摘要
根据电磁感应定律得到计算定子屏蔽套损耗二维涡流场有限元表达式,建立了工程涡流场的数学模型,采用有限元方法并结合端电压收敛条件对定子屏蔽套内的涡流损耗进行计算分析.通过与传统解析算法所得结果及有关实验数据进行比较,验证了有限元方法在计算损耗中的准确性.利用所得方法,对采用不同尺寸和不同材料时的屏蔽套损耗进行了计算分析,从而得出损耗随屏蔽套尺寸与材料特性变化的规律.同时,计算了定子屏蔽套尺寸改变时电机性能变化,研究涡流损耗对电机性能的影响,找出其间规律.所得计算方法和规律可对屏蔽电机的设计与制造以及整机的优化设计起到作用.
The two-dimensional eddy field finite element function for the loss calculation in stator can was obtained based on the electromagnetic induction law, and the mathematical models of the eddy field were established. Using the finite element method and terminal voltage convergence, the eddy loss of the stator can was calculated. Then, the results were compared with that from traditional analytical formula and the experimental data, and the accuracy of FEM in calculating loss was proved. Using the same method the eddy losses of canned motors with different size and different materials cans were calculated, and the variation of the losses with these parameters was found. At the same time, the performances of canned motors with different can were calculated, and the influence of eddy loss on them was studied, thus the variation regular patterns were found. The obtained calculation method and law can be helpful to eddy current loss calculation, optimum design and manufacture of canned motor.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第9期1422-1426,共5页
Journal of Harbin Institute of Technology
关键词
涡流场
有限元
屏蔽电机
涡流损耗
性能
eddy field
finite element method
canned motor
eddy loss
performance
