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Energies 2016, 9(5), 332;

Optimal Operation of Combined Photovoltaic Electrolyzer Systems

Electrical and Computer Engineering Department, Florida International University, Miami, FL 33174, USA
Author to whom correspondence should be addressed.
Academic Editor: Wei-Hsin Chen
Received: 25 February 2016 / Revised: 12 April 2016 / Accepted: 18 April 2016 / Published: 30 April 2016
(This article belongs to the Special Issue Hydrogen Production, Separation and Applications)
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In this study, the design and simulation of a combination of a photovoltaic (PV) array with an alkaline electrolyzer is performed to maximize the production of hydrogen as a reliable power resource. Detailed electrical model of PV system, as long as thermal and electrochemical model of electrolyzer is used. Since an electrolyzer is a non-linear load, its coupling with PV systems to get the best power transfer is very important. Solar irradiation calculations were done for the region of Miami (FL, USA), giving an optimal surface slope of 25.7° for the PV array. The size of the PV array is optimized, considering maximum hydrogen production and minimum excess power production in a diurnal operation of a system using the imperialistic competitive algorithm (ICA). The results show that for a 10 kW alkaline electrolyzer, a PV array with a nominal power of 12.3 kW The results show that 12.3 kW photvoltaic system can be utilized for supplying a 10 kW electrolyzer. Hydrogen production and Faraday efficiency of the system are 697.21 mol and 0.3905 mol, respectively. View Full-Text
Keywords: advanced alkaline electrolyzer; hydrogen storage; imperialistic competitive algorithm (ICA); photovoltaic (PV) advanced alkaline electrolyzer; hydrogen storage; imperialistic competitive algorithm (ICA); photovoltaic (PV)

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Khalilnejad, A.; Sundararajan, A.; Abbaspour, A.; Sarwat, A. Optimal Operation of Combined Photovoltaic Electrolyzer Systems. Energies 2016, 9, 332.

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