Research Progress on Lubrication as a Solution to Wind Turbine Bearing Failures
As a large-scale precision machinery for long-term outdoor operation,wind turbines are prone to bearing failure under harsh operating conditions such as alternating loads,variable wind speeds,and unbalanced loads,resulting in an operating life that is often shorter than the designed service life.In the cases of bearing failure,more than 50％of bearing failure is caused by lubrication failure,so reducing lubrication failure to extend the life of the equipment helps to improve the economic efficiency of wind power generation.By investigating the main types of wind turbine bearing failures,such as electro-etching,white etching,pitting,etc.,the current methods of using lubricating grease to solve or improve the bearing failure were summarized,and from the perspective of lubrication technology,the conclusion was drawn on how to prevent the bearing failure to ensure the normal and stable operation of machinery and equipment.Finally,the problems that need to be solved in the wind turbine lubrication and the development trend of the future were proposed.(Charts 17 Tables0 References73)
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