具有高带宽的Boost变换器输出电流单闭环控制方法  

Single Closed-Loop Control Method for Output Current of Boost Converter with High Bandwidth

作　　者：宋双成[1] 唐佳棋 李海悦 张千帆[1] SONG Shuangcheng;TANG Jiaqi;LI Haiyue;ZHANG Qianfan(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电工技术》2021年第11期61-64,70,共5页Electric Engineering

摘　　要：受Boost变换器固有的右半平面零点(Right-Half-Plane Zero,RHPz)的限制,输出量闭环带宽难以提高,输出量的波动程度因输入电压扰动而较大,这个缺点在动态无线供电应用中体现得更明显。为此提出一种Boost输出电流的单闭环控制方法,仅需给反馈量引入一个电感电流微分项,不仅实现简单而且具有更高的带宽。仿真和试验结果表明,提出的单闭环控制方法具有更优的暂态性能,和传统单闭环方法相比,音频易感度幅值降低了12 dB,因此具有更低的输出电流波动率。Due to the inherent right-half-plane zero in Boost control model,it is difficult to increase the output closed-loop bandwidth and output fluctuation is large owing to the input voltage disturbance.This disadvantage gets more obvious in dynamic wireless charging applications.For this reason,a single closed-loop control method of Boost output current is proposed,which only needs to introduce an inductor current differential term to the feedback quantity,which is not only simple to implement but also has a higher bandwidth.Simulation and experimental results show that the proposed single-loop control scheme has better transient performance.Compared with the traditional single-loop control scheme,the magnitude of audio susceptibility is reduced by 12 dB,indicating a smaller fluctuation of output current.

关 键 词：动态无线供电 Boost输出电流 高带宽 

分 类 号：TM46[电气工程—电器]