| Autor: |
Byung-Song Lee, Shin-Myung Jung, Chan-Bae Park, Seung Hwan Lee |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
The Transactions of The Korean Institute of Electrical Engineers. 64:1651-1657 |
| ISSN: |
1975-8359 |
| DOI: |
10.5370/kiee.2015.64.11.1651 |
| Popis: |
In MHz operating wireless power transfer systems, skin- and proximity-effect losses in the transmitter and the receiver coils dominate the coil-to-coil efficiency of the system. A Litz-wire was regarded as a common solution for minimizing such Ohmic losses in high frequencies. In this paper, equivalent series resistances of 12 different cables including Litz-wire and copper tubing have been calculated and measured for a 6.78 MHz, 100W, 30 cm wireless power transfer system. It has been shown that the copper tubing has lower resistances compared to the Litz-wire in that frequency and a wireless power transfer system with the copper tubing was able to achieve much higher efficiency than a system using the Litz-wire. Calculations of the resistances and efficiencies were accomplished with analytical equations and those calculations were evaluated by experimental results. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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