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Pub. No.:    WO/2018/078778    International Application No.:    PCT/JP2016/081940
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Fri Oct 28 01:59:59 CEST 2016
IPC: H02P 29/00
Applicants: HITACHI, LTD.
Inventors: NAKAHARA Takashi
中原 崇
SUMITA Satoshi
隅田 悟士
SUZUKI Hideaki
鈴木 英明
ASAI Daisuke
浅井 大輔
金子 悟
IWAJI Yoshitaka
岩路 善尚
Provided is a motor control device capable of minimizing both vibration and power loss even if the characteristics of the vibration and the power loss change due to motor driving environment. An amount of vibration and an amount of loss are estimated from the angular speed, current, and rotor phase of a motor 6. An internal current command is calculated from the degrees of deviations of the estimated amount of vibration, the estimated amount of loss, and actual environment in which the motor 6 is installed from reference values, and an external current command output from an object to be driven by the motor 6 and the internal current command are added to each other to obtain a current command. A feedback control command value is calculated by subtracting the current value of the motor 6 from the current command. A feedforward control command value is calculated from the current value of the motor 6 and added to the feedback control command value, a voltage command value is given to an inverter 5, and the motor 6 is driven.