A stator assembly incorporating permanent magnets for an inductor machine

摘要

The stator 102 comprises a plurality of circumferentially spaced-apart stator poles 106 magnetically coupled to one another, each stator pole 106 having an armature winding thereabout and comprises a slot having a radially-extending circumferentially-polarised permanent magnet located therein. The stator has 6n stator poles (where n is a positive integer not equal to zero) and the rotor has either 13n rotor poles or 14n rotor poles (where n is a positive integer not equal to zero). Each stator pole 106 may be spaced from an adjacent stator pole 106 by a distance which is at least equal to the width of a stator pole 106. In a further arrangement, consecutive stator poles alternately comprise magnet-containing stator poles and magnet-free stator poles. Each magnet-containing stator pole has an armature winding.