Patent ID: 8994243
Filing Date: 2015-03-31
Classification: H02K

Abstract:
1. An electrical machine comprising: a rotor for rotation about a rotational axis; a single air gap and face engaged stator assembly comprising: an electroconductive coil arranged circumferentially with respect to the rotational axis; a plurality of pairs of side lamination assemblies on opposing sides of said coil for conducting magnetic flux, the pairs of side lamination assemblies being arranged circumferentially with respect to the rotational axis; a plurality of pairs of switch lamination assemblies for conducting the magnetic flux, the pairs of switch lamination assemblies being arranged circumferentially with respect to the rotational axis and positioned adjacent to ends of the side lamination assemblies proximal the rotor; at least one tooth associated with each switch lamination assembly and proximal the rotor and between the coil and the rotor; at least one tooth associated with each switch lamination assembly and proximal the rotor for conducting the magnetic flux between the rotor and the switch lamination assembly; each switch lamination assembly comprising a first group of laminated materials extending generally circumferentially and generally in a radial direction with respect to the rotational axis for conducting the magnetic flux generally circumferentially and generally in the radial direction between the at least one tooth associated therewith and the adjacent side lamination assembly; each side lamination assembly comprising a second group of laminated materials extending generally axially and generally radially with respect to the rotational axis for conducting the magnetic flux generally axially and generally radially; wherein each of said second group of laminated materials has a first leg portion extending in the generally axial direction and adjacent the first group of laminated materials, and a second leg portion extending in the generally radial direction away from the first lag portion, the coil being disposed between the second leg portions of the second groups of laminated materials of each pair of side lamination assemblies; wherein a portion of said first leg portion is configured radially between the coil and the rotor; one or more back returns extending axially and coupling the side lamination assemblies of each pair thereof distal the rotor to conduct the magnetic flux therebetween; wherein the coil is disposed between and at least partially surrounded by the second groups of laminated materials of each pair of side lamination assemblies and the one or more back returns; and wherein the electrical machine is at least one of a transverse flux machine or a commutated flux machine.