单电感双输出Buck-Boost变换器的终端互补滑模自抗扰控制

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中图分类号：TM46 文献标志码：A 文章编号：1007-449X（2025）07-0119-13

Terminal complementary sliding mode active disturbance rejection control for single-inductor dual-output Buck-Boost converter

HUANG Jinfeng， CHEN Xu， LI Conglin （School of Electrical Engineering，Shaanxi University of Technology，Hanzhong ，China）

Abstract ：Single-inductor double-output converter is an important component of portable equipment.Aiming at the problems of poor anti-disturbance performance and cross-influence of load fluctuations in the two output branches of the single-inductor double-output Buck-Boost converter，a cascaded extended state observer based terminal complementary sliding mode active disturbance rejection control strategy was proposed.Firstly，according to the theory of active disturbance rejection，the main circuit and branch of the converter were fited into the active disturbance rejection control system paradigm respectively，which is transformed into two independent second-order system models，so as to suppress the cross-influence between the two branches. Secondly，a terminal complementary sliding mode controllr was designed to replace the linear controler in the traditional active disturbance rejection control，and a cascade extended state observer was introduced to suppresshigh-frequency noise in the circuit，further improving the estimation accuracy of the observer，and improving the transient performance of the system under disturbance byusing the advantage of nonlinear control strategy. Then，the stability of the control system was proved by Lyapunov theory and Routh criterion. Finally，the MATLAB/Simulink simulation software and the experimental platform were used to verify three different control strategies.The experiments show that the proposed control can well resist the disturbance，suppress the noise and the cros-influence between the two branches，and improve the transient performance of the system.

Keywords： single-inductor dual-output Buck-Boost converter; terminal complementary sliding mode active disturbance rejection control； cross influence ； disturbance immunity

0引言

随着电力电子技术与便携式设备的快速发展，电子器件内部呈现出子模块多样化的发展趋势，而不同的子模块往往需要不同等级的电源电压[1-2]单电感双输出（single-inductor dual-output，SIDO）变换器结构简单、无电磁干扰，仅需要一个电感就可以提供两个不同电压等级的输出电压，一定程度上减小了电源体积，提高了供电效率[3-4]。（剩余15954字）