Torque ripple reduction of Switched reluctance motor using improved torque sharing functions

Regarding to the past decades, Switched reluctance motor usage in the industry is very limited. Non-linear magnetic function and lack of accurate analytical models are some examples of obstacles on the application development of this motor. In comparison to other motors, discrete oscillations of produced torque and working in magnetic saturation zone have caused considerable mechanical and audio vibrations. One of the torque control methods and mitigation of its oscillation is through using torque sharing functions. Through the method, torques of each phase, respecting of pre-defined function, are controlled so that the produced torques of commutated phases, remain constant and equal to reference torque. In this paper, conventional torque sharing functions are examined and modified considering the motor characteristics and the obtained results using the proposed method are presented.