第一作者张磊安男，博士，讲师，1982年7月生

风电叶片两点疲劳加载系统振动耦合特性

张磊安1,2,3，黄雪梅1，姚锦恺1

(1. 山东理工大学机械工程学院，山东淄博255091；2.中国矿业大学机电工程学院，江苏徐州221116；3.连云港中复连众复合材料集团有限公司，江苏连云港222000)

摘要：针对风电叶片单点疲劳加载方法驱动能力不足且试验周期较长的问题，设计一种新型两点疲劳加载测试系统。通过对加载系统进行合理简化，建立风电叶片两点疲劳加载振动系统的机电耦合数学模型。利用Matlab/Simulink软件建立加载系统的仿真模型，对加载系统的机电耦合过程进行仿真，得到不同电动机转速、不同初始相位差对加载系统机电耦合过程的基本影响规律。最后搭建了一套小型风电叶片两点疲劳加载试验系统，得到试验结果与仿真结果规律基本吻合，验证了数学模型和仿真模型的准确性。为后续两点疲劳加载试验的精确控制以及叶片的优化设计提供了理论依据。

关键词：风电叶片；机电耦合；数学模型；数值仿真；疲劳加载试验

基金项目：国家自然科学基金(51405275，51305243)；山东省自然科学基金(ZR2014EL027)；中国博士后科学基金(2015M571840)

收稿日期：2015-01-14修改稿收到日期：2015-04-10

中图分类号:TH113

文献标志码：A

DOI:10.13465/j.cnki.jvs.2015.17.014

Abstract:Aiming at lack of driving capacity and longer test period of a single-point fatigue loading system, a dual-point fatigue loading system for wind turbine blades was designed. By simplifying the loading system rationally, its electromechanical coupling mathematical model was established, and then its simulation model was built with Matlab/Simulink software. By simulating the electromechanical coupling process of the dual-point fatigue loading system, the basic influence laws of different motor speeds and different initial phases on the electro-mechanical coupling process were obtained. Finally, a small dual-point fatigue loading test system for wind turbine blades was set up. The test results agreed well with the simulation ones. The correctness of the mathematical model and simulation model were validated. The study results provided a theoretical basis for the subsequent precise control of dual-point fatigue loading tests and optimal design of blades.

Vibration coupling features for a dual-point fatigue loading system of wind turbine blades

ZHANGLei-an1,2,3,HUANGXue-mei1,YAOJin-kai1(1. School of Mechanical Engineering, Shandong University of Technology, Zibo 255091, China;2. School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China;3. Lianyungang Zhongfu Lianzhong Composite Group Co.,Ltd, Lianyungang 222000, China)

Key words:wind turbine blade; electromechanical coupling; mathematical model; simulation model; fatigue loading test

风力发电是一种高生态效益和经济效益的可再生能源。根据国际能源署《风能技术路线图》报告，到21世纪中叶风力发电占全球电力供应的比例将由目前的2%上升到12%[1]。在风力发电机组中，叶片是接受风能的最主要部件，大量事故和研究结果表明，由于受交变载荷的影响，疲劳破坏是叶片的最主要的失效方式之一[2-4]。……