Abstract
A stand-alone renewable photovoltaic energy system can be used to meet the energy requirements of off-grid remote area applications. The excess photovoltaic energy with respect to load demand is transformed and stored as hydrogen gas via an electrolyzer. The stored hydrogen represents a long-term transportable form of fuel for fuel cell. To analyze the system performance and design the control strategy, it is necessary to develop a system model for the solar powered hydrogen production process. The operational characteristics of the photovoltaic array, the proton exchange membrane water electrolyzer (PEMWE), and the power converters are investigated. The maximum power output of the photovoltaic array is matched to the operating voltage of the PEMWE by the DC-DC converters. Simulation results of the PV-PEMWE hydrogen production process are discussed.
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