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1. (WO2018123291) INVERTER DRIVING DEVICE AND ELECTRIC VEHICLE SYSTEM IN WHICH SAME IS USED

Pub. No.:    WO/2018/123291    International Application No.:    PCT/JP2017/040530
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Nov 11 00:59:59 CET 2017
IPC: H02M 7/48
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: HARA Takafumi
原 崇文
AJIMA Toshiyuki
安島 俊幸
HOSHINO Katsuhiro
星野 勝洋
ASHIDA Akihiro
蘆田 明広
OYAMA Kazuto
大山 和人
Title: INVERTER DRIVING DEVICE AND ELECTRIC VEHICLE SYSTEM IN WHICH SAME IS USED
Abstract:
The purpose of the present invention is to lower electromagnetic noise while reducing the computing load on a microcomputer. The inverter driving device according to the present invention switches, in a motor control device for controlling a power converter for driving a multi-phase motor by a PWM pulse signal based on a carrier signal, between: a first control mode for updating a command voltage signal to the power converter solely on the mountain side or the valley side of the carrier signal; a second control mode for updating a command voltage signal to the power converter on both the mountain side and the valley side of the carrier signal; and a third control mode for updating a command voltage signal to the power converter solely on one instance of mountain-valley-mountain or valley-mountain-valley of the carrier signal, the switching being performed on the basis of vehicle speed information.