Open AccessSupercapacitor‐assisted LED (SCALED) technique for renewable energy systems: a very low frequency design approach with short‐term DC‐UPS capability eliminating battery banks
Author(s) -
Jayananda Dilini,
Kularatihal,
SteynRoss David Alistair
Publication year - 2020
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2019.1307
Subject(s) - supercapacitor , microgrid , energy storage , battery (electricity) , electrical engineering , maximum power transfer theorem , impedance matching , renewable energy , electronic engineering , power (physics) , computer science , electrical impedance , engineering , capacitance , electrode , physics , quantum mechanics
The fluctuating nature of solar energy necessitates suitable energy storage systems. Compared to typical battery banks, supercapacitors offer longer cycle life eliminating the need to replace them regularly. However, compared to a typical maximum power point tracking controller, where the battery bank and resistive load fed by a switch‐mode DC–DC converter allows impedance matching for maximum power transfer, a supercapacitor bank's significantly large capacitive load does not permit the typical impedance matching for maximum power transfer. This study compares the theoretical difference between battery versus supercapacitor energy storage, and highlights of the supercapacitor‐assisted LED converter technique in achieving high‐efficiency renewable energy‐based DC‐microgrid systems.