Enhanced Power-Delivered-to-Load Through Planar Multiple-Harmonic Wireless Power Transmission
| Autor: | Mohammad Najjarzadegan, H. Sarfaraz, Iman Ghotbi, Omid Shoaei, Shahin Jafarabadi Ashtiani |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Power transmission Materials science business.industry Amplifier 020208 electrical & electronic engineering Electrical engineering 02 engineering and technology Power (physics) Harmonic analysis 020901 industrial engineering & automation 0202 electrical engineering electronic engineering information engineering Harmonic Waveform Voltage source Electrical and Electronic Engineering Coaxial business |
| Zdroj: | IEEE Transactions on Circuits and Systems II: Express Briefs. 65:1219-1223 |
| ISSN: | 1558-3791 1549-7747 |
| DOI: | 10.1109/tcsii.2018.2791444 |
| Popis: | In this brief, a method is presented to enhance the amount of power delivered to load (PDL) by making use of three-harmonic wireless power transmission while it does not occupy larger area than a conventional single-coil system. The proposed system consists of three inductive links each one tuned at a harmonic of the operating frequency. A single power amplifier supplies all of them. Therefore, the sum of the currents flowing through the secondary-side coils becomes almost square-wave and PDL will be 32.5% greater than that of a conventional single-coil system when both systems are supplied with the same voltage source. The parasitic inter-couplings between the coils deform the current waveform and make the PDL enhancement unachievable. Thus, a perpendicular 8-shaped coils structure is proposed to diminish these parasitic couplings and all the coils can be planar and coaxial. A laboratory prototype has been fabricated on printed circuit board operating at the frequency of 200 kHz. The experimental results confirm that the PDL is enhanced from 1.93 to 2.5 W by employing the proposed technique rather than a single-coil system. |
| Databáze: | OpenAIRE |
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