Experimental assessment of fuel cell/supercapacitor hybrid system for scooters

Sripakagorn, Angkee; Limwuthigraijirat, Nartnarong

doi:10.1016/j.ijhydene.2009.04.059

Cited by 55 publications

(27 citation statements)

References 30 publications

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“…Regarding the hydrogen feeding of the fuel cell, the fuel is 99.99% hydrogen (Typically, a 1460 x 230 mm K size industrial gas cylinder weighs 65kg and holds 7.2 cubic metres of hydrogen (7200 litres), which has to be compressed at 175 bar) with no humidification, and the hydrogen pressure to the stack is normally maintained at around 1.8 barg. LABVIEW software program is installed to provide a graphical user interface to the Nexa power module's operational status and performance [10,11].…”

Section: Proton Exchange Membrane Fuel Cellmentioning

confidence: 99%

Experimental study of using a PEM fuel cell/battery hybrid system to power small UAVs

Omar

2015

WIT Transactions on Ecology and the Environment

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Present fuel cell systems have demonstrated a high degree of efficiency for automotive applications and currently the technology is under consideration for use as the potential power source for Unmanned Aerial Vehicles (UAVs). This paper presents an experimental study that was carried out in order to investigate the performance of the Nexa hybrid system (FC/battery) as the main power source for the PiperCub J3 aircraft. A flight scenario was used to investigate the feasibility of using the Nexa FC/battery hybrid system to satisfy the power requirements of the aircraft, including take-off, climb, cruise, descent and landing. In this study, the electric hybrid system consists of a 1.2kW proton exchange membrane FC, a unidirectional step-down DC/DC converter and two 12V batteries driving an electrical engine. The power delivered to the electrical motor will be from both the FC and battery or from only one of them depending on the power demands. If the battery voltage drops, the FC charges up the batteries at the same time as it delivers power to the motor via converter.

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Section: Proton Exchange Membrane Fuel Cellmentioning

confidence: 99%

Experimental study of using a PEM fuel cell/battery hybrid system to power small UAVs

Omar

2015

WIT Transactions on Ecology and the Environment

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“…However since fuel cell stack has a slow response, using an auxiliary energy storage device such as battery or supercapacitor (SC) is recommended in the fuel cell (FC) applications [1][2][3]. While the battery has a large energy density and SC has a high power density, FC-Battery hybrid and FC-SC hybrid systems offer different features.…”

Section: Introductionmentioning

confidence: 99%

“…Because of charge dependent voltage of SC, a bidirectional DC/DC converter is needed for bidirectional power exchange between SC and other parts of the system for different voltage levels [2][3][4]. Isolated full-bridge converter in Fig.…”

Section: Introductionmentioning

confidence: 99%

Isolated Bidirectional DC–DC Converter for SuperCapacitor Applications

Dehnavi

Sen

Thomsen³

et al. 2024

RE&PQJ

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Abstract. This paper proposes a new bidirectional DC/DC converter for supercapacitor applications. The proposed converter has a parallel structure in supercapacitor side (where voltage is low and current is high) and a series structure in the other side. This structure increases efficiency of the converter. For current sharing in the parallel side of the proposed converter, two different methods are recommended and compared in this paper: Current balancing transformer (CBT) and two separate inductors (TSI). Simulation and experimental results show performance of the proposed converter.

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“…For the passive hybrid system, the DC/DC converter may be installed in the fuel cell line or the battery line without control [9]. However, the output voltage of the DC/DC converter needs to be carefully determined according to the characteristics of both power sources.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on a Passive Fuel Cell/Battery Hybrid Power System

Chen

Lin

2013

Energies

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A laboratory-scale passive hybrid power system for transportation applications is constructed and tested in this study. The hybrid power system consists of a fuel cell stack connected with a diode, a lithium-ion battery pack connected with a DC/DC power converter and another diode. The power converter is employed to regulate the output voltage of the battery pack. The dynamic responses of current and voltage of the stack to the start-up and acceleration of the load are experimentally investigated at two different selected output voltages of the DC/DC converter in the battery line. The power sharing of each power source and efficiency are also analyzed and discussed. Experimental results show that the battery can compensate for the shortage of supplied power for the load demand during the start-up and acceleration. The lowest operating voltage of the fuel cell stack is limited by the regulated output voltage of the DC/DC converter. The major power loss in the hybrid power system is attributed to the diodes. The power train efficiency can be improved by lowering the ratio of forward voltage drop of the diode to the operating voltage of the fuel cell stack.

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Experimental assessment of fuel cell/supercapacitor hybrid system for scooters

Cited by 55 publications

References 30 publications

Experimental study of using a PEM fuel cell/battery hybrid system to power small UAVs

Experimental study of using a PEM fuel cell/battery hybrid system to power small UAVs

Isolated Bidirectional DC–DC Converter for SuperCapacitor Applications

Experimental Study on a Passive Fuel Cell/Battery Hybrid Power System

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