Modularity techniques in high performance permanent magnet machines and applications

Abstract

This paper reviews the modularity techniques in the stator manufacture of permanent magnet machines for different applications. Some basic concepts of modular machines are firstly introduced. Modular machines for several typical applications are then described in details, including domestic appliances, automobiles and electric vehicles, more electric aircrafts and civic applications, wind power generators, etc. Besides, the influence of manufacture tolerance gaps and flux barriers on the electromagnetic performance is discussed.

Comparative study on performance characteristics of PM and reluctance machines equipped with overlapping, semi‐overlapping, and non‐overlapping windings

“…Consequently, P pm the level of PMaSnyRMs is quite higher than those of other machine types. Comparison of rated output power P out , expressed in (12) where T e electromagnetic torque and ω r angular speed, for each machine topology is given in Table 4. Moreover, the efficiency η, calculated as expressed in (13), is shown in Fig.…”

“…In the existing literature, several different studies on reviewing/ comparing the electromagnetic performance characteristics of different machine technologies can be found [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Different electric machine topologies have been compared and it is concluded that the PM machines, particularly having IPM topologies, are one of the best rotor topologies suitable for the electric vehicle (EV)/hybrid electric vehicle (HEV) and aerospace applications [5,6].…”

“…The influence of winding structure, magnet shape optimisation, using much cheaper rare-earth magnets; such as ferrite, different rotor topologies, flux barrier geometry optimisation etc. on the performance characteristics have also been investigated [7][8][9][10][11][12][13][14][15][16][17][18][19]. It has also shown that the switched reluctance machines namely DSRMs has also potential to be used in the aerospace applications [20][21][22].…”

Direct reuse strategies of rare earth permanent magnets for PM electrical machines – an overview study

“…However, a common challenge is the complex mechanical support needed for holding each module, no matter it is a joint or a bracket. Nevertheless, [21] had thoroughly reviewed the techniques of modular designs, so there is no need for repeated narrative.…”

Design and analysis of interior permanent magnet machines equipped with novel semi‐overlapping windings

“…Considering the demand for electrification of automotive and aerospace traction systems, improving the machine performance is of great significance in terms of the national economy and efficient use of energy sources. For over a decade, great efforts have been made in research and the performance improvement of the electrical machines [7–38]. Some of these studies have been categorised as follows.…”