Torque Ripple Minimization of Series Connected Split Phase PMSM under OC Fault

This article proposes a modified switching technique to minimize rms torque ripple under regular operation and open circuit fault conditions of two series-connected split-phase Permanent Magnet Synchronous Machines (PMSM). The modified switching technique is based on Space Vector Pulse Width Modulation (SVPWM) that effectively reduces switching torque ripples while eliminating low-order harmonics ripple. The simulation results for normal and 1-ϕ OC fault operations validate that the proposed technique is superior to the existing techniques during steady-state condition.