A Novel Drive Circuit for Switched Reluctance Motors with Bipolar Current drive

This paper proposes a novel drive circuit for three-phase switched reluctance motors (SRMs) with bipolar current drive. Asymmetric H-bridge drive circuit is often used as a SRM drive circuit, and only positive current flows through windings in the SRMs. The SRMs can also generate positive torque even if the motor current is negative during positive torque generation angles.In this paper, a bipolar current drive and a suitable drive circuit for SRMs are discussed, and the effectiveness of the proposed drive system is confirmed by some simulations and experimental results.