一种最大效率恒压输出无线供能控制技术研究  

Research on a maximum efficiency and constant voltage output control technology for wireless power transfer system

作　　者：沈鹏飞 谢岳 Shen Pengfei;Xie Yue(Institute of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学机电工程学院,浙江杭州310018

出　　处：《电子技术应用》2020年第4期89-92,共4页Application of Electronic Technique

摘　　要：针对无线电能传输技术中的恒压输出和最大效率问题,提出了一种基于能量注入的移相恒压控制无线电能传输技术。首先通过电路分析得到系统电压增益和传输效率等特性函数,在此基础上设计了一种新型控制方法,通过改变逆变器的能量注入占空比和移相角,实现在负载变化时系统的最大效率和恒压输出。实验结果验证了所提方法的可行性和理论分析的正确性,在整个负载变化范围内,采用能量注入的移相恒压控制方法时整机效率比常见的移相恒压控制方法提高3%~10%,满载时整机效率达到89%。Aiming at the problems of constant voltage output and maximum efficiency of wireless power transfer technology,a wireless power transfer technology based on energy injection and phase-shifted constant voltage control methods is proposed.Firstly,the characteristic functions such as system voltage gain and transmission efficiency are obtained through circuit analysis.Based on this,a novel control method is designed.By changing both the energy injection duty cycle and phase shift angle of the inverter,both the maximum efficiency and constant voltage output of the system are realized when the load changes.The experimental results verify the feasibility of the proposed technology and the correctness of the theoretical analysis.The overall efficiency of energy injection and phase-shifted constant voltage control method is 3%~10% higher than that of the common phase-shifted constant voltage control method within the whole load variation range.At full load,the overall efficiency reaches 89%.

关 键 词：无线电能传输 能量注入 恒压 最大效率 

分 类 号：TN86[电子电信—信息与通信工程]