Controlling a switched reluctance motor with a conventional three phase bridge instead of asymmetric H-bridges

This paper proposes a new driving method for switched reluctance motor (SRM), by using the standard full-bridge inverter. In spite of changing the internal structure of an SRM, the proposed method uses an extra ring structure circuit to make it possible for the inverter to drive the SRM. Next to the standard converter, a controllable DC source is needed. With the theoretical analysis and calculation, the reference value of the circulating current in the ring structure is determined and the new method is proven via simulation. A comparison is made with the conventional method for driving an SRM: the asymmetric H-bridges. Also the current studies are then made to confirm that the SRM can be controlled without lowering the performance of the machine. The experimental verification is also made under different conditions, as well as the comparison with the simulation results.