Optimization of Supercapacitor Assisted Surge Absorber (SCASA) Technique: A New Approach to Improve Surge Endurance Using Air-Gapped Ferrite Cores

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dc.contributor.authorKularatna N
dc.contributor.authorSteyn-Ross DA
dc.contributor.authorSilva Thotabaddadurage, Dr. Sadeeshvara
dc.date.accessioned2022-05-12T00:02:43Z
dc.date.available2022-05-12T00:02:43Z
dc.date.issued2021en
dc.date.updated2022-02-16T21:50:45Z
dc.description.abstractSCASA is a patented technique commercialized as a surge protector device (SPD) that adheres to UL-1449 test standards. Apart from the novel use of supercapacitors, SCASA design incorporates a coupled-inductor wound to a specially selected magnetic material of powdered-iron. In this study, we investigate the limitations of the present design under transient operation and elucidate ways to eliminate them with the use of air-gapped ferrite cores. In modelling the operation under 50 Hz AC and transient conditions, a permeance-based approach is used; in addition, non-ideal characteristics of the transformer core are emphasized and discussed with empirical validations. The experimental work was facilitated using a lightning surge simulator coupled with the 230 V AC utility mains; combinational surge-waveforms (6 kV/3 kA) defined by IEEE C62.41 standards were continuously injected into SPD prototypes during destructive testing. Such procedures substantiate the overall surge-endurance capabilities of the different core types under testing. With regard to optimizations, we validated a 95% depletion of a negative-surge effect that would otherwise pass to the load-end, and another 13–16% reduction of the clamping voltage verified the effectiveness of the methods undertaken. In conclusion, SCASA prototypes that utilized air-gapped cores revealed a greater surge endurance with improved load-end characteristics.</jats:p>en
dc.identifier.citationSilva Thotabaddadurage SU, Kularatna N, Steyn-Ross DA (2021). Optimization of Supercapacitor Assisted Surge Absorber (SCASA) Technique: A New Approach to Improve Surge Endurance Using Air-Gapped Ferrite Cores. Energies. 14(14). 4337-4337.en
dc.identifier.doihttp://doi.org/10.3390/en14144337
dc.identifier.issn1996-1073
dc.identifier.urihttps://hdl.handle.net/10092/103677
dc.languageen
dc.language.isoenen
dc.publisherMDPI AGen
dc.rightsAll rights reserved unless otherwise stateden
dc.rights.urihttp://hdl.handle.net/10092/17651en
dc.subjectsupercapacitorsen
dc.subjectsurge protectionen
dc.subjectmagnetic permeanceen
dc.subjectair-gapped transformeren
dc.subjecteffective permeabilityen
dc.subjectSCASAen
dc.subject.anzsrc02 Physical Sciencesen
dc.subject.anzsrc09 Engineeringen
dc.subject.anzsrcFields of Research::40 - Engineering::4008 - Electrical engineering::400805 - Electrical energy transmission, networks and systemsen
dc.subject.anzsrcFields of Research::40 - Engineering::4008 - Electrical engineering::400807 - Engineering electromagneticsen
dc.subject.anzsrcFields of Research::40 - Engineering::4008 - Electrical engineering::400802 - Electrical circuits and systemsen
dc.subject.anzsrcFields of Research::40 - Engineering::4009 - Electronics, sensors and digital hardware::400911 - Power electronics
dc.subject.anzsrc40 - Engineering::4009 - Electronics, sensors and digital hardware::400904 - Electronic device and system performance evaluation, testing and simulation
dc.titleOptimization of Supercapacitor Assisted Surge Absorber (SCASA) Technique: A New Approach to Improve Surge Endurance Using Air-Gapped Ferrite Coresen
dc.typeJournal Articleen
uc.collegeFaculty of Engineering
uc.departmentElectric Power Engineering Centre
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