一种基于磁集成的零输入电流纹波可扩展高增益DC-DC变换器  

ZERO INPUT CURRENT RIPPLE SCALABLE HIGH GAIN DC-DC CONVERTER BASED ON MAGNETIC INTEGRATION

作　　者：林国庆[1] 曾威 张俊源 Lin Guoqing;Zeng Wei;Zhang Junyuan(Fujian Key Laboratory of New Energy Generation and Power Conversion,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福州大学福建省新能源发电与电能变换重点实验室,福州350116

出　　处：《太阳能学报》2025年第1期601-608,共8页Acta Energiae Solaris Sinica

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

摘　　要：为减小传统DC-DC变换器中存在输入电流纹波大、开关管电压应力高和电压增益低等问题,提出一种基于磁集成的零输入电流纹波可扩展高增益DC-DC变换器。该变换器将磁集成技术与耦合电感纹波抑制技术结合,仅采用一个磁芯元件,既可消除输入电流纹波,又可获得高电压增益,并可形成一系列扩展单元,进一步提升电压增益,减小开关器件的电压应力。详细分析变换器的工作原理、稳态性能、增益扩展、磁集成原理和零输入电流纹波特性。为验证所提变换器相关理论的可行性,搭建一台140 W、24 V/400 V的实验样机,实验结果基本与理论分析一致。High-voltage gain DC-DC converters are widely used in renewable energy systems,and problems such as large input current ripple,high switching tube voltage stress,and low voltage gain are urgently needed to be solved in this type of DC-DC converters.In this paper,a zero-input current ripple scalable high-gain DC-DC converter based on magnetic integration is proposed.The converter combines the magnetic integration technology with the coupled inductor ripple suppression technology,using only one magnetic core element,which can eliminate the input current ripple and obtain high voltage gain,and can form a series of expansion units to further enhance the voltage gain and reduce the voltage stress of the switching devices.In the paper,the operating principle,steady state performance,gain expansion,magnetic integration principle and conditions for realizing the zero input current ripple characteristics of the converter are analyzed in detail.In order to verify the feasibility of the proposed converter theory,a 140 W,24 V/400 V experimental prototype is built,and the experimental results are basically consistent with the theoretical analysis.

关 键 词：DC-DC变换器 增益调节 光伏发电 零纹波 磁集成 扩展单元 

分 类 号：TM46[电气工程—电器]