10.57647/mjee.2026.2001.08

A Novel Quadratic High Step-Up Converter Featuring Low Ripple Input Current and Lossless Snubber

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  • Fatemeh Omrani1,
  • Majid Delshad*1,
  • Bahador Fani1,
  1. Department of Electrical Engineering, Isf.C, Islamic Azad University, Isfahan, Iran

Received: 2025-10-16

Revised: 2025-12-12

Accepted: 2025-12-31

Published in Issue 2026-03-31

Copyright (c) 2026 Fatemeh Omrani, Majid Delshad, Bahador Fani (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Omrani, F., Delshad, M., & Fani, B. (2026). A Novel Quadratic High Step-Up Converter Featuring Low Ripple Input Current and Lossless Snubber. Majlesi Journal of Electrical Engineering, 20(1 (March 2026). https://doi.org/10.57647/mjee.2026.2001.08
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Abstract

This paper introduces a high step-up DC–DC converter that combines a quadratic boost architecture with a flyback stage and incorporates a novel lossless snubber network to enhance efficiency and voltage stress performance. The converter achieves a substantial step-up ratio increase with diminished switch over-voltage, while maintaining soft-switching operation for all semiconductor devices. Consequently, transition-related losses are suppressed and diode reverse-recovery is mitigated. The leakage inductance energy is efficiently captured by the snubber and redirected to the output, contributing to overall performance enhancement. The circuit design is simplified due to the ground-referenced single power switch, which facilitates easier control and gate driving. Moreover, the low input-current ripple renders the converter configuration highly suitable for photovoltaic energy systems. A comprehensive theoretical analysis is conducted, and a 140 W prototype has been built. The experimental results validate the proposed analysis and indicate a 4% efficiency improvement over conventional hard-switched equivalents.

Keywords

  • Step-up,
  • Quadratic,
  • Lossless snubber,
  • ZVS,
  • ZCS
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References

