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Article

Kalman Filter-Based Online Identification of the Electric Power Characteristic of Solid Oxide Fuel Cells Aiming at Maximum Power Point Tracking

Chair of Mechatronics, University of Rostock, D-18059 Rostock, Germany
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Received: 31 January 2020 / Revised: 24 February 2020 / Accepted: 28 February 2020 / Published: 2 March 2020
(This article belongs to the Special Issue Algorithms for Reliable Estimation, Identification and Control)
High-temperature fuel cells are one of the devices currently investigated for an integration into distributed power supply grids. Such distributed grids aim at the simultaneous production of thermal energy and electricity. To maximize the efficiency of fuel cell systems, it is reasonable to track the point of maximum electric power production and to operate the system in close vicinity to this point. However, variations of gas mass flows, especially the concentration of hydrogen contained in the anode gas, as well as variations of the internal temperature distribution in the fuel cell stack module lead to the fact that the maximum power point changes in dependence of the aforementioned phenomena. Therefore, this paper first proposes a real-time capable stochastic filter approach for the local identification of the electric power characteristic of the fuel cell. Second, based on this estimate, a maximum power point tracking procedure is derived. It is based on an iteration procedure under consideration of the estimation accuracy of the stochastic filter and adjusts the fuel cell’s electric current so that optimal operating points are guaranteed. Numerical simulations, based on real measured data gathered at a test rig available at the Chair of Mechatronics at the University of Rostock, Germany, conclude this paper. View Full-Text
Keywords: Kalman filter design; fuel cells; maximum power point tracking; real-time optimization Kalman filter design; fuel cells; maximum power point tracking; real-time optimization
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MDPI and ACS Style

Rauh, A.; Frenkel, W.; Kersten, J. Kalman Filter-Based Online Identification of the Electric Power Characteristic of Solid Oxide Fuel Cells Aiming at Maximum Power Point Tracking. Algorithms 2020, 13, 58. https://0-doi-org.brum.beds.ac.uk/10.3390/a13030058

AMA Style

Rauh A, Frenkel W, Kersten J. Kalman Filter-Based Online Identification of the Electric Power Characteristic of Solid Oxide Fuel Cells Aiming at Maximum Power Point Tracking. Algorithms. 2020; 13(3):58. https://0-doi-org.brum.beds.ac.uk/10.3390/a13030058

Chicago/Turabian Style

Rauh, Andreas, Wiebke Frenkel, and Julia Kersten. 2020. "Kalman Filter-Based Online Identification of the Electric Power Characteristic of Solid Oxide Fuel Cells Aiming at Maximum Power Point Tracking" Algorithms 13, no. 3: 58. https://0-doi-org.brum.beds.ac.uk/10.3390/a13030058

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