摘要
根据最大功率点跟踪的基本原理及常用风力发电控制系统的特点,提出了一种基于模糊控制、具有在线参数调整的自适应占空比扰动法,该方法能迅速地感知外界的风速变化,调整发电机与负载之间的功率匹配,使风力机以最佳叶尖速比运行。通过Matlab/Simulink仿真实验表明:采用模糊控制电路,风力机的输出功率大幅提高,在风速发生突变的情况下,也能快速地找到新的最大功率点。
According to the basic principles of maximum power point tracking and the advantages and disadvantages of common control system for wind power conversion, a new method base on fuzzy control which includes automatic parameter tuning and directly uses the DC/DC converter duty cycle as a control parameter is presented. This method can quickly perceive the changes of external wind speed and adjust the power between the generator and load, and then the wind tur- bine can work at the best tip-speed ratio. The simulation results showed that when use the fuzzy control, the output power of the wind turbine power generation system increased substantially. At the same time, when the mutation occurred in wind speed, it can quickly find a new maximum power point.
出处
《可再生能源》
CAS
北大核心
2009年第3期27-31,共5页
Renewable Energy Resources
基金
国家"十一五""863"计划项目(2006AA05Z251)
关键词
风力发电系统
最大功率点跟踪
模糊控制
wind energy conversion system
MPPT （maximum power point tracking）
fuzzy control
