摘要
无线电能传输(WPT)系统的发送端和接收端构成两个分立的系统,通常采用外接DC/DC变换器进行单侧控制,或增加无线通信环节并仿照传统隔离DC/DC变换器的控制方法来构建一个闭环控制系统。为提高引入无线通信后系统动态响应速度和稳定性,提出一种初级谐振电流自修正控制方法,采用基波分析法对LCC-S谐振补偿网络进行建模和工作原理分析,通过初级全桥移相控制实现对谐振电流的有效调节,进而实现对次级输出电流的等效控制。在此基础上,引入无线通信和自修正环节,在保证系统动态响应速度前提下实现了稳定且精准输出特性。仿真与实验结果表明,所提控制策略可在系统存在无线通信延迟情况下维持输出电流稳定。
Since the wireless power transfer(WPT) system contains two separate systems at transmitting and receiving sides,it is normally connected to an additional DC/DC converter with one-sided control,or control methods similar to those of traditional DC/DC converters are adopted with a wireless communication link to build a closed-loop control system.In order to improve the dynamic response speed and stability of the system with wireless communication,a selfcorrecting control method for primary-side resonant current is proposed,which uses fundamental wave analysis to model and analyze the working principle of the LCC-S resonant compensation network.Based on the primary-side fullbridge phase-shift control,it realizes the equivalent control of the secondary-side output current by adjusting the resonant current effectively.Based on this,wireless communication and self-correcting link are introduced to realize stable and accurate output characteristics on the premise of ensuring the dynamic response speed of the system.Simulation and experimental results show that the output current can maintain stable with the proposed control strategy when the system has a certain wireless communication delay.
作者
史智超
荆龙
续文政
吴学智
SHI Zhi-chao;JING Long;XU Wen-zheng;WU Xue-zhi(Bejing Jiaotong University,National Active Distribution Network Technology Research Center,Bejing 100044,China)
出处
《电力电子技术》
CSCD
北大核心
2022年第7期74-77,82,共5页
Power Electronics
基金
中央高校基本科研业务费专项资金(2021RC227)。
关键词
无线电能传输系统
初级谐振电流
次级输出电流
wireless power transfer system
primary-side resonant current
secondary-side output current
作者简介
史智超(1997-),男,硕士研究生,研究方向为电力电子技术、无线电能传输等。;通信作者:续文政(1992-),男,讲师,研究方向为电力电子变换器、无线电能传输等。
