This chapter introduces two methods for effectively reducing torque rippleTorque ripple. The novel radial-flux surface-mountedSurface-mounted PM (SPM) machine with quasi-cylindrical pole pattern (QCPP) is considered to be a topology structure that can effectively reduce torque rippleTorque ripple while achieving high average torque. The cogging torque and torque rippleTorque ripple of the surface-mountedSurface-mounted machines could be greatly decreased due to the adoption of large eccentricEccentric distance and the reduction of high-order airgap flux density harmonicHarmonics. Moreover, the increase of fundamental flux component helps to improve torque generation well. Additionally, the magnet poles are semi-embedded into the rotor, and thus the sleeve in conventional SPM machines is no longer necessary, which helps to reduce the airgap size and improve the torque output further. Besides, the quasi-cylindrical magnet could offer lower rotor eddy lossEddy loss and higher anti-demagnetization capability than conventional radial and eccentricEccentric pole patterns. On the other hand, Spoke-type PM machines have strong flux-focusing effect and hence high average torque; however, they generally suffer from relatively high torque rippleTorque ripple because of the abundant high-order magnetic harmonicHarmonics of the electric machines. The hybrid irregular magnetic pole pattern composed of quasi spoke magnets and surface mounted magnets for high-speed motors is an good candidate for reducing the torque rippleTorque ripple while maintaining high torque for spoke-type PM machine. The quasi-Spoke-type magnets and the surface-mountedSurface-mounted PMs with multi-direction magnetization help to improve average torque greatly. Besides, the surface-mountedSurface-mounted magnets with parallel magnetization are conducive to reducing high-order air-gap magnetic harmonicHarmonics and hence achieving smooth torque output.