A new intelligent stator reconfigurable ampere response (ISRAR) method for open phase fault tolerant operation of multiphase machines

This paper proposes a method of analytical calculation for fault-tolerant current reconfiguration. The method is based on interference between torque waves produced from remaining healthy phase windings of multiphase permanent magnet synchronous machine (PMSM). In the postfault operation an average torque of 94% of non-reconfigured currents strategy can be achieved with the reconfigured currents having amplitude of healthy operation. The method can be realized for a constraint of summation of phase currents to be zero.