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

Dahbi, Sanae; Aziz, Azlina Abdul; Benazzi, Naima; Elhafyani, Mohamed Larbi

doi:10.1109/irsec.2015.7455129

Cited by 7 publications

(10 citation statements)

References 17 publications

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“…In the European Union, the Clean Hydrogen in European Cities programme was adopted, which envisages the use of hybrid buses operating on hydrogen fuel for urban transport [38,39]. Nevertheless, we should not forget about the significant disadvantages of this type of transport, namely a mixture of hydrogen and air is explosive, special tanks are needed for storing and transporting hydrogen that ensure high pressure (35 MPa and 70 MPa), they are more difficult and expensive (10-100 times than ICE) in maintenance, a network of special filling stations is needed for filling with hydrogen, hydrogen is difficult to keep in liquid form (it has the highest volatility among gases), and the process of hydrogen production is energy-consuming [13,14]. Considering the enumerated shortcomings, electrobuses and hybrid buses look like more promising.…”

Section: Resultsmentioning

confidence: 99%

“…The simplest way to produce hydrogen is by electrolysis. However, to generate hydrogen in this way, you need to spend 4 kW of electricity to produce about 1 м3 of hydrogen, which, after it burns, will give only 1.8 kW [13,14].…”

Section: Fuel Cell Electrobusmentioning

confidence: 99%

“…However, it should be noted that buses on fuel cells are a technologically sophisticated type of equipment. Its fuel is hydrogen, which, is the most common element on Earth, does not exist in its pure form (only in chemical compounds) and the processes of its extraction and storage are quite energy-intensive [13,14]. The most modern and popular typeof urban public transport at the moment is hybrid buses and electrobuses, which actually reflected in the sources [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Energy saving technologies for urban bus transport

Hnatov¹,

Arhun²,

Ponikarovska³

2017

Int. J. Automot. Mech. Eng.

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Reduction of non-renewable sources of energy and the ecological state of metropolises have become the cause of the search for optimal solutions for introduction of energyefficient and environmentally friendly technologies for urban bus transport, which is the purpose of this work. A review of environmentally friendly buses has shown that electric buses (electrobuses) are the most perspective. However, rapid replacement of all the buses with electrobuses is impossible because of their high cost. A comparative analysis of the operating costs of different types of buses of the same destination and class has been carried out in order to choose the optimal variant. Thus, one route of 4.23 km in length was chosen in Kharkiv (Ukraine). Experimental and calculated data showed that a minibus converted into an electrobus is the most acceptable means for urban passenger transportation. Ultra-capacitors are suggested as an energy source. The conceptual diagram of the model of such a bus is presented and the technical requirements for its components are determined. The data and proposals are useful for Ukraine and for countries with low economic development that cannot quickly replace old diesel buses with new, environmentally friendly, electrobuses. The results of this work are the basis for further research and development.

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Section: Resultsmentioning

confidence: 99%

Section: Fuel Cell Electrobusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy saving technologies for urban bus transport

Hnatov¹,

Arhun²,

Ponikarovska³

2017

Int. J. Automot. Mech. Eng.

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“…In a study by Tebibel (2017), researchers investigated the hydrogen production using an off grid PV electrolyser system by analyzing the effect of PV array, tilt angle and battery DoD where the developed mathematical model of the system was also used. Dahbi et al (2016) investigated a PV electrolyser system using the Simulink tool in MATLAB software in order to maximize the hydrogen production by considering the proportionality among the water flow, electrical power of PV system and the hydrogen production.…”

Section: Hydrogen Production Methodsmentioning

confidence: 99%

Computational intelligence approach for modeling hydrogen production: a review

Ardabili

Najafi

Shamshirband

et al. 2018

Engineering Applications of Computational Fluid Mechanics

135

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Hydrogen is a clean energy source with a relatively low pollution footprint. However, hydrogen does not exist in nature as a separate element but only in compound forms. Hydrogen is produced through a process that dissociates it from its compounds. Several methods are used for hydrogen production, which first of all differ in the energy used in this process. Investigating the viability and exact applicability of a method in a specific context requires accurate knowledge of the parameters involved in the method and the interaction between these parameters. This can be done using top-down models relying on complex mathematically driven equations. However, with the raise of computational intelligence (CI) and machine learning techniques, researchers in hydrology have increasingly been using these methods for this complex task and report promising results. The contribution of this study is to investigate the state of the art CI methods employed in hydrogen production, and to identify the CI method(s) that perform better in the prediction, assessment and optimization tasks related to different types of Hydrogen production methods. The resulting analysis provides in-depth insight into the different hydrogen production methods, modeling technique and the obtained results from various scenarios, integrating them within the framework of a common discussion and evaluation paper. The identified methods were benchmarked by a qualitative analysis of the accuracy of CI in modeling hydrogen production, providing extensive overview of its usage to empower renewable energy utilization.

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“…The converters can be controlled by pulse width modulation (PWM) [2][3][4][5][6][7] or resonant switching techniques [8][9][10][11][12][13]. The studies on DC-DC converters usually aim at improving efficiency and reducing cost and volume [14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production system with fuzzy logic-controlled converter

Nacar¹,

Öncü²

2019

Turk J Elec Eng & Comp Sci

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Electrolyte current must be controlled in the water electrolysis systems. For this purpose, the power converter for the cell stack of the electrolyzer used in industrial hydrogen production is realized. A series resonant converter, which is suitable for high input voltage and low output current applications, is used as power stage of the electrolyzer. The high-frequency transformer is used for the impedance matching. While the system is running, the electrical resistance of the electrolyzer changes continuously; thus, fuzzy logic controller (FLC) is used to control the output current of the power converter. In this study, a 700-W converter prototype is designed and controlled by the frequency modulation technique in the range of 290-360 kHz. The converter is tested for different output currents and it is observed that the power switches are turned on under soft switching conditions while FLC closely follows reference inputs.

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

Cited by 7 publications

References 17 publications

Energy saving technologies for urban bus transport

Energy saving technologies for urban bus transport

Computational intelligence approach for modeling hydrogen production: a review

Hydrogen production system with fuzzy logic-controlled converter

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