风电齿轮箱行星轮轴承的典型故障案例

A Planet Bearing Fault Case of Wind Turbine Gearbox

对于目前市场上主流的双馈式风力发电机，增速齿轮箱是其中重要的部件，也是易损坏的部件。齿轮箱的故障中，齿轮故障和高速端定轴轮系的轴承故障案例较为常见，而行星轮轴承故障的案例则相对较少，对其故障特性的研究也相对缺乏。本文从一个风电现场实际检查出的行星轮轴承故障的典型案例出发，分别介绍了现场发现异常、检查思路的确定、振动测试分析结果、通过内窥镜及拆机的方式检查故障，最后，对故障在信号中的特征表现做出了分析和解释。

Doubly-fed wind power generator takes the largest share of wind energy. However, as the most important part, the speed-up gearbox is easy to be damaged. The existing researches about gearbox faults are mainly about gear fault,the study of bearing fault is relatively less compared with gear fault,expecially for the bearing fault of planet gear. This article presents a typical case of bearing fault about planet gear, which contains the cause of vibration behaviour and the analysis of fault.