Design and Analysis of a Spoke Type Motor With Segmented Pushing Permanent Magnet for Concentrating Air-Gap Flux Density
Design and Analysis of a Spoke Type Motor With Segmented Pushing Permanent Magnet for Concentrating Air-Gap Flux Density
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DOI：
10.1109/tmag.2013.2240664
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发表时间：
2013-05
影响因子：
2.1
通讯作者：
M. R. Mohammad;Kyung-tae Kim;J. Hur
中科院分区：
文献类型：
--
作者：
M. R. Mohammad;Kyung-tae Kim;J. Hur
本文提出了一种利用推斥磁铁的新型辐条型永磁无刷直流（BLDC）电机设计。开展了数值分析以计算气隙磁通密度的最大值。首先，建立了辐条型电机的解析模型，并给出了磁标量位的拉普拉斯方程以及一系列边界条件。然后，得到了铁氧体永磁体在气隙中产生的磁场强度和磁通密度的解析表达式。通过求解磁标量位得到了所建立的解析模型。最后，分析了辐条型电机的气隙磁场分布和反电动势。该分析适用于内转子电机拓扑结构以及径向或平行磁化的永磁体。本文通过有限元分析以及辐条型无刷直流电机的实验分析验证了解析模型的结果。
This paper proposes a new design of a SPOKE-type permanent magnet brushless direct current (BLDC) motor by using pushing magnet. A numerical analysis is developed to calculate the maximum value of air-gap flux density. First, the analytical model of the SPOKE-type motor was established, and Laplace equations of magnetic scalar potential and a series of boundary conditions were given. Then, the analytical expressions of magnet field strength and magnet flux density were obtained in the air gap produced by ferrite permanent magnets. The developed analytical model was obtained by solving the magnetic scalar potential. Finally, the air-gap field distribution and back-electromotive force of spoke type machine was analyzed. The analysis works for internal rotor motor topologies, and either radial or parallel magnetized permanent magnets. This paper validates results of the analytical model by finite-element analysis as well as with the experimental analysis for SPOKE-type BLDC motors.