Search International and National Patent Collections

1. (WO2018185877) MOTOR CONTROL DEVICE

Pub. No.:    WO/2018/185877    International Application No.:    PCT/JP2017/014231
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Thu Apr 06 01:59:59 CEST 2017
IPC: H02P 21/14
H02P 21/18
H02P 21/22
H02P 27/06
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: MASUMURA, Tsukasa
桝村 宰
UEMURA, Keisuke
植村 啓介
SAKANOBE, Kazunori
坂廼邉 和憲
KUSUBE, Shinsaku
楠部 真作
Title: MOTOR CONTROL DEVICE
Abstract:
This motor control device is provided with: a power conversion circuit which applies a voltage to a motor in response to a voltage command value; a current detection means which outputs a current detection value, i.e. a value obtained by detecting a current supplied to the motor from the power conversion circuit; and a control unit. The control unit is provided with: a current controller for calculating the voltage command value in response to a current command value; a magnetic flux estimator which outputs an estimated angular velocity and an estimated magnetic flux of the motor on the basis of the voltage command value and the current detection value; a magnetic flux controller which adjusts the current command value such that the estimated magnetic flux becomes a magnetic flux command value; and a velocity controller which adjusts the current command value such that the estimated angular velocity becomes an angular velocity command value. The control unit switches the combination of the presence or absence of the application of the velocity controller and the presence or absence of the application of the magnetic flux controller in the adjustment of the current command value, switches from a synchronous current mode to a synchronous magnetic flux mode, and subsequently switches to a mode in which the velocity controller and the magnetic flux controller are applied.