Research Papers

Triple-Layer Control System for Molten Carbonate Fuel Cell–Gas Turbine Hybrid System

[+] Author and Article Information
Jarosław Milewski

Associate Professor
Institute of Heat Engineering,
Faculty of Power and Aeronautical Engineering,
Warsaw University of Technology,
Warsaw 00-665, Poland
e-mail: milewski@itc.pw.edu.pl

Piotr Biczel

Assistant Professor
Institute of Electric Machines,
Faculty of Electrical Engineering,
Warsaw University of Technology,
Warsaw 00-661, Poland
e-mail: piotr.biczel@ee.pw.edu.pl

Mariusz Kłos

Institute of Electric Power Engineering,
Faculty of Electrical Engineering,
Warsaw University of Technology,
Warsaw 00-661, Poland
e-mail: maklos@ee.pw.edu.pl

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received July 29, 2014; final manuscript received July 19, 2015; published online August 12, 2015. Assoc. Editor: Umberto Desideri.

J. Fuel Cell Sci. Technol 12(4), 041005 (Aug 12, 2015) (7 pages) Paper No: FC-14-1090; doi: 10.1115/1.4031169 History: Received July 29, 2014

The control system of molten carbonate fuel cell (MCFC) coupled with a gas turbine (GT) should be based on the multilayer structure (two- or three-layers), wherein the third layer is connected with the power output from the system and can be considered separately. Simulation model of the MCFC–GT hybrid system (HS) was built. The simulator is based on a zero-dimensional modeling of the individual elements of the system. The simulator was used for mapping the main components behavior (MCFC and GT separately). On the basis of the obtained maps of the performances and adopted restrictions on technical–operational nature, the operation line for the first line of the control strategy was obtained. The control system which realizes the obtained control strategy was built in reality. Then, the hardware-based models of the main elements were created based on the electric equipment. The hardware–software model was connected to the control system and adequate simulations were performed. The presented results indicate that the analyzed MCFC–GT HS possesses a high operation and control flexibility while at the same time maintaining stable thermal efficiency. Operation of the system is possible over a wide range of parameter changes.

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Fig. 1

The configuration of MCFC–GT HS

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Fig. 2

Triple-layer control system

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Fig. 3

The general structure of DC/DC converter

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Fig. 4

Block scheme of single unit controller

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Fig. 5

Texas Instruments TMS320F2812 controller

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Fig. 6

Block scheme of the algorithm implemented in the single unit controller

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Fig. 7

The structure of the communication between the MCFC module and GT subsystem by the control system

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Fig. 8

A view of the motherboard which integrates a microcontroller ATMEGA 128 16 MHz with Ethernet controller RTL1819AS IEEE 802.3 10 Mb/s for carrying out the function of a web server

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Fig. 10

Gas turbine set hardware-based model with an inverter drive by Danfoss

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Fig. 11

Scheme of the electric system of the simulator

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Fig. 12

The simulator with connected measurements and data acquisition instrumentation

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Fig. 13

The measured power generated by the system and the corresponding equipments obtained using the control system

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Fig. 14

MCFC and GT set powers as functions of total system power (MCFC–GT)




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