Power struggle [power supplies for portable equipment]

Ross, D.P.

doi:10.1049/ir:20030705

Cited by 12 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fuel cells are making their mark in the world of telecommunications, ushering in a new era of extended battery life for mobile phones and laptops. Tech giants like Samsung, Panasonic, Sanyo, Sony, Toshiba, and Motorola are leading the way in fuel cell-powered communication equipment (Ross, 2003). This advancement means that mobile phones can now operate for twice as long as their lithium battery counterparts.…”

Section: Micro Power Applicationsmentioning

confidence: 99%

Efficiency Analysis of Hydrogen Fuel Cell Power Systems for Off-Grid Applications

Ozigi,

Odia,

Amiebenomo

2023

IJEATS

View full text Add to dashboard Cite

The escalating environmental hazards associated with the use of fossil fuels call for eco-friendly alternative renewable energy conversion sources. One of these renewable energy measures is the development of a hydrogen fuel cell, a device which directly converts the potential of chemical fuel into electrical power without combustion. This study evaluates the efficiency of a hydrogen fuel cell power system for off-grid applications with an aim to show how much energy can be generated from a locally produced hydrogen powered device, and for how long an electrical load (1Ω resistor) in the form of bulbs of varying loading sizes is carried. For the power and performance evaluation of the cell, multimeters equipped with integrated voltmeters and ammeters were employed for their accuracy, with a power generator, functioning through a rectifier, supplying a direct current of 3.45A at a known voltage of 18.2V, providing the means to calculate the energy input into the developed fuel cell. The results assessments, revealed that power levels steadily fall as time progresses, an occurrence caused by the depletion of reactants and the continuous accumulation of reaction products, which ultimately lead to decreasing electrochemical activity and subsequently decreased power generation. The graph readings show the dynamic behaviour of the fuel cell's performance depicted by the distinct pattern followed in the relationship between time and power output.

show abstract

Section: Micro Power Applicationsmentioning

confidence: 99%

Efficiency Analysis of Hydrogen Fuel Cell Power Systems for Off-Grid Applications

Ozigi,

Odia,

Amiebenomo

2023

IJEATS

View full text Add to dashboard Cite

show abstract

“…Specifically, proton exchange fuel cells (PEFCs), are some of the best alternatives for stationary and portable applications [16]. PEFCs have higher energy density with lower volume and weight than other types of fuel cells, and they are commercially available at a larger power range [13]; from a few kW useful in mobile applications [17], to thousands of kW in microgrid and stationary applications [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Intelligent Modelling in Renewable Energy Sources-Based Microgrid. A Variable Estimation of the Hydrogen Subsystem Oriented to the Energy Management Strategy

et al. 2020

View full text Add to dashboard Cite

This work deals with the prediction of variables for a hydrogen energy storage system integrated into a microgrid. Due to the fact that this kind of system has a nonlinear behaviour, the use of traditional techniques is not accurate enough to generate good models of the system under study. Then, a hybrid intelligent system, based on clustering and regression techniques, has been developed and implemented to predict the power, the hydrogen level and the hydrogen system degradation. In this research, a hybrid intelligent model was created and validated over a dataset from a lab-size migrogrid. The achieved results show a better performance than other well-known classical regression methods, allowing us to predict the hydrogen consumption/generation with a mean absolute error of 0.63% with the test dataset respect to the maximum power of the system.

show abstract

“…Por ejemplo, en aplicaciones estacionarias, las pilas de combustible pueden conectarse a la red eléctrica (Moreira and da Silva, 2009), instalarse como generadores separados (Kirubakaran et al, 2009), u operar en vertederos y plantas de tratamiento de aguas residuales (Paska et al, 2009). Su uso también es interesante en aplicaciones de transporte, debido a la escasez de combustibles fósiles y sus escasos efectos contaminantes (Bertoluzzo and Buja, 2011;De las Heras et al, 2018b), o sobre otro tipo de estaciones móviles (Ross, 2003).…”

Section: Introductionunclassified

Sistema híbrido inteligente para la predicción de la tensión de una pila de combustible basada en hidrógeno

Casteleiro‐Roca

Barragán

Segura

et al. 2019

Rev. iberoam. autom. inform. ind.

View full text Add to dashboard Cite

<p>Por razones de sostenibilidad y estrategia energética, entre otras, existe en la actualidad una tendencia clara hacia el uso de nuevas formas de obtención, almacenamiento y gestión de energía, más eficientes y con un carácter eminentemente sostenible. Con este fin, se está investigando sobre sistemas de almacenamiento de energía; de los que uno de los más prometedores, en lo que a capacidad y movilidad se refiere, es el basado en hidrógeno. En el presente trabajo se obtiene un modelo para predecir el comportamiento dinámico de una pila de combustible alimentada por hidrógeno, lo cual permitirá mejorar su control entre otras aplicaciones. Las variables usadas en esta investigación se han extraído de un banco de pruebas real, donde se monitoriza una pila de combustible mientras se producen variaciones en una carga programable conectada a la salida de la misma. Para realizar este modelado se opta por estudiar la implementación de un modelo híbrido basado en técnicas de agrupamiento y, posteriormente, técnicas inteligentes de regresión con redes neuronales artificiales sobre cada uno de los grupos. La propuesta se ha probado con dos conjuntos de datos de validación, consiguiendo resultados altamente satisfactorios.</p>

show abstract

Power struggle [power supplies for portable equipment]

Cited by 12 publications

References 0 publications

Efficiency Analysis of Hydrogen Fuel Cell Power Systems for Off-Grid Applications

Efficiency Analysis of Hydrogen Fuel Cell Power Systems for Off-Grid Applications

Hybrid Intelligent Modelling in Renewable Energy Sources-Based Microgrid. A Variable Estimation of the Hydrogen Subsystem Oriented to the Energy Management Strategy

Sistema híbrido inteligente para la predicción de la tensión de una pila de combustible basada en hidrógeno

Contact Info

Product

Resources

About