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1. (WO2018078851) ELECTRIC MOTOR DRIVE DEVICE

Pub. No.:    WO/2018/078851    International Application No.:    PCT/JP2016/082247
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Tue Nov 01 00:59:59 CET 2016
IPC: H02P 27/06
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: IWAZAKI Kenji
岩崎 憲嗣
ARISAWA Koichi
有澤 浩一
YAMAKAWA Takashi
山川 崇
UEMURA Keisuke
植村 啓介
TOYODOME Shinya
豊留 慎也
Title: ELECTRIC MOTOR DRIVE DEVICE
Abstract:
An overcurrent protection circuit (60) of an electric motor capable of selecting any of a plurality of wire connection states has a plurality of determination circuits (62, 63), a combining circuit (66), and an invalidation circuit (65). The combining circuit (66) combines the comparison results obtained in the plurality of determination circuits. The invalidation circuit (65) invalidates a part of the comparisons performed in the plurality of determination circuits. The overcurrent protection circuit has one output, so that only one terminal suffices for receiving the output of the combining circuit for controlling driving and stopping of an inverter. In addition, since the overcurrent protection circuit is configured by hardware, fast protection can be performed.