Six-phase induction machine model for simulation and control purposes

The aim of this paper is to develop a six phase induction machine (6PIM) model suitable for the simulation of this machine in any system with control circuits and/or connections to the grid by means of power electronics converters. The circuit-oriented approach has been chosen in order to represent the 6PIM model as a rotating transformer. In fact, a class of universal machine model has been built to be used with simple input electrical parameters such as stator and rotor resistances, self, leakage and mutual inductances. With the model, it is possible to simulate any kind of asymmetry in both stator and rotor sides with or without variations of the machine parameters. A specific six-phase induction machine model, using only resistances, inductances and controlled voltage sources, has been developed. The coupling effects between stator and rotor have been taken into account by the computation of stator-rotor mutual inductances. The performances of the model have been verified by comparison between simulation and experimental results on a 0.09kW-14V-50Hz-2 poles 6PIM working with different levels of the load torque in a healthy and faulty mode.