NDLI: Series Asymmetrical Half-Bridge Converters With Voltage Autobalance for High Input-Voltage Applications

Content Provider	IEEE Xplore Digital Library
Author	Wuhua Li Yuanming He Xiangning He Yaojie Sun Fei Wang Lei Ma
Copyright Year	1986
Abstract	In this paper, an isolated series asymmetrical half-bridge converter (SA-HBC) is proposed to satisfy the high power and high input-voltage requirements. In the proposed converter, two half-bridge modules with series configuration are adopted in the primary side to reduce the switch voltage stress to half of the input voltage. Moreover, the series half-bridge cells share the same transformer and leakage inductance, which simplifies the circuit structure. Zero-voltage-switching transition is achieved for all the active switches by employing the asymmetrical control scheme to reduce the switching losses. Furthermore, the voltages of the input capacitors are automatically balanced without any additional components or complex control methods. In addition, a family of dc-dc converters with series half-bridge structure is explored to give a universal discussion and extensive applications of the proposed contributions for the high input-voltage systems. Finally, a 500-600-V input 48-V output 1-kW prototype operating with 100 kHz switching frequency is built and tested to demonstrate the effectiveness of the proposed SA-HBC converter. The efficiency of 95% at full load is realized.
Sponsorship	IEEE Power Electronics Society
Starting Page	3665
Ending Page	3674
Page Count	10
File Size	949626
File Format	PDF
ISSN	08858993
Volume Number	28
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Inductance Switches Zero voltage switching MOSFETs Zirconium Stress series asymmetrical half-bridge converter (SA-HBC) High voltage applications and voltage autobalance ability
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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