International Journal of Fuzzy Logic and Intelligent Systems

Korean Institute of Intelligent Systems (한국지능시스템학회)
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The Performance Improvement of Excitation System using Robust Control with DATABASE

  • Hong, Hyun-Mun (School of Electrical & Electronic Engineering, Donghae University) ;
  • Jeon, Byeong-Seok (School of Electrical & Computer Engineering, Chungbuk National University) ;
  • Kim, Jong-Gun (School of Electrical & Computer Engineering, Chungbuk National University) ;
  • Lee, Sang-Hyuk (School of Electrical and Computer Engineering, Pusan National University)
  • Published : 2005.03.01
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Abstract

This paper deals with the design and evaluation of the robust controller for a synchronous generator excitation system to improve the steady state and transient stability. The nonlinear characteristics of the system is treated as model uncertainties, and then the robust control techniques are introduced into the power system stability design to take into account these uncertainties at the controller design stage. The performance of the designed controller is examined by extensive non-linear time domain simulation. It is shown that the performance of the robust controller is superior to that of the conventional PI controller. This paper also proposes an improved digital exciter control system for a synchronized generator using a digitally designed controller with database. Results show that the proposed control system manifests excellent control performance compared to existing control systems. It has also been confirmed that it is easy for the proposed control system to implement digital control.

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References

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