Implementation and Experimental Validation of Ultrahigh-Speed PMSM Sensorless Control by Means of Extended Kalman Filter

This article presents an experimental validation of the implementation of a sensorless control algorithm for an ultrahigh permanent magnet synchronous motor by means of an extended Kalman filter, up to 240 000 rpm. The considered application is the air compressor for a fuel cell in an electric car. It is shown that the extended Kalman filter can be used for the ultrahigh-speed drives, without any loss in accuracy and robustness. Proper experimental results are shown regarding the rotor position accuracy and dynamics of accelerations. The extendibility of the presented algorithm to different machines is shown by its implementation with nine different motors. In this article, additional aspects, such as the sensitivity of the algorithm toward changes in the back EMF constant and the impact of temperature variations, are considered.