基于改进前馈自抗扰的SIDO Boost变换器复合控制  

Compound control of SIDO Boost converter based on improved feedforward active disturbance rejection

作　　者：皇金锋[1] 李聪林 陈旭 HUANG Jinfeng;LI Conglin;CHEN Xu(School of Electrical Engineering,Shaanxi University of Technology,Hanzhong 723001,Shaanxi China)

机构地区：[1]陕西理工大学电气工程学院,陕西汉中723001

出　　处：《华中科技大学学报(自然科学版)》2025年第1期48-55,共8页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：陕西省自然科学研究项目(2023-JC-YB-442).

摘　　要：为提升SIDO Boost变换器的暂态性能和稳定性,提出了一种基于改进前馈自抗扰控制器的复合控制策略.首先,针对该变换器存在非最小相位影响,结合该变换器可降压的特性,利用输出重定义法,设计了a支路双环控制降压输出,b支路单环控制升压输出的总体控制策略;然后,针对交叉耦合影响和扰动问题提出了改进前馈自抗扰控制器,引入了负载前馈误差信号,增加系统抗扰性,加快响应速度;同时设计了改进扩张状态观测器,来提高观测精度和响应速度,并改进自适应超螺旋滑模反馈控制律的不连续函数来进一步抑制系统抖振;接着,利用李雅普洛夫理论证明了反馈控制律的稳定性;最后,利用实验平台进行了实验,实验结果验证了所提控制策略的有效性和优越性.In order to improve the transient performance and stability of the SIDO Boost converter,a composite control strategy based on improved feedforward active disturbance rejection controller was proposed.Firstly,aiming at the non-minimum phase effect of the converter,combined with the step-down characteristics of the converter,the overall control strategy of a-branch doubleloop control step-down output and b-branch single-loop control step-up output was designed by using the output redefinition method.Secondly,an improved feed forward active disturbance rejection controller was proposed for cross-coupling influence and disturbance problems.The load feed forward error signal was introduced to increase the system immunity and speed up the response speed.At the same time,an improved extended state observer was designed to improve the observation accuracy and response speed.The discontinuous function of the adaptive super-twisting sliding mode feedback control law was improved to further suppress the system chattering.Then,the stability of the feedback control law was proved by Lyapunov theory.Finally,the experimental platform was used for experimental verification.The experimental results show the effectiveness and superiority of the proposed control strategy.

关 键 词：SIDO Boost变换器 非最小相位特性 交叉耦合影响 前馈自抗扰控制 李雅普洛夫理论 

分 类 号：TM61[电气工程—电力系统及自动化]