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| Presentation | 2022-01-28 09:30 Automatic Capacitive Current Balancing Multi-Phase Reconfigurable LLC Converter with Wide Voltage Gain Range for On-Board Battery Charger Kakeru Koyama, Masatoshi Uno (Ibaraki Univ.)  EE2021-40 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | On-board battery chargers need a large-current capacity isolated dc-dc converter with a wide voltage gain range as voltages of lithium-ion batteries vary depending on stage of charges. Although multi-phase LLC converters have been proposed to enhance input/output current capacities for large current applications, additional components and feedback control loops are necessary to actively balance multiple phase currents, resulting in increased system complexity and cost. Meanwhile, reconfigurable LLC converters have been proposed to widen voltage gain range, but conventional reconfigurable techniques require additional components and feedback control loops. This paper proposes an automatic current balancing multi-phase reconfigurable LLC converter with a wide voltage gain range. Phase currents in the proposed converter are automatically balanced thanks to the charge conservation of added flying capacitors. Furthermore, both primary- and secondary-side circuits are reconfigurable, achieving a wide voltage gain range. The experimental verification using a 1-kW prototype demonstrated the automatic current balancing capability and widened the voltage gain range. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Current Balance / Flying Capacitor / Voltage Gain Characteristic / Reconfiguration / Multi-Phase LLC Converter / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 359, EE2021-40, pp. 52-57, Jan. 2022. | |
| Paper # | EE2021-40 | |
| Date of Issue | 2022-01-20 (EE) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | EE2021-40 |
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| Conference Information | |
| Committee | EE |
| Conference Date | 2022-01-27 - 2022-01-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EE |
| Conference Code | 2022-01-EE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Automatic Capacitive Current Balancing Multi-Phase Reconfigurable LLC Converter with Wide Voltage Gain Range for On-Board Battery Charger |
| Sub Title (in English) | |
| Keyword(1) | Current Balance |
| Keyword(2) | Flying Capacitor |
| Keyword(3) | Voltage Gain Characteristic |
| Keyword(4) | Reconfiguration |
| Keyword(5) | Multi-Phase LLC Converter |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kakeru Koyama |
| 1st Author's Affiliation | Ibaraki University (Ibaraki Univ.) |
| 2nd Author's Name | Masatoshi Uno |
| 2nd Author's Affiliation | Ibaraki University (Ibaraki Univ.) |
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| Speaker | Author-1 |
| Date Time | 2022-01-28 09:30:00 |
| Presentation Time | 25 minutes |
| Registration for | EE |
| Paper # | EE2021-40 |
| Volume (vol) | vol.121 |
| Number (no) | no.359 |
| Page | pp.52-57 |
| #Pages | 6 |
| Date of Issue | 2022-01-20 (EE) |
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