基于脉宽调变控制的可调电感补偿的谐振式无线充电技术  

Resonant Wireless Charging Technology Based on Pluse-width Modulation Controlled Adjustable Inductance Compensation

作　　者：杨旭 游林儒[1] 文小琴[1] 孟凡琨 

机构地区：[1]自主系统与网络控制教育部重点实验室,华南理工大学自动化科学与工程学院,广州510640

出　　处：《科学技术与工程》2018年第3期259-263,共5页Science Technology and Engineering

基　　金：国家自然科学基金(61271210); 中央高校基金(2015ZM147)资助

摘　　要：磁耦合谐振式无线充电技术是电动汽车充电领域新的发展方向,与强耦合感应式无线充电技术相比,磁耦合谐振式无线充电方式传输距离更远、无辐射污染、穿透性强。然而,在定距离串并磁耦合谐振式无线充电装置中,当发射线圈与接收线圈的距离由于某种原因发生变化时,原方和副方的谐振频率不一致,需要实时调整补偿电容,才能保证工作在当前距离下的最大效率。在分析前述问题的基础上,提出了一种基于脉宽调变(pluse-width modulation,PWM)控制可调电感补偿方案;并通过实验验证了该方法能在一定距离范围内,有效地提高系统在变距离中的传输效率。Magnetic coupling resonant wireless charging technology is a new development trend in the field of electric vehicle power charging,compared with the induction wireless charging technology. The magnetic coupling resonant wireless charging method has farther transmission distance,no radiation pollution and stronger penetration.However,when the distance between the transmitting coil and the receiving coil changes,the resonant frequen-cy of the original and the subordinate does not coincide,then the transmission efficiency is reduced,only to adjust the compensation capacitor in real time. The maxi-mum transmission efficiency at the current distance can be got.Based on the analysis of the above problems,an adjustable inductance compensation scheme based on PWM control is propos-ed and a experiment is designed. The experimental results show that the proposed methodcan effectively improve the transmission efficiency of the system in a certain distance.

关 键 词：无线充电 磁耦合谐振 PWM控制可调电感 串并拓扑 

分 类 号：TP271.5[自动化与计算机技术—检测技术与自动化装置]