Static-Errorless Position Estimation for Sensorless PMSM Drives With Enhanced Robustness Against the Full-Frequency Domain Disturbance

The back-electromotive force (BEMF) model-based position estimation is attractive for sensorless permanent magnet synchronous motor (PMSM) drives. However, the conventional method cannot ensure the robustness against the full-frequency domain disturbance, which results in the position estimation error. To address this problem, this article proposed a static-errorless position estimation strategy f...