摘要
关于高压直流输电系统中换流器整流侧定功率、逆变侧定关断越前角的控制问题,针对三阶非仿射非线性的系统模型,基于偏差线性化控制方法,设计了线性二次型最优控制器;基于多变量非线性控制的逆系统方法,设计了非线性反馈线性化控制器。利用Matlab/Simulink进行仿真实验,对系统存在状态初值扰动情况时,比较两种控制策略下系统的动态性能。仿真结果证明了非线性控制策略的优越性,表明了文中所提方法的可靠性和有效性。
Three-order non-affine nonlinear control model is applied in the converter control operating in constant rectifier power and constant inverter extinction angle in HVDC systems. The linear quadratic optimal controller is designed by using the approximation linearization modelling method. Nonlinear feed- back linearization controller is obtained in terms of inverse system method of the multi-variable nonlinear system. The comparation is conducted on the two different control strategy dynamic capability with state initial disturbance. Simulation results illus-trate the effectiveness and reliability of the proposed control strategy.
出处
《电气应用》
北大核心
2008年第5期72-75,共4页
Electrotechnical Application
基金
国家自然科学基金重点项目(60433050)
