Buck型变换器预设时间自适应反演控制  

Predefined-time adaptive backstepping control for Buck converter

作　　者：陈强[1] 王满意 南余荣[1] CHEN Qiang;WANG Manyi;NAN Yurong(College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023)

机构地区：[1]浙江工业大学信息工程学院,杭州310023

出　　处：《高技术通讯》2024年第3期302-311,共10页Chinese High Technology Letters

基　　金：国家自然科学基金面上项目(61973274);浙江省自然科学基金(LY20E070007,LZ22F030007)资助项目。

摘　　要：针对存在负载变化和外界干扰的Buck型变换器系统,提出一种预设时间自适应反演控制方法,给出系统调节时间最小上界值与控制参数的直接关系,减少调参复杂度。构造二次分式型虚拟控制器,避免虚拟控制器微分引起的奇异性问题,并确保输出电压在预设时间内收敛至参考电压附近邻域。仿真和实验结果验证了所提方法的有效性。A predefined-time adaptive backstepping control scheme is proposed for Buck converter system aiming at load variation and external interference,which provides the direct relationship between system’s adjustable time and control parameters.It reduces the complexity of parameter setting.To avoid the singularity problem caused by the differential of the virtual controller,a quadratic fractional virtual controller is constructed to ensure that the output voltage converges to the reference voltage adjacency region within a predefined time.Finally,the simulation and experimental results show the effectiveness of the proposed control scheme.

关 键 词：预设时间 自适应控制 反演控制 二次分式型 虚拟控制器 

分 类 号：TM46[电气工程—电器] TP273[自动化与计算机技术—检测技术与自动化装置]