Sensorless control using improved stator flux estimator for high-speed induction motors

In this paper, a sensorless control scheme using improved stator flux estimator for high speed induction motors has been proposed to compensate a Programmable Low Pass Filter. This paper has analyzed the affect between the estimated speed error and the phase error of the stator flux in high speed range. The estimated speed error compensation scheme has also proposed. The validity of the proposed schemes has been proven by the simulation and experiment results.