盘式永磁涡流驱动器的电磁-温度耦合解析模型  

Electromagnetic-Thermal Analytical Model of Axial-Flux Permanent Magnet Eddy Current Driver

作　　者：郑迪[1] 王大志[1] 于林鑫 李召[1] Zheng Di;Wang Dazhi;Yu Linxin;Li Zhao(School of Information Science and Engineering Northeastern University Shenyang 110819 China)

机构地区：[1]东北大学信息科学与工程学院

出　　处：《电工技术学报》2019年第11期2315-2323,共9页Transactions of China Electrotechnical Society

基　　金：中央高校基本科研业务费专项资金资助项目(N160406001)

摘　　要：提出盘式永磁涡流驱动器的电磁-温度耦合解析模型,用于进行电磁场解析计算和温度场分析。首先,基于分离变量法建立三维电磁场解析模型用于计算磁场分布,推导转矩和涡流损耗表达式。然后,将涡流损耗作为热源,基于等效热网络法建立温度分析计算模型。电磁-温度耦合解析模型的计算是考虑材料电磁和温度特性随温度变化,通过温度迭代过程实现的。最后,利用该文提出的电磁-温度耦合解析模型,分析转矩、涡流损耗、永磁体和铜盘温升随负载的变化,并分析结构参数对转矩的影响。将解析模型结果与有限元和实验结果进行对比,证明解析模型的合理性和正确性。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.

关 键 词：盘式永磁涡流驱动器 转矩 涡流损耗 电磁-温度耦合解析模型 

分 类 号：TM301.4[电气工程—电机]