高功率密度笼型异步风力发电机通风结构优化分析  

Ventilation Structure Optimization Analysis of High Power Density Squirrel Cage Induction Wind Power Generator

作　　者：张祯海 迟长春[1] 练正兵 邵士良[1] 

机构地区：[1]上海电机学院电气学院,上海200240

出　　处：《电机与控制应用》2015年第4期53-57,69,共6页Electric machines & control application

摘　　要：针对电机内的通风冷却系统,以一台2.5 MW高功率密度笼型异步风力发电机为例,基于流体力学基本理论,研究了电机内的通风系统和流体的流动原理,对电机的通风结构进行流体场仿真计算。对电机使用的通风结构进行优化,改变电机转子轴向通风道的数量,通过对不同方案的对比分析,最终得出了电机内流量和流速均匀分配的最优方案,限制了电机的温升,提高了电机运行的可靠性。Aiming at the ventilation and cooling system, taking a high power density squirrel cage induction 2 . 5 MW wind power generator as an example, the theory of ventilation system and the fluid flow inside the generator was studied and the ventilation structure was calculated in fluid field based on the theory of fluid dynamics. The ventilation structure was optimized by changing the number of rotor axial ducts. The optimal project that the flow and the fluid speed distributed uniformly was reached by comparing and analyzing different optimum proposals. The temperature rise of the generator was limited preferably and the operational reliability of the generator was improved.

关 键 词：笼型异步风力发电机 通风冷却 高功率密度 流体场 轴向通风道 

分 类 号：TM315[电气工程—电机]