Assessing sizing optimality of OFF-GRID AC-linked solar PV-PEM systems for hydrogen production

• DOI: 10.1016/j.ijhydene.2022.06.098
• Publication Date: 2022-07-07T11:55:32Z
• Authors: Felipe Gallardo; José García; Andrea Monforti F...; Gabriele Comodi; Justin NW. Chiu
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; Solar hydrogen; 02 engineering and technology; Energy Systems; 7. Clean energy; Techno-economic analysis; Energisystem

Herein, a novel methodology to perform optimal sizing of AC-linked solar PV-PEM systems is proposed. The novelty this work the proposition plant electrolyzer capacity ratio (AC/AC ratio) as optimization variable. impact AC/AC on Levelized Cost Hydrogen (LCOH) and deviation DC/AC when optimized specifically for hydrogen production are quantified. Case studies covering Global Horizontal Irradiation (GHI) range 1400–2600 kWh/m2-year assessed. obtained LCOHs between 5.9 11.3 USD/kgH2 depending location. found strongly affect cost, LCOH optimality while varies up 54% minimize cost instead energy only. Larger oversizing required low GHI locations; however, H2 more sensitive ratios high locations.