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1. (WO2018042672) MOTOR CONTROL DEVICE

Pub. No.:    WO/2018/042672    International Application No.:    PCT/JP2016/076037
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Tue Sep 06 01:59:59 CEST 2016
IPC: H02P 21/22
H02P 29/024
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: HIGASHINO, Makoto
東野 慎
TERASHIMA, Satoru
寺島 覚
Title: MOTOR CONTROL DEVICE
Abstract:
A motor control device of the present invention is applied in a configuration in which a plurality of synchronous motors mechanically connected in parallel with each other are driven by means of a single power converter, and is provided with a vector control unit 110 and an abnormality detection unit 120. The vector control unit 110 divides currents flowing in and out of a plurality of synchronous motors 201a, 201b, 201c, 201d into a q-axis current and a d-axis current and controls the q-axis current and the d-axis current on the basis of a q-axis current command value iq* and a d-axis current command value id*, respectively. The abnormality detection unit 120 detects, on the basis of a q-axis inductance Lq, the q-axis current command value iq*, a synchronous motor rotation speed ω, and a d-axis voltage command value vd*, whether or not erroneous wiring or a disconnection is present in at least one synchronous motor among the plurality of synchronous motors 201a, 201b, 201c, 201d.