Comparative Control Strategy of Asymmetric Bridge Converter for Switched Reluctance Motor

Abstract

Switched Reluctance Motor has many advantages such as high efficiency, starting torque and reliability, simple construction, robustness, and low maintenance become the best achievement of this motor, but there is still major drawback like large torque ripple, acoustic noise and vibration. This paper present the comparative strategic in controlling of Switched Reluctance Motor using asymmetric bridge converter base on magnetizing-demagnetizing mode and magnetizing-freewheeling mode applied on 6/4 Switched Reluctance Motor using Matlab/Simulink. The comparison between the magnetizing demagnetizing and magnetizing freewheeling started with increasing the turn on angle while keep the turn off angle constant and run the simulation until the highest speed reached, then the turn on angle kept constant while the turn off angle increased until high speed reached. The result of the paper is that the asymmetric bridge converter under magnetization demagnetizing achieve better performance in reaching higher speed, and more efficient since draw the smaller current, and the top speed catch earlier compare to the magnetizing freewheeling mode.