A novel flux detection design for switched reluctance motor

Abstract

In this paper, a PWM control strategy of SRM is briefly introduced at first, and then there follows the analysis of ideal flux model by that strategy. An excellent and reliable driver circuit is strongly needed to maintain a normal operation of SRM, and IR2110 is a good choice to ensure accurate switching operation of power electronic devices. A new form of peripheral circuit of IR2110 is suggested with a special charge loop of bootstrap capacitor, which can provide faultless output of trigger switching signals. No doubt, precise flux model demands an exact value of winding resistance and less deviation in integral circuit. Therefore, a newly flux-detecting circuit is eventually proposed to guarantee a better performance of linkage detection.