A Parameterized Linear Magnetic Equivalent Circuit for Air Core Radial Flux Coaxial Magnetic Gears with Halbach Arrays
A Parameterized Linear Magnetic Equivalent Circuit for Air Core Radial Flux Coaxial Magnetic Gears with Halbach Arrays
复制标题
Halbach阵列空芯径向磁通同轴磁齿轮的参数化线性磁等效电路
DOI：
10.1109/ecce.2018.8557915
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
H. Toliyat
中科院分区：
文献类型：
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作者：
M. Gardner;Derek A. Janak;H. Toliyat
本文介绍了一种系统的方法来创建一个2D的线性磁等效电路（MEC）的节点单元的径向磁通同轴磁齿轮与Halbach阵列和无背铁。三个基地的设计是用来验证的准确性的MEC对非线性二维有限元分析的扭矩和气隙磁通密度。基于每个设计的极弧的指导方针，提出了分配内的磁铁和外环的磁铁的节点单元。基于这些准则，进行了广泛的参数研究，以比较MEC和FEA结果。MEC能够非常准确地跟踪设计参数趋势。即使在最差情况下，MEC预测相对粗糙节点单元网格的扭矩在FEA的6.9%内，而更精细网格的扭矩在4.2%内。然而，MEC比FEA快得多。对于较粗的网格，MEC几乎比FEA快两个数量级。因此，这个系统的线性MEC可以是一个有用的工具，用于执行快速初始优化。
This paper describes a systematic way to create a 2D linear magnetic equivalent circuit (MEC) from node cells in a radial flux coaxial magnetic gear with Halbach arrays and without back irons. Three base designs are used to validate the accuracy of the MEC against a nonlinear 2D FEA in terms of torque and air gap flux densities. Guidelines based on each design's pole arcs are presented for distributing the node cells inside the inner ring of magnets and outside the outer ring of magnets. Based on these guidelines, an extensive parametric study is performed to compare the MEC and FEA results. The MEC is able to very accurately track design parameter trends. Even for the worst cases, the MEC predicts a torque within 6.9% of the FEA for a relatively coarse node cell mesh and within 4.2% with a finer mesh. However, the MEC is significantly faster than the FEA. With the coarser mesh, the MEC is almost two orders of magnitude faster than the FEA. Thus, this systematic linear MEC can be a useful tool for performing rapid initial optimizations.