Abstract
The efficiency of coupling resonance system is the application barrier of the magnetically coupled resonant wireless energy transfer. The paper based on the broad prospects of magnetically coupled resonant wireless energy transfer technology for high-speed rail system applications, based on the coupled mode theory, and analyzes the wireless high-speed train power system movement state that effect of the transmission efficiency of the system transmitter coil and the receiving coil natural resonant frequency when the natural resonant frequency change; At the same time, the overall system efficiency analysis based on the angle of emission end coil power factor angle is one of the factors influencing the system transmission efficiency. Forward a adjustable sender power factor frequency tracking control technology that the drive frequency synchronization tracking transmitter coil inherent frequency, to ensure the system working at best power factor in the resonant state, effectively improve the transmission efficiency of the system. This paper also produced a small high-speed train power system dynamic model of 80kHz resonant frequency with experimental verification for magnetically coupled resonant wireless energy transfer technology in high-speed rail in laying a theoretical and practice basis.
| Original language | English |
|---|---|
| Pages (from-to) | 308-312 |
| Number of pages | 5 |
| Journal | Diangong Jishu Xuebao/Transactions of China Electrotechnical Society |
| Volume | 30 |
| State | Published - 1 Sep 2015 |
| Externally published | Yes |
Keywords
- Frequency tracking
- Magnetic coupling resonance
- Maximum transmission efficiency
- Wireless energy transmission in high speed train
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