双开关二次型结构的耦合电感高增益DC-DC变换器  

Dual-switch Quadratic High-gain DC-DC Converter with Coupled Inductor

作　　者：程诗伟 赵世伟[1] CHENG Shiwei;ZHAO Shiwei(School of Electric Power Engineering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学电力学院,广州510641

出　　处：《电源学报》2024年第4期29-39,共11页Journal of Power Supply

基　　金：广东省自然科学基金资助项目(2018A0303130221)。

摘　　要：在能源危机和环境问题的背景下,高电压增益的DC-DC变换器成为利用可再生新能源不可或缺的环节。基于此,提出1种双开关二次型结构,使传统的二次型Boost变换器的电压增益得到有效提升,且降低了开关管的电流应力。结合开关电容和耦合电感,提出1种电压增益极高的双开关二次型结构耦合电感高增益DC-DC变换器。该变换器具有电压增益高、2个开关管同相、开关管和输出二极管电压应力低和多个二极管实现零电流关断的优点。详细分析了变换器的运行原理和稳态性能,包括电压增益推导、元器件电压电流应力等。制作了1款120 W样机,验证了理论分析的正确性和变换器的可行性。Under the background of energy crisis and environmental issues,the high-gain DC-DC converter is indispensable in renewable energy applications.A dual-switch quadratic structure is proposed to enhance the voltage gain of the traditional quadratic boost converter while reducing the current stress of switches.On this basis,by combining the switched capacitors and a coupled inductor,a dual-switch quadratic high-gain DC-DC converter with a couple inductor is put forward.This converter has advantages such as a very high voltage gain,a pair of switches with the same phase,low voltage stress of switches and output diode,and zero-current switching off in many diodes.The operating principle and steady-state performance of the converter are analyzed in detail,including the voltage gain derivation and the voltage and current stresses of components.Finally,a 120 W prototype was fabricated to verify the theoretical analysis and the feasibility of the converter.

关 键 词：高增益变换器 耦合电感 二次型Boost 开关电容 

分 类 号：TM46[电气工程—电器]