CAJ | 학술논문

对于磁耦合谐振式无线电能传输(magnetically coupled resonant wireless power transfer，MCR-WPT)系统，其谐振补偿网络是系统的重要组成部分。该文提出并设计了一种用于恒压输入、恒流输出磁耦合系统的新型补偿网络，该补偿网络不仅可实现电流增益的负载无关性，还具有单位功率因数输入的特性。理论推导出系统传输效率及输出功率的数学模型，并分析其与耦合系数、工作频率、负载电阻之间的相应特性曲线。数值仿真和实验结果表明，新型补偿网络应用于MCR-WPT系统时，可实现系统电流增益的负载无关性，并获得较高整机效率。
대우자우합해진식무선전능전수(magnetically coupled resonant wireless power transfer，MCR-WPT)계통，기해진보상망락시계통적중요조성부분。해문제출병설계료일충용우항압수입、항류수출자우합계통적신형보상망락，해보상망락불부가실현전류증익적부재무관성，환구유단위공솔인수수입적특성。이론추도출계통전수효솔급수출공솔적수학모형，병분석기여우합계수、공작빈솔、부재전조지간적상응특성곡선。수치방진화실험결과표명，신형보상망락응용우MCR-WPT계통시，가실현계통전류증익적부재무관성，병획득교고정궤효솔。
Compensation network is critical component for the magnetically coupled resonant wireless power transfer (MCR-WPT) system. In this paper a novel resonant compensation network is proposed which is suitable for the magnetically coupled system with constant voltage input and constant current output. This novel compensation network can realize not only the current gain independent of loads, but also unit input power factor. The mathematical models of the transfer efficiency and output power are deduced theoretically, and their relations with coupling coefficient, operating frequency and load resistance are analyzed. Finally, the numerical simulations and experiments prove that current gain is independent of the load and a high efficiency can be obtained with the proposed compensation network for the MCR-WPT.