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The brushless doubly-fed generator (BDFG) has the advantages of brushless structure, variable-speed constant-frequency operation, flexibly controllable active and reactive powers, low converter capacity and cost, and so on, which is very suitable for the wind power generation, especially the large wind turbines and offshore wind farm [1].
Nowadays, with the increasing concerns on global environment pollution and energy security, electric vehicles (EVs) have been regarded as the potential to offer a solution for transportation [1].
Contra-rotating double-rotor disc-type PM motor is suitable to directly drive contra-rotating propeller of torpedo, due to avoid yawing and spinning. In this paper, the electromagnetic design scheme for different pole numbers are compared, and design method of permanent magnet size and stator winding are searched, then the effect of magnetic isolation material used in stator is analyzed. Finally,...
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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