A High-Torque Magnetless Axial-Flux Doubly Salient Machine for In-Wheel Direct Drive Applications
A High-Torque Magnetless Axial-Flux Doubly Salient Machine for In-Wheel Direct Drive Applications
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DOI：
10.1109/tmag.2014.2326682
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发表时间：
2014-12
影响因子：
2.1
通讯作者：
Christopher H. T. Lee;K. Chau;Chunhua Liu;T. Ching;Fuhua Li
中科院分区：
文献类型：
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作者：
Christopher H. T. Lee;K. Chau;Chunhua Liu;T. Ching;Fuhua Li
本文在轴向磁通双凸极（AF-DS）电机中引入了直流励磁的概念，创造了一种新型的无磁AF-DSDC电机。在外加励磁的情况下，电机不仅可以提高转矩密度，而且具有大转速范围运行的弱磁能力。由于这些特点，AF-DSDC有利于轮内直接驱动的应用。特别是，根据典型乘用电动汽车的要求，对所提出的机器进行了设计和比较。为了更好地说明这一点，还在公平的环境下设计了径向磁通DSDC机。采用二维和三维有限元方法对两种机械的相应性能进行了分析。
In this paper, the concept of dc-field excitation is newly incorporated into the axial-flux doubly salient (AF-DS) machine, leading to create the new magnetless AF-DSDC machine. With the external field excitation, the proposed machine not only can enjoy its improved torque density, but also the flux-weakening capability for the wide-speed range operation. With these characteristics, the AF-DSDC is favorable for the in-wheel direct drive application. In particular, the proposed machine is designed and compared based on the requirement of a typical passenger electric vehicle. To have a better illustration, a radial-flux DSDC machine is also designed under the fair environment. The corresponding performances of both machines are analyzed by using the 2-D and 3-D finite element method.