Paper Abstract and Keywords |
Presentation |
2022-01-28 09:55
Highly Extendable Modular Differential Power Processing Converter Utilizing Isolated Bus to Improve Power Generation of Photovoltaic Strings in Large-Scale Systems Takumi Suzuki, Masatoshi Uno (Ibaraki Univ.) EE2021-41 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The characteristic mismatch due to partial shading in photovoltaic (PV) strings comprising multiple panels triggers not only a significant reduction in energy yield but also a malfunction of maximum power point tracking. Differential power processing (DPP) converters have been proposed to prevent negative influences of characteristic mismatch. In large-scale systems, however, conventional DPP converters face various challenges, such as poor extendibility and increased cumulative power conversion loss. This paper proposes a modular DPP architecture with an isolated bus for large-scale systems. Several panels are grouped as a module, each having a DPP converter, and the system can be flexibly scaled up by adding modules without redesigning the DPP converter. Power from unshaded high-voltage modules is directly transferred to shaded low-voltage ones through the isolated bus, reducing the cumulative power conversion loss. A field testing using a prototype for a 1-kW module demonstrated the energy yield enhancement of 5.6% by the proposed DPP converter. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Photovoltaic / Partial Shading / Differential Power Processing Converter / High Extendibility / LLC Converter / / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 359, EE2021-41, pp. 58-63, Jan. 2022. |
Paper # |
EE2021-41 |
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) |
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EE2021-41 |
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) |
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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) |
Highly Extendable Modular Differential Power Processing Converter Utilizing Isolated Bus to Improve Power Generation of Photovoltaic Strings in Large-Scale Systems |
Sub Title (in English) |
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Keyword(1) |
Photovoltaic |
Keyword(2) |
Partial Shading |
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Differential Power Processing Converter |
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High Extendibility |
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LLC Converter |
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1st Author's Name |
Takumi Suzuki |
1st Author's Affiliation |
Ibaraki University (Ibaraki Univ.) |
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Masatoshi Uno |
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Ibaraki University (Ibaraki Univ.) |
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Speaker |
Author-1 |
Date Time |
2022-01-28 09:55:00 |
Presentation Time |
25 minutes |
Registration for |
EE |
Paper # |
EE2021-41 |
Volume (vol) |
vol.121 |
Number (no) |
no.359 |
Page |
pp.58-63 |
#Pages |
6 |
Date of Issue |
2022-01-20 (EE) |
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