Patent ID: 7852037
Filing Date: 2010-12-14
Classification: H02K,H02P

Abstract:
1. A polyphase motor comprising: a) a drive unit operable to: i) synthesize N phases of alternating current where N is more than three per 180 degrees; and ii) select between applying a Type A and a Type B harmonic drive waveform for said N phases, wherein said Type A and Type B harmonic drive waveforms each comprise at least one harmonic order that the other does not comprise; and b) a stator and a rotor, comprising: i) N stator winding phases, driven by said drive unit; and ii) profiles of said stator and rotor, suited to produce substantial reluctance based rotor rotation when a Type A harmonic drive waveform is applied; and iii) rotor windings, suited for producing substantial inductance based rotor rotation when a Type B harmonic drive waveform is applied.