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Linear planar flux-switching permanent magnet (FSPM) brushless machines have significant potential for transportation application. A 6-slot/5-pole linear FSPM motor is optimized in this paper for maximum thrust force at a fixed copper loss and also for minimum cogging force by finite element (FE) analysis. The influence of major design parameters, such as the split ratio between the mover and stator,...
A low cost 3-phase DC winding excited flux-switching (FS) brushless AC machine is developed from the FS permanent magnet (FSPM) machine. The influence of stator and rotor pole number combination on its electromagnetic performance, including flux-linkage and back-emf waveforms, electromagnetic static torque, and torque-current density characteristics, are predicted by 2-D finite element analyses and...
A novel E-core hybrid excited flux-switching PM (FSPM) brushless machine is proposed based on an E-core FSPM machine which has significantly less magnet and higher torque density than those of a conventional FSPM machine. The proposed machine has a simple structure. The main flux path of DC excitation does not affect the magnet excitation since it is not through the magnets. The combination of the...
The significant influence of slot opening on the optimal stator and rotor pole combination and the electromagnetic performance of the flux-switching PM (FSPM) machine is observed and investigated in this paper. A new FSPM brushless machine with remarkable slot opening relative to the magnet thickness is developed to reduce the magnet usage and increase the slot area. Its stator slot opening is almost...
The performance of the optimized conventional, novel E- and C-core flux-switching permanent magnet (FSPM) machines having different combination of stator and rotor pole numbers is compared by finite element analyses, with particular reference to the conductor and magnet eddy current loss and iron loss. Both iron loss and conductor eddy current loss increase with the rotor pole number, while the 11-...
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