摘要
详细分析并网逆变器的控制策略,针对传统PI参数不能跟随风速实时变化,出现控制效果不佳的情况,研究采用模糊PI控制方法,该方法能够根据风速变化实时调节,提高并网逆变器对于外部干扰、参数变化的控制效果,使逆变器输出的电流快速跟踪电网电压,达到与电网电压同频同相和提高风力发电并网效率和可靠性的目的,通过在Matlab/simulink仿真软件上进行仿真,验证了方法的正确性.
The detailed analysis of controlling strateyg of grid connected inverter is conducted in this paper. The traditional PI parameter does not change in real time with alteration of wind speed and presents ineffective controlling situation. The fuzzy PI control method is studied in this paper. It can adjust parameter in real time according to the change of wind speed and improve the control effect of grid connected inverter for external disturbances and parameter variations. The output current of inverter can track the grid voltage fast,achieve synchronization with the grid voltage and improve wind power grid efficiency and reliability. Finally,this method is simulated by the software of Matlab/Simulink and the theoretical correctness is verified.
出处
《湖南工程学院学报（自然科学版）》
2015年第1期5-9,共5页
Journal of Hunan Institute of Engineering(Natural Science Edition)
基金
湖南省科技创新计划资助项目(CX2014B439)
湖南省高校重点实验室创新平台资助项目(11K018)
湖南省科技计划资助项目(2011GK3143)
关键词
风力发电
并网逆变器
模糊PID控制
仿真建模
wind power generation
grid-connected inverter
fuzzy PID controlling
simulation modeling
