Patent ID: 7466092
Filing Date: 2008-12-16
Classification: H02K

Abstract:
1. A multi-phase motor apparatus comprising: a plurality of electrical coils; a fixed stator energized by said plurality of electrical coils, said fixed stator having a central stator pole and a pair of lateral poles; a mobile rotor positioned interior of said fixed stator, said mobile rotor having N pairs of poles radially magnetized in alternate directions, N being no less than 4 but not a multiple of 3, said fixed stator having P×9 identical radially extending poles spaced apart by 40°/P directed toward said mobile rotor, the poles of said fixed stator being positioned in a common plane, said poles of said fixed stator arranged consecutively three by three so as to define a phase, said phase being a W-shaped circuit that groups three consecutive adjacent poles of said fixed stator of said central stator pole and said pair of lateral poles, said pair of lateral poles being unwound, said central stator pole bearing a winding of said phase; and a position detecting means for detecting a position of said mobile rotor arranged in the common plane of said poles of said fixed stator and positioned exterior of said mobile rotor, said position detecting means received in a housing positioned equidistant between two consecutive lateral poles of said fixed stator which are not in the same phase, said position detecting means being positioned in a region free of magnetic flux generated by said plurality of electrical coils.