Sensorless Control of High-Speed Surface Permanent Magnet Synchronous Motors for Enhanced Dynamic Performance

This paper presents an advanced sensorless control technique for high-speed surface permanent magnet synchronous motors (SPMSMs) under low switching-to-fundamental frequency ratios. The algorithm proposed aims to enhance the dynamic performance of the system while simultaneously ensuring robust steady-state characteristics. The paper begins by addressing the challenges associated with rapid control of high-speed motors. Next, the proposed algorithm is presented in detail, highlighting the use of direct eigen control which utilize the eigen-based discrete model of SPMSM and sliding mode observers to achieve high dynamic performance without the need for position sensors. The effectiveness of the proposed algorithm is demonstrated through simulation and experiment.