Abstract
In this paper, the working principle of contactless power transmission systems via electromagnetic (EM) resonant coupling technology is analyzed in detail. By introducing the leakage inductance variable, a detailed T-type two-port network model is proposed. Meanwhile, the dynamic characteristic of power transmission systems is acquired through transport equations. By introducing the coupling coefficient and the quality factor, the optimum working condition of loads is obtained where the influence of different physical parameters on the system performance is taken into consideration. On the basis of theoretical derivation, a high-power amplifier which has been optimized according to the constraint equations is designed to operate under megahertz. The experimental results show that the system can provide energy to the load within the scope of 2.5 meters. Therefore the principle of this paper can provide an effective way for design of a practical EM resonant coupling system for contactless power transmission.
| Original language | English |
|---|---|
| Pages (from-to) | 153-158 |
| Number of pages | 6 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 32 |
| Issue number | 21 |
| State | Published - 25 Jul 2012 |
| Externally published | Yes |
Keywords
- Critical coupling
- Electromagnetic resonant coupling
- Mode coupling factor
- Two-port network
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