Torque ripple analysis of a 42V fault tolerant six-phase permanent magnet synchronous machine

This paper presents an analysis of the torque ripple of a six-phase fault tolerant permanent magnet synchronous machine (PMSM6) for electrical power steering system (EPS) applications. Opened stator phase is the realistic fault condition that can be imagined for a machine fed by a power converter drive system. The behavior of the machine was analyzed under three different winding fault conditions (open phase). All the obtained results using the finite element method show the performance of the PMSM6 for the application of EPS.