NDLI: High step-up DC–DC converter with three-winding-coupled-inductor and output capacitor in series for clean energy

Content Provider	IET Digital Library
Author	Xian, Richang Liu, Xinghua Li, Fei Yao, Yu Geng, Ning Yang, Jing Liu, Lin Sun, Yan Yue, Zengwei Cui, Chuan Yu, Yang Sun, Jingcheng Gao, Peng Xue, Qicheng Zhu, Feng Ji, Suyun Sun, Xuefeng
Abstract	A novel high step-up DC–DC converter with a three-winding-coupled-inductor and an output capacitor in series is proposed in this study. By charging for two windings of dotted terminal connection in series by input source, the proposed converter can achieve a higher gain by using smaller turns ratios when the active switch is turned on. The passive clamping circuits are introduced for not only recycling leakage energy but also alleviating voltage spike on the main switch effectively. Meanwhile, the reverse-recovery problem of the diode is alleviated by the leakage inductor. Thus, the efficiency can be improved. In addition, output capacitors are in series to provide energy so that the volume of the output capacitor is reduced. The operating principle and steady-state analyses of the proposed converter are discussed in detail. Then, the performance of the proposed converter is compared with existing converters. Finally, a prototype circuit is built with a 40-V input voltage, 380-V output voltage, and 400-W output power to verify the performance of the proposed converter.
Starting Page	1087
Ending Page	1093
Page Count	7
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 5, May (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5815
Journal	IET Power Electronics
Publisher Date	2019-01-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Capacitor Clean Energy DC-DC Power Converter Dotted Terminal Connection Inductor Leakage Inductor Novel High Step-up DC–DC Converter Output Capacitor Passive Clamping Circuit Passive Filter Passive Network Power 400 W Power Electronics Power Supply Recycling Leakage Energy Reverse-recovery Problem Steady-state Analysis Supervisory Circuit Switching Converter Three-winding-coupled-inductor Voltage 380 V Voltage 40 V Voltage Spike
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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