LS-SVM Modeling Based Inverse Controller With Uncertainty Compensation

[+] Author and Article Information
Xiaofang Yuan

College of Electrical and Information Engineering, Hunan University, Changsha Hunan 410082, P.R. Chinayuanxiaof@21cn.com

Yaonan Wang

College of Electrical and Information Engineering, Hunan University, Changsha Hunan 410082, P.R. China

J. Dyn. Sys., Meas., Control 129(6), 845-850 (Apr 19, 2007) (6 pages) doi:10.1115/1.2789724 History: Received September 20, 2006; Revised April 19, 2007

Least squares support vector machine (LS-SVM) modeling based inverse controller (IC) is presented for excitation control of synchronous generator. This IC strategy design includes two main parts: inverse control law and uncertainty compensation. The inverse control law, designed for the control of plant dynamics, is derived directly based on Taylor expansion and it is implemented using LS-SVM modeling. In addition, a robustness filter in the feedback structure, designed for plant disturbance, is employed as uncertainty compensation. The robust stability of the proposed controller is analyzed based on Lyapunov function. Simulations demonstrate the effectiveness of the IC strategy for excitation control.

Copyright © 2007 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 1

The structure of proposed IC strategy

Grahic Jump Location
Figure 2

Response to step changes in the reference voltage of the exciter

Grahic Jump Location
Figure 3

Response to three-phase short circuit test



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