NDLI: High step-up converter with passive lossless clamp circuit and switched-capacitor: Analysis, design, and experimentation

Content Provider	IEEE Xplore Digital Library
Author	Liangzong He Jiazhi Lei
Copyright Year	2013
Description	Author affiliation: Dept. Power Electron., Huazhong Univ. of Sci. & Technol., Wuhan, China (Jiazhi Lei) \|\| Dept. Mech. & Eng., Xiamen Univ., Xiamen, China (Liangzong He)
Abstract	In the paper, a novel high step-up dc-dc converter with coupled-inductor and switched-capacitor is proposed for sustainable energy system. The converter utilizes two-stage switched-capacitors as voltage sources to extend the voltage gain and auto-balance two branches current. Besides, the voltage stress on the main switches is reduced further due to the voltage distributed on the switched-capacitors. The Winding-coupled inductors work in fly-back or forward mode at different operation stages, which extends the voltage gain and make use of the magnetic as possible to improve the power density. The main switches are turned off under zero voltage switching(ZVS) condition because of a passive clamp circuit and turned on under zero current switching (ZCS) condition due to the coupled inductor inherent leakage. Additionally, the diode reverse-recovery problem is alleviated because its current falling rate is controlled by the leakage inductance. Thus, the efficiency can be further improved. Then, the operating principle and performance of the converter are discussed in detail. Finally, a prototype circuit with 20-V input voltage, 200-V output voltage and 300-W output power is implemented to verify the performance of the proposed converter.
Sponsorship	IEEE Power Electron. Soc.
Starting Page	2070
Ending Page	2077
File Size	1362528
Page Count	8
File Format	PDF
ISBN	9781467343541
ISSN	10482334
e-ISBN	9781467343558
e-ISBN	9781467343534
DOI	10.1109/APEC.2013.6520581
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-03-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switched-capacitor Current-balance Coupled inductor Interleaved boost converter
Content Type	Text
Resource Type	Article

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