Comparative Finite-Element Studies of Sinusoidal and Single Pulse Controlled Switched Reluctance Machines with Power Converter Considerations

摘要

This paper proposes a four-phase mutually coupled switched reluctance machine (MCSRM) arrangement with single pulse current control strategy, targeting performance improvements of both the machine and the power converter. Previously published works on MCSRM have focused only on machine performance while neglecting the power converters. Designs and comparative studies have been carried out among conventional switched reluctance machine (CSRM), full pitch MCSRM, short pitch MCSRM and single pulse MCSRM with practical specifications. Coupled finite element analysis and circuit simulations have been employed to evaluate performance indices including torque ripple, machine iron/copper loss, power factor, winding current density, power converter losses and power densities. The machine-converter system level investigations have confirmed that in the proposed four-phase MCSRM under single pulse control, improved machine performances can be obtained with reduced power converter loss.