Effect of Inductance Model on Sensorless Control Performance of SynRM with Magnetic Saturation

This study investigated the effect of an inductance model on the sensorless control performance of a synchronous reluctance motor (SynRM). For sensorless control, a high-frequency voltage injection method based on the position dependence of the inductance and a extended electromotive force estimation method based on the motor model were applied. In this study, the inductances were modeled in several patterns and applied to the two methods. Then, the characteristics in the steady and transient states were compared. Also, by comparing the characteristics in the full-speed region by combining the two methods, the effect of the inductance model on the sensorless control performance of a SynRM with magnetic saturation was investigated.