Purpose–Fractional slot permanent magnet (PM) brushless machines having concentrated
non‐overlap** windings have been the subject of research over last few years. They have …

This Second Edition of Mechanical Design and Manufacturing of Electric Motors provides in-
depth knowledge of design methods and developments of electric motors in the context of …

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 …

Various techniques exist for reducing the cogging torque in radial-flux permanent-magnet
(RFPM) machines. However, although some of these can be applied to axial-flux PM (AFPM) …

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 …

A simple analytical technique is proposed to synthesize the cogging-torque waveform of a
permanent-magnet brushless machine from the cogging torque, which is associated with a …

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 …

In order to improve the electromagnetic performance and ease the manufacture process,
particularly stator winding, it is often preferable to employ a modular stator, eg, individual …

This paper presents a multi-slice analytical model for prediction of the open-circuit magnetic
field in slotted semi-closed permanent-magnet axial flux synchronous machines. The …

This paper presents a comparison between three architectures of line-start PM motors for oil-
pump application. This paper is focused on the performances in synchronous operation as …