| Title |
The Study on Transient Performance Improvement of Sensorless Control Based on Back-EMF Estimation for IPMSM |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.9.1611 |
| Keywords |
Interior permanent magnet synchronous motor; Sensorless control; Extended EMF estimator; PLL-type estimator |
| Abstract |
The transient performance of sensorless control for an interior permanent magnet synchronous motor (IPMSM) based on back-electromotive force (back-EMF) estimation is a critical factor in ensuring high drive system reliability. Although the rotor speed and position can be estimated accurately in steady-state conditions, estimation errors tend to increase during transients such as acceleration, deceleration, and load torque variations. Improving transient stability depends on reducing the overshoot in estimated position and speed errors. In this paper, the maximum overshoot of the estimated position and speed errors during transient states is analyzed, and compensation methods are proposed to reduce these overshoots. The effectiveness of the proposed sensorless control strategy is verified through experimental results. |