A Continuous Toroidal Winding SRM With 6- or 12-Switch DC Converter

A new toroidally wound switched reluctance machine (TSRM) with a single continuous multitapped winding is presented. This machine may be driven by a 6-switch asymmetric converter that supplies unipolar coil currents or by a 12-switch voltage source converter that supplies bipolar coil currents. The TSRM magnetic design and power electronic control is described, and its performance is compared with a conventional switched reluctance motor (CSRM) and with a previously reported toroidal format switched reluctance machine that utilizes six discrete winding coils in a three-phase wye connection (WSRM) driven by a voltage source inverter. A fixed 6-4 CSRM magnetic circuit design is selected for the comparative analysis of the three machine topologies by static and dynamic finite-element simulations.