新型高增益耦合电感组合Sepic变换器  

Novel High-gain Coupled Inductor Combination Sepic Converter

作　　者：荣德生[1] 黄鹤 孙瑄瑨 RONG Desheng;HUANG He;SUN Xuanjin(Faculty of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《电源学报》2022年第1期46-55,共10页Journal of Power Supply

基　　金：辽宁省自然科学基金面上资助项目(2019JH3/10300205);辽宁省自然科学基金资助项目(201602359)。

摘　　要：为提高Sepic变换器的电压增益,将Sepic变换器与二极管-电容倍压单元进行组合,同时引入耦合电感结构,提出一种新型高增益耦合电感组合Sepic变换器。该变换器在提升电压增益的同时,保留了Sepic变换器输入电流连续的特点,利用Sepic结构中的二极管-电容支路作为无源箝位吸收回路,吸收漏感能量,降低开关管的电压应力。分析了变换器的工作原理,推导出变换器的各项性能参数,对比变换器与其他高增益Sepic变换器的各项性能,给出了组合思想应用于其他基本变换器的应用拓展。最后,在实验室平台上搭建一台150 W的实验样机,验证了理论分析的正确性。To improve the voltage gain of a Sepic converter,the converter is combined with a diode-capacitor multiplier unit.At the same time,the structure of a coupled inductor is introduced,and a novel kind of high-gain coupled inductor combination Sepic converter is proposed,which retains the characteristics of continuous input current while improving the voltage gain.Meanwhile,the diode-capacitor branch in the Sepic structure is used as a passive clamping absorption circuit to absorb the leakage inductance energy,thus reducing the voltage stress of the switching tube.The working principle of the converter is analyzed,its performance parameters are deduced,its performance is compared with those of other high-gain Sepic converters,and the application expansion of the combination idea to other basic converters is also given.Finally,a 150 W experimental prototype was built on the laboratory platform to verify the theoretical analysis.

关 键 词：SEPIC变换器 耦合电感 高增益 无源钳位 

分 类 号：TM46[电气工程—电器]