Analysis and a Compensation Method for Torque Ripple caused by Position Sensor Error in PMSM's Vector Control

PMSM의 벡터제어시 위치센서 오차에 의해 발생하는 토오크 리플에 대한 해석과 그 보상 방법

Position information is very important when driving the Permanent Magnet Synchronous Motor(PMSM). Generally, resolver is used to obtain exact position information. However, it generates periodic position errors due to the transformer ratio difference and excitation signal distortion. When the vector control is done with the position information that includes position error, torque ripple is periodically generated. This paper proposes the solution through analysis of above problem. Also, it’s validity is verified by simulation and experiment.