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，提出了一种模糊／PID双模控制。具有在线参数调整的自适应占空比扰动法，该方法同步精度高，动态响应快，能迅速调整发电机与负载之间的功率匹配，减少最大功率点的振荡，使风力机以最佳叶尖速比运行。通过仿真实验表明，采用模糊／PID控制电路，能够快速准确的跟踪风力发电系统的最大功率点，改善最大功率点的振荡，减少能量损失，提高能量转换效率。
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 based on fuzzy and PID 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, reducing output power oscillation around MPP, and then the wind turbine can work at the best tip-speed ratio. The simulation results showed that, the proposed method can track MPP exactly and quickly, reduce output power oscillation and energy loss, and greatly improve energy conversion efficiency.
出处
《能源工程》
2010年第1期26-31,共6页
Energy Engineering
基金
国家十一五863计划资助项目（2006AA052251）
关键词
风力发电系统
最大功率点跟踪
PID/模糊控制
仿真
wind energy conversion system
MPPT （maximum power point tracking）
PID/fuzzy control
simulation
