Patent ID: 6236138
Filing Date: 2001-05-22
Classification: H02K

Abstract:
An electromechanical machine comprising:a field producing assembly mounted in said housing so as to define an air gap circumferentially disposed about an axis of rotation, for producing a distribution of magnetic flux varying circumferentially in said gap so as to have P periodic extremes of flux density about said axis;an electrical member disposed in said gap, said electrical and field assemblies being mounted for relative rotation, said electrical member having a circular array of C non-overlapping coils on face thereof, C being an integer greater than P/2, the coils being formed into at least two groups of serially connected coils, all wound in the same rotational direction, each coil of one group being disposed between two coils of other groups, the coils at one end of two coil groups having free ends which are connected together; andswitching means acting as a commutator between said coil groups and a source of power for selectively connecting power to coils at the other end of said two coil groups as said electrical and field members rotate relative to each other, the switching means connecting power to said coil groups so that said two groups conduct current in opposite directions.