Patent ID: 9143067
Filing Date: 2015-09-22
Classification: H02P

Abstract:
1. A motor control device configured to detect a rotor position of a permanent magnetic synchronous motor through sensorless control in a controller, the motor control device comprising: an inverter that is configured to detect an electric current flowing through a coil of the motor; a Pulse Width Modulation (PWM) signal generating unit that is configured to detect, via the inverter, a voltage applied to the coil of the motor; a rotor position detecting unit configured to detect: a target current phase setting unit configured to set a target current phase on the basis of the current phase detected by the rotor position detecting unit; a revolution number detecting unit that is configured to detect: a voltage peak value detecting unit that detects an applied voltage peak value of a voltage applied to the coil on the basis of the revolution number difference detected by the revolution number detecting unit; a phase voltage setting unit that is configured to set a target voltage on the basis of the target current phase set by the target current phase setting unit and the applied voltage peak value detected by the voltage peak value detecting unit; and a feed-forward control unit configured to: