Patent ID: 8760025
Filing Date: 2014-06-24
Classification: H02K

Abstract:
1. An interior permanent magnet machine comprising: a wound stator; a rotor core including at least one pole, and defining a plurality of cavities in the at least one pole, wherein the rotor core is configured for magnetically interacting with the wound stator to rotate about an axis of rotation; and a plurality of magnets, with one of the plurality of magnets disposed within each of the plurality of cavities in the at least one pole; wherein each of the plurality of magnets of the at least one pole include a cross section perpendicular to the axis of rotation defining an arcuate shape having an arc center; and wherein the arc centers of each of the plurality of magnets of the at least one pole are spaced from each other and are spaced from a pole axis extending radially outward from the axis of rotation.