自力风扇性构件诱发的电机内流型演变特性研究  

Studies on Flow Patter Evolution Characteristics by Self-support Fan Components Inside Generator

作　　者：王影 丁树业[1] 杨智[2] 朱敏[1] 李镇江 李政辉 Wang Ying;Ding Shuye;Yang Zhi;Zhu Min;Li Zhenjiang;Li Zhenghui(School of NARI Electrical and Automation,Nanjing Normal University,Nanjing 210023,China;704 Research Institute,China Shipbuilding Industry Group Co.,Ltd.,Shanghai 200031,China)

机构地区：[1]南京师范大学南瑞电气与自动化工程学院,江苏南京210023 [2]中国船舶重工集团公司第七〇四研究所,上海200031

出　　处：《南京师范大学学报（工程技术版）》2020年第2期31-38,共8页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：国家自然科学基金项目(51977112);江苏省自然科学基金项目(BK20191370);江苏省青蓝工程项目(2019)。

摘　　要：大型电机内流体流动及温度分布与自力风扇性构件的结构性能密切相关,建立考虑具有自力风扇性构件性能的径向通风槽钢动态效应的电机内流场理论分析模型,并对其内部流场流型演变特性进行研究是电机领域的迫切需求.以一台6.5 MW双馈水轮发电机为例,利用流体场基本理论及数值研究方法,建立三维非定常紊流流场求解模型,并通过有限体积法,分析转速及转子径向通风槽钢的结构形态对电机内流场流变特性的作用以及影响程度,进而探究转子径向通风槽钢作用下的电机内流体场流型演变规律,为电机径向通风槽钢的结构设计及通风性能优化提供借鉴.The fluid flow and temperature distribution of large generators are heavily related to the structure of components with the performance of self-support fan.Therefore,it is an urgent need to study the evolution characteristics of the internal fluid field by building the theoretical analysis model,which considers the dynamic effect of the radial ventilation channel steels with the performance of self-support fan component.Firstly,in this paper,a 6.5 MW doubly-fed hydro-generator(DFIG)is taken as an example for studying.By using the numerical research method of the fluid field and establishing the model of the three-dimensional unsteady turbulent fluid field,the effects and influence level of factors such as the rotational speed and the structure of the rotor radial ventilation channel steel on the rheological property of the fluid field are analyzed.Then,the evolution law of fluid field in the generator under the action of the rotor radial ventilation channel steels with self-support fan characteristics is studied,which provides a reference for the structural design and ventilation performance optimization.

关 键 词：自力风扇 流体场 流型演变 结构性能 数值分析 

分 类 号：TM312[电气工程—电机]