风力发电机组主动偏航系统

Active Yaw System of Wind Generating Set

整个风电机组高效稳定运行的关键是控制技术,而主动偏航控制系统是水平轴风电机组控制系统的重要组成部分。为了解决风向的不确定性对风机功率的影响,笔者设计模糊控制器,使风机准确跟踪风向,完成最大捕获风能的控制策略。同时为了避免偏航过程中电缆的缠绕、绞死,保护在强风天气下工作的风机,对风机的解缆和90°侧风提出了设计思路,给出了具体控制流程图。结果表明:该套主动偏航系统的存在可以使风力发电机运转平稳可靠,高效利用风能,符合偏航系统的控制要求。

Control technology is the key unit of efficient and stable operation for the wind power system,the yaw system is an important controlling part of the horizontal axis wind-driven generator system.To address the impact by uncertainty wind on the fan,this article use the fuzzy logic control technology to make sure that wind generators accurately track the wind direction and change is always consistent for maximum capture of wind energy control strategies.Fans of the untwisting and 90 degrees crosswind design ideas and specific control flow chart are put forward in order to avoid winding cable or hanged during yaw,also,protect the fan from the strong wind weather.The results show that the existence of the yaw system can make the wind turbines work smoothly and reliably,use the wind energy efficiently.This approach is consistent with the yaw control of the system requirements.