SIDO Buck-Boost变换器的工作模式及稳态增益分析  

Working Modes and Steady-state Gain Analysis of SIDO Buck-Boost Converter

作　　者：谢锋 皇金锋[1,2] 李林鸿 XIE Feng;HUANG Jinfeng;LI Linhong(School of Electrical Engineering,Shaanxi University of Technology,Hanzhong 723001,Shaanxi,China;Shaanxi Key Laboratory of Industrial Automation,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 [2]陕西省工业自动化重点实验室,陕西汉中723001

出　　处：《电气传动》2021年第10期3-9,共7页Electric Drive

基　　金：陕西省工业自动化重点实验室开放课题(SLGPT2019KF01-14);陕西理工大学人才启动基金(SLGQD1808);陕西理工大学研究生新基金项目(SLGYCX2024)。

摘　　要：单电感双输出(SIDO)Buck-Boost变换器由于引入后级功率开关管,其工作模式和稳态增益较传统单输出Buck-Boost变换器复杂的多。为给SIDO Buck-Boost变换器的分析设计提供理论指导,分析了SIDO Buck-Boost变换器的工作模式,将其工作模式分为连续导电模式(CCM)和不连续导电模式(DCM),并求得了CCM与DCM的临界电感。发现CCM SIDO Buck-Boost变换器的输出可分为四种不同的状态,并推导出了两条支路的稳态增益解析式,根据该解析式获得了变换器工作于各种输出状态需满足的条件,同时得到了变换器各支路稳态增益取得极大值的实现条件。实验结果验证了理论分析的正确性。Due to the introduction of post power switch,the working mode and steady-state gain of singleinductor dual-output(SIDO)Buck-Boost converter are more complex than that of traditional single output Buck-Boost converter.In order to provide theoretical guidance for the analysis and design of SIDO Buck-Boost converter,the working mode of SIDO Buck-Boost converter was analyzed.The working mode was divided into continuous conduction mode(CCM)and discontinuous conduction mode(DCM),the critical inductances of CCM and DCM were obtained.It was found that the output of CCM SIDO Buck-Boost converter could be divided into four different states,and the steady-state gain analytical expressions of two branches were derived,according to the analytical expressions,the conditions that need to be satisfied for the converter to work in various output states were obtained.And the conditions that the steady-state gain of each branch of the converter which could obtain the maximum value were obtained.The correctness of the theoretical analysis are verified by the experimental results.

关 键 词：单电感双输出(SIDO)Buck-Boost变换器 工作模式 临界电感 稳态增益 

分 类 号：TM46[电气工程—电器]