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首页> 外文期刊>IEEE Transactions on Magnetics >Axial Unbalanced Magnetic Force in a Permanent Magnet Motor Due to a Skewed Magnet and Rotor Eccentricities
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Axial Unbalanced Magnetic Force in a Permanent Magnet Motor Due to a Skewed Magnet and Rotor Eccentricities

机译：倾斜磁铁和转子偏心引起的永磁电动机的轴向不平衡磁力

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摘要

We investigate the effect of a skewed permanent magnet (PM) with overhang on the axial unbalanced magnetic force (UMF) of a PM motor, especially in the presence of static and dynamic eccentricities of a rotor. We derive the mathematical equations of the axial UMF acting on PM motor due to the skewed PM with overhang and rotor eccentricities. We develop a 3-D finite-element model of the PM motor, not only to verify the frequency components of the proposed equations but also to determine the amplitude of the axial UMF. Further, we develop an experimental setup to measure the axial UMF caused by a skewed PM with overhang and rotor eccentricities. We confirm that the skewed PM with overhang generates an axial UMF with the harmonic of the least common multiple of pole and slot numbers. In addition, the static and dynamic eccentricities with the interaction of the skewed PM and overhang generate the axial UMF with the pole harmonics and slot harmonics, respectively.
机译：我们研究了带有偏斜的永磁体（PM）在PM电动机的轴向不平衡磁力（UMF）上的影响，尤其是在存在转子的静态和动态偏心率的情况下。我们推导了由于带有悬伸和转子偏心的偏心PM而导致轴向UMF作用于PM电动机的数学方程。我们开发了PM电动机的3-D有限元模型，不仅可以验证所提出方程的频率分量，还可以确定轴向UMF的振幅。此外，我们开发了一个实验装置来测量由偏心PM悬伸和转子偏心引起的轴向UMF。我们确认带有偏角的偏斜PM产生了一个轴向UMF，其谐波为极数和槽数的最小公倍数。此外，偏心PM和悬垂相互作用的静态和动态偏心分别产生带有极谐波和槽谐波的轴向UMF。

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