Encoderless Rotor Position Estimation of a Switched Reluctance Drive Operated under Model Predictive Control

Abstract

One of the promising technologies of encoderless rotor position and speed estimation for the motors with magnetic anisotropy is the analysis of operation of model predictive control. Idea of the method is to track the difference between the prediction and actual behaviour of the motor currents which should match if the rotor position estimation is correct. However, this method was not applied for switched reluctance drive yet. This paper proposes the rotor position and speed estimator for switched reluctance motor operated under continuous control set model predictive control. It implements phase-locked loop fed by the error between the referenced current and it actual value. The estimator was examined using a simulation model and provides fast and accurate speed and position tracking.