近场磁耦合无线电能与信息同步传输技术的发展(下篇):电路拓扑

An Overview of Simultaneous Wireless Power and Information Transfer via Near-Field Magnetic Links(Part Ⅱ): Circuit Topology

近场磁耦合无线电能传输(WPT)近十年以来已取得长足发展,在日常生活中WPT技术随处可见。实际工程应用中稳定可靠的WPT系统的电能发射端与接收端之间不仅需要建立能量传输通道,同时也需要建立数据通信链路以实现闭环控制和信息交互,故实际为电能与信息同步传输(SWPIT)系统。SWPIT系统可在已有磁耦合WPT电路拓扑的基础上,通过添加信息调制与解调电路实现传能与通信。该文回顾了近场磁耦合无线电能与信息同步传输技术中电路拓扑的发展,针对电路拓扑、信道优化等问题进行分析和归纳,最后展望了SWPIT系统的应用前景与发展趋势。

Near-field magnetic coupling wireless power transfer technique(WPT) has made great progress in the past decades, which can be seen in daily life. The implementation of reliable WPT system applied in actual scenarios usually requires close-loop feedback control and data interaction.Hence, it is necessary to establish a power link and a telemetry channel between the transmitter and receiver for WPT system, which actually requires simultaneously transmitting power and information(SWPIT). SWPIT system can be implemented by adding communication circuits to the existing WPT topology. This paper reviewed the development of the circuit topology for near-field magnetic coupling SWPIT technology, including circuit implementation and channel optimization, and finally summarized the applicable potential and development trend.