Patent ID: 7863784
Filing Date: 2011-01-04
Classification: H02K

Abstract:
1. An electromechanical machine comprising: a stator; and a rotor, wherein the stator comprises at least one stator module comprising a plurality of toroid-shaped electromagnets, wherein each of the electromagnets are arranged along an arc a predetermined distance apart defining a stator module arc length, each of the electromagnets having a gap, wherein the rotor comprises a disc and a plurality of permanent magnets spaced side by side about a periphery of the disk and arranged so as to have alternating north-south polarities, the rotor adapted to pass the permanent magnets through the gaps of the electromagnets, the permanent magnets being sized and spaced such that within the stator module arc length the ratio of permanent magnets to electromagnets is N+1 to N, where N equals a number of electrical excitation phases to be applied to the electromagnets.