Design and Analysis of a Magnetless Double-Rotor Flux Switching Motor for Low Cost Application
Design and Analysis of a Magnetless Double-Rotor Flux Switching Motor for Low Cost Application
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DOI：
10.1109/tmag.2014.2329764
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发表时间：
2014-12
影响因子：
2.1
通讯作者：
Chuang Yu;S. Niu;S. Ho;W. Fu
中科院分区：
文献类型：
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作者：
Chuang Yu;S. Niu;S. Ho;W. Fu
提出了一种适用于低成本冷却风扇的新型无磁双转子磁通开关电机。通过创造性地将集中环形绕组引入双转子中间定子结构，该电机不仅实现了磁通切换功能，而且缩短了端部绕组，提高了运行效率。为了获得更好的性能，电机的尺寸，特别是定子和转子的极弧进行了优化。同时，由于引入了阶梯气隙，提高了转子任何位置的扭矩，成功地避免了启动时输出扭矩为零的问题。对最终优化后的电机进行了有限元分析，仿真结果验证了其有效性。
This paper presents a novel magnetless double-rotor flux switching motor for low cost cooling fan application. By creatively incorporating concentrated toroidal windings into a double-rotor middle-stator structure, the proposed motor not only realizes the flux switching feature, but also shortens the end-windings to improve its operational efficiency. To achieve a better performance, the motor dimensions, especially the stator and rotor pole arcs, are optimized. Meanwhile, with the introduction of a stepped air-gap, the torque at any rotor position is boosted and problems with zero output torque at starting is successfully avoided. The final optimized motor is analyzed using finite element method, and its validity is confirmed by the simulation results.