电工技术学报2017，Vol.32Issue(18)：26-35,10.DOI:10.19595/j.cnki.1000-6753.tces.161318
包络调制无线电能传输系统边界条件研究
Study on Boundary Condition of Wireless Power Transfer System Based on Envelope Modulation
摘要
Abstract
Compared to the traditional wireless power transfer (WPT) system, the wireless power transfer system based on envelope modulation has the advantages of simple structure and convenient control. However, the conditions such as the initial parameters and load variation will severely affect the oscillatory condition and the high frequency electric energy envelope quality of the wireless power transfer system based on envelope modulation. Thereby, the power transmission and the quality of load power would be affected inevitably. Based on ac impedance analysis method, zero current switching (ZCS) control technology was used to analyze the system state variables in time domain. The boundary for oscillatory condition and the zero-valley value of the energy envelope of system were obtained based on the discrete iteration method. Then, the operating boundary condition for wireless power transfer system based on envelope modulation was derived. Simulation and experimental results illustrate that the system always operates in resonant soft-switching state and keeps good quality of high frequency electric energy envelope within the scope of the boundary conditions. The results prove the validity of the theoretical analysis.关键词
无线电能传输/包络调制/边界条件/软开关Key words
Wireless power transfer/envelope modulation/boundary condition/soft-switching分类
信息技术与安全科学引用本文复制引用
孙跃,张路,王智慧,戴欣,蒋成..包络调制无线电能传输系统边界条件研究[J].电工技术学报,2017,32(18):26-35,10.基金项目
科技部国家863计划主题项目(2015AA016201)和国家自然科学基金(51377183)资助. （2015AA016201）
