6 MW级半直驱永磁风力发电机球轴承异响原因分析及改进  

Analysis and Improvement of Abnormal Noise of Ball Bearings in Factory Test for 6 MW Class Semi-direct Drive Permanent Magnet Wind Turbine

作　　者：李进泽 闫晓凡 梅荣海 佘宝瑛 王凯 LI Jinze;YAN Xiaofan;MEI Ronghai;SHE Baoying;WANG Kai(CRRC Zhuzhou Electric Motor Co.,Ltd.,412000)

机构地区：[1]中车株洲电机有限公司,412000

出　　处：《电机技术》2022年第2期30-34,共5页Electrical Machinery Technology

摘　　要：针对某型6 MW级半直驱永磁风力发电机批量生产时,在出厂试验过程中频繁出现的球轴承异响现象,从轴承负荷计算、轴承内圈三维轨迹测绘分析和试验验证等方面对异响原因进行了分析,提出球轴承异响主要与轴承径向负荷不足、转子旋转精度差有关。验证结果表明,增加轴承预负荷,提高转子动平衡精度,可有效消除球轴承该类异响现象。Aiming at mass production of 6 MW class semi-direct drive per manent magnet wind t urbine,the abnormal noise of the ball bearings occurred frequently during the routine test.The causes of the abnormal noise are analyzed from the aspects of bearing load calculation,inner ring three-dimensional trajectory mapping analysis and test verification.It is proposed that the abnormal noise of the ball bearings is mainly related to the insufficient radial load of the bearing and the poor rotation accuracy of the rotor.The verification results show that increasing the bearing preload and improving the rotor dynamic balance accuracy can effectively eliminate the abnormal noise of the ball bearings.

关 键 词：轴承异响 敲击现象 转子动平衡 轴承预负荷 

分 类 号：TM307[电气工程—电机]