某型风电机组偏航轴承极限载荷的测试与分析  

Test and analysis of limit load of yaw bearing of a certain wind turbine

作　　者：成依杰 陈龙[1] 孟相旭 韩一念 易阳 CHENG Yijie;CHEN Long;MENG Xiangxu;HAN Yinian;YI Yang(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Shandong Yongxiang Special Bearing Co.,Ltd.,Liaocheng 252000,China;Wuxi Yitong Precision Machinery Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]山东永翔特种轴承有限公司,山东聊城252000 [3]无锡易通精密机械股份有限公司,江苏无锡214000

出　　处：《机电工程》2025年第2期247-256,共10页Journal of Mechanical & Electrical Engineering

基　　金：山东省轴承智能制造创新创业共同体资助项目(ZCGTTXCP008)。

摘　　要：在风力发电机的安全运行方面,偏航轴承在极限载荷作用下的结构强度是其中的关键要素,一般在应用前需要采用单一工况极限载荷校核其结构强度。为解决偏航轴承采用单一工况极限载荷校核结构强度时,计算准确性较低这一问题,以FD-9787/2570偏航轴承为例对极限载荷进行了测试与真值分析。首先,使用Bladed软件仿真,得到了不同工况下的载荷数据,采用分类方式处理了极限载荷数据,并依据不同切入风速划分了子工况;然后,利用自助最大熵方法,获取了不同切入风速下极限载荷的估计真值;最后,采用试验加载了不同切入风速下的极限载荷,测得振动信号值并对比了加载极限载荷与未加载极限载荷状态的威布尔分布参数,对结构强度是否满足要求进行了判断。研究结果表明:将加载了极限载荷估计真值与未加载载荷的FD-9787/2570偏航轴承进行对比,得到振动信号威布尔分布形状参数最大变化为8.6%,尺度参数最大变化为3.1%。上述结果证明,该偏航轴承结构强度可满足风力发电机各种极限工况的需求。The structural strength of yaw bearings under limit loads is a key element for the safe operation of wind turbines.A single operating condition limit load was generally used to verify its structural strength before deployment.In order to address the issue of reduced accuracy in structural strength calculations for yaw bearings assessed under a single operating condition limit load,a true value analysis and test were conducted on the limit loads using FD-9787/2570 yaw bearing as an example.Firstly,load data under different operating conditions were simulated using Bladed software.The ultimate load data was processed using a classification method,and sub operating conditions were divided based on different wind speeds.Then,the self-service maximum entropy method was used to obtain the estimated true values of the ultimate load under different wind speeds.Finally,the experiments were conducted to load the ultimate load at different wind speeds,the vibration signal values were measured,and the Weibull distribution parameters of the loaded ultimate load and unloaded ultimate load states were compared to determine whether the structural strength meets the requirements.The research results show that comparing the estimated true value of the loaded ultimate load with the FD-9787/2570 yaw bearing without load,the maximum change in the Weibull distribution shape parameter of the vibration signal is 8.6%,and the maximum change in the scale parameter is 3.1%.It proves that the structural strength of the yaw bearing can meet various extreme working condition requirements.

关 键 词：转盘轴承 极限载荷校核 机械结构强度 自助最大熵 振动信号 威布尔分布 

分 类 号：TH133.3[机械工程—机械制造及自动化] TM315[电气工程—电机]