永磁-感应子式混合励磁发电机三维暂态温度场的计算与分析  

Computation and Analysis of 3D-Transient Temperature Field for a Permanent Magnet-Induction Hybrid Excitation Generator

作　　者：付兴贺[1] 林明耀[1] 徐妲[1] 房淑华[1] 

机构地区：[1]东南大学电气工程学院伺服控制技术教育部工程研究中心,南京210096

出　　处：《电工技术学报》2013年第3期107-113,共7页Transactions of China Electrotechnical Society

基　　金：教育部博士点基金(20120092120052);江苏省自然科学基金(BK2010197);常州市科技支撑计划(CE20110024)资助项目

摘　　要：根据传热学理论,建立了永磁-感应子式混合励磁发电机电磁稳态条件下三维暂态温度场求解模型;给出了基本假设及相应的边界条件,确定了电机各部分的导热系数及表面散热系数;根据电磁场计算,得出了电机定子铁心损耗、绕组铜耗、转子涡流损耗及机械损耗等热源的分布;采用有限元法对电机三维暂态温度场进行了计算,分析了励磁电流、电机转速及负载类型对电机温度场的影响。通过样机实验对温度场的计算结果进行验证。The model of 3D transient temperature field for a permanent magnet-induction hybrid excitation generator（PM-IHEG） in the state of steady electromagnetic field is established. Some hypothetical conditions and boundary conditions of the solved region are presented. Lots of coefficients of thermal conductivity and surface heat transfer are given. Stator iron losses, windings copper losses, rotor eddy current loss and mechanical losses are calculated according to the electromagnetic field analysis. The temperature field of PM-IHEG is calculated using 3D FEM. The influences of the exciting current, speed and load on the temperature field are also analyzed by means of numerical method. The calculation and practical measurements results are in satisfactory agreement.

关 键 词：混合励磁 温度场 电磁场 损耗 

分 类 号：TM351[电气工程—电机]