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This content will become publicly available on November 1, 2026

Title: Design Criteria of Non-Isolated Bidirectional DC-DC Converters: A Review
Battery energy storage systems are widely used for renewable power generation and electric transportation systems. Bidirectional DC-DC converters (BDCs) are key components in such systems, enabling bidirectional power flow in battery charging and discharging modes. BDCs can be categorized into isolated and non-isolated. Non-isolated BDCs have lower volume, weight, and power losses, suitable for compact structures without needing galvanic isolation. In this paper, a comprehensive literature review is conducted for non-isolated BDCs, covering soft switching, current ripple reduction, high voltage gain and resiliency techniques. Soft switching aims to reduce switching losses and improve efficiency, including auxiliary circuits and non-auxiliary methods, such as interleaved structures, phase-shift modulation, and synchronous rectification. Current ripple reduction focuses on capacitive loop configurations, interleaved structures, and coupled inductor-based methods. Batteries are low-voltage power sources, BDCs can increase the output voltage to a level required by the applications through an appropriate voltage gain, and high voltage gain techniques include capacitor-based, magnetic-based, and combined networks, and mixed structures. Resiliency is explored to ensure reliable operations under adverse conditions. This review provides valuable insights into developing more efficient, reliable, and high-performance BDCs, addressing the evolving demands of modern energy systems. Future research directions in non-isolated BDCs are recommended in this paper.  more » « less
Award ID(s):
2330582
PAR ID:
10641476
Author(s) / Creator(s):
 ;  
Publisher / Repository:
IEEE Xplore
Date Published:
Journal Name:
IEEE Transactions on Industry Applications
Volume:
61
Issue:
6
ISSN:
0093-9994
Page Range / eLocation ID:
8771 to 8798
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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