Motor control device and power conversion system

Abstract

Provided is a motor control device capable of reducing a loss by controlling a current phase angle based on a change feature of inductance. A motor control device is connected to a power converter that performs power conversion from DC power to three-phase AC power and drives a motor with the three-phase AC power to control the power conversion of the power converter. The motor control device includes: an inductance change detection unit configured to calculate an inductance change feature indicating a change in inductance of the motor in a first phase region including a phase at which an absolute value of one of three-phase AC currents is a maximum; and a current phase angle control unit configured to control a current phase angle based on the inductance change feature.

Dependencies are inferred from the claim text.