Power System Architecture and Control for Green Hydrogen Production via Power Converter-less Photovoltaic-Electrolyser Integration

TL;DR

This paper introduces a novel power system architecture that directly integrates photovoltaic sources with electrolysers, eliminating converters and using dynamic cell switching for efficient green hydrogen production, validated through MATLAB simulations.

Contribution

It presents a converter-less PV-electrolyser system with dynamic cell switching for optimized hydrogen production, a significant innovation over traditional converter-based systems.

Findings

Achieves maximum power point tracking without power converters.

Demonstrates efficient load management via electrolyser cell switching.

Validates system performance through MATLAB Simulink simulations.

Abstract

This paper proposes a power system architecture and control for efficient and low-cost green hydrogen production. The proposed system integrates photovoltaic (PV) sources directly with an electrolyser stack, thereby eliminating the need for traditional power converters. With the removal of traditional power converters, maximum power point tracking is achieved through dynamic switching of electrolyser cells in the stack, enabling load variation to maintain optimal voltage for maximum power output. The demonstration methodology involves comprehensive MATLAB Simulink analysis of the integrated system performance through controlled PV-electrolyser interactions.