基于E类放大器的电场耦合式水下无线电能传输系统设计  

Design of electric-field coupled underwater wireless power transfer system based on class E amplifier

作　　者：高镇 于广强 刘宁[2] GAO Zhen;YU Guangqiang;LIU Ning(School of Electrical Automation and Information Engineering,Tianjin University,Tianjin 300110,China;National Ocean Technology Center,Tianjin 300110,China)

机构地区：[1]天津大学电气自动化与信息工程学院,天津300110 [2]国家海洋技术中心,天津300110

出　　处：《河海大学学报（自然科学版）》2019年第6期560-567,共8页Journal of Hohai University(Natural Sciences)

基　　金：国家重点研发计划(2017YFF0208400)

摘　　要：针对单级LC谐振型电场耦合式水下无线电能传输(electrical-field coupled power transfer,ECPT)系统的输出功率低、谐振容量小、频率漂移大等关键问题,设计一种更适于海水环境下的无线电能传输系统。该系统基于CLC-S调谐网络,综合E类放大器效率高、频率高等优点,实现较大的功率输出。利用Maxwell有限元仿真软件,对海水环境下耦合机构的电容值进行了有限元分析。通过对水下耦合机构进行试验,分析负载品质因数Q、归一化频率μ对水下无线电能传输系统的影响规律,可为水下ECPT系统设计提供参考。Aiming at the key problems of single-stage LC resonant electric-field coupled underwater power transfer(ECPT) system with low output power, small resonance capacity and large frequency drift, a more suitable wireless power transfer system in seawater environment is designed. The system is based on the CLC-S tuning network, which combines the advantages of high efficiency and high frequency of the class E amplifier, and achieves a large power output. The capacitance value of the coupling mechanism in seawater environment was solved by Maxwell finite element simulation software. Through the experiment of underwater coupling mechanism, the influence law of load quality factor Q and normalized frequency μ on underwater wireless power transfer system is analyzed. The experimental results provide an important reference for the design of underwater ECPT systems in the future.

关 键 词：无线电能传输 水下ECPT系统 电场耦合 AUV无线充电 E类放大器 CLC-S调谐网络 

分 类 号：TM724[电气工程—电力系统及自动化]