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research-article

Apply Robust PID Controller to a Fuel Cell Gas Turbine

[+] Author and Article Information
Tooran Emami

United States Coast Guard Academy, New London, CT, USA
tooran.emami@uscga.edu

Alex Tsai

United States Coast Guard Academy, New London, CT, USA
alex.tsai@uscga.edu

David Tucker

United States Department of Energy, National Energy Technology Laboratory, Morgantown, W.VA, USA
david.tucker@netl.doe.gov

1Corresponding author.

ASME doi:10.1115/1.4038635 History: Received May 12, 2017; Revised October 17, 2017

Abstract

The performance of a 300 kW Solid Oxide Fuel Cell Gas Turbine (SOFC-GT) pilot power plant simulator is evaluated by applying a set of robust Proportional Integral Derivative (PID) controllers that satisfy time delay and gain uncertainties of the SOFC-GT system. The actuators are a fuel valve (FV) that models the fuel cell thermal exhaust, and a cold-air (CA) valve which bypasses airflow rate from the fuel cell cathode. The robust PID controller results for the upper and lower boundary of uncertain gains are presented first, followed by a design for the upper and lower boundary of uncertain time delays process for both, FV and CA bypass valves. The final design incorporates the combined uncertain gain and the time delay modeling for the upper and lower boundary of both actuators. This Multiple-Input Multiple-Output (MIMO) technique is beneficial to plants having a wide range of operation and a strong parameter interaction. The practical implementation of the PID controllers and the set point responses are presented through simulation in the Matlab/Simulink environment.

Copyright (c) 2017 by ASME
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