Patent ID: 10491069

Abstract:
An electric machine employs laminated sheets windings (LSWs) and permanent magnets which rotate about the LSWs. A ‘radial’ embodiment employs magnets which are magnetized radially and LSWs laid parallel to the rotation axis. An ‘axial’ embodiment uses axially magnetized magnets with LSWs laid radially in the plane of the motor. The magnets may be arranged as Halbach arrays. Magnets and LSWs are arranged concentrically with an air gap therebetween; the motor may employ “Large Air Gap Electric Ring” (LAGER) technology. The laminated sheets form a continuous stack of series-connected concentric metal layers; dielectric layers insulate each metal layer from its adjacent layers. Cuts arranged periodically around each LSW run parallel to the rotation axis and extend through all of the metal layers, with adjacent cuts originating on opposite sides of the LSW such that they form a serpentine path for current to flow as it flows around the winding.