Motor control apparatus, and washing machine and drying machine using the same

摘要

A motor control apparatus includes an inverter circuit for supplying driving power to a motor, a motor current detector for detecting current flowing through the motor, an inverter controller for controlling the inverter circuit based on the output of the detector. The inverter controller has a setting unit for setting various command values to control motor driving status, and a processing unit for controlling the inverter circuit based on the setting on the setting unit. The setting unit sets command value so that a load angle which is an angle between rotor axis and motor applied voltage is operated on the smaller side of the angle that provides the maximum output torque in the load angle-output torque characteristics.