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Research Papers

Fuzzy Logic Based Controller for a Grid-Connected Solid Oxide Fuel Cell Power Plant

[+] Author and Article Information
Kalyan Chatterjee

Associate Professor
Department of Electrical Engineering,
Indian School of Mines (ISM),
Dhanbad, Jharkhand 826004, India
e-mail: kalyanbit@yahoo.co.in

Ravi Shankar

JRF/EE
Department of Electrical Engineering,
Indian School of Mines (ISM),
Dhanbad, Jharkhand 826004, India
e-mail: ravi060173@gmail.com

Amit Kumar

JRF/EE
Department of Electrical Engineering,
Indian School of Mines (ISM),
Dhanbad, Jharkhand 826004, India
e-mail: amibits@gmail.com

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received December 10, 2013; final manuscript received April 17, 2014; published online June 10, 2014. Assoc. Editor: Umberto Desideri.

J. Fuel Cell Sci. Technol 11(5), 051005 (Jun 10, 2014) (9 pages) Paper No: FC-13-1121; doi: 10.1115/1.4027709 History: Received December 10, 2013; Revised April 17, 2014

This paper describes a mathematical model of a solid oxide fuel cell (SOFC) power plant integrated in a multimachine power system. The utilization factor of a fuel stack maintains steady state by tuning the fuel valve in the fuel processor at a rate proportional to a current drawn from the fuel stack. A suitable fuzzy logic control is used for the overall system, its objective being controlling the current drawn by the power conditioning unit and meet a desirable output power demand. The proposed control scheme is verified through computer simulations.

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Figures

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Fig. 1

Block diagram of fuel cell dynamic modeling

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Fig. 2

Block diagram of a fuel cell and grid interface

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Fig. 3

Block diagram of fuel cell control loop

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Fig. 4

Block diagram of overall control strategy

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Fig. 5

Two area interconnected power systems integrated with the SOFC power plant

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Fig. 6

Matlab and Simulink diagram for simulated fuzzy approached SOFC power plant with two area power system

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Fig. 7

(a) Partial pressure of hydrogen (p(H2)), (b) partial pressure of water (p(H2O)), (c) partial pressure of oxygen (p(O2)), (d) stack terminal current (IDC), (e) stack terminal voltage (VDC), and (f) real and reactive power of fuel cell (PQFC) when Pref is 0.85 pu

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Fig. 8

(a) Partial pressure of oxygen (p(O2)), (b) partial pressure of hydrogen (p(H2)), (c) partial pressure of water (p(H2O)), (d) stack terminal current (IDC), (e) stack terminal voltage (VDC), and (f) real and reactive power of fuel cell (PQFC) when Pref is 0.95 pu

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Fig. 9

(a) Partial pressure of hydrogen (p(H2)), (b) partial pressure of oxygen (p(O2)), (c) partial pressure of water (p(H2O)), (d) stack terminal voltage (VDC), (e) stack terminal current (IDC) and (f) real and reactive power of fuel cell (PQFC) when Pref is 1 pu

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