Arab Ansari, S., Davidson, J. orcid.org/0000-0002-6576-3995 and Foster, M.P. (2023) Inserted-shunt integrated planar transformer with low secondary leakage inductance for LLC resonant converters. IEEE Transactions on Industrial Electronics, 70 (3). pp. 2652-2661. ISSN 0278-0046
Abstract
The leakage inductance of an integrated transformer is usually utilised as the series inductor of an LLC topology. However, leakage inductance exists on both primary and secondary sides of an integrated transformer and secondary leakage inductance leads the control and design of the converter to difficulty. In this paper, a novel topology for inserted-shunt integrated transformers is proposed which has low secondary leakage inductance. The inserted shunt of the proposed topology is not segmental and can be located conveniently within the transformer. In addition, the inserted shunt does not require low permeability core material, simplifying its manufacture. The design and modelling of the proposed transformer topology are presented and verified by finite-element analysis and experimental implementation. The proposed topology is also compared with a recently published inserted-segmental-shunt integrated transformer. It is shown that the proposed transformer provides higher efficiency and lower AC resistance. Finally, an LLC resonant converter is implemented to examine the performance of the proposed integrated transformer in practice.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Integrated transformer; LLC resonant converter; secondary leakage inductance |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Sciences Research Council EP/S031421/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 May 2022 14:09 |
Last Modified: | 12 Apr 2023 00:13 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TIE.2022.3165259 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:186238 |