磁力齿轮温度场仿真与试验研究  

Simulation and Test on Thermal Field of Magnetic Gear

作　　者：李建强[1] 黄苏融[1] 曹海东[1] 王凯立[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《电机与控制应用》2010年第7期6-10,共5页Electric machines & control application

基　　金："863"节能与新能源汽车重大项目(2006AA11A168;2008AA11A108)

摘　　要：稀土钕铁硼永磁材料温度系数较高,高温下剩余磁密Br下降,磁力齿轮转矩传递能力降低;同时导致永磁体内禀矫顽力Hci下降,可能造成局部失磁,使磁力齿轮性能严重恶化。因此,对磁力齿轮的设计和运行而言,有必要研究其运行时内部温度场的分布。分析计算轴向磁场调制式磁力齿轮的热源分布情况,建立磁力齿轮三维温度场有限元模型,仿真计算磁力齿轮关键部件内的温度分布,完成样机温升试验验证工作。样机试验数据与有限元结果相吻合,验证了仿真模型的准确性,以及温度对磁力齿轮性能的影响。NdFeB rare earth permanent magnetic materials are characterized with high temperature coefficients and great thermal degradation of magnetization. High temperature results in the significant reduction of the torque and partial loss of the magnetization. That leads to the serious derogation of the gear performance. Therefore,for the design and operation of the magnetic gear,it is necessary to study the internal thermal field of the gear in operation. The heat source distribution was analyzed and calculated for the magnetic gear with axial flux modulation,the three-dimensional finite element model for the thermal field analysis of the magnetic gear was established and the thermal field inside the key parts of the gear was computed by simulation. A conceptual prototype magnetic gear was tested with elevated temperature to verify the correctness of the simulation model and the effect of the temperature elevation on the performance of the magnetic gear.

关 键 词：磁力齿轮 三维温度场 温升试验 

分 类 号：TM303.5[电气工程—电机]