一种非对称交错并联高增益DC-DC变换器  

An asymmetric cross-parallel high step-up DC-DC converter

作　　者：乔文转 张少如[1,2] 张蒙蒙 赵志霄 QIAO Wenzhuan;ZHANG Shaoru;ZHANG Mengmeng;ZHAO Zhixiao(College of Physics Science and Information Engineering,Hebei Normal University,Shijiazhuang 050024,China;Industrial Energy Saving and Power Quality Control of Collaborative Innovation Center,Anhui University,Hefei 230601,China;School of Electrical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]河北师范大学物理科学与信息工程学院,河北石家庄050024 [2]安徽大学工业节电与电能质量控制省级协同创新中心,安徽合肥230601 [3]河北科技大学电气工程学院,河北石家庄050018

出　　处：《电力系统保护与控制》2019年第16期151-158,共8页Power System Protection and Control

基　　金：河北省重点研发计划项目资助(18214302D,16211806D);河北省高等学校科学技术研究重点项目资助(ZD2017044);安徽省工业节电与电能质量控制协同创新中心开放课题资助(KFKT201504);研究生科研基金项目资助(CXZZSS2018070)~~

摘　　要：针对传统DC/DC变换器存在的电压增益有限、开关管等器件承受电压应力较大等问题,提出了一种非对称交错并联高增益DC-DC变换器。该变换器在二次型Boost电路的基础上引入开关电感三端网络形成非对称交错并联电路,提高了变换器的增益,降低了元器件的电压应力和电流应力。将开关电容引入三端增益电路进一步提高了变换器的增益。详细分析了该变换器在不同占空比下单周期内的工作模态,建立电路系统的直流稳态模型,并推导出电路的稳态电压增益。最后,通过Matlab仿真及实验验证了方案的正确性。The traditional DC/DC converter has some shortcomings,such as limited voltage gain and large voltage stress on switching tubes,diodes and other devices.An asymmetric cross-parallel high step-up DC-DC converter is proposed.On the basis of the second type Boost circuit,the switching inductance three-terminal network is introduced to form the asymmetric cross-parallel circuit,which raises the gain of the converter and reduces the voltage stress and current stress on the components.The gain of the converter is further raised by introducing the switching capacitance into the three-terminal gain circuit.The operating modes of the converter under different duty cycle are analyzed in detail,the DC steady-state model of the circuit system is established,and the steady-state voltage gain of the circuit is derived.Finally,the correctness of the scheme is verified by Matlab simulation and experiment results.

关 键 词：交错并联 二次型Boost变换器 高增益 

分 类 号：TM4[电气工程—电器]