带电压反馈的非线性最优励磁控制器设计
杨伟，李仁东
【南京理工大学动力S-程学院，江苏南京21 0094)
摘要：传统非线性控制器对系统暂态时的角频率和功角的稳定具有显著效果，但对机端电压的控制却并不理想。为解决这一
问题，将状态反馈精确线性化理论和最优控制理论相结合设计了一种非线性最优励磁控制器，并在控制中引入电压反馈，即
将具有良好机端电压控制效果的基于电压偏差的PIn控制和非线性最优控制相结合设计了一种新型励磁控制器。通过使用
Matlab对算例进行仿真，验证了该控制器在小扰动和大扰动情况下不仅能够保证角频率、功角的稳定，还能很好地稳定机
端电压，明显改善了传统控制器在机端电压控制方面的缺陷。
关键词：精确线性化；最优控制；励磁控制；电压反馈；Mat1ab
Design of nonlinear optim al excitation controller with voltage feedback
YANG W ei，LIRen—dong
(College ofPower Enigneering，Nanjing University ofTechnology,Nanjing 210094，China)
Abstract： Traditional nonlinear controller iS good at the control of angular frequency and load angle．but weak at the control of
terminal voltage．To solve this problem．a non—linear optimal excitation controller based on exact feedback linearization and optimal
control theory iS designed．In this design terminal voltage iS introduced as a feedback．Because ofthe in~oduction ofterminal voltage
feedback，the controller call stabilize the terminal voltage effectively．The application to an example system using Matlab verifies that
in a small disturbance and large disturbance cases this controller can not only ensure the stability ofangular frequency and load angle，
but also Can efectively stabilize the termina1 voltage．which remarkably improves the deficiencies in the control of terminaI voltage
ofthe traditional excitation contro1．
Key words： exact feedback linearization； optimal control； excitation control； voltage feedback； Matlab
中图分类号： TM76 文献标识码：A 文章编号： 1674．3415(2010)14一Ol10—05
发表于 2011-2-4 00:33:33
