APF直流侧电压自适应PI控制
Adaptive PI Control of DC Side Voltage of APF
李柯雨 1宋连庆 1权策1
作者信息
- 1. 西安工程大学电子信息学院,陕西 西安 710000
- 折叠
摘要
三相三线制有源滤波器(APF)大多采用传统的PI控制策略来控制直流侧的电容电压.为了提高有源滤波器的性能指标,在传统的PI控制基础上,结合最小隶属度模糊控制理论,提出模糊PI的直流侧电压自适应控制.模糊PI控制可以根据实时情况改变比例和积分参数,解决了传统 PI 控制器在非线性系统中的缺点.MATLAB仿真表明,模糊PI自适应控制与传统PI控制相比,跟踪性能更强,直流侧电压超调量更低,动态性能更好,并且有效地降低了电网谐波的畸变量.
Abstract
Most of three-phase three-wire active power filters(APF)currently use conventional PI strategy to control capacitor voltage on DC side.Aiming at improving performance of active power filters,the present work studied an fuzzy PI-based adaptive control method by combining conventional PI control strategy with minimum membership fuzzy control theory.Fuzzy PI control can change the proportional and integral parameters according to real-time environment,which surmounts the shortcomings of conventional PI controller in nonlinear systems.It was verified through MATLAB simulation that fuzzy PI-based adaptive control has stronger tracking performance,lower DC side voltage overshoot,and better dynamic performance compared to traditional PI control,and effectively reduces the distortion of power grid harmonics.
关键词
有源电力滤波器/直流侧电压控制/模糊控制理论/自适应PI控制Key words
active power filter/DC side voltage control/fuzzy control theory/adaptive PI control引用本文复制引用
出版年
2024
NETL
NSTL
万方数据