Electromagnetic design and performance evaluation on 75 kW axially laminated flux switching permanent magnet machine

One 75 kW axially laminated flux switching permanent magnet machine (ALFSPMM) with 12/14 (stator/rotor) poles is proposed in this paper. For the stator lamination in parallel with the direction of permanent magnet flux linkage, it can make full use of permanent magnet and reduce relevant flux leakage and iron loss especially in high speed applications. Because of partly serious saturation and nonlinear trait of inductance, optimal electromagnetic design has been done to decrease the cogging torque and part saturation of flux density distributed in the tip or edge of stator tooth and rotor pole. Theoretical investigation on ALFSPMM is confirmed by plentiful simulations mainly based on two-dimensional model analyzed by finite element algorithm on the platform of commercial software Ansoft Maxwell 12. Compared with the traditional flux switching permanent magnet machine (FSPMM), ALFSPMM has stronger torque density, greater flux weakening ability, and higher efficiency. It can be regarded as one ideal candidate for the drive system of plug-in hybrid electrical vehicle (PHEV).

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