H^∞Control for a Heat Recovery Steam Generator

Abstract

In this paper H^∞ control has been applied to an interactive steam pressure and steam flow control system of a Heat Recovery Steam Generator (HRSG) of a thermal power plant. The controller structure is taken account for practical applications on a commercial plant. H^∞ control for the interactive system is verified the experiments on a commercial sized test facility. In addition to the nominal performance, robustness of H^∞control has been also verified. To demonstrate a practical applicability, the experiments for signal saturation and noise reduction have been accomplished.