Abstract：A novel electromagnetic-thermal analytical model is presented to calculate electromagnetic field analytically and analyze the temperature field. The 3-D magnetic field analytical model is established in cylindrical coordinate to calculate the magnetic field distribution, then torque and eddy current loss can be obtained. Furthermore, with the help of the equivalent thermal resistance network method, a thermal model is established by taking the eddy current loss as the heat source, which is the eddy current loss of copper. The electromagnetic-thermal analytical model calculation is realized through the temperature iteration process, taking the change of material electromagnetic and thermal characteristics under temperature into consideration. With the help of the electromagnetic-thermal model, the influence of various loads on torque, eddy current loss, permanent magnet and copper temperature rise is analyzed under the whole working range. And the relationship between the torque and geometrical parameters is analyzed. The analytical predicted results are compared with the results of finite element method (FEM) and measurement. The comparison results confirm the validity of the electromagnetic-thermal analytical model.
郑迪, 王大志, 于林鑫, 李召. 盘式永磁涡流驱动器的电磁-温度耦合解析模型[J]. 电工技术学报, 2019, 34(11): 2315-2323.
Zheng Di, Wang Dazhi, Yu Linxin, Li Zhao. Electromagnetic-Thermal Analytical Model of Axial-Flux Permanent Magnet Eddy Current Driver. Transactions of China Electrotechnical Society, 2019, 34(11): 2315-2323.
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2019, Vol. 34 
