摘要
利用风速分频原理,将风速分为稳态风速和动态风速。考虑低风速工况和高风速工况两种风速特性,分别提出了对发电机的转矩控制策略。当风力发电机运行在低风速工况条件下时,将模糊算法应用到风力发电机最大风能的捕获上,使风电机组的功率系数最大并保持恒定,从而实现了风力发电机在运行过程中最优功率控制的目标。通过MATLAB构建软件仿真平台,模拟仿真试验证明,在低风速工况条件下,该种模糊控制的方式是有效可行的。当风电机组运行在高于额定风速即高风速工况条件下时,对变桨动态控制器进行了设计,有效地解决了在风速测量时,调节桨距角惯性以及出现的滞后问题。
As a random variation of the time,wind speed has the characteristics of multi-time scale. A lot of work for the steady state and dynamic wind speedhad been analyzedby the predecessors with wind speed frequency principle. In this paper,the torque control strategy of the generator was proposed by taking into account the two wind speed characteristics of lowwind speed and high wind speed. When the wind power generator operated in lowspeed,fuzzy algorithm was applied to realize wind generator for maximum wind energy capture to keep the wind turbine power coefficient maximum and constant,thereby achieved the goal of wind turbines in operation in the optimal power control. Through the MATLAB software simulation platform,the simulation experiment proved that the fuzzy control method was feasible under the condition of lowwind speed. When the wind turbine ran at above rated wind speed,the measurement of wind speed,the pitch angle of inertiaadjustment and lagging were solvedeffectively by pitch dynamic controller redesigning.
出处
《沈阳工程学院学报（自然科学版）》
2016年第1期11-17,共7页
Journal of Shenyang Institute of Engineering:Natural Science
关键词
风力发电
风速分频
模糊算法
最优功率控制
Wind Power
Wind Speed Frequency Division
Fuzzy Algorithm
Optimal Power Control
