大型风电机组传动系统动力学仿真分析

Dynamics Simulation Analysis for Large Wind Turbines Transmission System

针对国产750 kW风力发电机组传动系统故障率较高的特点及增速箱齿轮的失效形式,采用计算机辅助工程技术,重新设计增速箱的传动结构;建立传动系统动力学模型并进行动力学仿真,得到啮合齿轮间接触力与接触区域随时间变化的数据,为进一步的结构有限元分析和优化提供参考。另外,在工作条件恶劣的情况下,对风电机组进行冲击载荷下的动力学仿真分析,得出系统结构的力与力矩的突变曲线图,为风电机组各部件结构及控制系统的设计提供数据基础,为进一步了解风电机组设计机理打下基础。

Adopting CAE technology, the speedup transmission system was redesigned aiming at the character of higher rate of failure in domestic made 750 kW wind turbines transmission system and disabled forms of speedup gearbox. Dynamic model of transmission syslem was built up and simulated, and data varied with time of matcb gears toucb force and contact district were obtained, which provided reference for analysis and optimizing of structure FEA. Under abominable working condition, the dynamics simulation of wind turbines under impulsion load was analyzed, changing curves of force and torque of the system were obtained, which provided data foundation for the design of parts＇ structure and control system of wind turbines. It lays foundation for further understanding design mechanism of wind turbines.