大型汽轮发电机端部电磁场数值分析  

Numerical calculation of transient eddy current fields and electromagnetic forces acting on end winding of large turbogenerators

作　　者：吴永霞[1] 张甲[1] 梁旭彪 倪光正[1] 黄磊 咸哲龙 杨仕友[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]上海汽轮发电机有限公司,上海200240

出　　处：《机电工程》2012年第3期249-252,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51077114)

摘　　要：为解决大型汽轮发电机在不同运行条件下端部绕组的动力响应问题,基于全变量法,首先建立了汽轮发电机动态性能计算机仿真的等效电路模型和计算方法,以及端部涡流场、电磁力数值分析的三维有限元模型和计算方法;然后应用前述的模型和计算方法,采用有限元分析软件ANSYS,对某台大型汽轮发电机不同运行工况下的端部动态涡流场、电动力进行了数值分析和计算。研究结果表明,该方法在大型汽轮发电机绕组工程设计方面具有一定的指导意义。To solve the force response of end windings of large turbo-generators,a circuit model and method based on full variable methods for transient performance simulations were established, a three dimensional finite element model and method for transient eddy current fields and electromagnetic forces acting on the end windings,of large turbo-generators,were proposed. Numerical results on a prototype large generator using the proposed model and method based on ANSYS commercial software were reported. The experiments results provide guidelines for engineering applications of large turbo-generators.

关 键 词：汽轮发电机 端部涡流场 电磁力 有限元方法 

分 类 号：TM311[电气工程—电机] TM153