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http://dx.doi.org/10.5916/jkosme.2017.41.1.76

Improved DC-DC Bidirectional Converter  

Kim, Seong-Hwan (Division of Marine System Engineering, Korea Maritime and Ocean University)
Hur, Jae-Jung (Offshore Safety Training Team, Korea Institute of Maritime and Fisheries Technology)
Jeong, Bum-Dong (Maritime Safety Training Team, Korea Institute of Maritime and Fisheries Technology)
Yoon, Kyoung-Kuk (R&D Center of SeaNet Co., Ltd.)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.41, no.1, 2017 , pp. 76-82 More about this Journal
Abstract
Since the introduction of electronically controlled engines and electric propulsion ships, the need for an uninterruptible power supply for emergency power supply devices that use batteries has gained importance. The bidirectional converter in such emergency power supply devices is a crucial component. This paper proposes, a topology for an improved DC-DC bidirectional converter that is characterized by a high voltage conversion ratio and low voltage stress of switches. To confirm the performance of the converter, a computer simulation was executed with PSIM software. The conversion ratio of the proposed converter was found to be four times higher than the conventional boost converter in step-up mode and one-fourth that of the conventional buck converter in step-down mode, and the voltage stress of the switches was one-fourth of the high-side voltage. Moreover, the proposed converter was confirmed to be able to distribute equal currents between two interleaved modules without using any extra current-sharing control method because of the charge balance of its blocking capacitors.
Keywords
Uninterruptible power supply; DC-DC bidirectional converter; Conversion ratio; PSIM;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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