Publication Date

4-11-2018

Department

Ames Laboratory

Campus Units

Ames Laboratory

Report Number

IS-J 9580

DOI

10.1115/1.4039356

Journal Title

Journal of Electrochemical Energy Conversion and Storage

Volume Number

15

Issue Number

3

First Page

031007

Abstract

This paper evaluates a state-space methodology of a multi-input multi-output (MIMO) control strategy using a two-by-two tightly coupled scenario applied to a physical gas turbine hybrid power system. A centralized MIMO controller was preferred compared to a decentralized control approach because previous simulation studies showed that the coupling effect identified during the simultaneous control of the turbine speed and cathode airflow was better minimized. The MIMO controller was developed using a state-space dynamic model of the system that was derived using first-order transfer functions empirically implemented through experimental tests. The controller performance was evaluated in terms of disturbance rejection through perturbations in the gas turbine operation, and set-point tracking maneuver through turbine speed and cathode airflow steps. The experimental results illustrate that a multi-coordination control strategy was able to mitigate the coupling of each actuator to each output during the simultaneous control of the system, and improved the overall system performance during transient conditions. On the other hand, the controller showed different performance during validation in simulation environment compared to validation in the physical facility, which will require a better dynamic modeling of the system for the implementation of future multivariable control strategies.

Language

en

Department of Energy Subject Categories

29 ENERGY PLANNING, POLICY, AND ECONOMY

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Available for download on Thursday, April 11, 2019

Share

COinS