兆瓦级风电机组整机非线性振动机理及传递规律研究

项目名称： 兆瓦级风电机组整机非线性振动机理及传递规律研究

项目编号： No.51305276

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 刘杰

作者单位： 沈阳工业大学

项目金额： 25万元

中文摘要： 风电机组叶片长、机舱质量大，这种结构极易振动，风电机组各子系统的振动不可分地耦合在一起，并最终导致轴承、叶片和塔架等部件的损坏，从而降低整机的可靠性，因此风电机组整机非线性振动机理与传播规律的研究变得十分迫切。本项目结合国内外动力学、仿真与测试技术的最新进展，突破复杂载荷作用下的动力学建模问题，以结构有限元为基础，建立随机风压载荷、应力场、振动场等多因素耦合状态下的风电机组整机模型，在此基础上进行典型工况的仿真研究，运用振动测试和流速、风压传感器等相结合的方法，实现对风电机组整机场参数及振动响应的在线监测，深入研究风电机组整机振动传播规律。本项目将在风电机组整机建模方面取得新的进展，掌握整机非线性振动的机理与传播规律，获得典型工况下机组的振动特征，研究成果直接应用于该类设备的具体设计和故障诊断。

中文关键词： 非线性振动；风力机；齿轮-转子传动系统；有限元；

英文摘要： Wind turbine blades is very long, and cabin quality is very large, which structure is vulnerable to vibration。 Wind turbine subsystem vibration eventually lead to damage to the bearings, blades and tower components, which reduces the reliability of the machinemechanism. So the research of the propagation of nonlinear vibration of the wind turbine machine has become very urgent.The current project will integrate the newly development of dynamics, computing and testing technology to deal with the dynamic modeling under the complex forces and develop the whole model with multi-factor coupling such as wind pressure, stress field, vibration field, the electromagnetic excitement and etc. Based on the FEA of structures. With the combination of the vibration testing technique and the sensor technology of flow rate and wind pressure, the field parameter and vibration response of wind turbine transmission system can be test in-circuit and the whole model can also be test and check. In a further study, a simulation and testing under typical working condition will be done based on the previous work and the vibration transmission of the blade-gear-rotor system will be study. In the current project, a new progress will be made in the modeling of the blade-gear-rotor system and we will acquire the theory and technique of vibr

英文关键词： nonlinear vibration；wind turbine；gear-rotor transmission system；finite element model；