Analysis and Experimental Verification of Reducing Intra-winding Capacitance in a Copper Foil Transformer

Rakesh Ramachandran, Morten Nymand, Jesper Nielsen

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Abstrakt

This paper demonstrates the reduction of intra-winding capacitance in a high efficiency copper foil transformer. High efficiency transformer have low ac-resistance and low leakage inductance due to extensive interleaving of the transformer winding. Often high interleaving in a transformer winding leads to an increase in the intra-winding capacitance. This paper analyze how to estimate the intra-winding capacitance in a copper foil transformer. Two transformers are designed for a 2.4 kW, 50 kHz isolated dc-dc converter and presented in this paper. By changing the winding configuration, the intra-winding capacitance of the transformer has been reduced from 692pF to 150pF without increasing the leakage inductance and the ac-resistance. Efficiency measurement for the 2.4 kW converter utilizing the proposed low intra-winding capacitance transformer is also presented in this paper.

OriginalsprogEngelsk
TitelAPEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
ForlagIEEE
Publikationsdato2020
Sider2653-2657
ISBN (Trykt)978-1-7281-4830-4
ISBN (Elektronisk)9781728148298, 978-1-7281-4828-1
DOI
StatusUdgivet - 2020
Begivenhed35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 - New Orleans, USA
Varighed: 15. mar. 202019. mar. 2020

Konference

Konference35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
Land/OmrådeUSA
ByNew Orleans
Periode15/03/202019/03/2020
SponsorIEEE Power Electronics Society (PELS), Industry Applications Society (IAS), Power Sources Manufacturers Association (PSMA)
NavnIEEE Applied Power Electronics Conference and Exposition
ISSN2470-6647

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