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Analysis,design and experimentation of a zero-voltage switching

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conference contribution
posted on 2017-12-06, 00:00 authored by Quan Li, Peter WolfsPeter Wolfs
A Zero-Voltage Switching (ZVS) two-inductor boost converter with an integrated magnetic structure has been previously proposed to achieve the size and cost reduction in the converter design with discrete magnetics. In the integrated magnetic structure, the five copper windings and the four cores required by the two input inductors, the resonant inductor and the transformer in the original ZVS converter are reduced to three copper windings and one three-limbed core. This paper presents a detailed magnetic analysis of the ZVS two-inductor boost converter with the magnetic integration. The equivalent input and transformer magnetising inductances are established in terms of the reluctances of the individual core limbs and the numbers of the individual windings. This allows the converter with the integrated magnetics to be modelled and analysed using an equivalent design with discrete magnetics. The effects of the leakage reluctances are also considered. The magnetic circuit analysis tool can be also used for any other converters with magnetic integration. In the magnetic design process, the peak and the ac flux densities in the three core limbs are solved explicitly so that saturation and core loss calculation can be easily performed. Finally the theoretical waveforms of a 40-W 1-MHz ZVS converter are also provided to verify the theoretical analysis.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Start Page

985

End Page

990

Number of Pages

6

Start Date

2006-01-01

Location

Jeju, Korea

Publisher

IEEE

Place of Publication

New York, N.Y.

Peer Reviewed

  • No

Open Access

  • No

External Author Affiliations

Faculty of Sciences, Engineering and Health; TBA Research Institute;

Era Eligible

  • No

Name of Conference

IEEE Power Electronics Specialists Conference