基于牛顿-拉夫逊法的风速观测器设计  

The Implementation of Wind Speed Observation Based on Newton-Raphson Method

作　　者：刘乾 徐洋超 李赟[3] 

机构地区：[1]南京磐能电力科技股份有限公司,江苏南京210032 [2]国网浙江省电力公司绍兴供电公司,浙江绍兴312000 [3]南京理工大学自动化学院,江苏南京210094

出　　处：《电力工程技术》2017年第5期71-75,共5页Electric Power Engineering Technology

摘　　要：风速是风力发电机的一个重要参量,准确获取风机运行过程中实时的风速信息对风机的控制十分重要。文中基于牛顿-拉夫逊方法,设计并实现了一种风速观测器。该观测器根据风轮机运行中实时的运行状态数据,迭代估计出叶尖速比的近似值,再由它与风速的对应关系计算出实时的估计风速,达到风速观测的目的。最后,将该风速观测器分别在Matlab和风力机模拟器中进行仿真和实验验证,结果表明,所设计的风速观测器具有良好的风速估计性能,符合预期目标。Wind speed is an important parameter for the operation of wind energy conversion systems （ WECSs） , and its obtaining affects the control of WECSs. A wind speed observation based on Newton-Raphson Method is presented, which uses the real-time states collected in the operation of WECS to estimate the tip speed ratio. Then the estimated can be calculated by the relationship of the tip speed ratio and the wind speed. Finally, the wind speed observer is respectively verified by simulation and the wind turbine simulator based experiment. According to the emulational and experimental results, the wind speed observer has a satisfactory performance,meeting the desired goals.

关 键 词：牛顿-拉夫逊算法 风速观测 变速风电机组 叶尖速比 风力机模拟器 

分 类 号：TM614[电气工程—电力系统及自动化]