电源学报2024，Vol.22Issue(2)：36-46,11.DOI:10.13234/j.issn.2095-2805.2024.2.36
一种低电流纹波高增益软开关直流变换器
Soft-switching DC-DC Converter with Low Current Ripple and High Gain
摘要
Abstract
A soft-switching DC-DC converter with low current ripple and high gain is proposed,which can be applied to new energy generation systems.Based on the conventional interleaved Boost converter,the proposed converter can achieve high gain by introducing a coupled inductor,diodes and a capacitor Boost unit.The coupled inductor transmits energy during the entire switching cycle,thus improving the utilization rate of magnetic core.The input Boost stage works in an interleaved mode,and the current ripple of the two-phase inductor can cancel each other,so as to obtain a lower input current ripple.Due to the existence of leakage inductance of the coupled inductor,the reverse recovery problem of rectifier diodes are alleviated.Meanwhile,an active clamp circuit is adopted to absorb the leakage inductance energy,thereby achieving the zero-voltage soft-switching of all switches,restraining the turn-off voltage spike of switches,and improving the converter's conversion efficiency.The working principle,circuit characteristics and soft-switching realization method of the converter are analyzed in detail.Finally,a 200 W experimental prototype was built to verify the theoretical analysis.关键词
新能源发电/低电流纹波/高增益/零电压软开关Key words
New energy generation/low current ripple/high gain/zero-voltage soft-switching分类
信息技术与安全科学引用本文复制引用
王建,林国庆..一种低电流纹波高增益软开关直流变换器[J].电源学报,2024,22(2):36-46,11.基金项目
福建省科技计划资助项目(2015H0017) （2015H0017）
晋江市福大科教园区发展中心资助项目(2019-JJFDKY-37)This work is supported by Fujian Science and Technology Pro-ject under the grant 2015H0017 （2019-JJFDKY-37）
Development Center of Science and Education Park of Fuzhou University in Jinjiang City under the grant 2019-JJFDKY-37 （）
