一种高增益非隔离型耦合电感Boost变换器  

A High-gain Non-isolated Coupled-inductor Boost Converter

作　　者：唐志杨 黎乙利 杨东红 TANG Zhi-yang;LI Yi-li;YANG Dong-hong(Guangdong Ocean University,Zhanjiang 524088,China)

机构地区：[1]广东海洋大学,电子与信息工程学院,广东湛江524088

出　　处：《电力电子技术》2024年第4期122-125,共4页Power Electronics

基　　金：国家自然科学基金(62272109)。

摘　　要：这里提出一种高增益非隔离型耦合电感Boost变换器。该变换器利用耦合电感匝数比可调的特性,使占空比拥有更宽余度的同时实现较高的电压增益。此外,采用无源箝位结构,回收漏感能量,抑制开关管的电压尖峰,从而选取低导通电阻的开关器件,提高变换器的效率。在连续导通模式(CCM)下,详细分析了所提变换器的工作原理和稳态特性。为了验证所提变换器的可行性,搭建了一台输入电压20 V,输出电压200 V,功率100 W的实验样机,测得其最大效率和满载效率分别为95.4%和94.2%。A high-gain non-isolated coupled-inductor Boost converter is proposed.The converter takes advantage of the adjustable turn ratio of the coupled-inductor,so that the duty cycle has a wider redundancy while achieving a higher voltage gain.In addition,the passive clamp structure is used to recover the leakage inductance energy and suppress the voltage spike of the switch tube,so as to select the switch device with low on-resistance and improve the efficiency of the converter.The working principle and steady-state characteristics of the proposed converter are analyzed in detail in continuous conduction mode(CCM).In order to verify the feasibility of the proposed converter,an experimental prototype with an input voltage of 20 V,an output voltage of 200 V and a power of 100 W is built.The maximum efficiency and full load efficiency are measured to be 95.4%and 94.2%,respectively.

关 键 词：变换器 高增益 耦合电感 非隔离型 

分 类 号：TM46[电气工程—电器]