并联混合有源滤波器逆系统解耦控制
Inverse system method based decoupling control of shunt hybrid active power filter
摘要点击 1258  全文点击 1288  投稿时间:2012-11-01  修订日期:2013-03-26
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DOI编号  10.7641/CTA.2013.21121
  2013,30(9):1145-1152
中文关键词  谐波  混合有源滤波器  逆系统  极点配置  零动态
英文关键词  harmonics  hybrid active power filter  inverse system  pole assignment  zero dynamics
基金项目  国家自然科学基金资助项目(61174068).
作者单位E-mail
鲁伟 清华大学 自动化系 lu-w09@mails.tsinghua.edu.cn 
李春文 清华大学 自动化系  
徐长波 清华大学 自动化系  
中文摘要
      针对并联混合有源滤波器(SHAPF)这一强耦合非线性系统的控制问题, 提出了一种基于逆系统方法的SHAPF反馈线性化解耦控制策略. 首先根据SHAPF非线性数学模型, 采用逆系统方法生成其®阶积分逆系统, 进而构造出解耦的伪线性系统, 然后利用极点配置方法对伪线性系统进行综合, 设计了系统的闭环控制器, 并给出了系统零动态的镇定条件, 保证了闭环控制系统的稳定性. 最后仿真实验表明该控制策略能够有效消除电网中的谐波电流, 并且与传统线性反馈–前馈控制策略相比, 该控制策略具有更好的动静态性能.
英文摘要
      To tackle the strong coupling and nonlinearity of the shunt hybrid active power filter (SHAPF) system, we propose a novel feedback linearization control strategy based on the inverse system method. To the nonlinear model of SHAPF, we apply the inverse system method to produce its ®th inverse system, from which the decoupled pseudo-linear system is obtained. This pseudo-linear system is synthesized by using the pole assignment method to design the controller for the closed-loop system. The stabilization condition of the zero dynamics of the SHAPF is presented, which ensures the stability of the close-loop system. Simulations show that the harmonics can be effectively eliminated by the proposed control strategy, and a better steady-state and transient performances can be achieved in comparison with the traditional linear feedback-feedforward control strategy.