Patent ID: 7247964

Claim:
An electrical machine comprising: a stator including a stator core and windings disposed on the stator core; and a rotor adapted to magnetically interact with the stator to promote rotation of the rotor about an axis, the rotor including a rotor core and a plurality of magnetized arcs supported by the rotor core, the plurality of magnetized arcs defining an outermost circumference, the rotor and the plurality of magnetized arcs including a first magnetized arc, a discontinuity disposed adjacent to the first magnetized arc along the outermost circumference, a second magnetized arc disposed adjacent to the discontinuity along the outermost circumference, a magnetization pattern of alternating magnetic poles formed on the plurality of magnetized arcs, the magnetization pattern including a first magnetic pole skewed with respect to a second magnetic pole to form an arc of magnetization skew, wherein the discontinuity is disposed in the arc of magnetization skew, and wherein each magnetized arc of the plurality of magnetized arcs includes at least two magnetic poles along the outermost circumference.