电力系统自动化Issue(20)：101-107,7.DOI:10.7500/AEPS20131006005
LCL 并网逆变器改进型重复控制策略
An Improved Repetitive Control Strategy for Grid-connected Inverters with LCL Filter
摘要
Abstract
The control systems of grid-connected inverters with LCL filter based on“proportion-integration PI and repetitive control” are analyzed in detail.And it is pointed out that its dynamic performance has yet to be further improved and its compensation function form is complex while difficult to achieve.By using the zero phase error tracking control and disturbance observer DOB ,an improved repetitive control strategy is proposed.The use of the zero phase error tracking control can improve the dynamic performance of the system and its compensation function can be easily designed.On the other hand,the use of DOB can overcome the parameter dependence shortcomings of zero phase error tracking control.Finally,simulations and experiments show that,compared with “PI and repetitive control”,the proposed control strategy can yield a better dynamic performance and,while ensuring the steady-state control accuracy,it also has the advantage of strong robustness.关键词
并网逆变器/重复控制/零相位误差跟踪控制/干扰观测器/鲁棒性Key words
grid-connected inverters/repetitive control/zero phase error tracking control/disturbance observer DOB/robustness引用本文复制引用
张兴,汪杨俊,余畅舟,王付胜,赵为,倪华..LCL 并网逆变器改进型重复控制策略[J].电力系统自动化,2014,(20):101-107,7.基金项目
国家自然科学基金资助项目(51277051).This work is supported by National Natural Science Foundation of China No.51277051 （51277051）
