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In recently years,the increasing attention has been given to high speed drives for wider range of industrial applications, such as flywheel energy storage, compact micro generation gas turbines, aircraft electrical starter-generator systems and compressors [1].
In recent years, coaxial magnetic gears (CMGs) are particularly attractive for applications desiring high torque density, such as electric vehicles and wind generators [1]. They can offer several advantages like low acoustic noise, maintenance free, and inherent overload protection in comparison with conventional mechanical gears. However, because of the modulation effect by the stationary ring, the...
Permanent magnet (PM) machines possess the merits of high torque density and high efficiency which is very suitable for some applications such as electric vehicles (EVs) [1]-[4]. Over the years, the surface PM and interior PM types, have been extensively studied and developed. The 2004 prius interior PM machine with the advantages of high torque density and wide speed range has been built and applied...
Linear permanent magnet (PM) machines are more and more attractive for direct-drive systems due to the merits of high power density and efficiency. Also, in comparison with the conventional rota-ry-to-linearly drive system, the linear drive system takes the advantages of high reliability and low vibration and noise because of the absence of the linear-to-rotary device. However, for the long stroke...
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