Different virtual stator winding configurations of open-end winding five-phase PM machines for wide speed range without flux weakening operation

Abstract

This paper presents a specific control strategy of double-ended inverter system for wide-speed range of open-end winding five phase PM machines. Different virtual winding configurations (star, pentagon, pentacle and bipolar) can be obtained by choosing the appropriated switching sequences of two inverters. The motor's speed range is thus increased.