Efficient, safe, and comfortable electric vehicles (EVs) are essential for the creation of a
sustainable transport system. Distributed-driven EVs, which often use in-wheel motors …

The torque ripple of a permanent magnet (PM) machine is mainly due to the cogging torque
and distortions of the back-emf waveforms, winding inductances and current waveforms …

There is a growing demand for high coercivity of NdFeB magnets with low heavy rare earth
in the emerging applications. In this work, dip-coating 0.02 g and 0.09 g TbH 3 on the Tb …

This paper proposes optimal step-skew methods for cogging torque reduction in interior
permanent magnet (IPM) machines. First, a vector diagram method is employed to analyze …

Cogging torque, as one of the main parasitic demerits of permanent magnet brushless
machines, is of particular importance and primary concern during the machine design stage …

A lumped-parameter thermal model is presented for axial flux permanent magnet (AFPM)
machines. The model provides the steady-state thermal solution to derive the temperatures …

This paper focuses on the design and analysis of a novel material-efficient permanent-
magnet (PM) shape for surface-mounted PM (SPM) motors used in automotive actuators …

In this article, a virtual cogging torque (VCT) control method to reduce the speed ripple of
direct-drive permanent magnet synchronous machine servo system under low-speed …

This paper describes the harmonic spectra of the cogging torque of a magnetic gear. The
operating principle of this gear is described, and the transmission torque under operation in …

Magnet segmentation is an effective and simple technique for cogging torque reduction in
high power permanent-magnet (PM) synchronous machines; however, it deteriorates air gap …