Voltage-boost resonant LLC-converter with bipolar output voltage
DOI: 10.21293/1818-0442-2025-28-3-155-162
Abstract: This paper presents a comparative analysis of voltage-boost and isolated topologies of a resonant LLC-converter with a bipolar output voltage. It is shown that the voltage-boost topology can reduce size and weight and decrease transformer losses while maintaining the required output parameters under load variations. An assessment of the root mean square (RMS) current values in the resonant circuits, which determine static losses, revealed a 1.5-fold increase in the resonant circuit current of the voltage-boost topology compared to the isolated counterpart. The results demonstrate a significant improvement in size‑and‑weight metrics while maintaining comparable energy efficiency of the proposed converter relative to conventional isolated solutions.
Keywords: resonant LLC-converter, push-pull converter, autotransformer, ZVS, soft switching
For citation:
Nurhanov A., Osipov A. V., Kalashnikov I. V., Poddubnyy M. M. Voltage-boost resonant LLC-converter with bipolar output voltage. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2025, vol. 28, no. 3, pp. 155–162. DOI: 10.21293/1818-0442-2025-28-3-155-162
Authors and copyright holders:
- Nurhanov A. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- Osipov A. V. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- Kalashnikov I. V. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- Poddubnyy M. M. , Tomsk State University of Control Systems and Radioelectronics (Tomsk, Russia)
- 1. Osipov A.V., Shkol'nyy V.N., Shinyakov Yu.A., Yaroslavtsev E.V., Shemolin I.S. [Series Resonant Converter for discharge of Battery Power Supply Systems]. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2017, vol. 20, no. 2, pp. 103–110 (in Russ.).
- 2. Zhang G., Zhang X., Fu C., Qi B. Application of Improved Linear Active Disturbance Rejection Control in LLCConverters for Battery Formation. Proceedings of the 3rd International Conference on Energy Engineering and Power Systems (EEPS). Guangzhou, China, IEEE PES, 2023, pp. 680–684.
- 3. Wu S.-T., Han Ch.-H. Design and implementation of full-bridge LLC converter with wireless power transfer for dual mode output load. IEEE Access, 2021, vol. 9, pp. 120392–120406.
- 4. Rocha J., Amin S., Coelho S., Rego G., Afonso J.L., Monteiro V. Design and Implementation of a DC-DC Resonant LLC Converter for Electric Vehicle Fast Charges. Energies, 2025, vol. 18, no. 1099, pp. 1–26.
- 5. Israr R., Samuel P. Study and Design of DC-DC LLCFull Bridge Converter for Electric Vehicle Charging Application. Proceedings of the 5th International Conference on Power, Control & Embeded Systems (IPSCES). Allahabad, India, IEEE, 2023, pp. 1–6. DOI: 10.1109/ICPCES57104.2023.10076234.
- 6. Belov G.A., Pavlova A.A. Analiz rezonansnogo preobrazovatelya postoyannogo napryazheniya tipa LLC metodom osnovnoi garmoniki [LLC type resonant DC-DC converter analysis by fundamental harmonic method] Prakticheskaya silovaya elektronika, 2018, no. 1, pp. 2–10 (in Russ.).
- 7. Stolyarova A.A., Mikhalchenko S.G., Apasov V.I. [Mathematical model of the LLC resonant converter] Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2020, vol. 23, no. 3, pp. 86–91 (in Russ.).
- 8. Gupta P.P., Kumar N., Nangia U. Design and Analysis of LLC Resonant Converter and CCCV Topology for Battery Charging. Proceedings of the 2nd Asian Conference on Innovation in Technology (ASIANCON). Ravet, India, IEEE, 2022, pp. 1–5. DOI: 10.1109/ASIANCON55314.2022.9909135.
- 9. Rocha J., Amin S., Rego G., Monteiro V. Step-by-Step Design of a LLC Resonant Converter for EV Fast Charging Applications. Proceedings of the 8th International Young Engineers Forum on Electrical and Computer Engineering (YEFECE). Caparica / Lisbon, Portugal, IEEE, 2024, pp. 45–50. DOI: 10.1109/YEF-CE62614.2024.10625506.
- 10. Dayling S., Lihui C., Yu Y., Mian D., Chong W., Wenhua G. A Constant Current Digital Control Method for Primary-Side Regulation Half-Bridge LLC Resonant Converter. Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE). Nashville, TN, USA, IEEE, 2023, pp. 3104–3108. DOI: 10.1109/ECCE53617.2023.10362727.
- 11. Bhuvaneswari C., Babu R.S.R. A review on LLCResonant Converter. Proceedings of 2016 International Conference on Computation of Power, Energy Information and Communication (ICCPEIC). Melmaruvathur, India, IEEE, 2016, pp. 620–623. DOI: 10.1109/iccpeic.2016.7557268.
- 12. Shemolin A.S., Osipov A.V., Kalashnikov I.V., Zazygin A.I. Rezonansnyi nizkovol'tnyi preobrazovatel [Resonant LLC Low Voltage Converter] 1 mezhdunarodnaya konferentsiya «Problemy informatiki, elektroniki i radiotekhniki» [ 1st International Conference Problems of Informatics, Electronics, and Radio Engineering]. Novosibirsk, NSTU, 2020, pp. 121–127 (in Russ.)
- 13. Osipov A.V. [A Comparative Study of Energy Characteristics in Resonant LLC– and LCC- DC-DC-Converters]. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2024, vol. 27, no. 4, pp. 153–159 (in Russ.).
- 14. Jovanović M.M., Irving B.T. On-the-Fly TopologyMorphing Control-Efficiency Optimization Method for LLCResonant Converters Operating in Wide Input– and/or OutputVoltage Range. IEEE Transactions on Power Electronics, 2016, vol. 31, no. 3, pp. 2596–2608.
- 15. Popov V.P. Osnovy teorii tsepei: uchebnik dlya vuzov [Fundamentals of Circuit Theory. Textbook for universities]. 7th ed., revised and enlarged. Moscow, Yurait Publishing House, 2025, 602 p. (in Russ.).
Last issue
-2026-1_%D0%BA%D0%BE%D0%BF%D0%B8%D1%8F.jpg)
Editorial office address
Executive Secretary of the Editor’s Office
Editor’s Office: 40 Lenina Prospect, Tomsk, 634050, Russia
Phone / Fax: + 7 (3822) 701-582
Executive Secretary of the Editor’s Office
Editor’s Office: 40 Lenina Prospect, Tomsk, 634050, Russia
Phone / Fax: + 7 (3822) 51-21-21 / 51-43-02
Subscription for updates
