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Implementation of the supercapacitor-assisted surge absorber (SCASA) technique in a practical surge protector

Abstract
Their combination of large continuous energy ratings and very large time constants allows supercapacitors to be used in surge protection circuits. This fact, supported by recent research publications and laboratory tests, has assisted the authors to propose a new surge protection circuit topology known as the supercapacitor-assisted surge absorber (SCASA). This technique utilizes a multi-winding transformer, common surge protector devices such as metal oxide Varistors (MOV) and/or semiconductor types combined with a supercapacitor sub-circuit to absorb part of the surge energy usually expected to dissipate within the MOV or the semiconductor. The paper presents design details and test results for a differential mode surge protector based on the SCASA technique where the test device was subjected to lightning-type surges defined in international standards for Class-A and Class B type protectors. The performance of a prototype based on Class-B waveforms of up to 6.6 kV surges generated from a lightning surge simulator are discussed in the paper. Its performance is compared with two commercially available surge protectors.
Type
Conference Contribution
Type of thesis
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Citation
Fernando, J., Kularatna, N., & Talele, S. (2014). Implementation of the supercapacitor-assisted surge absorber (SCASA) technique in a practical surge protector (pp. 5191–5195). Presented at the IECON’2014 The 40th Annual Conference of the IEEE Industrial Electronics Society, Conference held at Sheraton Hotel Dallas, Dallas TX, USA. http://doi.org/10.1109/IECON.2014.7049290
Date
2014
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Rights
This is an author's version of a paper accepted for publication in the Proceedings of the 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014 ) © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.