太阳能Issue(5)：101-108,8.DOI:10.19911/j.1003-0417.tyn20230607.01
半直驱中速永磁同步发电机轴承发生微电流腐蚀的故障诊断分析
DIAGNOSIS AND ANALYSIS OF MICRO CURRENT CORROSION FAULTS IN BEARINGS OF SEMI DIRECT DRIVE MEDIUM SPEED PERMANENT MAGNET SYNCHRONOUS GENERATORS
王子顺1
作者信息
- 1. 明阳智慧能源集团股份公司,中山 528400
- 折叠
摘要
Abstract
The failure mode of bearing raceway with a"washboard"pattern is one of the common faults in wind turbines.This paper focuses on the micro current corrosion fault of bearings in semi direct drive medium speed permanent magnet synchronous generators.Firstly,the vibration signals of generator bearings during operation are collected through an online monitoring system.Then through the extraction and diagnostic analysis of vibration signal fault characteristics,the failure mode and fault development process of micro current corrosion in bearing raceways are studied and reproduced.Finally,the effectiveness of measures to suppress shaft current is synchronously verified to ensure the healthy and reliable operation of wind turbines.Analysis shows that the"washboard"pattern on the bearing raceway of generator in faulty wind turbine is not the main failure mode of the bearing,but a manifestation of secondary damage to the bearing raceway.Over time,the damage(shallow pits)pattern on the bearing raceway gradually overlap and becomes clearer,indicating that the main failure mode of the generator is bearing micro current corrosion.关键词
微电流腐蚀/半直驱中速永磁同步发电机/风电机组/轴承/振动信号/故障诊断/在线监测Key words
micro current corrosion/semi direct drive medium speed permanent magnet synchronous generator/wind turbines/bearings/vibration signal/fault diagnosis/online monitoring分类
信息技术与安全科学引用本文复制引用
王子顺..半直驱中速永磁同步发电机轴承发生微电流腐蚀的故障诊断分析[J].太阳能,2024,(5):101-108,8.
