不同工况下风电机组主轴轴承动态特性研究  

RESEARCH ON DYNAMIC CHARACTERISTICS OF WIND TURBINE MAIN SHAFT BEARING UNDER DIFFERENT WORKING CONDITIONS

作　　者：张娟[1] 赵荣珍[1] 于荣鹏 刘宏[1] 张亚龙[1] 

机构地区：[1]兰州理工大学机电工程学院,兰州730050 [2]苏州大学机电工程学院,苏州215021

出　　处：《机械强度》2017年第6期1468-1473,共6页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51165019)资助~~

摘　　要：为获得风电机组主轴轴承在不同工况下的动态特性,以某汽轮厂1.5 MW风电机组为例,对主轴进行抽象简化,根据叶素理论推导出主轴轴承所承受的轴向载荷和径向载荷。利用UG软件建立主轴轴承模型,导入Adams中建立主轴轴承多刚体动力学模型,对三种不同工况下主轴轴承滚子与内圈、外圈、保持架的之间的相互作用进行分析。结果表明:在风机紧急刹车阶段,主轴轴承滚子与内圈、外圈、保持架的之间的相互作用力最大,转速突变阶段次之,启动至平稳阶段最小。In order to get the dynamic characteristics of wind turbinemain shaft bearing under different working conditions,tooka 1. 5 MW wind turbine manufactured by one turbine factoryas an example,the main shaftwassimplifiedabstractly and the axial and radial loadon main shaft bearingwere given by blade element theory. The 3 D model of main shaft bearingwasdrawn in UG and imported into ADAMS toestablish the multi rigid kinetic model of main shaft bearing,the interactionsbetween the balls of main shaft bearing and inner ring,outer ring and separator wereanalyzed under threedifferent working conditions. The analysis resultsindicate that the interaction forces between the balls of main shaft bearing and inner ring,outer ring and separator aremaximal during theemergency brake period of wind turbine,it is second during thesuddenvariation periodof the wind turbine revolving speedand it is minimalfrom starting until running steadily.

关 键 词：风电机组 主轴轴承 动态特性 动力学模型 

分 类 号：TH13[机械工程—机械制造及自动化]