摘要
有源滤波器的控制对实时性要求很高,控制延时情况的存在对谐波治理效果影响较大,其中可控器件的死区效应和数字化控制器存在是延时的两个主要方面。本文首先分析延时对系统控制的影响,然后根据重复控制能够消除稳定闭环内所有周期性误差的特点,提出采用改进的重复控制技术进行补偿的方法来有效减小延时以提高系统整体性能的方案。仿真和实验结果验证了延时对控制的影响以及补偿方法的有效性。
According to the demand of active power filter（APF） in real-time control, control delay greatly affects the harmonic elimination effects, in which the dead-time effect of controllable components and the delay of digital controller are two main factors. This paper first analyzes the influence of delay on systematic control. Based on the characteristic that repetitive control can eliminate all periodic error of the stable closed-loop system, a new plan that may improve systematic performance is proposed, in which the improved repetitive control technology is adopted to make compensation and thus to decrease control delay effectively. Simulation and experimental results prove the influence of delay on control and the effectiveness of the compensation method.
出处
《电工技术学报》
EI
CSCD
北大核心
2008年第11期166-172,共7页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(60474041)
湖南省自然科学基金(07JJ6078)资助项目
关键词
有源滤波器
延时
死区效应
数字化控制
重复控制
Active power filter, delay, dead-time effect, digital control, repetitive control
