电源学报2023，Vol.21Issue(6)：102-110,9.DOI:10.13234/j.issn.2095-2805.2023.6.102
磁耦合谐振式无线电能传输系统变电容调谐控制方法研究
Variable Capacitance Tuning Control Method for Magnetically-coupled Resonant Wireless Power Transfer System
摘要
Abstract
In practical applications,the relative position change between the two coupling coils of a wireless power transfer system will change the system parameters,resulting in system detuning as well as a lower power transmission ef-ficiency.For the problem of system detuning,a variable capacitance tuning control strategy is proposed.By controlling the charge and discharge time of the capacitor,the capacitance is equivalent to a variable capacitance,so that the e-quivalent capacitance value and the coil inductive reactance value can meet the resonant condition requirements.As a result,the system is always maintained in a resonant state,and the highest transmission efficiency between the transmit-ting and receiving coils of system will be kept.A simulation model was established,and an experimental prototype of magnetically-coupled resonant wireless power transfer system based on a series-series resonance compensation topology was built.The variable capacitance tuning control experiments were carried out,and experimental results show that the protype can realize stable and reliable wireless power transfer with a resonant frequency of 100 kHz and an input voltage of 20 V,thus verifying the effectiveness of the proposed variable capacitance tuning control method.关键词
磁耦合谐振式/无线电能传输/系统失谐/变电容调谐Key words
Magnetically-coupled resonant/wireless power transfer/system detuning/variable capacitance tuning分类
信息技术与安全科学引用本文复制引用
张杰,赵航,许知博,周磊,杨磊,张元启..磁耦合谐振式无线电能传输系统变电容调谐控制方法研究[J].电源学报,2023,21(6):102-110,9.基金项目
国网陕西省电力有限公司科技资助项目(5226XY 230001) This work is supported by Science and Technology Project of State Grid Shaanxi Electric Power Co.,Ltd.under the grant 522 6XY230001 （5226XY 230001）
