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1. (WO2018179620) ROTATING ELECTRIC MACHINE CONTROL DEVICE

Pub. No.:    WO/2018/179620    International Application No.:    PCT/JP2017/045564
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Dec 20 00:59:59 CET 2017
IPC: H02P 6/18
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KOJIMA, Tetsuya
小島 鉄也
KATO, Sho
加藤 将
Title: ROTATING ELECTRIC MACHINE CONTROL DEVICE
Abstract:
A control device for a rotating electric machine (1) is characterized by being provided with: a current detector (2) for detecting rotating electric machine current flowing through the rotating electric machine (1); a position estimator (4) for estimating the rotor position of the rotating electric machine (1) on the basis of the rotating electric machine current; a controller (5) for calculating, on the basis of information on the rotating electric machine current and the rotor position, a drive voltage command for driving the rotating electric machine (1) and outputting a rotating electric machine voltage command obtained by adding a position estimation voltage command for each phase of the rotating electric machine (1) to the drive voltage command, said position estimation voltage command being used for estimating the rotor position; and a voltage applier (3) for applying a voltage to the rotating electric machine (1) on the basis of the rotating electric machine voltage command. The position estimator (4) extracts position estimation current included in the rotating electric machine current and changing attributable to the position estimation voltage command and estimates the rotor position of the rotating electric machine (1) from a DC component of the amplitude of the extracted position estimation current, said DC component not changing according to the rotor position.