Online Winding Reconfiguration of a Multiphase Stator

Abstract

A multiphase machine control implementing vector space decomposition or harmonic plane decomposition for modeling purposes can reconfigure the stator's current distribution to generate magnetomotive force waves with different pole pair numbers simultaneously. The pole pair numbers are an integer multiple of the pole pairs generated by the physical winding configuration. This property can be used for reconfiguring the pole-pair number in real time or increasing the system's torque density. This paper studies the modeling and the impact of symmetrical and asymmetrical winding configurations on the pole-pair number reconfiguration. Furthermore, pole number transition is experimentally verified on a proposed winding configuration.