Optimised hydrogen production by a photovoltaic - Electrolysis system DC/DC converter and water-flow controller

In this article, we borrowed a new path for hydrogen production by adapting the electrolysis to a renewable source such as photovoltaic (PV) to generate the maximum hydrogen. A complete modeling of the PV-electrolysis system was developed in Matlab/Simulink environment. A proton exchange membrane (PEM) electrolysis is connected to the PV system via a DC/DC Buck converter with a maximum power point tracking (MPPT) control which allows the maximization of the power transferred to the electrolysis and controls the injected water flow in the electrolysis. Simulation results show firstly as control of water flow that enters electrolysis depends on power variations caused by weather changes. On the other hand, the use of a DC/DC buck converter having a MPPT control allows a better adaptation between the PV array and electrolysis. This leads to an optimal functioning photovoltaic-electrolysis system and therefore a maximum hydrogen production.