An experimental and modelling study of a photovoltaic/proton-exchange membrane electrolyser system

Atlam, Özcan

doi:10.1016/j.ijhydene.2009.05.147

Cited by 41 publications

(13 citation statements)

References 13 publications

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“…In addition, there is a difference between theoretical and experimental currents for the same hydrogen production and it is due to hydrogen leakage in the electrolyzer system. This can be incorporated in Faraday efficiency calculations [15]. The slope of the current versus hydrogen production rate characteristic yields a hydrogen production coefficient of current variation.…”

Section: Resultsmentioning

confidence: 99%

“…The slope of this corresponds to the internal electrical resistance of the PEM electrolyzer system during electrolysis. This approach is applied and tested in reference [15] with very low relative errors.…”

Section: Pem Electrolyzer Modelingmentioning

confidence: 99%

“…On the other hand, the ideal potential V i in fundamental electrochemistry for the electrolysis, is defined by the (4) [15][16][17][18] …”

Section: Pem Electrolyzer Modelingmentioning

confidence: 99%

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Empirical electrical modeling for a proton exchange membrane electrolyzer

Kolhe

Atlam

2011

2011 International Conference on Applied Superconductivity and Electromagnetic Devices

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The hydrogen (H 2 ) economy is a proposal for the distribution of energy using hydrogen as an energy carrier (due to its high mass energy density) for reducing green house gas emissions. Energy conversion from renewable energy (RE) sources with suitable energy storage can play an important role in the development and operation of RE systems. The integrated intermittent RE system, (e.g. wind, solar energy systems) based on energy storage in the form of electrolytic H 2 , is considered a promising alternative to overcome the intermittence of the RE sources. In comparison to commonly used battery storage, H 2 is well suited for seasonal storage applications due to its inherent high mass energy density. PEM based electrolysis has many advantages as compared to conventional alkaline based electrolysis e.g. smaller dimension and mass, lower power consumption, intrinsic ability to cope with transient electrical power variations, high degree of purity of gases and possibility of getting H 2 compressed at higher pressure within the unit and more safety level. In this work, PEM electrolyzer model has been developed. Input current-voltage (I-V) characteristic of electrolyzer has been modeled by using the experimental analysis under steady state conditions at room temperature. The model is developed by using electrical equivalent circuit topology by considering useful power conversion and losses. Electrolytic H 2 production rates are found out with respect to the input current and power. These experimental results are verified with the theoretical results and the relative errors are < 2%. The electrolytic H 2 production rate increases linearly with current, but variation of electrolytic H 2 production rate with the input electrical power is nonlinear (i.e. logarithmic). These are verified through the developed model also. This model will help to analyze energy system behavior where is stored in the electrolytic H 2 form. Keywords-energy storage; electrolytic hydrogen; PEM electrolyzerI.

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Section: Resultsmentioning

confidence: 99%

Section: Pem Electrolyzer Modelingmentioning

confidence: 99%

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Empirical electrical modeling for a proton exchange membrane electrolyzer

Kolhe

Atlam

2011

2011 International Conference on Applied Superconductivity and Electromagnetic Devices

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“…In particular, highly effective environmentally friendly proton exchange membrane (PEM) water electrolyzers have been successfully integrated with plants producing electric power using renewable energy sources [4][5][6][7]. Because higher current density capabilities are desirable for hydrogen production using unstable renewable energy sources, such as solar and wind, active research has also focused on the set-up and operation of an integrated hydrogen production system consisting of a PEM electrolyzer and a photovoltaic and/or wind power source [8][9][10][11]. To date, most of the research and development on water electrolysis related to renewable hydrogen production projects have focused on alkaline electrolysis systems and PEM electrolyzers.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Model of Water Electrolysis for Prediction of Dynamic Characteristics of Cooling System

Yun¹,

Yun²,

Hwang³

2021

KHNES

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The effects of temperature and flow rate are studied analytically and experimentally to develop a proton exchange membrane (PEM) electrolyzer with satisfactory performance for use in a regenerative fuel cell system. The dynamic interactions in the electrolyzer are simulated with Simulink ® to include five ancillaries: anode, cathode, membrane, voltage and storage. To validate the analytical polarization curve, the performance of the PEM electrolyzer has been assessed in terms of power, flow rate and temperature controllers. The four circulating water flow fields in the electrolyzer are experimentally evaluated using a small cell with an active area of 25 cm 2 . By comparing the analytical and experimental polarization curves at various temperatures, the optimum temperature and flow field for water electrolysis are presented. At the optimum temperature and flow field, the hydrogen and oxygen production rates are obtained for various water flow rates. These analytical and experimental results will be applied to the controls of temperature and flow rate of the PEM electrolyzer for the regenerative fuel cell system.

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“…The indirect coupling system consists of a PV cell, an electrolyzer, a DC converter, a fuel tank as well as a battery, but it requires more auxiliary devices, higher investment and larger maintenance costs. Therefore, more and more attention have focused on the direct coupling approach , . Some scholars have evaluated the direct coupling system performance characteristics at a system level , and at a small‐scale level , .…”

Section: Introductionmentioning

confidence: 99%

A New Direct Coupling Method for Photovoltaic Module‐PEM Electrolyzer Stack for Hydrogen Production

et al. 2018

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A direct coupling hydrogen production system consisting of a photovoltaic (PV) cell and a proton exchange membrane (PEM) electrolyzer is established. The expression of the hydrogen production efficiency is derived and the general performance characteristics are revealed. The number of series‐parallel connected PV cell is optimized using the hydrogen production effficiency of the system as objection function. The maximum efficiency and the corresponding optimal values of the number of series‐parallel connected PV cell are obtained. In contrast to optimize the number of series‐parallel connected electrolyzer, a simple and efficent method is proposed. The effects of some important performance parameters, such as types of the solar cells, solar irradiance, and leakage resistance of the electrolyzer stacks on the hydrogen production efficiency of the direct coupling system are examined in detail. It is found that the proposed optimal coupling approach can efficiently improve the hydrogen production efficiency. Moreover, the maximum hydrogen production efficiency of the direct coupling system using the Si solar cell is higher than that of the one using the GdTe and AsGa solar cells. Finally, the hydrogen production efficiency increases as the leakage resistance increases.

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An experimental and modelling study of a photovoltaic/proton-exchange membrane electrolyser system

Cited by 41 publications

References 13 publications

Empirical electrical modeling for a proton exchange membrane electrolyzer

Empirical electrical modeling for a proton exchange membrane electrolyzer

Dynamic Model of Water Electrolysis for Prediction of Dynamic Characteristics of Cooling System

A New Direct Coupling Method for Photovoltaic Module‐PEM Electrolyzer Stack for Hydrogen Production

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