Comparison of thyristor and insulated-gate bipolar transistor -based power supply topologies in industrial water electrolysis applications

Koponen, Joonas; Poluektov, Anton; Ruuskanen, Vesa; Kosonen, Antti; Niemelä, Markku; Ahola, Jero

doi:10.1016/j.jpowsour.2020.229443

Cited by 29 publications

(10 citation statements)

References 23 publications

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“…Koponen pointed out that the calcite type oxide material can greatly reduce the traditional fuel reaction activity range by reducing the polarity resistance of the material, greatly improve the catalytic activity of oxygen at medium and low temperature, and guide the electrode electrolytic gas to the full electrode interface. e material also has excellent oxygen mobility, low coefficient of thermal expansion, abnormal catalytic activity, higher antioxidant substances, and higher resistance [11]. Horikoshi and others systematically summarized the research progress of disulfide key based hydrogen evolution catalysts, compared pure disulfide key, base electrocatalyst and self-supporting electrocatalyst, and analyzed the two ways of active site regulation and improving conductivity.…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Rotating Magnetic Field on Hydrogen Production from Electrolytic Water

Guo

Kim

2022

Shock and Vibration

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In order to reveal the influence of magnetic field on electrochemical machining, a research method of the influence of rotating magnetic field on hydrogen production from electrolytic water is proposed in this paper. Firstly, taking pure water as electrolyte, this paper selects rigid SPCE water molecular model, constructs the molecular dynamics model under the action of magnetic field, and simulates it. In this paper, the thermodynamics, electric power principle, and electrolytic reaction of hydrogen production from electrolytic water are analyzed, and the working processes of alkaline electrolytic cell, solid oxide electrolytic cell, and solid polymer electrolytic cell are analyzed. Based on solid polymer electrolytic cell, the effects of membrane electrode performance, diffusion layer material, contact electrode plate, electrolytic temperature, and electrolyte types on hydrogen production are analyzed. The experimental results show that the heteroions in the lake electrolyte significantly affect the performance of the membrane electrode, and the number of heteroions in the electrolyte should be controlled during the experiment. The hydrogen production capacity and energy efficiency ratio of the unit are basically not affected by different water flow dispersion. When dilute sulfuric acid electrolyte is selected in the experiment, the concentration should be 0.1%–0.2%; After the proton exchange membrane enters the stable period after the activation period, with the increase of the electrolysis time of tap water, (24 h) the membrane electrode will weaken the catalyst activity and reduce the electrolysis efficiency in the electrolysis process. Furthermore, the correctness of rotating magnetic field on hydrogen production from electrolytic water is verified.

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Section: Literature Reviewmentioning

confidence: 99%

Effect of Rotating Magnetic Field on Hydrogen Production from Electrolytic Water

Guo

Kim

2022

Shock and Vibration

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“…Furthernology is mature over PEM electrolyzers, the best performance can be w specific energy consumption, high hydrogen volume rate, and lifewbacks reported concern the low current density (up to 0.7 A•cm−2 yzer bulky) and set production capacity dynamic range (limiting opgenerate hydrogen). The system efficiency is assessed by considering range and the losses from power electronics (around 5%) with the use rs such as thyristors or transistors-based rectifiers [34,35].…”

Section: Strengthsmentioning

confidence: 99%

“…The main drawbacks reported concern the low current density (up to 0.7 A•cm−2 making the electrolyzer bulky) and set production capacity dynamic range (limiting operating conditions to generate hydrogen). The system efficiency is assessed by considering the stack efficiency range and the losses from power electronics (around 5%) with the use of AC-DC converters such as thyristors or transistors-based rectifiers [34,35]. trolyzers have been introduced in the 1960s to compete with alkaline electrolyzers to eliminate some of their disadvantages cited above.…”

Section: Strengthsmentioning

confidence: 99%

A Comprehensive Survey of Alkaline Electrolyzer Modeling: Electrical Domain and Specific Electrolyte Conductivity

et al. 2022

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Alkaline electrolyzers are the most widespread technology due to their maturity, low cost, and large capacity in generating hydrogen. However, compared to proton exchange membrane (PEM) electrolyzers, they request the use of potassium hydroxide (KOH) or sodium hydroxide (NaOH) since the electrolyte relies on a liquid solution. For this reason, the performances of alkaline electrolyzers are governed by the electrolyte concentration and operating temperature. Due to the growing development of the water electrolysis process based on alkaline electrolyzers to generate green hydrogen from renewable energy sources, the main purpose of this paper is to carry out a comprehensive survey on alkaline electrolyzers, and more specifically about their electrical domain and specific electrolytic conductivity. Besides, this survey will allow emphasizing the remaining key issues from the modeling point of view.

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“…This topology achieves great energy efficiency at a low cost with simple control. However, it exhibits high harmonic and reactive power losses that increase the specific energy consumption of the PEM electrolyzer [6,7,8].…”

Section: A) Rectifier Topologiesmentioning

confidence: 99%

“…A similar approach of using transistor-based rectifiers can be applied to PEM electrolysis to assess what improvements can be made with respect to lowering the stack specific energy consumption while improving power quality [4,6]. Chen et al [9] compared the AC power quality at the beginning of the electrolyzer's lifetime with the end-of-life performance of various rectifier topologies.…”

Section: Introductionmentioning

confidence: 99%

Electrolyzer Degradation-Power Electronics One -Way Interaction Model

Mohamed¹,

Keddar²,

Conceicao³

et al. 2022

Preprint

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The water electrolysis process requires a high DC current supply that can sustain the desired hydrogen production rate over a large period of operation at a competitive cost. During the conversion of electricity from AC to DC, power quality may be affected because of the non-linear effect caused by the power electronics. Most of the recent research has focused on exploring different rectifier topologies. None of them have investigated the influence of cell stack degradation on the performance of power electronics. In this work, we built a one-way interaction model to predict the influence of electrolyzer degradation on power electronics output over multiscale operational time (from milliseconds to years) for proton exchange membrane electrolyzer (PEM). In this model, we assume a constant degradation rate on the electrolyzer that results in a linear increase of internal resistance over time. Counterintuitively, rather than the power quality decreasing, results show that the power quality increased with the electrolyzer degradation for both the AC (power factor and THD) and DC side (ripple) for the 6-pulse thyristor. Furthermore, the influence of three variables (degradation rate, load current, and topology) on AC (power factor and THD) and DC (ripple factor) side power output were investigated. Finally, results were partially validated with experimental data from a 20 MW scale PEM electrolyzer.

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Comparison of thyristor and insulated-gate bipolar transistor -based power supply topologies in industrial water electrolysis applications

Cited by 29 publications

References 23 publications

Effect of Rotating Magnetic Field on Hydrogen Production from Electrolytic Water

Effect of Rotating Magnetic Field on Hydrogen Production from Electrolytic Water

A Comprehensive Survey of Alkaline Electrolyzer Modeling: Electrical Domain and Specific Electrolyte Conductivity

Electrolyzer Degradation-Power Electronics One -Way Interaction Model

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