Analysis of Stator Winding Inter-turn Short-circuit Fault in Interior and Surface Mounted Permanent Magnet Traction Machines

Recently, permanent magnet synchronous machines (PMSMs) are widely used in electrified vehicle applications due to their high efficiency and high torque density characteristics. Hence, in an approach towards fault prognosis through online monitoring, it is of paramount importance to analyze inter-turn short-circuit fault whose occurrence is expected as the insulation wears out due to the frequent start-stop duty of both surface-mounted permanent magnet (SPM) and interior permanent magnet (IPM) traction machines. This paper puts an effort to analyze the performance of SPM and IPM machines under the effect of inter-turn short-circuit fault. This research work serves as an initial step towards development of an adaptive fault tolerant control scheme with less computational and hardware complexity for both the aforementioned machine drives.