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    Linear Quadratic Regulator for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System

    Source: Journal of Dynamic Systems, Measurement, and Control:;2009:;volume( 131 ):;issue: 005::page 51002
    Author:
    Fabian Mueller
    ,
    S. Tobias Junker
    ,
    Hossein Ghezel-Ayagh
    ,
    Faryar Jabbari
    ,
    Jacob Brouwer
    DOI: 10.1115/1.3155007
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The control system for fuel cell gas turbine hybrid power plants plays an important role in achieving synergistic operation of subsystems, improving reliability of operation, and reducing frequency of maintenance and downtime. In this paper, we discuss development of advanced control algorithms for a system composed of an internally reforming solid oxide fuel cell coupled with an indirectly heated Brayton cycle gas turbine. In high temperature fuel cells it is critical to closely maintain fuel cell temperatures and to provide sufficient electrochemical reacting species to ensure system durability. The control objective explored here is focused on maintaining the system power output, temperature constraints, and target fuel utilization, in the presence of ambient temperature and fuel composition perturbations. The present work details the development of a centralized linear quadratic regulator (LQR) including state estimation via Kalman filtering. The controller is augmented by local turbine speed control and integral system power control. Relative gain array analysis has indicated that independent control loops of the hybrid system are coupled at time scales greater than 1 s. The objective of the paper is to quantify the performance of a centralized LQR in rejecting fuel and ambient temperature disturbances compared with a previously developed decentralized controller. Results indicate that both the LQR and decentralized controller can well maintain the system power to the disturbances. However, the LQR ensures better maintenance of the fuel cell stack voltage and temperature that can improve high temperature fuel cell system durability.
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      Linear Quadratic Regulator for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System

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    http://yetl.yabesh.ir/yetl1/handle/yetl/140174
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    contributor authorFabian Mueller
    contributor authorS. Tobias Junker
    contributor authorHossein Ghezel-Ayagh
    contributor authorFaryar Jabbari
    contributor authorJacob Brouwer
    date accessioned2017-05-09T00:32:07Z
    date available2017-05-09T00:32:07Z
    date copyrightSeptember, 2009
    date issued2009
    identifier issn0022-0434
    identifier otherJDSMAA-26502#051002_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/140174
    description abstractThe control system for fuel cell gas turbine hybrid power plants plays an important role in achieving synergistic operation of subsystems, improving reliability of operation, and reducing frequency of maintenance and downtime. In this paper, we discuss development of advanced control algorithms for a system composed of an internally reforming solid oxide fuel cell coupled with an indirectly heated Brayton cycle gas turbine. In high temperature fuel cells it is critical to closely maintain fuel cell temperatures and to provide sufficient electrochemical reacting species to ensure system durability. The control objective explored here is focused on maintaining the system power output, temperature constraints, and target fuel utilization, in the presence of ambient temperature and fuel composition perturbations. The present work details the development of a centralized linear quadratic regulator (LQR) including state estimation via Kalman filtering. The controller is augmented by local turbine speed control and integral system power control. Relative gain array analysis has indicated that independent control loops of the hybrid system are coupled at time scales greater than 1 s. The objective of the paper is to quantify the performance of a centralized LQR in rejecting fuel and ambient temperature disturbances compared with a previously developed decentralized controller. Results indicate that both the LQR and decentralized controller can well maintain the system power to the disturbances. However, the LQR ensures better maintenance of the fuel cell stack voltage and temperature that can improve high temperature fuel cell system durability.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleLinear Quadratic Regulator for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System
    typeJournal Paper
    journal volume131
    journal issue5
    journal titleJournal of Dynamic Systems, Measurement, and Control
    identifier doi10.1115/1.3155007
    journal fristpage51002
    identifier eissn1528-9028
    treeJournal of Dynamic Systems, Measurement, and Control:;2009:;volume( 131 ):;issue: 005
    contenttypeFulltext
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