An analytical complementary FEA tool for optimizing of axial-flux permanent-magnet machines
An analytical complementary FEA tool for optimizing of axial-flux permanent-magnet machines
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DOI：
10.3233/jae-2011-1375
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发表时间：
2011
影响因子：
0.6
通讯作者：
A. Mahmoudi;N. Rahim;W. Hew
中科院分区：
文献类型：
--
作者：
A. Mahmoudi;N. Rahim;W. Hew
本文提出了一种计算开槽轴向磁通永磁电机磁场的解析方法。该方法是建立在一个简单的非线性磁分析的等效磁路饱和可能的磁阻核心在开槽轴向磁通永磁电机。计算各种工况下的磁通分布和转矩特性。其准确性和有效性通过与有限元分析模型相匹配的结果进行了验证。该方法可作为有限元分析的补充设计工具，特别是在加速电机的设计优化方面。该方法与有限元分析一样精确，但由于其计算时间更短而优于有限元分析，使其成为初始估计的更好选择。分析验证后，灵敏度的设计变量，通过使用所提出的模型。通过所提出的磁路进行灵敏度分析，为设计参数的选择提供了一种有效的方法。通过多目标优化设计迭代调整这些参数，以获得最大的输出转矩和效率。仿真结果表明，AFPM电机效率受其直径的影响最大，其次是磁铁分数，最小的背铁厚度。
This paper presents an analytical approach to calculate the magnetic field in a slotted axial-flux permanent-magnet machine. The method is modeled on a simple nonlinear magnetic analysis of an equivalent magnetic circuit with a saturationpossible magnetic-reluctance core in a slotted axial-flux permanent-magnet machine. It calculates flux distribution and torque characteristic in various operating conditions. Its accuracy and validity are verified by results that match those of a Finite Element Analysis model. This method serves as a complementary design tool to FEA especially in expediting design optimization of an electrical machine. The method is as accurate as FEA but betters FEA with its shorter computation time, making it the better alternative in initial estimations. After verification of the analysis, sensitivity to design variables by using the proposed model is presented. The sensitivity analysis through the proposed magnetic circuit of the AFPM machine provides an effective way for selection of design parameters. These parameters are iteratively adjusted through multi-objective optimal design in order to obtain maximum output torque and efficiency. Simulation results show AFPM machine efficiency to be affected the most by its diameter, followed by magnet fraction, and the least by back-iron thickness.