Proceedings ArticleDOI
Investigation on transformer design of high frequency high efficiency dc-dc converters
Dianbo Fu,Fred C. Lee,Shuo Wang +2 more
- pp 940-947
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TLDR
In this paper, the authors studied the high-frequency high-efficiency transformer design and proposed several novel concepts to reveal the essence of the transformer design, in order to minimize the winding loss, several winding structure are proposed and compared.Abstract:
This paper studies the high-frequency high-efficiency transformer design. Several novel concepts are proposed to reveal the essence of the transformer design. In order to minimize the winding loss, several winding structure are proposed and compared. The planar transformer winding with PCB or spiral windings are discussed. The key factors to achieve the low winding losses are presented. The transformer design of the LLC resonant converter is investigated. The impacts on integration of magnetizing inductance and leakage inductance are studied.read more
Citations
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Journal ArticleDOI
High-power-density high-efficiency LLC converter with an adjustable-leakage-inductance planar transformer for data centers
TL;DR: In this article, a high-power-density and high-efficiency LLC converter with an adjustable leakage inductance planar transformer for the DC-DC conversion in data center power supplies is presented.
Proceedings ArticleDOI
Inductive contactless power transfer system with coaxial coreless transformer for dc power distribution
TL;DR: In this paper, the authors proposed to use contactless power transfer (CPT) systems as electric plugs and outlets for household dc distribution system, which can connect and disconnect safely without electric shock and arc discharge because there is no contactor between primary side and secondary side.
Proceedings ArticleDOI
High efficiency high density telecom rectifier with GaN device
TL;DR: In this article, the design considerations of a high switching frequency (1MHz) and high efficiency interleaving totem pole PFC stage with DCM boundary control followed by a high resonant frequency (500kHz), PCB winding based LLC DCDC stage is explained.
Proceedings ArticleDOI
Automatized connection of the layers of planar transformers with parallel windings to improve the component behavior
TL;DR: In this paper, a methodology for determining the connections of the parallel windings that reduces the power losses (and temperature) in the windings of multi-winding transformers is presented.
Proceedings ArticleDOI
Novel concepts for high frequency high efficiency transformer design
Dianbo Fu,Shuo Wang +1 more
TL;DR: In this paper, the authors provide a thorough study of transformer design for high-frequency applications, and several novel concepts are proposed to reveal the fundamentals of the transformer design, and the minimum electric and magnetic energy theorem is presented to optimize transformer design.
References
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Proceedings ArticleDOI
LLC resonant converter for front end DC/DC conversion
TL;DR: In this article, a LLC resonant converter is proposed for front end DC/DC conversion in a distributed power system, which utilizes leakage and magnetizing inductance of a transformer.
Proceedings ArticleDOI
Optimal design methodology for LLC resonant converter
TL;DR: In this paper, the relationship between converter efficiency and operation range with different circuit parameters has been revealed and an optimal design methodology has been developed based on the revealed relationship, and a 1MHz, 1kW LLC converter is designed to verify the proposed method.
Journal ArticleDOI
A Novel Driving Scheme for Synchronous Rectifiers in LLC Resonant Converters
TL;DR: In this paper, a synchronous rectifier (SR) driving scheme was proposed for dc-dc resonant converters with SRs, which can achieve low stress, high efficiency, and high power density.
Journal ArticleDOI
Three-level LLC series resonant DC/DC converter
TL;DR: In this article, a three-level soft switching LLC series resonant dc/dc converter is presented, which achieves zero-voltage switching (ZVS) for each main switch without any auxiliary circuit.
Journal ArticleDOI
A novel approach for minimizing high-frequency transformer copper losses
J. P. Vandelac,Phoivos D. Ziogas +1 more
TL;DR: In this article, a graphical and numerical method of calculating and minimizing losses in windings, that generalizes previous findings, has been introduced using electromagnetic theory and MMF diagrams in both space and time.