| Presentation | 2014-04-17 Unified Formula on Maximum Available Efficiency for RF Power Transfer Systems : Lucid Elaboration Even Before Learning a Word of Coupled Resonance Takashi OHIRA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Many papers and books were published on the topic of wireless power transfer. They conclude that power transfer efficiency is primarily dominated by coupling coefficient k multiplied by Q factor or so-called resonant kQ product. Indeed kQ product is useful when its equivalent circuit is represented by single-mode resonators, it is not always. This lecture presents a system of versatile formulas that characterizes wireless power transfer schemes in arbitrary coupling topologies. Maximum available efficiency is formulated in two-port immittance matrix domain. Index kQ is extended to general cases even where resonance or filtering model is inapplicable. The novel index, named efficiency angle θ, rigorously predicts the performance of any power transfer regime without resort to its equivalent circuit model such as coupled LCR networks. Angle θ works as a unified pilotage for lucid design of various types of wireless power transfer. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | RF power transfer / conjugate matching / efficiency angle tangent / performance index / kQ product |
| Paper # | WPT2014-5,SCE2014-5,MW2014-5 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2014/4/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Unified Formula on Maximum Available Efficiency for RF Power Transfer Systems : Lucid Elaboration Even Before Learning a Word of Coupled Resonance |
| Sub Title (in English) | |
| Keyword(1) | RF power transfer |
| Keyword(2) | conjugate matching |
| Keyword(3) | efficiency angle tangent |
| Keyword(4) | performance index |
| Keyword(5) | kQ product |
| 1st Author's Name | Takashi OHIRA |
| 1st Author's Affiliation | Toyohashi University of Technology() |
| Date | 2014-04-17 |
| Paper # | WPT2014-5,SCE2014-5,MW2014-5 |
| Volume (vol) | vol.114 |
| Number (no) | 10 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |