Patent ID: 6121705
Filing Date: 2000-09-19
Classification: H02K

Abstract:
An electrical machine capable of functioning both as a motor and a generator at the same time, the electrical machine comprising:an outer stationary member comprising a plurality of stator windings formed therein, the stator windings configured to generate an electrical current when the electrical machine is functioning as a generator, wherein each stator winding is wound to form an alternating pole adjacent to each other;a first inner rotor housed inside the outer stationary member, wherein the first inner rotor includes inner and outer surfaces formed by one of either a first plurality of coil windings or a first plurality of permanent magnets with alternating poles;a second inner rotor housed inside the first inner rotor and configured to rotate coaxially with the first inner rotor and formed by one of either a second plurality of coil windings or a second plurality of permanent magnets with alternating poles; andan armature shaft positioned inside the second inner rotor configured to provide a mechanical output,wherein the first and second inner rotors are mounted on one way bearings in order to allow movement in a single direction.