一种交错并联高增益软开关DC-DC变换器  

An Interleaved High Gain Soft Switching DC/DC Converter

作　　者：何恩义 HE En-yi(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电气开关》2024年第1期19-23,共5页Electric Switchgear

基　　金：晋江市福大科教园区发展中心科研项目(2019-JJFDKY-37)。

摘　　要：提出了一种应用于新能源发电系统中的交错并联高增益软开关DC-DC变换器。该变换器采用交错并联结构,利用耦合电感与二极管电容网络相结合,以提高电压增益,引入ZVT辅助电路,实现了两个主开关管零电压软开关和一个辅助开关管的零电流软开关。变换器具有低输入电流纹波、高电压增益、高效率和低电压应力等优点。详细介绍了变换器的工作原理、电压增益特性、开关器件电压应力等。最后,搭建了一台200W的实验样机验证了理论分析的正确性。An interleaved high gain soft switching DC-DC converter for new energy generation systems is presented.The converter adopts a staggered parallel structure,and combines the coupled inductance with the diode capacitance network to improve the voltage gain.The ZVT auxiliary circuit is introduced to realize the zero-voltage soft switch of two main switching tubes and zero-current soft switch of one auxiliary switching tube.The converter has the advantages of low input current ripple,high voltage gain,high efficiency and low voltage stress.The working principle,voltage gain characteristic and voltage stress of switching device are introduced in detail.Finally,a 200W prototype was built to verify the correctness of the theoretical analysis.

关 键 词：交错并联 高增益 耦合电感 ZVT 软开关 

分 类 号：TN624[电子电信—电路与系统]