Operating principles of the ultracapacitor

Bullard, G.L.; Sierra-Alcazar, H.B.; Lee, H.L.; Morris, Josh

doi:10.1109/20.22515

Cited by 112 publications

(23 citation statements)

References 2 publications

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“…From the position of an energy storage device on this plot, it is possible to gauge the ability of the device to store energy for long durations of time (high energy density) against their ability to provide a large amount of energy in a short duration when required (high power density). Supercapacitors are placed between capacitors and batteries on the Ragone plot [27], indicating that they have the advantage of higher power density than batteries as well as higher energy [21] density than ordinary capacitors [28]. They do not undergo irreversible chemical reactions [31], thus they have of the order of millions of charge cycles [32].…”

Section: A Supercapacitorsmentioning

confidence: 99%

Reincarnation in the Ambiance: Devices and Networks with Energy Harvesting

Prasad

Devasenapathy

Rao

et al. 2014

IEEE Commun. Surv. Tutorials

101

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Abstract-Miniaturization of devices with higher computational capacity coupled with advancement in communication technologies is driving the growth of deployment of sensors and actuators in our surroundings. To keep up the pace with this growth, these tiny, battery-powered devices need small-sized and high-energy density batteries for longer operation time, which calls for improvement in battery technologies. An alternative is to harvest energy from the environment. An important aspect of energy harvesting is that the devices go through birth and death cycle with respect to their power unlike battery powered ones. Another important aspect is that context information is also generated while devices harvest energy from their ambiance. In this article we provide a comprehensive study of various types of energy harvesting techniques. We then provide some models used in energy harvesting systems and the design of such systems. We also throw light on the power management and networking aspects of the energy harvesting devices. At the end we discuss the major issues and avenues for further research.

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Section: A Supercapacitorsmentioning

confidence: 99%

Reincarnation in the Ambiance: Devices and Networks with Energy Harvesting

Prasad

Devasenapathy

Rao

et al. 2014

IEEE Commun. Surv. Tutorials

101

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“…Ultracapacitors (also known as supercapacitors) are double layer capacitors that increase energy storage capability due to a large increase in surface area through use of a porous electrolyte (they still have relatively low permittivity and voltage-withstand capabilities) [15].…”

Section: Advanced Capacitorsmentioning

confidence: 99%

Energy storage systems for advanced power applications

et al. 2001

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“…A rechargeable battery weights more than double of a SC of the same size because battery stores energy by chemical reactions, it will generally take much longer to recharge. SC can be charged for 60 % to 80 % in just 30 to 60 s. Rechargeable batteries have about 500 to 1000 life cycles as explained by Bullard (1989). On the other hand, SC can undergo charging discharging cycles for more than 1 million times without any reduction of its energy storage capacity.…”

Section: Super Capacitor Energy Storage (Sces)mentioning

confidence: 99%

Application of energy storage devices in power systems

Gupta¹,

Nigam²,

Gupta

2011

Int. J. Eng. Sci. Tech

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In Electric Power systems, power quality has been one of the issues of increasing interests. Energy storage does not mean just the energy sources but they also provide the added benefits of improving power quality, dynamic and transient stability and also the reliability of the supply. Some of the major disadvantages in electric power supply system have been flickering and deviations in power supply which make some of the electronic equipments and domestic devices highly sensitive to it. To avoid such problems we need to find out devices that can provide a backup during the time of voltage sags and such deviations. The paper concentrates on performance benefits of adding energy storage to power electronic compensators for utility applications. The paper concerns on analysis of various energy storage devices on the basis of different parameters out of which Superconducting magnetic energy storage technology and Super capacitor energy storage has become an alternative for conventional solutions with negligible losses. Flywheel is used for non polluting uninterruptible power supply. For large scale storage, Underground thermal, Compressed air and Pumped hydrogen are preferred but it is difficult to compare all these devices as none of them are optimal for all applications.

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Operating principles of the ultracapacitor

Cited by 112 publications

References 2 publications

Reincarnation in the Ambiance: Devices and Networks with Energy Harvesting

Reincarnation in the Ambiance: Devices and Networks with Energy Harvesting

Energy storage systems for advanced power applications

Application of energy storage devices in power systems

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