V^2控制Cuk变换器建模与瞬态性能分析  

Modeling and Transient Performance Analysis of V^2 Controlled Cuk Converter

作　　者：周国华[1] 谭伟 周述晗 王悦 毛诗琴 Zhou Guohua;Tan Wei;Zhou Shuhan;Wang Yue;Mao Shiqin(Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle Ministry of Education School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,China;State Grid Guang’an Power Supply Company,Guang’an 638000,China)

机构地区：[1]西南交通大学电气工程学院磁浮技术与磁浮列车教育部重点实验室,成都611756 [2]国网四川省电力公司广安供电公司,广安638000

出　　处：《电工技术学报》2021年第4期820-830,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(61771405);四川省科技计划(2019JDTD0003);中央高校基本科研业务费专项资金(2682019YQ02)资助项目。

摘　　要：将具有快速瞬态响应的V^2控制技术应用于Cuk变换器,分析了V^2控制Cuk变换器工作于电感电流连续导电模式(CCM)的原理。利用时间平均等效建模方法,推导包含输出电容等效串联电阻(ESR)的CCM Cuk变换器主电路传递函数。在此基础上,建立V^2控制和峰值电流控制CCM Cuk变换器的精确小信号模型,详细推导控制-输出传递函数及输出阻抗,并从频域角度对比分析V^2控制和峰值电流控制CCM Cuk变换器的瞬态特性。建立V^2控制和峰值电流控制CCM Cuk变换器的时域仿真模型和实验电路,通过仿真和实验对比分析两种变换器的稳态和瞬态性能。研究结果表明:V^2控制与峰值电流控制CCM Cuk变换器具有相同的稳态性能;相比于峰值电流控制,V^2控制CCM Cuk变换器具有更快的负载响应速度。V^2 control technique with fast transient response is applied to Cuk converter,and the principle of V^2 controlled Cuk converter operating in continuous conduction mode(CCM)is analyzed.The time-average equivalent circuit modeling approach considering equivalent series resistance(ESR)of output capacitor is used to derive the transfer functions of CCM Cuk converter.Subsequently,the accurate small signal models of V^2 controlled CCM Cuk converter and peak current controlled CCM Cuk converter are established,and the control-output transfer function and output impedance are further deduced.The transient characteristics of the two converters are compared in frequency domain,and their time-domain simulation models and experimental circuits are established.Then,the steady-state and transient performance of the two converters are analyzed and compared.The results show that compared with peak current controlled CCM Cuk converter,V^2 controlled CCM Cuk converter shares the same steady-state performance,but has better performance in transient response speed.

关 键 词：V^2控制 CUK变换器 小信号模型 瞬态性能 

分 类 号：TM46[电气工程—电器]