Japan, Sept. 18 -- HITACHI ASTEMO LTD has got intellectual property rights for 'MOTOR CONTROL DEVICE AND ELECTRIC VEHICLE.' Other related details are as follows:
Application Number: JP,2022-179289
Category (FI): H02M7/48@F,H02P27/08,B60L9/18@J
Stage: PROBLEM TO BE SOLVED: To provide a motor control device spreading harmonic component by randomly selecting a plurality of carrier frequency candidates, capable of suppressing a heat generation amount at a switching element of an inverter and suppressing electromagnetic noise by widening the spread of the harmonic component.SOLUTION: A motor control device for controlling an inverter supplying AC power to an AC motor, includes: a carrier frequency generation part for selecting each of a plurality of carrier frequency candidates with a predetermined ratio based on random number and outputting it as a carrier frequency; a carrier wave generation part for generating a carrier wave based on the selected carrier frequency; and a PWM controller for outputting a PWM signal based on the carrier wave to the inverter, in which the predetermined ratio is determined based on the frequency of the plurality of carrier frequency candidates and a predetermined maximum average switching frequency.SELECTED DRAWING: Figure 2 (Grant)
Filing Date: Nov. 9, 2022
Publication Date: May 21, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
