Patent ID: 6093992
Filing Date: 2000-07-25
Classification: H02K

Abstract:
An electrical machine comprising:at least one stator defining at least one pair of stator slots;at least one armature winding lodged in said stator slots; anda rotor rotatable with respect to the stator, the rotor including means for selectively establishing closed magnetic circuits passing around turns of the at least one armature winding,wherein the rotor defines a first circumferential direction and a second circumferential direction opposed to said first direction, said means for selectively establishing closed magnetic circuits comprising at least one permanent magnet adapted to establish a magnetic flux looped on itself in said first circumferential direction, and at least one excitation winding for establishing an adjustable local magnetic flux in said second circumferential direction, the magnets and excitation windings being arranged alternately along the periphery of the rotor.