2-D Analytical Subdomain Model of a Slotted PMSM With Shielding Cylinder
2-D Analytical Subdomain Model of a Slotted PMSM With Shielding Cylinder
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DOI：
10.1109/tmag.2014.2309325
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发表时间：
2014-03
影响因子：
2.1
通讯作者：
B. Hannon;P. Sergeant;L. Dupré
中科院分区：
文献类型：
--
作者：
B. Hannon;P. Sergeant;L. Dupré
由于其高效率和功率密度，永磁同步电机（PMSM）在高速运行，最近得到了很多关注。高速PMSM的开发需要很好地理解与此类机器操作相关的物理学。此外，在设计高速电机时需要精确的建模工具。本文采用子域建模技术对电机磁场进行了解析计算。这种技术背后的想法是将机器划分为许多子域，其中问题被简化。然后通过施加物理边界条件将不同子域中的解联系起来。所描述的模型立即考虑开槽效应和屏蔽圆柱（SC）的涡流反应场。SC是一个导电套管，它包裹在磁铁周围。其目标是减少高速运行时的转子损耗。本文首先介绍了所应用的建模技术和所研究的机器。其次，讨论了该模型的基础及其发展。最后，将结果与有限元（FE）模型的结果进行了比较。所提出的模型和有限元模型之间的一个非常好的协议进行观察。这意味着，开发的模型确实是一个强大的建模工具，高速永磁同步电机。此外，它还提供了对机器物理学的深刻见解。
Due to their high efficiency and power density, permanent magnet synchronous machines (PMSMs) operating at high speed have recently gained a lot of attention. The development of high-speed PMSMs requires a good understanding of the physics related to the operation of such machines. Moreover, accurate modeling tools are needed when designing high-speed electrical machines. In this paper, the subdomain modeling technique is used to analytically compute the magnetic field of an electrical machine. The idea behind this technique is to divide the machine in a number of subdomains, in which the problem is simplified. The solutions in the different subdomains are then linked by imposing physical boundary conditions. The described model immediately considers the slotting effect and the eddy-current reaction field of a shielding cylinder (SC). The SC is a conductive sleeve, which is wrapped around the magnets. Its goal is to reduce the rotor losses at high-speed operation. This paper starts by introducing the applied modeling technique and the studied machine. Second, the basics of the model and its development are discussed. Finally, the results are compared with results of a finite-element (FE) model. A very good agreement between the proposed model and the FE model is observed. This implies that the developed model is indeed a powerful modeling tool for high-speed PMSMs. Moreover, it provides great insight in the machine's physics as well.