Open AccessNon‐isolated high step‐up DC/DC converter based on a high degrees of freedom voltage gain cell
Author(s) -
Zhu Binxin,
Liu Song,
Huang Yuehua,
Tan Chao
Publication year - 2017
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2017.0166
Subject(s) - forward converter , flyback converter , boost converter , ćuk converter , buck–boost converter , electronic engineering , integrating adc , charge pump , high voltage , buck converter , voltage , topology (electrical circuits) , correctness , power (physics) , computer science , electrical engineering , engineering , control theory (sociology) , capacitor , physics , algorithm , control (management) , artificial intelligence , quantum mechanics
This study presents a non‐isolated high step‐up DC/DC converter based on a high degree of freedom voltage gain cell (HDF‐VGC). Both voltage stress of components and conversion ratio of the proposed converter could be adjusted by the number of the HDF‐VGC, the current stress of the semiconductor devices can also be adjusted by the input phase numbers of the converter. Moreover, the input current of each phase are automatically balanced. These characteristics make the proposed converter very suitable for high‐power and high‐voltage applications, such as offshore wind power high‐voltage DC transmission system. In this study, the topology construction of the proposed converter has been discussed. The operation principle and performance characteristics of the converter are analysed with four input phases and five HDF‐VGCs, then the converter is simulated and a 400 W experimental prototype has been built to verify the correctness of the theoretical analysis.