宽频带范围下磁场能量收集的匹配网络设计  

Design of Matching Network for Magnetic Field Energy Harvesting in Wide Frequency Range

作　　者：聂晴晴 彭晗 李红斌 康勇 NIE Qingqing;PENG Han;LI Hongbin;KANG Yong(State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《中国电力》2021年第10期134-143,195,共11页Electric Power

基　　金：国家自然科学基金面上资助项目(驱动损耗与碳化硅器件损耗协同优化的高功率密度谐振驱动研究,52007077);中央高校基本科研业务费专项资金资助项目(2019KFYXKJC014)。

摘　　要：磁场能量收集技术是电磁环境中分布式传感器实现自供能的有效手段。与工频磁场和射频磁场等单一频率的磁场环境不同,电力变换器中的磁场分布具有宽频率范围特性。为了提高取能模块的功率密度,应尽可能多地在有限体积内收集能量,提出通过采用双级谐振-带通滤波网络。与此同时,基于相同取能线圈,充分对比了不同电流和负载特性下,单级谐振网络和双级谐振-带通网络的输出特性,归纳出双级谐振-带通网络的适用范围。Magnetic field induction energy harvesting is an effective solution for self-powered sensors in electromagnetic environment.Different from electric field and RF energy of single frequency,the electromagnetic field in power conversion systems contain wide frequency ranges.To increase the power density of self-powering module,it is important to harvest as much as power within limited volume.A dual-resonance bandpass filtering network is thus proposed.Furthermore,the output characteristics of the single LC resonant network and dual-resonance bandpass network are compared under different current patterns and load conditions.The suitable application conditions for dual-resonance bandpass network are summarized.

关 键 词：磁场能量收集 高频 宽频率范围 单级谐振 双谐振带通 输出功率 

分 类 号：TM619[电气工程—电力系统及自动化]