A designer's view on non-traditional supercapacitor techniques for sustainable energy applications

Kularatna, Nihal; Steyn-Ross, D. Alistair; Milani, Kaveh

doi:10.1109/isie.2016.7745021

Cited by 2 publications

(3 citation statements)

References 19 publications

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“…Kularatna responded positively, with a plan to implement some experiments connecting ultracapacitors to part of a structure's lightning protection system. It is not known whether these were undertaken, but he is active in supercapacitor design for sustainable energy applications (Kularatna et al, 2016). See Table 8 for a comparison of supercapacitor and typical electrolytic capacitor properties.…”

Section: Supercapacitorsmentioning

confidence: 99%

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Lightning for Energy and Material Uses: A Structured Review

Helman¹

2020

Preprint

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The average atmospheric charge density of Earth is neutral. Charge built up from thunderstorms and lightning phenomena is offset by oceanic surface charging, and offers a source of energy that has not been harnessed broadly. Unfortunately, the total terrestrial energy of the Earth’s atmospheric electrical system is modest (250–500 MW) compared to industrial requirements: Innovations are likely to offer improvements to societal efficiency rather than broad transformations. Direct capture systems located in places with very high occurrence of lightning discharge can generate ≈1 kWh per year on average. Material processing via triggered lightning is limited to techniques that utilize rapid discharges, e.g., metal and glass preprocessing of materials, waste volume reduction, biomass energy conversion, where current prices make plasma‐arc processes prohibitive. Triggered lightning may be used to assist blasting of mountain rock; or as a high‐voltage input for processes such as nuclear fusion. Passive collection of atmospheric electricity is modest but may be used in urban agriculture to increase biomass production. Thunderstorm charge‐separation processes suggest a new class of electricity generators based on kinetic energy and material collision. Ball lightning suggests additional research in dusty plasmas. These methods are all at proof‐of‐concept or early translation stages.

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Section: Supercapacitorsmentioning

confidence: 99%

“…Comparison of Properties of Typical Electrolytic Capacitors and Supercapacitors(Kularatna et al, 2016) Pre-print. This is a non-final version of an article published in final form inHelman, D. S. (2020).…”

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confidence: 99%

Lightning for Energy and Material Uses: A Structured Review

Helman¹

2020

Preprint

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“…The second half of the inverter is fed by an input dc source in series with the discharged SC banks. The output voltage of the overall system is determined by the series-connected outputs of the smaller inverters [23,24].…”

Section: Sc-assisted High-density Invertermentioning

confidence: 99%

Potential of supercapacitors in novel power converters as semi-ideal lossless voltage droppers

Ariyarathna

Jayananda

Kularatna

et al. 2017

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

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Abstract-Electrical physics text book theory tells us that charging a capacitor is much less efficient than replenishing the energy in a discharged electro-chemical battery. If a fully discharged capacitor is pumped with a charge of Q coulombs, it stores 1 2 QV 2 while dissipating the same amount of energy in the loop resistance. However, if the same charge is pumped into a re-chargeable electrochemical cell of voltage V the energy stored in the cell is QV , while the wasted energy is determined by the loop resistance and the voltage difference across the resistance. If a rechargeable battery pack is to be replaced by a supercapacitor module, this difference could seriously affect the design of power converters required, since the power converter should stop charging at a certain point to avoid overcharging the capacitor bank. However, if a useful resistive load such as heater, DC-DC converter, inverter or a lamp load is used as a part of the loop resistance in a capacitor charging loop, a significant part of this loss can be recovered. One example of this is in the supercapacitor assisted low drop-out regulator (SCALDO) technique. This paper will detail the concept of circumvention of RC loop charging loss, theoretically quantifying the same in a generalized circuit, demonstrating how this can be applied in completely novel circuit topologies such as the supercapacitor assisted LED (SCALED) converter. The paper will provide experimental results of selected SCALDO implementations and early results of SCALED technique to support this theory.

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A designer's view on non-traditional supercapacitor techniques for sustainable energy applications

Cited by 2 publications

References 19 publications

Lightning for Energy and Material Uses: A Structured Review

Lightning for Energy and Material Uses: A Structured Review

Potential of supercapacitors in novel power converters as semi-ideal lossless voltage droppers

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