一种输入电流连续的新型高增益DC-DC升压变换器  

A novel high gain DC-DC boost converter with continuous input current

作　　者：岳舟 刘小荻 姚绍华 周勇 YUE Zhou;LIU Xiaodi;YAO Shaohua;ZHOU Yong(College of Energy,Mechanical and Electrical Engineering,Hunan University of Humanities,Science and Technology,Loudi 417000,China)

机构地区：[1]湖南人文科技学院,能源与机电工程学院,湖南娄底417000

出　　处：《电力系统保护与控制》2022年第6期125-134,共10页Power System Protection and Control

基　　金：国家自然科学基金项目资助(61702182);湖南省教育厅优秀青年项目资助(20B328);湖南省创新训练项目资助(S202110553023)。

摘　　要：高增益DC-DC变换器正越来越多地应用于太阳能光伏或其他可再生能源发电系统。良好的稳态和动态性能以及更高的效率,是为上述应用选取变换器的先决条件。为此,提出一种高增益DC-DC升压变换器。首先,详细阐述了该新型变换器的拓扑结构与工作原理,在此基础上,对其电路参数进行了设计。然后,将所提变换器与最近提出的其他类似变换器在各种性能参数上进行了比较。最后,采用Matlab软件建立了系统仿真模型,并研制了实验样机。仿真和实验结果验证了理论分析的正确性。所提变换器只使用一个功率开关,具有连续的输入电流,同时能够降低开关器件间的电压应力。占空比的工作范围更宽,并且在较低的占空比下可以获得较高的电压增益。输入电流连续是DC-DC变换器的一个理想特性,所提变换器非常适合太阳能、光伏应用。High gain DC-DC converters are increasingly being used in solar PV and other renewable generation systems.Satisfactory steady-state and dynamic performance,along with higher efficiency,is a prerequisite for selecting a converter for these applications.This paper proposes a high gain DC-DC boost converter.First,the circuit topology and the working principle are discussed in detail.The circuit parameters are designed.Then,the proposed converter is compared with other similar recently proposed converters on various performance parameters.Finally,a system simulation model is established by Matlab software,and the experimental prototype is developed.The simulation and experimental results verify the correctness of the theoretical analysis.The proposed converter only uses one power switch,which has continuous input current and can reduce the voltage stress between switching devices.The working range of duty cycle is wider,and higher voltage gain can be obtained at lower duty cycle.Continuous input current is an ideal characteristic of a DC-DC converter.This makes it very suitable for solar photovoltaic applications.

关 键 词：连续导通模式 分布式发电 高增益 DC-DC升压变换器 电压应力 

分 类 号：TM46[电气工程—电器]