一种考虑硅钢片旋转损耗的三相变压器铁心损耗简化计算方法  

A Simplified Calculation Method of Core Losses Considering Rotating Losses of Electrical Steel Sheets in Three-phase Transformers

作　　者：张艳丽[1] 刘洋[2] 谢德馨[1] 白保东[1] 宋承志[3] 张伟[4] 

机构地区：[1]沈阳工业大学电气工程学院,辽宁省沈阳市110870 [2]保定天威集团公司,河北省保定市071056 [3]特变电工沈阳变压器集团有限公司,辽宁省沈阳市110144 [4]宝山钢铁股份公司,上海市宝山区201900

出　　处：《中国电机工程学报》2013年第18期126-131,6,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50807039;51277122);霍英东教育基金会青年教师基金(121059);高等学校博士学科点专项科研基金资助项目(20102102120002)~~

摘　　要：为了提高电工钢片旋转损耗的计算效率,该文提出一种简化有限元计算过程的变压器铁心旋转损耗计算方法。该方法以单片电工钢片旋转损耗的测量结果为输入数据,在有限元计算过程中,用两条正交的B-H磁化曲线模拟晶粒电工钢片的各向异性,利用牛顿–拉夫逊法求解非线性有限元方程;再依据各离散单元磁通密度的计算结果查找相应的旋转损耗测量曲线,得到铁心损耗分布。通过对比变压器铁心模型的仿真结果和实验测试结果,验证了该方法的有效性。In order to improve the computation efficiency of rotating losses of electric steel sheet,a method calculating transformer iron core losses which can make the process of finite element analysis simplified was proposed in this paper.In this method,the measurement results of rotating loss of single electric steel sheet were the input data.During the course of the finite element computation,two orthogonal B-H curves were used to take the magnetic anisotropic property of grain-oriented silicon steel into account,and the Newton-Raphson method was employed to solve the nonlinear finite element equation.Then,the core loss distribution was obtained by checking the corresponding rotating loss measurement curves according to the magnetic flux density value in each discretization element.By comparing the simulation results with experimental test ones for a transformer core model,the effectiveness of the proposed method is testified.

关 键 词：变压器铁心 旋转磁化 有限元 B-H曲线 牛顿–拉夫逊法 

分 类 号：TM41[电气工程—电器]