重庆大学学报2024，Vol.47Issue(11)：1-14,14.DOI:10.11835/j.issn.1000-582X.2023.109
机架柔性对双风轮风电机组传动链固有特性的影响
Influences of frame flexibility on natural characteristics of dual-rotor wind turbine drivetrain
摘要
Abstract
The dual-rotor wind turbine is an innovative horizontal axis design that harnesses the wake of the front turbine for additional power generation,leading to a higher wind energy utilization coefficient.However,the longer axial span required to minimize the flow field interference between the front and rear turbines complicates the drivetrain's modal characteristics,raising the risk of resonance due to multi-point elastic support in the flexible frame.This study incorporates frame flexibility and elastic support into a rigid-flexible coupling dynamic model of the drivetrain using multibody dynamics.The analysis of the drivetrain's coupling vibration modes reveals that the first two torsional vibration natural frequencies are 5.63 Hz and 6.01 Hz,corresponding to the rear and front turbine drivetrains,respectively.The drivetrain exhibits three vibration modes:local vibration in either the front or rear turbine,coupled vibration in either turbine drivetrain,and coupled vibration between both turbines.The study concludes that frame flexibility redistributes modal energy across components,affecting the drivetrain's natural characteristics.关键词
双风轮风电机组/传动链/刚柔耦合/固有特性Key words
dual-rotor wind turbine/drivetrain/rigid-flexible coupling/natural characteristics分类
机械制造引用本文复制引用
帅权,朱才朝,谭建军,武雅如,谭术平,劳文欣..机架柔性对双风轮风电机组传动链固有特性的影响[J].重庆大学学报,2024,47(11):1-14,14.基金项目
国家重点研发计划资助项目(2020YFB1506600) （2020YFB1506600）
山西省重点研发计划项目(202102060301017) （202102060301017）
广东省重点研发计划项目(2021B0101230002). Supported by National Key R&D Program of China(2020YFB1506600),Key R&D Program of Shanxi Province(202102060301017),and Key R&D Program of Guangdong Province(2021B0101230002). （2021B0101230002）
