摘要
传统的三阶LCL滤波器存在谐振尖峰问题,文中基于LCL滤波器提出外环使用准比例谐振和改进型重复器为核心的控制系统,内环使用陷波器无源阻尼法。QPR可以实现无静差跟踪,改进重复控制有良好的高次谐波抑制能力,陷波器无源阻尼消除滤波器谐振问题。通过对实验样机仿真与实验,结果表明提高了系统的动态性能和稳定性。
The traditional third-order LCL filter has a resonant peak problem.Based on the LCL filte,core control system is founded by using a quasi-proportional resonance and improved repeater in the outer ring,using the notch passive damping method in inner loop.QPR can realize no static tracking,improve the repetitive control to good harmonic suppression ability,and eliminates the resonance problem of the filter by passive damping of notch filter.The results show that the dynamic performance and stability of the system are improved by the simulation and experiment of the experimental prototype.
作者
陈荣
王虎
CHEN Rong;WANG Hu(School of Electrical Engineering,Yancheng Institute of Technology,Yancheng 224051,Jiangsu Province,China;School of Electronic and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)
出处
《信息技术》
2019年第8期116-120,共5页
Information Technology
关键词
重复控制
光伏逆变器
滤波器
准比例谐振控制
repetitive control
photovoltaic inverter
filter
quasi-proportional resonance control
