Multi-Objective Synthesis Based on Extended State Observer and LMI Optimization for Excitation System of Synchronous Generator

Abstract

This paper presents a method to design excitation controller. The main results rely on extended state observer (ESO) and linear matrix inequalities (LMI) optimization which can handle various closed-loop specifications, such as a given set of admissible initial states, asymptotic stability of the saturating closed-loop system, and D-stability, on different channels. The dynamic feedback linearization method using the nonlinear ESO is introduced, and anticipating dynamic characteristic design for the linearization system is also demonstrated. The validity and applicability of the proposed method are illustrated in a singlemachine infinite-bus (SMIB) system.