高功率密度永磁同步电机永磁体涡流损耗分布规律及其影响

发布时间：2018-05-11 14:12

本文选题：D有限元 + 永磁体涡流损耗分布　；参考：《电工技术学报》2015年06期

【摘要】：永磁体涡流损耗是高功率密度永磁同步电机热退磁的主要原因之一,对永磁同步电机安全、可靠运行非常重要。本文结合理论分析,使用三维有限元法对永磁体涡流损耗的产生因素及分布特性进行分析。运用涡流密度线的概念及模型,使得永磁体涡流损耗的分布更易于理解。通过将得到的永磁体涡流损耗分块平均分布数据和永磁体涡流损耗整块平均分布数据分别代入三维温度场中进行计算,并与温升实验数据进行对比分析,证明了本文得到的永磁体涡流损耗分布对准确计算永磁体局部温升最热点非常重要。为了适用于工程计算,研究了永磁体涡流损耗各个方向的分布特点对温升分布的影响,并总结出快速、简单且较为准确的永磁体局部最热点计算方法。
[Abstract]:Eddy current loss of permanent magnet is one of the main reasons for thermal demagnetization of high power density permanent magnet synchronous motor (PMSM). It is very important for PMSM to operate safely and reliably. In this paper, based on the theoretical analysis, three dimensional finite element method is used to analyze the producing factors and distribution characteristics of eddy current loss of permanent magnets. Using the concept and model of eddy current density line, the distribution of eddy current loss of permanent magnet is easier to understand. The data of eddy current loss of permanent magnet and the data of whole block distribution of eddy current loss of permanent magnet are respectively substituted into three dimensional temperature field, and compared with the experimental data of temperature rise. It is proved that the eddy current loss distribution obtained in this paper is very important for the accurate calculation of the local temperature rise of permanent magnets. In order to be suitable for engineering calculation, the influence of the distribution characteristics of eddy current loss on the temperature rise distribution of permanent magnet is studied, and a fast, simple and accurate method for calculating the local hot spot of permanent magnet is summarized.
【作者单位】：沈阳工业大学国家稀土永磁电机工程技术研究中心;
【基金】：国家科技支撑计划(2013BAE08B00) 国家自然科学基金(51307111) 辽宁省教育厅科学技术研究(L2013049)资助项目
【分类号】：TM341

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