Simultaneous Torque and Radial Force Ripple Mitigation in DQ Controlled Switched Reluctance Machines

Switched reluctance machines (SRMs) generate high torque and radial force ripples which results in acoustic noise and mechanical vibrations. It has been a challenge to reduce vibrations while maintaining the high power densities for SRMs. This paper proposes a simultaneous torque and radial force ripple reduction algorithm using multi-objective current profile optimization for a DQ-Controlled SRM. 3D mechanical and Acoustic FEA are performed to assess the performance of the proposed algorithm compared to conventional one in reducing acoustic noise and vibrations. The FEA simulation results demonstrated that the optimized current profile using proposed method reduces the acoustic noise by 11 dBA at rated operating conditions.