Patent ID: 9219437
Filing Date: 2015-12-22
Classification: H02P

Abstract:
1. A motor comprising: a motor driving unit outputting a plurality of switching signals and one of estimated three-phase voltages, in response to a control signal and a compensated position signal; a pulse width modulation (PWM) inverter outputting three-phase voltages and one of estimated three-phase currents corresponding to the one estimated phase voltage, in response to the plurality of switching signals; a motor unit operating based on the three-phase voltages and outputting a position signal according to the operation; and a position signal compensation unit receiving the position signal from the motor unit, the estimated phase voltage from the motor driving unit and the estimated phase current from the PWM inverter, detecting a phase difference between the estimated phase voltage and the estimated phase current, and compensating for the position signal in response to the detected phase difference to thereby generate the compensated position signal for the motor driving unit.