Development of a power supply system for autonomous control and communication devices using hydrogen fuel cells

At the present stage of electric power industry development, special attention is being paid to the development and research of new efficient energy sources. The use of hydrogen fuel cells is promising for remote autonomous power supply systems. The authors of the paper have developed the structure and determined the optimal composition of a hybrid generation system based on hydrogen fuel cells and battery storage and have conducted studies of its operating modes and for remote consumers’ power supply efficiency. A simulation of the electromagnetic processes was carried out to check the operability of the proposed hybrid generation system structure. The simulation results confirmed the operability of the structure under consideration, the calculation of its parameters reliability and the high quality of the output voltage. The electricity cost of a hybrid generation system was estimated according to the LCOE (levelized cost of energy) indicator, its value being 1.17 USD/kWh. The factors influencing the electricity cost of a hydrogen generation system have been determined and ways for reducing its cost identified.

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The Comparative Analysis of the Stratospheric Airship Power Supply System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1008-1009.82 ◽

2014 ◽

Vol 1008-1009 ◽

pp. 82-86

Author(s):

Cui Zhang ◽

Kai Qiao ◽

Lei Wu

Keyword(s):

Fuel Cells ◽

Energy Conversion ◽

Power Supply ◽

Power Supply System ◽

Energy Conversion Efficiency ◽

Supply System ◽

Li Ion Battery ◽

Stratospheric Airship ◽

Li Ion ◽

Solar Batteries

The recycling energy problem is one of the key problems of the Stratospheric Airship. This paper analyzes the “night power supply system” of the Stratospheric Airship combining the energy storage device and its corresponding solar batteries. Compared with the Li-ion battery, Regenerative Fuel Cells have low energy conversion efficiency, resulting that the solar batteries combined with them for “night power supply system” have to be much heavier. Unless the specific energy and energy conversion efficiency of the Regenerative Fuel Cells improve obviously, it will not show much progress compared to Li-ion battery.

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Mathematical Modeling of an Electrotechnical Complex of a Power Unit Based on Hydrogen Fuel Cells for Unmanned Aerial Vehicles

Energies ◽

10.3390/en14216974 ◽

2021 ◽

Vol 14 (21) ◽

pp. 6974

Author(s):

Ivan V. Vasyukov ◽

Alexander V. Pavlenko ◽

Vladimir S. Puzin ◽

Denis V. Batishchev ◽

Irina A. Bolshenko

Keyword(s):

Mathematical Model ◽

Fuel Cells ◽

Fuel Cell ◽

Power Plant ◽

Power Supply ◽

Least Squares Method ◽

Specific Power ◽

Hydrogen Fuel Cells ◽

Hydrogen Fuel ◽

Step Down

The issues of mathematical and numerical simulation of an electrical complex of a power plant based on hydrogen fuel cells with a voltage step-down converter were considered. The work was aimed at developing a mathematical model that would provide for determining the most loaded operation mode of the complex components. The existing mathematical models do not consider the effect of such processes as the charge and discharge of the battery backup power supply on the power plant components. They often do not consider the nonlinearity of the fuel cell output voltage. This paper offers a mathematical model of an electrical complex based on the circuit analysis. The model combines a well-known physical model of a fuel cell based on a potential difference and a model of a step-down converter with a battery backup power supply developed by the authors. A method of configuring a fuel cell model based on the experimental current–voltage characteristic by the least-squares method has been proposed. The developed model provides for determining currents and voltages in all components of the power plant both in the nominal operating mode and in the mode of limiting the power consumed from the fuel cell when the battery backup power supply is being charged. The correctness of the calculated ratios and the mathematical model has been confirmed experimentally. Using the proposed model, a 1300 W power plant with a specific power of 529.3 W∙h/kg was developed and tested.

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