基于电容调制的无线电能传输系统信号电能同步传输

摘要

The capacitor modulation of the signal is achieved by modifying the compensation capacitance.Through artificial influence on operation condition of the resonator,the voltage across the coil can be effectively controlled.Through a series of signal processing links,such as step-down dividing voltage,demodulating,filtering,comparing and so on,the transmitting signal is reproduced.The simulative and experimental results demonstrate that the proposed scheme is effective,where the signal can be sent and extracted correctly,and the impact on power transmission is relatively small.In these regards,the synchronous transmission of signal and power in WPT (Wireless Power Transmission) system is realized.%采用改变补偿电容的方法对信号进行电容调制,通过人为影响补偿谐振腔的工作状态,使得线圈两端电压出现一定规律变化,再经过降压分压、检波、滤波、比较等一系列信号处理环节,还原发送的信息.仿真及实验结果表明,该方案设计合理,可以正确地发送和提取相关信号,并对电能传输的影响较小,实现了无线电能传输系统信号与电能的同步传输.