摘要
针对磁耦合谐振式LCC-S无线充电系统工作过程中易受外界或自身参数扰动的影响导致输出电流、电压偏离目标值的问题,以及如何快速准确地对扰动情况做出反应,提出一种基于自抗扰控制ADRC(active disturbance rejection control)的副边恒流恒压二段式闭环控制方法。首先,通过电路分析研究了LCC-S型谐振网络的输出特性与系统参数的关系;其次,为实现闭环精准调控系统输出,建立副边Buck变换器的状态方程模型,并根据模型设计ADRC中跟踪微分器、扩张状态观测器和非线性状态误差反馈;最后,搭建基于ADRC的无线充电实验平台,在多参数扰动下比较ADRC控制器与PI控制器的控制效果,结果表明,ADRC控制器表现出更好的动态调节能力。
Aimed at the problem that the output current and voltage from a magnetic coupling resonant LCC-S wireless charging system are easily affected by external disturbance or its own parameter disturbance during its working process,as well as the problem of how to respond to disturbances quickly and accurately,a secondary-side two-stage closed-loop control method of constant-current and constant-voltage based on active disturbance rejection control(ADRC)is proposed.First,the relationship between the output characteristics of LCC-S resonant network and system parameters is studied through the circuit analysis.Second,the state equation model of a secondary-side Buck converter is established to achieve the closed-loop precise regulation of system output,and the tracking differentiator,extended state observer and nonlinear state error feedback in ADRC are designed accordingly.Finally,an experimental platform of wireless charging based on ADRC was built.The control effect is compared between the ADRC and PI controllers under multi-parameter disturbance,and results show that the former shows a better dynamic regulation capability.
作者
苏建强
任凯斌
刘利强
齐咏生
SU Jianqiang;REN Kaibin;LIU Liqiang;QI Yongsheng(College of Electric Power,Inner Mongolia University of Technology,Hohhot 710049,China)
出处
《电源学报》
CSCD
北大核心
2023年第6期111-119,共9页
Journal of Power Supply
基金
内蒙古自治区科技计划资助项目(2021GG0256)
内蒙古自治区直属高校基本科研业务费资助项目(JY20230030)。
关键词
无线充电
LCC-S谐振网络
闭环控制
自抗扰控制
Wireless charging
LCC-S resonant network
closed-loop control
active disturbance rejection control(ADRC)
