| Project/Area Number |
24656182
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Yokohama National University |
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Principal Investigator |
KAWAMURA Atsuo 横浜国立大学, 工学研究院, 教授 (80186139)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | パワーエレクトロニクス / ワイヤレス電力伝送 / 共振型整流回路 / インバータ / スイッチングデバイス / ワイヤレス / 直流変換 |
|---|
| Research Abstract |
1. To improve the efficiency of the rectifier at 13.56MHz, a capacitor was inserted in the ac side, and also an impedance matcher was inserted in front of the rectifier. As a result the efficiency 94% was experimentally observed at 1 kW output power. To improve the efficiency of the antenna, the wire resistance was reduced by changing the wire material and the magnetizing inductance was optimized by using the proposed equivalent circuit. As a result the 96% efficiency of the antenna was observed.
2. By implementation of the above two improvement, the total efficiency from 13.56MHz ac input to the dc output is expected to be 094x0.96=0.90, however the experiments at 1.5 kW output power of 12 cm distance showed the 89.1% efficiency.. The detail was presented at IPEC-Hiroshima held in May, 2014.
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