基于非仿射非线性模型的AC/DC系统H_∞鲁棒控制器设计  

H_∞ Robust Control of AC/DC Systems with Non-affine Nonlinear Model

作　　者：汤洪海[1] 李春文[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《自动化学报》2007年第7期709-713,共5页Acta Automatica Sinica

基　　金：国家重点基础研究专项基金(G1998020307)资助~~

摘　　要：讨论了交直流联合输电系统的H_∞鲁棒控制问题．首先对交直流输电系统提出一种五阶非仿射非线性不确定控制模型,该模型能综合反映交直流系统的动态特性．基于该模型采用分层控制思想设计了系统的H_∞鲁棒控制器,通过对直流系统换流器触发角的控制实现系统内部稳定和鲁棒性能的提高．仿真结果验证了控制策略的有效性．The H∞ robust controller design of AC/DC power system is investigated in this paper. Firstly, a novel fifth-order uncertain non-affine nonlinear model is put forward. The proposed model can describe both the dynamics of DC and AC systems. Then, an H∞ robust controller is constructed by employing the texonomy design principle. It is shown that through the firing angle control of the DC system converters, the stability can be improved and the robust performance can be guaranteed. Simulation results illustrate the effectiveness of the proposed control strategy.

关 键 词：交直流输电系统 非仿射非线性系统 反馈线性化 H∞鲁棒控制 

分 类 号：TM761[电气工程—电力系统及自动化]