中文摘要：

分析了电磁耦合谐振式无接触电能传输系统的工作原理,通过引入漏感变量,建立了T型等效二端口电路模型,并根据二端口传输方程得出电能传输的动态特性。通过耦合系数与品质因数的引入,讨论了不同物理参数对系统性能的影响,并得出了负载的最佳工作条件。根据理论推导,设计了大功率高频功率放大器,并根据约束条件对振荡器参数进行优化。实验结果表明,该系统可以对间距在2.5 m范围内的负载提供能量。该文建模方法可以为电磁耦合谐振式能量传输实际系统的设计提供有效途径。

英文摘要：

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 th6 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.