《《00108453SRM Inverter Topologies A》.pdf

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 27, NO. 6, NOVEMBERIDECEMBER I99 1 SRM Inverter Topologies: A Comparative Evaluation Slobodan Vukosavid and Victor R. Stefanovid, Fellow, IEEE Abstract-Several inverter power circuits that are suitable for L l switched reluctance motor (SRM) drives are analyzed and com- pared with each other. The comparison is based on the peak voltage and current ratings of the power switches and on the size and peak ratings of the dc-link components. Because the con- verter choice depends on the motor design, the converter analy- sis and selection are done for a high-speed, 6/2 SRM suitable- for-a-spindle drive and a high-torque 8/6 motor. Experimental results obtained for a high-torque drive are included. I. INTRODUCTION LTHOUGH SRM drives have not yet found broad 34 Aindustry acceptance, they continue to attract research interest, stimulated mainly by the promise of simple and rugged motor construction, the possibility of high motor speeds, high torque-to-inertia ratio, an inverter with a re- duced number of power switches, and an overall robust drive. This research activity has resulted in a number of inverter topologies, some of which have been described in the literature [11- [6]. However, although a comparison of the required kVA ratings between an SRM and an induction drive inverter was done [7], no comparison exists between different inverter topologies that are suitable for an industrial SRM drive. This paper c