双闭环控制对Buck类变换器动态响应的影响  

Research on the Influence of Double Closed-loop Control on Dynamic Response of Buck-type Converters

作　　者：徐林[1] 戴伟 耿攀[1] 杨文铁[1] Xu lin;Dai Wei;Gen Pan;Yang Wentie(Wuhan Second Ship Design&Research Institute,Wuhan,430074,China)

机构地区：[1]武汉第二船舶设计研究所,武汉430074

出　　处：《船电技术》2021年第1期11-15,共5页Marine Electric & Electronic Engineering

摘　　要：Buck类变换器最基本的控制方式包括单电压闭环控制以及电压电流双闭环控制。相较于单电压闭环控制,基于输出电压外环、电感电流内环的双闭环控制方式具有稳态性能好、动态响应速度快、抗干扰能力强等优势。本文从阻抗的角度揭示闭环控制对Buck类变换器动态响应特性的影响机理,并进行了比较分析。最后,通过仿真验证了本文提出的阻抗分析法的正确性。The basic control methods of buck-type converters are the single voltage closed-loop control and the voltage current double closed-loop control.Compared with the method of single voltage closed-loop control,the double closed-loop control method based on output voltage outer loop and inductor current inner loop has the advantages of good steady-state performances,fast dynamic response and strong anti-interference ability.In this paper,the influence mechanism of closed-loop control on the dynamic response characteristics of buck-type converters from the point of impedance is expounded,and a comparatively analyses between the two control ways are carried out.Finally,the correctness of the impedance analysis method proposed here is verified by Saber simulation.

关 键 词：双闭环 动态特性 阻抗 输入电压突变 负载电流突变 

分 类 号：TM46[电气工程—电器]