基于耦合场的大型同步发电机定子温度场的数值计算.pdfVIP

25 卷 13 期 中 国 电 机 工 程 学 报 Vol.25 No.13 Jul. 2005 2005 年7 月 Proceedings of the CSEE 2005 Chin.Soc.for Elec.Eng. 文章编号：0258-8013 （2005 ）13-0129-06 中图分类号：TM312 文献标识码：A 学科分类号：470·40 基于耦合场的大型同步发电机定子温度场的 数值计算 1 2 2 李伟力 ，丁树业 ，靳慧勇 1．哈尔滨工业大学，黑龙江省 哈尔滨市 150010； 2．哈尔滨理工大学，黑龙江省 哈尔滨市 150040 ） NUMERICAL CALCULATION OF LARGE SYNCHRONOUS GENERATOR STATOR TEMPERATURE FIELDS BASED ON COUPLED FIELDS 1 2 2 LI Wei-li , DING Shu-ye , JIN Hui-yong （1. Harbin Institute of Technology, Harbin 150001, Heilongji ang Province, China; 2. Harbin University of Science and Technology, Harbin 150040, Heilongji ang Province, China ） ABSTRACT: According to the theory of fluid dynamics, 1 引言 presented the fluid movement differential equation inside stator radial ventilation ducts, the solution region and the edge 无论是水轮发电机，还是汽轮发电机，定子 conditions of 2D fluid fields are given, and the fluid field is 内部风道的存在对电机的散热都具有重要的作 calculated and analysed, fluid field distribution inside radial 用。电机内部热现象的分析和温度场准确计算很 ventilation ducts were compared at the different inlet velocity. 大程度上取决于电机的散热系数 散热介质的温 At the same time, the heat transfer coefficient inside radial 度，而电机通风沟内冷却介质流速的变化是决定散 ventilation ducts were calculated on the basis of computational fluid dynamics (CFD), established mathematical model and 热系数的最重要因素。通常电机通风沟内流体的流 physical model