A Novel Transformer Structure for High power, High Frequency converter

Power transformer structure is a key factor for the high power, high frequency converter performance which includes efficiency, thermal performance and power density. This paper proposes a novel transformer structure for the kilo-watt level, high frequency converter which is reinforce insulation nee...

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Bibliographic Details
Published in2007 IEEE Power Electronics Specialists Conference pp. 214 - 218
Main Authors Chao Yan, Fan Li, Jianhong Zeng, Teng Liu, Jianping Ying
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2007
Subjects
Cable insulation
Eddy currents
Frequency conversion
Inductance
Interleaved codes
interleaving structure
LLC converter
PCB-winding
Power transformer insulation
Power transformers
Rectifiers
termination effect
Thermal factors
Wire
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Summary:Power transformer structure is a key factor for the high power, high frequency converter performance which includes efficiency, thermal performance and power density. This paper proposes a novel transformer structure for the kilo-watt level, high frequency converter which is reinforce insulation needed for the secondary side to primary side. The transformer has spiral-wound primary layers using TIW (triple insulation wire) and PCB-winding secondary layers. All the windings are arranged by full interleaving structure to minimize the leakage inductance and eddy current loss. Further more, the secondary rectifiers and filter capacitors are mounted in PCB-winding secondary layers to further minimize the termination effect. A 1.2 KW (O/P: 12 V/100 A, I/P: 400 V) Mega Hz LLC converter prototype employed the proposed transformer structure is constructed, and over 96% efficiency achieved.
ISBN:9781424406548
1424406544
ISSN:0275-9306
2377-6617
DOI:10.1109/PESC.2007.4341991