有限公式温度场计算技术及其在永磁电机分析中的应用

发布时间：2018-03-02 04:12

本文关键词： 非晶合金永磁电机有限公式法温度场边界条件数值计算技术　出处：《中国电机工程学报》2017年S1期 　论文类型：期刊论文

【摘要】：永磁电机的温升直接关系电机性能指标和经济指标,对电机温度场的准确计算是设计工作中的要点。该文从有限公式法的基本原理出发,研究任意多面体网格下温度场各类边界的有限公式实现方法,建立对流传热边界的高精度有限公式数学模型。针对具有解析精确解的二维基准散热问题,在同一套网格下分别应用原边界模型和高精度改进边界模型计算导热体温升分布,验证改进模型的可靠性和精确性。应用有限公式温度场计算技术,计算一台2.1k W非晶合金永磁电机的三维温度场。以电机温升实验测量值为基准,对比有限公式法、有限元法在同样网格剖分下的计算精度,验证了电机三维温度场有限公式计算技术的可靠性和计算结果的准确性,对非晶合金永磁电机热分析具有一定的参考意义。
[Abstract]:The temperature rise of the permanent magnet motor is directly related to the performance index and economic index of the motor. The accurate calculation of the temperature field of the permanent magnet motor is the key point in the design work. This paper starts from the basic principle of the finite formula method. In this paper, the realization method of finite formula for all kinds of boundary of temperature field under arbitrary polyhedron mesh is studied, and the mathematical model of high precision finite formula for convection heat transfer boundary is established. In the same grid, the original boundary model and the high precision improved boundary model are used to calculate the thermal conduction temperature rise distribution, respectively, to verify the reliability and accuracy of the improved model, and the finite formula temperature field calculation technique is applied to verify the reliability and accuracy of the improved model. The 3-D temperature field of a 2.1kW amorphous alloy permanent magnet motor is calculated. The accuracy of the finite element method is compared with the finite formula method. The reliability and accuracy of the calculation results of the finite formula for 3D temperature field of the motor are verified, which has certain reference significance for the thermal analysis of amorphous alloy permanent magnet motor.
【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;悉尼科技大学工程与信息技术学院;
【基金】：国家重点研发计划(2016YFB0300503) 国家自然科学基金(51677122) 辽宁省教育厅科学研究资助项目(LGD20160006)~~
【分类号】：TM351

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