Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Nonisolated Two-Phase Bidirectional DC-DC Converter with Zero-Voltage-Transition for Battery Energy Storage System

  • Lim, Chang-Soon (Mechatronics R&D Center, Samsung Electronics Company, Ltd.) ;
  • Lee, Kui-Jun (Dept. of Electrical Engineering, Korea National University of Transportation)
  • Received : 2017.03.20
  • Accepted : 2017.07.17
  • Published : 2017.11.01
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Abstract

A nonisolated two-phase bidirectional dc-dc converter (NTPBDC) is a very attractive solution for the battery energy storage system (BESS) applications due to the high voltage conversion ratio and the reduced conduction loss of the switching devices. However, a hard-switching based NTPBDC decreases the overall voltage conversion efficiency. To overcome this problem, this paper proposes a novel NTPBDC with zero-voltage-transition (NTPBDC -ZVT). The soft-switching for the boost and buck main switches is achieved by using a resonant cell, which consists of a single resonant inductor and four auxiliary switches. Furthermore, due to the single resonant inductor, the proposed NTPBDC-ZVT has the advantages of simple implementation, reduced size, and low cost. The validity of the proposed NTPBDC-ZVT is verified through experimental results.

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References

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