风电偏航衬垫降噪声方法探究

Discussion on Noise Reduction Method of Wind Power Yaw Brake Friction pad

风电风机偏航运行时产生的噪声问题已成为行业难题,此现象多出现在偏航制动器功能运行上。本文主要从原材料角度探究如何改进优化风机偏航制动器用摩擦衬垫,来降低运行噪声。此新材料优化方向是在以往摩擦衬垫阻尼材料、润滑辅助材料基本混合的基础上,通过调和改性或多改性黏结树脂并添加数种辅助材料,来达成一种属性更为特殊的复合摩擦结构材料。当使用这种材料制作而成的制动器摩擦衬垫在摩擦滑行时,与摩擦对偶盘产生的机械振动频率不再轻易匹配于风机耦合系统运行时产生的的激振频率,那么偏航制动器工作时就不会轻易与风机耦合系统工作时产生的振动频率发生共振而产生机械噪声。

The noise problem caused by the yaw operation of wind turbine has become an industry problem.This phenomenon mostly occurs in the functional operation of yaw brake.This paper mainly explores how to improve and optimize the friction pad for the yaw brake of wind turbine from the perspective of raw materials to reduce the operating noise.The optimization direction of this new material is to achieve a composite friction structure material with more special properties by blending modified or multi modified bonding resin and adding several auxiliary materials on the basis of the basic mixing of friction pad damping materials and lubrication auxiliary materials in the past.When the brake friction pad made of this material is used for friction sliding,the mechanical vibration frequency generated by the friction dual plate is no longer easily matched with the excitation frequency generated during the operation of the fan coupling system,so the yaw brake will not easily resonate with the vibration frequency generated during the operation of the fan coupling system to produce mechanical noise.