基于液力调速的风力发电传动系统计算与分析

Calculation and Analysis of Wind Turbine Transmission System Based on Hydrodynamic Speed Adjustment

摘要:

为使大型风电机组高效、稳定、可靠地并网发电，对行星齿轮传动与导叶可调液力变矩器相配合的液力调速风电机组传动系统进行了计算与分析.利用节点法分析计算调速系统的功率流动情况，得出调速系统结构参数的约束条件，阐述系统的调速过程，对优化功率分配方案有着重要意义.建立了风轮数学模型，并对传动系统特性进行计算，得到风轮运行过程中各结构参数对调速系统性能的影响.重点分析导叶可调液力变矩器的性能对调速系统性能的影响，为其设计奠定基础.

Abstract:

To ensure large scale wind turbines work efficiently, stably and reliably, a hydrodynamic speed adjustment system is proposed, in which planetary gear transmission matches with torque converter with adjustable guide banes. Power flow of the system is calculated by node method, constraint conditions of structure parameters of the speed adjustment system are obtained and the principle of the speed adjustment system is described. It has important significance on the optimization of power distribution scheme. The mathematical model of wind wheel is established and the performance of transmission system is calculated. The relation between structure parameters and speed adjustment system is obtained. The effect of torque converter with adjustable guide vanes on the speed adjustment system is analyzed emphatically, which lays a foundation for the design of torque converter with adjustable guide vanes.