Static bifurcation analysis of natural circulation inner evaporative cooling system in wind turbine
文献类型：期刊论文
| 作者 | Wang Hai-Feng1; Li Wang1; Gu Guo-Biao1; Shen Jun2; Teng Qi-Zhi3 |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2016-02-05 |
| 卷号 | 65期号:3 |
| 关键词 | wind power evaporative cooling self-circulation stability |
| 英文摘要 | Wind power is one of the most attractive renewable clean energies under development at present. On a global scale, wind power generation development was very rapid in recent years. As the wind power generation tends to develop toward large-scale and offshore, the traditional cooling methods gradually expose their own shortcomings. As the large wind turbine installation tower is high, and the installation site is dispersed, the installation and maintenance of wind turbine generator are difficult. So, the generator is required to have a small weight and less maintenance. Self-circulation inner evaporative cooling system (SCIECS) has the following advantages: self-circulation without pump, high cooling efficiency, safe and reliable operation, and basically maintain-free, etc. The self-circulation of cooling system can be realized by the 3 degrees-5 degrees between wind turbine generator and the horizontal direction, and it is very suitable for being used in a large-scale wind power generator. Owing to the intrinsic nonlinearity of two-phase self-circulation system, changes of operation condition and circuit topology in a large range may lead to an instability of the cooling system, causing the system parameters to severly change. The instability of the cooling system can cause the local overheating and even burning of the generator, which provides a huge security risk for the cooling system, thus threatening the safe and stable operation of the generator. The stability of SCIECS is very important for the safe operation of wind turbine. In this paper, static stability of the SCIECS in wind power generator is studied based on the nonlinear bifurcation analysis theory and its numerical continuation method. System static bifurcation diagram is obtained to analyze the evolution characteristics of the SCIECS. Parameter effect of the system static bifurcation is analyzed at the same time. In order to verify the theoretical prediction of the static bifurcation of the small-angle two-phase natural circulation, an experimental platform is built. Static bifurcation of the SCIECS is observed experimentally. The experimental results show that the static bifurcation phenomenon exists in the natural circulation two-phase flow of small angle, and the theoretically predicted m-Q bifurcation curves are in good agreement with the experimental curves, which verifies the correctness of the theoretical analysis. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35870]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem & Phys, Beijing 100190, Peoples R China 3.Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Hai-Feng,Li Wang,Gu Guo-Biao,et al. Static bifurcation analysis of natural circulation inner evaporative cooling system in wind turbine[J]. ACTA PHYSICA SINICA,2016,65(3). |
| APA | Wang Hai-Feng,Li Wang,Gu Guo-Biao,Shen Jun,&Teng Qi-Zhi.(2016).Static bifurcation analysis of natural circulation inner evaporative cooling system in wind turbine.ACTA PHYSICA SINICA,65(3). |
| MLA | Wang Hai-Feng,et al."Static bifurcation analysis of natural circulation inner evaporative cooling system in wind turbine".ACTA PHYSICA SINICA 65.3(2016). |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。