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1. (WO2018016070) MOTOR CONTROL DEVICE

Pub. No.:    WO/2018/016070    International Application No.:    PCT/JP2016/071529
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Sat Jul 23 01:59:59 CEST 2016
IPC: H02P 21/24
H02P 27/08
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: UEMURA, Keisuke
植村 啓介
SAKAI, Akira
酒井 顕
KUSUBE, Shinsaku
楠部 真作
MASUMURA, Tsukasa
桝村 宰
Title: MOTOR CONTROL DEVICE
Abstract:
An inverter (40) converts a DC voltage from a DC power supply (12) to an AC voltage applied to a motor (15) in which no positional sensor is disposed. A current detection unit (50) detects motor currents (Iu, Iv, Iw) flowing through the motor (15). A control unit (100) generates control signals (S1-S6) for controlling, on the basis of a DC voltage (Vdc) input to the inverter (40) and the detected values of the motor currents (Iu, Iv, Iw), the turning-on/off of a plurality of semiconductor switching elements (Q1-Q6) constituting the inverter (40). The control unit (100) controls the inverter (40) during the feedback-control of the motor currents so that there is a timing at which the motor currents decrease during an operation for raising the rotational speed of the motor (15).