A switched reluctance motor has several features, including simple construction, high reliability, possible operation in high temperature, inherent fault tolerance, and low manufacturing cost make it more attractive for electric vehicle application. However, large torque ripple, acoustic noise and vibration are its major drawbacks. This paper present a fivephase SRM drive which features higher torque production, low torque ripple, very low level of vibration with flexibility in control. The proposed drive is using a new and low-cost converter configuration in which, unlike in the previously proposed SRM drives a pair of phase winding is sharing one diode and one IGBT. Thus reducing the total number of semiconductor devices. The detailed analysis and operation of proposed converter is presented. This paper also present a computation of optimal turn-on and turn-off angle based on non-linear model.
<span>A novel four-phase active boost switched reluctance inverter (SRI) having capability of improving performance of high speed SRM drive is presented. The proposed SRI provides fast fluxing as well as rapid de-fluxing with only two additional small voltage rating boost capacitors as compared to conventional SRI. Two boost capacitors were connected in such a way that each boost capacitor handles two alternate phases. This is an alternate solution to the problem caused by the overlap phase current which prevents the boost capacitor voltage to buildup. In proposed SRI, either of a boost capacitor and dc-link source forms the series connection during fluxing and de-fluxing period. Thus, the higher voltage for fluxing of SRM and negative higher voltage for de-fluxing of SRM are obtained. The operating mode analysis of proposed SRI are given in detail. The simulation for the conventional and proposed SRI has been performed and compared. And results justify the superior performance of proposed SRI<span>.</span></span>
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