风力发电机自循环蒸发内冷系统的静态分岔分析  

Static bifurcation analysis on natural circulation inner evaporative cooling system in wind turbines

作　　者：李旺[1] 王海峰[1] 顾国彪[1] 

机构地区：[1]中国科学院电工研究所,北京100190

出　　处：《电工电能新技术》2015年第4期6-11,共6页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金资助项目(51177157)

摘　　要：风自循环蒸发内冷系统具有无泵自循环、冷却效率高、运行安全可靠、基本免维护等特点,非常适合在风力发电机中应用。蒸发内冷系统的稳定性对风力发电机的安全运行十分重要,而目前尚没有针对该系统稳定性的非线性分析。本文基于非线性分岔理论及其DERPAR数值计算方法,对应用于风力发电机的自循环蒸发内冷系统的静态稳定性进行了深入研究,首次获得了该系统的两相自然循环静态分岔图,并且分析了系统非线性的本质。最后,针对风力发电机这一特殊应用场合,对系统进行了参数效应研究,为系统的优化设计和安全运行提供理论参考。Self-circulation inner evaporative cooling system （SCIECS） has the following advantages： self-circula- tion without pump, high cooling efficiency, safe and reliable operation, and basically maintain free, etc. It is very suitable for application in the field of wind power. The stability of SCIECS is very important to the safe operation of wind turbines. So far, there is no nonlinear analysis on the stability of SCIECS. In this paper, based on the nonlin- ear bifurcation analysis theory and its DERPAR numerical computation method, static stability of the SCIECS in wind turbines is deeply studied. The authors acquired the static bifurcation diagram and analyzed the nonlinearity nature of SCIECS. At last, in allusion to the special applications in wind turbine, parametric effect of SCIECS is studied, providing theoretical reference for the optimal design and safe operation of SCIECS.

关 键 词：风力发电 蒸发内冷 两相自然循环 静态分岔 参数效应 

分 类 号：TM315[电气工程—电机]