H∞ optimal control of a synchronous turbo-generator

The aim of this paper is to investigate the use of H^∞ optimal control methods in improving the performance of synchronous turbo-generators. Our study is based on a single machine infinite bus system. The approach is to use an H^∞ controller in addition to the automatic voltage regulator (AVR) and speed governor which are fitted as standard equipment on most large turbo-generator sets. The results compare favourably with those obtained using other multivariable design methodologies much as linear quadratic optimal control.