Quick-Response Technique for Simplified Position Sensorless Vector Control in Permanent Magnet Synchronous Motors

Abstract

We developed a quick-response technique for simplified vector control without using position sensors for permanent magnet synchronous motor drives. Our original simplified vector control has neither current control nor speed control, and the speed estimation response is limited by motor constants. We developed a highly stable method that equivalently increases the damping ratio, which is related to motor constants by the control side. Time domain simulations and experiments were perfomed to demonstrate the effectiveness of the proposed method.