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High frequency (MHz) soft switched flyback dc-dc converter using GaN switches and six-layered PCB transformer
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. (Power Electronics)ORCID iD: 0000-0002-7802-0795
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. (Power Electronics)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
2016 (English)In: IET Conference Publications, UK: Institution of Engineering and Technology, 2016, Vol. 2016, 1-6 p., CP684Conference paper, Published paper (Refereed)
Abstract [en]

The increased switching losses with increasing switching frequency are the biggest concerns in designing high power density converters. This paper presents the investigation of an energy efficient DC-DC flyback converter in combination with six layered printed circuit board transformer. The recorded efficiency of the low profile transformer for the frequency range of 1-5MHz is 98% at power density of 770W/in3. The proposed converter is characterized for frequencies up to 4MHz by using possible soft switching techniques such as Boundary Mode and Quasi Resonant Mode. The emerging Gallium Nitride (GaN FET) devices are used as power switch. The control is incorporated with Digital Signal Processor (dsPIC) for both the Boundary and Quasi Resonant Modes of operations. The proposed flyback DC-DC converter is tested on a prototype Printed Circuit Board (PCB). The performance of the proposed converter is investigated for the telecom input voltage range of 36-72Vdc. The maximum obtained energy efficiency of the converter is about 94%. According to the authors' knowledge, this is the maximum efficiency ever achieved in flyback converters switching in MHz frequency range. The results are very encouraging for the development of high frequency, high power density and low cost isolated power converters.

Place, publisher, year, edition, pages
UK: Institution of Engineering and Technology, 2016. Vol. 2016, 1-6 p., CP684
Keyword [en]
Flyback Converter, dc-dc converter, High frequency converter, Hybrid transformer, Efficient converters, low profile converters, PCB transformer
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-28956DOI: 10.1049/cp.2016.0154Scopus ID: 2-s2.0-85009100510Local ID: STCISBN: 978-1-78561-188-9 (print)OAI: oai:DiVA.org:miun-28956DiVA: diva2:974828
Conference
8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016; Glasgow; United Kingdom; 19 April 2016 through 21 April 2016
Available from: 2016-09-27 Created: 2016-09-27 Last updated: 2017-06-29Bibliographically approved
In thesis
1. Design and optimization of soft switched power converters for low and medium power applications
Open this publication in new window or tab >>Design and optimization of soft switched power converters for low and medium power applications
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2016. 119 p.
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 128
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-29801 (URN)STC (Local ID)978-91-88025-93-7 (ISBN)STC (Archive number)STC (OAI)
Presentation
2016-12-12, C306, Sundsvall, 13:15 (English)
Supervisors
Note

Vid tidpunkten för seminariet var följande delarbeten opublicerade: delarbete 4 under granskning.

At the time of the licentiate seminar the following papers were unpublished: paper 4 under review.

Available from: 2017-01-02 Created: 2017-01-02 Last updated: 2017-06-29Bibliographically approved

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Publisher's full textScopushttp://ieeexplore.ieee.org/document/7739342/?arnumber=7739342

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CiteExportLink to record
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