A novel non-isolated bidirectional DC-DC converter for high voltage gain applications
Abstract
The voltage gain of conventional non-isolated dc-dc converters like the boost converter is limited due to capacitor discharge at near unity duty cycles. Most non-isolated converters can provide a practical gain of around 4. This paper presents a non-isolated bidirectional converter which is capable of providing significantly high gains when operated at duty ratios close to 0.5. The proposed converter topology employs a H bridge configuration with four bidirectional switches. The operation of the proposed converter involves 4 power devices, a single filter inductor and output capacitor. Detailed operation of the converter considering factors such as non-idealities and efficiency is presented in this paper. Digital controller is designed using root locus technique for closed loop operation of the proposed converter. For a given efficiency, the proposed converter achieves better voltage gain (15–20) compared to the existing high gain converters. A MATLAB simulation study is carried to validate the analysis and operation of the converter. Finally, comparison of the proposed converter with the conventional boost converter in terms of gain and efficiency is also presented.
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The Flyback-Push-Pull hybrid converter uses a flyback topology on the primary side for isolation and energy storage, and a push-pull topology on the secondary side for efficiency and power transfer.
“Flyback-Push-Pull Converter [86]: The primary side uses a flyback topology to achieve isolation and energy storage, while the secondary side employs a push-pull topology to improve system efficiency and power transfer capability.”
From Bidirectional DC-DC Converter Topologies for Hybrid Energy Storage Systems in Electric Vehicles: A Comprehensive Review (2025) · cites this paper as [86]
Cites
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A Switched-Capacitor-Based Active-Network Converter With High Voltage Gain
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Wang, J., Wang, B., Zhang, L., Wang, J., Shchurov, N. I., & Malozyomov, B. V. (2022) · Green Energy and Intelligent Transportation · doi:10.1016/j.geits.2022.100010 · Cited by 153 · see citing works
Tong, Y., Salhi, I., Wang, Q., Lu, G., & Wu, S. (2025) · Energies · doi:10.3390/en18092312 · Cited by 60 · see citing works
“• Flyback-Push-Pull Converter [86]: The primary side uses a flyback topology to achieve isolation and energy storage, while the secondary side employs a push-pull topology to improve system efficiency and power transfer capability.”
- Authors
- Reddy, S. R. P., Naik, B. S., & Umanand, L.
- Venue
- 2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)
- Publisher
- IEEE
- Published
- 2017-11
- Pages
- 1-6
- OpenAlex
- W2790011900
- Cited by
- 8
- References
- 9
- Citations by year
- 2025: 1 · 2022: 2 · 2020: 2 · 2019: 1 · 2018: 2
- FWCI
- 1.93
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- Asia-Pacific Power and Energy Engineering Conference (APPEEC) (publishedVersion)
- NOT FOUND REPOSITORY (Indian Institute of Science Bangalore) (acceptedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Multilevel Inverters and Converters
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Keywords
- bidirectional DC-DC converter, non-isolated converter, high voltage gain, H-bridge topology, bidirectional switches, converter efficiency, digital controller
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