARO (JP)
HARA TAKAFUMI (JP)
AJIMA TOSHIYUKI (JP)

PCT/JP2023/037384

May 16, 2024

October 16, 2023

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HITACHI ASTEMO LTD (JP)

H02P27/08; B60L9/18; H02M7/48

JP2020010460A	2020-01-16
JPH0947026A	1997-02-14
JP2021083241A	2021-05-27
JP2019146380A	2019-08-29
US20140268948A1	2014-09-18

POLAIRE I.P.C. (JP)

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