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首页> 外文期刊>IEEE Transactions on Magnetics >Analysis of Vibration and Performance Considering Demagnetization Phenomenon of the Interior Permanent Magnet Motor
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Analysis of Vibration and Performance Considering Demagnetization Phenomenon of the Interior Permanent Magnet Motor

机译：考虑室内永磁电动机退磁现象的振动与性能分析

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摘要

This paper discusses a motor that was designed to satisfy the size constraints of system by using ferrite magnet and has the same performance as rare-earth magnet motor. In general, the size of the motor is increased in order to meet the same performance of motor using a ferrite magnet, because of its very low energy density compared to the rare-earth magnet. In order to compensate for these drawbacks, spoke structures capable of generating maximum magnetic flux at the same rotor size have been frequently studied. However, the spoke type motor structure has a drawback that demagnetization occurs in a magnet-specific portion. However, because it affects harmonics of the airgap flux density by demagnetization, it affects mechanical torque ripple and vibration. Therefore, in this paper, the changed air-gap flux density due to the demagnetization phenomenon and the changed mechanical vibration are analyzed by the finite-element method. In addition, we proposed an optimal rotor structure that can reduce the demagnetization phenomenon of magnets in spoke interior permanent magnet synchronous motor. Experiments were performed to evaluate the reliability of the optimized design.
机译：本文讨论了一种设计用于通过使用铁氧体磁体来满足系统尺寸限制并且具有与稀土磁体电动机相同的性能的电动机。通常，由于与稀土磁体相比能量密度非常低，因此为了满足使用铁氧体磁体的电动机的相同性能而增加了电动机的尺寸。为了补偿这些缺点，已经经常研究能够在相同转子尺寸下产生最大磁通量的轮辐结构。然而，辐条型电动机结构具有在磁体特定部分中发生退磁的缺点。但是，由于它会因退磁而影响气隙通量密度的谐波，因此会影响机械转矩波动和振动。因此，本文利用有限元方法分析了由于退磁现象而引起的气隙磁通密度变化以及机械振动的变化。另外，我们提出了一种可以减少辐条内装永磁同步电动机中磁体的退磁现象的最佳转子结构。进行实验以评估优化设计的可靠性。

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