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| Presentation | 2016-06-03 15:45 Trigonometric Phasor View on Magnetically Coupled Resonators for Wireless Power Transfer Takashi Ohira (TUT)  WPT2016-14 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper explores how best to exploit a magnetic-resonance wireless power transfer system once given. We theoretically find a solution to the maximum power transfer efficiency by employing trigonometric functions and phasor graphics. Showing an equivalent circuit of the system, we formulate the voltage and current behaviors. Capacitors added in series compensate the reactance of the coupling coils. This makes the input impedance positive real. Under this condition, the port voltages as well as currents become orthogonal between input and output. We next adjust the load resistance so as to maximize the power transfer efficiency. An angular parameter is introduced to translate the optimum load, input-to-output voltage ratio, and maximum efficiency into their elegant formulas. We finally show a phasor chart that explains those relationship in a lucid way. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | power transfer theory / resonance / optimum load / efficiency angle / efficiency tangent / kQ product / current ratio / current phase | |
| Reference Info. | IEICE Tech. Rep., vol. 116, no. 74, WPT2016-14, pp. 25-28, June 2016. | |
| Paper # | WPT2016-14 | |
| Date of Issue | 2016-05-27 (WPT) | |
| ISSN | Print edition: ISSN 0913-5685 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 | WPT2016-14 |
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| Conference Information | |
| Committee | WPT |
| Conference Date | 2016-06-03 - 2016-06-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Technology of Wireless Power Transfer & Electric Vehicle |
| Paper Information | |
| Registration To | WPT |
| Conference Code | 2016-06-WPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Trigonometric Phasor View on Magnetically Coupled Resonators for Wireless Power Transfer |
| Sub Title (in English) | |
| Keyword(1) | power transfer theory |
| Keyword(2) | resonance |
| Keyword(3) | optimum load |
| Keyword(4) | efficiency angle |
| Keyword(5) | efficiency tangent |
| Keyword(6) | kQ product |
| Keyword(7) | current ratio |
| Keyword(8) | current phase |
| 1st Author's Name | Takashi Ohira |
| 1st Author's Affiliation | Toyohashi University of Technology (TUT) |
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| Speaker | Author-1 |
| Date Time | 2016-06-03 15:45:00 |
| Presentation Time | 25 minutes |
| Registration for | WPT |
| Paper # | WPT2016-14 |
| Volume (vol) | vol.116 |
| Number (no) | no.74 |
| Page | pp.25-28 |
| #Pages | 4 |
| Date of Issue | 2016-05-27 (WPT) |
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