  1. Zaghmari MK, Delshad M, Abbasian M, and Yazdani MR. “A new ZVS multi-input converter with modular auxiliary circuit and low voltage stress for renewable energy applications.” Majlesi Journal of Electrical Engineering 2025. doi: 10.57647/j.mjee.2025.17076
  2. Bashirazami S, Amini MR, Adib E, and Delshad M. “Two-switch step-down converter with low switch voltage stress”. Majlesi Journal of Electrical Engineering 2024; 18:1–8. doi: 10.57647/j. mjee.2024.180345
  3. Akhlaghi B and Farzanehfard H. “Soft Switching Interleaved High Step-Up Converter With Multifunction Coupled Inductors”. IEEE J. Emerg. Sel. Topics Ind. Electron. 2021; 2:13–20. doi: 10.1109/JESTIE.2020.3033542
  4. Samadian A, Hosseini SH, and Sabahi M. “A New Three-Winding Coupled Inductor Nonisolated Quasi-Z-Source High Step-Up DC–DC Converter.” IEEE Trans. Power Electron. 2021; 36:11523–11531. doi: 10.1109/TPEL.2021.3071847
  5. Delshad M. “A new zero-voltage-switching buck–boost-type DC–DC converter.” Majlesi Journal of Electrical Engineering 2010; 4:25–318. doi: 10.1234/mjee.v4i1.149
  6. Faridpak B, Bayat M, Nasiri M, Samanbakhsh R, and Farrokhifar M. “Improved Hybrid Switched Inductor/Switched Capacitor DC–DC Converters. ” IEEE Trans. Power Electron. 2021; 36:3053–3062. doi: 10.1109/TPEL.2020.3014278
  7. Luo P, Liang TJ, Chen KH, and Chen SM. “Design and Implementation of a High Step-Up DC-DC Converter With Active Switched Inductor and Coupled Inductor.” IEEE Trans. Ind. Appl. 2018; 59:3470–3480. doi: 10.1109/TIA.2023.3238701
  8. Li H and Chen D. “A Novel High Step-Up Noniso-lated Quasi-Z-Source DC–DC Converter With Active Switched Inductor and Switched Capacitor.” IEEE J. Emerg. Sel. Topics Power Electron. 2023; 11:5062–5077. doi: 10.1109/JESTPE.2023.3295408
  9. Krishna B and Karthikeyan V. “Active Switched-Inductor Network Step-Up DC–DC Converter With Wide Range of Voltage Gain at the Lower Range of Duty Cycles.” IEEE J. Emerg. Sel. Topics Ind. Electron. 2021; 2:431–441. doi: 10.1109/ JESTIE.2021.3097943
  10. Hasanpour S. “New Structure of Single-Switch Ultra-High-Gain DC/DC Converter for Renewable Energy Applications. ” IEEE Trans. Power Electron. 2022; 37:12715–12728. doi: 10.1109/ TPEL.2022.3172311
  11. Ding X, Zhou M, Cao Y, Li B, Sun Y, and Hu X. “A High Step-Up Coupled-Inductor-Integrated DC–DC Multilevel Boost Converter with Continuous Input Current.” IEEE Journal of Emerging and Selected Topics in Power Electronics 2022; 10:7346–7360. doi: 10.1109/JESTPE.2022.3184699
  12. Rezaie M and Abbasi V. “Ultrahigh Step-Up DC–DC Converter Composed of Two Stages Boost Converter, Coupled Inductor, and Multiplier Cell.” IEEE Trans. Ind. Electron. 2022; 69:5867–5878. doi: 10.1109/TIE.2021.3091916
  13. Rao BT and De D. “A Coupled Inductor-Based High-Gain ZVS DC–DC Converter With Reduced Voltage Stresses.” IEEE Trans. Power Electron. 2023; 38:15956–15967. doi: 10.1109/TPEL. 2023.3310577
  14. Jin T, Lin J, Li H, Yan X, Weng Y, and Mao X. “A Novel Three-Winding Coupled Inductor-Based High Step-Up DC-DC Converter for Renewable Energy Application.” IEEE J. Emerg. Sel. Topics Power Electron. 2023; 11:4477–4490. doi: 10 . 1109/JESTPE.2023.3260899
  15. Niazi Y, Hosseini SH, and Maalandish M. “A Switched-Capacitor Multi-Level Inverter With Variable Voltage Gain Based on Current-Fed Dickson Voltage Multiplier.” IEEE Access 2023; 11:119352–119361. doi: 10.1109/ACCESS.2023.3327309
  16. Sarvghadi P, Varjani AY, and Shahparasti M. “A High Step-Up Transformerless DC–DC Converter With New Voltage Multiplier Cell Topology and Coupled Inductor.” IEEE Trans. Ind. Electron. 2022; 69:10162–10171. doi: 10.1109/ TIE.2021.3135625
  17. Azizkandi ME, Hosseini SH, Maalandish M, and Babaei E. “A High Voltage Gain DC–DC Converter Based on Three Winding Coupled Inductor and Voltage Multiplier Cell.” IEEE Trans. Power Electron. 2020; 35:4558–4567. doi: 10.1109/TPEL.2019.2944518
  18. Mohammadi F, Hosseini SH, Maalandish M, and Babaei E. “Non-Isolated Step-Up DC–DC Converter Based on Switched Capacitor Cells.” CSEE J. Power Energy Syst. 2023; 9:1161–1172. doi: 10.17775/CSEEJPES.2021.07370
  19. Sadeghpour D and Bauman J. “High-Efficiency Coupled-Inductor Switched-Capacitor Boost Converter With Improved Input Current Ripple.” IEEE Trans. Ind. Electron. 2022; 69:7940–7951. doi: 10.1109/TIE.2021.3109505
  20. Subhani N, Bhaskar MS, Padmanaban S, and Blaab-jerg F. “An Improved Non-Isolated Quadratic DC–DC Boost Converter With Ultra High Gain Ability.” IEEE Access 2023; 11:11350–11363. doi: 10.1109/ACCESS.2023.3241863.
  21. Li G, Tang Y, He Y, and He X. “The Methodology of Constructing the Quadratic Converters. ” IEEE J. Emerg. Sel. Topics Power Electron. 2022; 10:6586–6606. doi: 10.1109/JESTPE.2022.3157002
  22. Hu R, Tang Y, and He X. “An Ultrahigh Step-Up Quadratic Boost Converter Based on Coupled-Inductor.” IEEE Trans. Power Electron. 2020; 35:13200–13209. doi: 10.1109/TPEL.2020.2995911
  23. Nouri T, Hosseini SH, Maalandish M, and Babaei E. “An Interleaved ZVS High Step-Up Converter for Renewable Energy Systems Applications.” IEEE Trans. Ind. Electron. 2022; 69:4786–4800. doi: 10.1109/TIE.2021.3080211
  24. Hasanpour S, Hosseini SH, Maalandish M, and Babaei E. “High Step-Up SEPIC-Based Trans-Inverse DC–DC Converter with Quasi-Resonance Operation for Renewable Energy Applications. ” IEEE Trans. Ind. Electron. 2023; 70:485–497. doi: 10.1109/TIE.2022.3150103
  25. Yuan J, