Adaptive Vector Control with Real-Time Simultaneous Identification of All Electric Parameters for Permanent-Magnet Synchronous Motors

This paper proposes a new method for configuring and designing an adaptive vector control system for permanent-magnet synchronous motors (PMSMs). The adaptive vector control system based on the proposed method adaptively identifies all four parameters of a PMSM simultaneously, and exhibits the following performance. Over the range of 1% to 100% rated speed, the steady-state relative torque error between the command and response is maintained below 0.2% under ideal conditions. Even when the four parameters vary simultaneously and discontinuously, adaptive identification is completed approximately 0.2s after the change, and the desired performance is achieved. Even when the motor speed varies at an acceleration rate of 250rad/s2, the desired performance is achieved without being affected by the speed change. The proposed method can be applied to both salient-pole and non-salient-pole PMSMs without any modification.