Analysis of Axial Temperature Variation Effect on the Performance of Five-Phase Permanent Magnet assisted Synchronous Reluctance Motor
Analysis of Axial Temperature Variation Effect on the Performance of Five-Phase Permanent Magnet assisted Synchronous Reluctance Motor
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DOI：
10.1109/ecce44975.2020.9235328
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发表时间：
2020-10
期刊：
影响因子：
--
通讯作者：
Md Nazmul Islam;Seungdeog Choi
中科院分区：
文献类型：
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作者：
Md Nazmul Islam;Seungdeog Choi
研究了五相永磁同步磁阻电动机（PMaSynRM）的磁体轴向温度变化对电机电磁性能的影响。永磁电机的转矩性能、电磁退磁、振动和控制等都与永磁温度的变化密切相关。通常，在机器控制中，估计并使用平均径向磁体温度，而沿轴向方向的温度变化沿着被假定为均匀的。然而，在实践中，磁体轴向温度变化是不均匀的，并且它可以导致不平衡磁化、局部磁体热点、转矩涟漪增加和机器噪声。这些影响在高速和高功率密度的机器中可能更加关键。在这项研究中，非均匀的PM轴向温度分布已估计使用一种新的轴向热模型，采用有限体积法（FVM）。此外，它对机器的性能，特别是反电动势，径向力，和转矩涟漪的影响，已被调查使用的3-D有限元模型。估计和模拟结果已通过创新的无线实验装置进行了验证。
This paper presents the impact of magnet axial temperature variation on the electromagnetic performance of a five-phase permanent magnet assisted synchronous reluctance motor (PMaSynRM). The torque performance, manet demagnetization, vibration, and control of permanent magnet (PM) machines are highly dependent on the PM temperature variation. Commonly, in machine control, an average radial magnet temperature is estimated and used, while the temperature variation along the axial direction is assumed as uniform. However, in practice, the magnet axial temperature variation is not uniform, and it can lead to unbalance magnetization, localized magnet hot-spot, increase in torque ripple, and machine noise. These effects can be even more crucial in the high-speed and high-power density machine. In this study, the non-uniform PM axial temperature distribution has been estimated by using a novel axial thermal model adopting the finite volume method (FVM). Furthermore, its effects on the machine performance, especially back EMF, radial force, and torque ripple, have been investigated using the 3-D FEA model. The estimated and simulated results have been validated by an innovative wireless experimental setup.