基于滤波变换的自适应反电动势观测器用于表贴式永磁同步电机无传感器控制

Most existing back-electromotive-force (EMF) observer necessitates a phase-locked loop (PLL) for real-time observer parameter updating, i.e., the rotor’s angular speed. However, the observer-PLL coupling effect complicates the back-EMF observer design and poses challenges in ensuring stability. In this article, a filtered transformation-based adaptive back-EMF observer (FT-AO) for surface-mounted ...