A Transient Stability Analysis of Sensorless Control for IPMSM

This study investigates the transient performance of sensorless control strategies for Interior Permanent magnet Synchronous Motors (IPMSMs), focusing on back-electromotive force (back-EMF) estimation techniques with Phase Locked Loop (PLL) type estimator.The stability of gain selection for each controller comprising the sensorless control algorithm was analyzed, with particular focus on ensuring reliable operation during both acceleration and deceleration phases of motor speed variation.The proposed controller design methodology was validated through simulation, confirming the effectiveness of gain tuning and the robustness of the sensorless control system under transient conditions.