Patent ID: 6097127
Filing Date: 2000-08-01
Classification: H02K,H02P

Abstract:
A permanent magnet direct current machine comprising:said machine having a stator element,said machine having a rotor element,said elements defining an air gap between them, andpoles, on said rotor, said poles comprising permanent magnets for providing magnetic flux across said air gap,said stator element having more slot paths, than there are poles in the rotor, each slot path having coils,said rotor element being rotatable about an axis,the gross angular width of each slot of each slot path, as measured in a plane perpendicular to said axis, being small as compared to the gross angular width of one of said poles as measured in said plane,each said pole, at any instant in time, facing a group of said coils,the group of coils which at any instant in time, faces a magnet pole, producing a flux which passes around such group and passes through the space between said group and the magnet pole that faces the group.