电力系统保护与控制2023，Vol.51Issue(23)：92-101,10.DOI:10.19783/j.cnki.pspc.230411
一种适用于燃料电池的新型高升压DC-DC变换器
A novel high step-up DC-DC converter for a fuel cell
摘要
Abstract
The high boost DC-DC converter is an important part of a grid-connected fuel cell.A current-fed boost converter with switched capacitor focusing on low output voltage and soft output characteristics is proposed.First,the proposed converter topology and its working principle in continuous/discontinuous conduction mode are described in detail.Then,the voltage gain and the voltage/current stress of each component are analyzed concretely.The performance is compared with SC-Boost,SL-Boost and other converters.Finally,a 200 W experimental prototype is built to verify the proposed converter's feasibility and the correctness of the theoretical analysis.The proposed converter combines the current-fed structure and the switched capacitor network.It has the advantages of high voltage gain,continuous input current and low ripple.These properties are beneficial in prolonging the service life of the fuel cell.The voltage of the switch is clamped by multiplexing the capacitor-diode(C-D)unit in the switched capacitor.This reduces the voltage stress of the power component.Therefore,the proposed converter is suitable for grid-connected fuel cell systems.关键词
燃料电池/DC-DC变换器/高升压/开关电容/低电流纹波Key words
fuel cell/DC-DC converter/high step-up/switched capacitor/low current ripple引用本文复制引用
魏业文,宁鑫淼,李明,李俊波,白文静..一种适用于燃料电池的新型高升压DC-DC变换器[J].电力系统保护与控制,2023,51(23):92-101,10.基金项目
This work is supported by the Youth Fund of National Natural Science Foundation of China(No.52107108).国家自然科学基金青年基金项目资助(52107108) （No.52107108）
智慧能源技术湖北省工程研究中心开放课题项目资助(2020ZHLY06) （2020ZHLY06）
湖北省重点研发计划项目资助(2020BAB110) （2020BAB110）
