Torque ripple reduction in fractional-slot concentrated-winding machines with saliency

摘要

Fractional slot, concentrated-winding (FSCW) machines with saliency are being researched extensively for vehicle traction motors. However, they exhibit higher torque ripple than their equivalents without saliency. This paper identifies the origin of the torque ripple and explores potential solutions for its reduction through modification of the stator slot openings. The concept is demonstrated through modification of an in-wheel motor design for high performance electric cars.