Please wait a minute...
工程设计学报
Chinese Journal of Engineering Design  2015, Vol. 22 Issue (5): 425-430    DOI: 10.3785/j.issn. 1006-754X.2015.05.004
    
Gear reliability analysis of 2.5 MW wind turbine gearboxbased on Copula function
CHEN Wen-hua1, ZHENG Chao-peng1, LI Qi-zhi1, PAN Jun1, HE Qing-chuan1, PAN Xiao-dong2
1. Key Laboratory of Reliability Technology for Mechanical and Electrical Product of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China;
2. Hangzhou Advance Gearbox Group Co., Ltd., Hangzhou 311203, China
Download: HTML     PDF(2241KB)
Export: BibTeX | EndNote (RIS)      

Abstract  In order to research gear reliability of 2.5 MW wind turbine gearbox considering relativity of contact fatigue and bending fatigue, based on the many years monitoring data of experiment wind load, the Load Duration Distribution (LDD) was determined with the Rain-flow Method. The transmission system model of 2.5 MW wind turbine was obtained based on Romax Designer software. Contact stress and bending stress were calculated by taking LDD into the transmission system model. So the distribution of contact and bending stress were determined with statistic method. Based on the Copula function the gear reliability calculation model which took the correlation of contact and bending fatigue into consideration was determined under the dependency between contact fatigue and bending fatigue with the use of stress-strength interference model. Stress and fatigue strength sampling was generated by Monte Carlo sampling method. Copula function parameter was estimated by Residual Square Sum (RSS) and optimized by MATLAB toolbox. Then each gear fatigue reliability was calculated. It provides the theoretical basis to improve the reliability of 2.5 MW wind turbine gearbox.

Key words： wind turbine gearbox      fatigue reliability      load spectrum      Copula function     
Received: 09 June 2015      Published: 28 October 2015
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:

CHEN Wen-hua, ZHENG Chao-peng, LI Qi-zhi, PAN Jun, HE Qing-chuan, PAN Xiao-dong. Gear reliability analysis of 2.5 MW wind turbine gearboxbased on Copula function. Chinese Journal of Engineering Design, 2015, 22(5): 425-430.

URL:

https://www.zjujournals.com/gcsjxb/10.3785/j.issn. 1006-754X.2015.05.004     OR     https://www.zjujournals.com/gcsjxb/Y2015/V22/I5/425


基于Copula函数的2.5 MW风电齿轮箱齿轮可靠性分析

针对2.5 MW风电齿轮箱齿轮可靠性分析时，需考虑其接触疲劳和弯曲疲劳失效的相关性问题，根据风场长年监测数据，利用雨流计数法得到了其载荷谱，利用Romax Designer软件建立了2.5 MW风电齿轮箱的传动系统模型；利用其齿轮部件分析模块计算并统计得到了各齿轮的接触应力与弯曲应力分布；应用应力—强度干涉模型并基于Copula函数建立了考虑接触疲劳和弯曲疲劳相关性的齿轮疲劳可靠性计算模型；应用蒙特卡罗法对应力和疲劳强度抽样，并利用离差平方和最小值原理和MATLAB优化工具箱估计了Copula函数的参数，并计算出各齿轮的疲劳可靠度.研究结果为改进2.5 MW风电齿轮箱设计、提高其可靠性提供理论依据.

关键词： 风电齿轮箱,  疲劳可靠性,  载荷谱,  Copula函数 
[1] CHEN Zhen, LI Tao, XUE Xiao-wei, ZHOU Yang, JING Shuang, CHEN Yan. Fatigue reliability analysis and optimization of vibroseis vibrator baseplate based on fuzzy comprehensive evaluation method[J]. Chinese Journal of Engineering Design, 2021, 28(4): 415-425.
[2] LIU Shu-qin, LIU Ruo-chen, SUN Jian-zhong, ZHANG Jin-wu. Research on on-line electrostatic monitoring method for wear state of wind turbine gearbox[J]. Chinese Journal of Engineering Design, 2021, 28(2): 163-169.
[3] TANG Liang, HE Ren-jie, GONG Fa-yun, LI Fei-yang, LIU Guan-jun, YANG Min. Internal excitation law research and dynamic characteristic optimization of wind turbine gearbox under varying wind load[J]. Chinese Journal of Engineering Design, 2020, 27(2): 212-222.
[4] LU Feng-yi, WANG Shuang, XU Ge-ning, QI Qi-song. Improved modeling method for prediction model of crane load spectrum based on support vector regression machine[J]. Chinese Journal of Engineering Design, 2015, 22(5): 412-419.
[5] WU Ying, XIE Li-Yang. Prediction on probability distribution of fatigue life under spectrum loading[J]. Chinese Journal of Engineering Design, 2010, 17(6): 435-438.