CAJ | 학술논문

基于集中参数质量法建立风力发电机组四质量块柔性传动模型，在综合考虑外部风载、齿轮副啮合刚度、啮合阻尼和综合啮合误差激励条件下建立齿轮箱内部各级齿轮副动力学方程。以1．5MW 风力发电机组为计算对象，计算柔性传动系统固有频率和齿轮箱各级齿轮动态啮合力，通过雨流计数法对齿轮动态啮合力进行统计分析，结果显示动态啮合力具有很强的时变特性，此研究方法为齿轮和轴承设计、寿命预估建模提供依据。并对传动系统稳定性进行分析，结果显示传动系统一阶扭振频率与风轮面内一阶摆振频率偏差为7．5％，通过降低主轴重量约8．5％，提高了传动系统一阶扭转频率值5％，提高后的频率值与风轮面内一阶摆阵频率偏差达11．9％，大于规范推荐值10％，为风力发电机组传动系统设计和可靠性研究提供参考。
기우집중삼수질량법건립풍력발전궤조사질량괴유성전동모형，재종합고필외부풍재、치륜부교합강도、교합조니화종합교합오차격려조건하건립치륜상내부각급치륜부동역학방정。이1．5MW 풍력발전궤조위계산대상，계산유성전동계통고유빈솔화치륜상각급치륜동태교합력，통과우류계수법대치륜동태교합력진행통계분석，결과현시동태교합력구유흔강적시변특성，차연구방법위치륜화축승설계、수명예고건모제공의거。병대전동계통은정성진행분석，결과현시전동계통일계뉴진빈솔여풍륜면내일계파진빈솔편차위7．5％，통과강저주축중량약8．5％，제고료전동계통일계뉴전빈솔치5％，제고후적빈솔치여풍륜면내일계파진빈솔편차체11．9％，대우규범추천치10％，위풍력발전궤조전동계통설계화가고성연구제공삼고。
Based on the lumped parameter mass standard,a 4-mass wind turbine flexible drive system model was established.Considering external wind load,gear mesh stiffness,mesh damping and meshing error excitation,its gearbox dynamic equations were built.A 1.5 MW wind turbine was taken as a calculation object,the natural frequencies of the flexible drive system and the dynamic meshing forces of the gearbox's gear pairs were computed.The statistical analysis was mad for the gear dynamic meshing forces with the rain flow count method.The results showed that the dynamic meshing forces have strong time-varying characteristics,the proposed method provides a guide for gear and bearing design, and their life forecast modeling.The stability of the flexible drive system was also analysed,the results showed that the deviation between the first order torsional vibration frequency of the drive system and the first order shimmy frequency of the wind turbine rotor is 7.5%,through reducing the weight of the main shaft about 8.5%,the first order torsional vibration frequency of the drive system increases 5%,then the deviation mentioned above is 11.9%,it is 10% larger than the specification value recommended.All results provided a theoretical foundation for wind turbine drive system design and its reliability study.