Combined maximum power point tracking and output current control for a photovoltaic-electrolyser DC/DC converter |
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| Affiliation: | 1. ENEA-Materials Chemistry and Technology Lab., Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy;2. University of Rome “La Sapienza”, Department of Chemical Engineering, Materials & Environment, Via Eudossiana 18, 00184 Rome, Italy;3. CNR – National Research Council, Institute of Nanostructured Materials, Chemistry Department, P.le Aldo Moro 5, 00185 Rome, Italy;1. Centre de Développement des Energies Renouvelables, CDER, BP 62, route de l''observatoire, Bouzareah 16340, Algiers, Algeria;2. CEVITAL, Birmouradreis, Algiers, Algeria;3. Université Saad Dahleb Blida, Soumaa, Blida, Algeria;1. Research Group in Electrical Technologies for Sustainable and Renewable Energy (PAIDI-TEP-023), Department of Electrical Engineering, University of Cadiz, 11202, EPS Algeciras, Algeciras (Cadiz), Spain;2. Research Group in Research and Electrical Technology (PAIDI-TEP-152), Department of Electrical Engineering, University of Jaen, 23700, EPS Linares, Linares (Jaen), Spain |
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| Abstract: | This paper covers the design and the implementation of the control strategy of a DC/DC converter aimed for hydrogen production from photovoltaic sources. This control scheme provides tight control of the injected current to the electrolyser and, if required, maximum power point tracking of the photovoltaic source, by means of two independent external control loops. The two outer loops create a reference signal for an inner control loop, which adjusts the duty cycle of the DC/DC converter and sets the output inductor current to the desired value. Embedded design, which includes analog and digital electronics, has been considered for the practical implementation. Converter and control loop modelling, simulation and experimental validation are discussed in this work. |
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| Keywords: | Photovoltaic energy Electrolyser DC/DC converter control Current control Input voltage control Maximum power point tracking |
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