scholarly journals Design and experimental validation of a high voltage ratio DC/DC converter for proton exchange membrane electrolyzer applications

2019 ◽  
Vol 44 (14) ◽  
pp. 7059-7072 ◽  
Author(s):  
Stefania Maria Collura ◽  
Damien Guilbert ◽  
Gianpaolo Vitale ◽  
Massimiliano Luna ◽  
Francesco Alonge ◽  
...  
Keyword(s):  
High Voltage ◽  
Proton Exchange Membrane ◽  
Experimental Validation ◽  
Proton Exchange ◽  
Voltage Ratio ◽  
Exchange Membrane

Low-Voltage Hydrogen Peroxide Electrolyzer for Highly Efficient Power-to-Hydrogen Conversion

2021 ◽  
Author(s):  
Ruimin Ding ◽  
Chang Liu ◽  
Jie Yang ◽  
Shanshan Liu ◽  
Qinchao Xu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
High Voltage ◽  
Proton Exchange Membrane ◽  
Low Voltage ◽  
Cell Voltage ◽  
Proton Exchange ◽  
Voltage Range ◽  
Highly Efficient ◽  
Efficient Power ◽  
Exchange Membrane

Power-to-hydrogen conversion in a proton exchange membrane (PEM) water electrolyzer requires costly iridium-based catalysts and high voltage to overcome the energy barrier of the oxygen evolution reaction. Here, we demonstrate a highly efficient PEM hydrogen peroxide electrolyzer toward power-to-hydrogen conversion for onsite hydrogen production and energy storage. This design utilizes the facile hydrogen peroxide oxidation reaction (HPOR), significantly reducing the anode potential and cell voltage. Using iridium-free HPOR catalysts, the hydrogen peroxide electrolyzers work at a remarkably low-voltage range (0.8 to 1.2 V) with extremely high voltage efficiency up to 87% and low electric power consumption (ca. 24.8 to 32.3 kWh/kgH2), paving the way for the development of hydrogen economy based on the electrochemical cycle of hydrogen peroxide.

scholarly journals Modeling, Analysis and Experimental Validation of the Fuel Cell Association with DC-DC Power Converters with Robust and Anti-Windup PID Controller Design

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1889
Author(s):  
Fatima Zahra Belhaj ◽  
Hassan El Fadil ◽  
Zakariae El Idrissi ◽  
Mohamed Koundi ◽  
Khawla Gaouzi
Keyword(s):  
Fuel Cell ◽  
Pid Controller ◽  
Proton Exchange Membrane ◽  
Experimental Validation ◽  
Closed Loop ◽  
Power Converters ◽  
Proton Exchange ◽  
Closed Loop System ◽  
Dc Power ◽  
Exchange Membrane

Based on full and rigorous study, this paper addresses the issue of ensuring a feasible association in practice between a Proton Exchange Membrane Fuel Cell (PEMFC) and DC-DC power converters including a buck and boost converter. This association is mathematically modeled, analyzed, and controlled by an optimal PID controller. Using absolute stability tools with a rigorous analytical approach that takes into consideration windup effects, in addition to the nonlinear behavior of the Proton Exchange Membrane Fuel Cell, sufficient conditions are provided to ensure that the closed-loop system is L2-stable. These conditions allow the optimal PID controller parameters to be chosen and ensure the closed-loop system stability, by tracking reference outputs, and an optimal performance against perturbations. Formal analysis, numerical simulations, and experimental validation were carried out to verify that the PID controller designed with an anti-windup action is robust and meets all of the pre-defined objectives. Moreover, this study demonstrates that the association between the PEMFC and the DC-DC converters is achieved if only certain conditions are met.

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