Design and Analysis of a New Fault-Tolerant Linear Permanent-Magnet Motor for Maglev Transportation Applications
Design and Analysis of a New Fault-Tolerant Linear Permanent-Magnet Motor for Maglev Transportation Applications
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DOI：
10.1109/tasc.2012.2185209
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发表时间：
2012-03
影响因子：
1.8
通讯作者：
Wenxiang Zhao;M. Cheng;J. Ji;R. Cao;Yi Du-;Fuhua Li
中科院分区：
文献类型：
--
作者：
Wenxiang Zhao;M. Cheng;J. Ji;R. Cao;Yi Du-;Fuhua Li
提出了一种新型容错直线永磁电机--容错初级永磁电机。该电机具有高功率密度、高效率、高容错性和低成本的特点，适合于磁浮交通应用。列车的转向器上都安装了永磁电机和绕组，而唯一的铁定子固定在全线两条钢轨之间。同时，新的电机拓扑引入了容错齿(FTT)的概念，以提供所需的相间解耦。分析了电磁场分布、电感、反电动势和推力等电磁特性。此外，通过采用辅助动齿，提出了两种减小端部效应的方法。此外，还对短路电流进行了解析推导和预测。为了验证，给出了有限元分析和暂态联合仿真结果。
This paper proposes a new fault-tolerant linear permanent-magnet (PM) motor, termed as fault-tolerant primary PM (FT-PPM) motor. The proposed motor offers high power density, high efficiency, high fault tolerance and low cost, suitable for maglev transportation applications. Both PMs and windings are set at the steering device of the train, while the only iron stator is fixed between two rails along the whole line. Meanwhile, the new motor topology incorporates the concept of fault-tolerant teeth (FTT) to provide the desired decoupling among phases. The electromagnetic performances are analyzed such as field distributions, inductances, back-EMFs and thrust force. Moreover, by adopting assistant mover teeth, two methods are proposed to reduce the end-effect. Furthermore, the short-circuit current is analytically derived and predicted. The finite-element analysis (FEA) and transient co-simulated results are given for verification.