基于无线电力载波的kW级非接触能量数据传输系统研究与设计

Study and Design of Wireless Power Carrier-based Non-contact Power and Data Transfer System with kW-level Power Level

为解决传统注入式电能和数据非接触同步传输方案存在的通信速率低、交叉干扰强、传输功率等级小、电压等级低、可靠性差等问题,提出了“无线电力载波”的电能数据同介质同步传输方案。该方案将感应式无线电能传输技术与电力线载波通信技术有机结合,并采用共口径天线,实现了电能与数据的同介质无线传输,不但电能传输功率大、转换效率高,而且数据传输速率高达几十Mb/s。分析了功率传输链路和数据传输链路的设计及解耦实现原理,并在实验室构建了一台300 V输入、1.5 kW/6.5 A输出、传输距离30 mm的原理样机对方案进行验证。实验结果证明了该方案的可行性和先进性,在实现92.5%电能转换效率的同时实现31.4 Mb/s的高速数据同步传输。

In order to solve the problems of low communication rate,strong cross-interference,low transfer voltage/power level and poor reliability in the traditional wireless power and data transfer(WPDT),a novel solution for WPDT system based on power line carrier is proposed.This method combines the inductive wireless power transmission technology with power line carrier communication technology and shared aperture antennas to realize the simultaneous transmission of energy and data in the same wireless transmission medium.The proposed WPDT system has high power capability and high conversion efficiency.Moreover,the corresponding data transmission rate is up to dozens of Mb/s.The parameter design of the power transmission circuit,data link circuit,and their decoupling are analyzed in detail.A 1.5 kW/6.5 A prototype with 300 V input was built,which achieved 92.5%power conversion efficiency and 31.4 Mb/s high-speed data synchronous transmission.The experimental results proved the feasibility and advancement of the proposed method.