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http://dx.doi.org/10.6113/JPE.2012.12.3.439

Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications  

Meng, Tao (School of Electrical Engineering and Automation, Harbin Institute of Technology)
Ben, Hongqi (School of Electrical Engineering and Automation, Harbin Institute of Technology)
Wei, Guo (School of Electrical Engineering and Automation, Harbin Institute of Technology)
Publication Information
Journal of Power Electronics / v.12, no.3, 2012 , pp. 439-447 More about this Journal
Abstract
In this paper, an input-series auxiliary power supply scheme is proposed, which is suitable for high input voltage and multiple-output applications. The power supply scheme is based on a two-transistor forward topology, all of the series modules have a common duty ratio, all the switches are turned on and off simultaneously, and the whole circuit has a single power transformer. It does not require an additional controller but still achieves efficient input voltage sharing (IVS) for each series module through its inherent transformer-integration strategy. The IVS process of this power supply scheme is analyzed in detail and the design considerations for the related parameters are given. Finally, a 100W multiple-output auxiliary power supply prototype is built, and the experimental results verify the feasibility of the proposed scheme and the validity of the theoretical analysis.
Keywords
Common duty ratio; Input series; Input voltage sharing (IVS); Magnetic integration; Multiple-output auxiliary power supply;
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Times Cited By KSCI : 2  (Citation Analysis)  (Related Records In Web of Science)
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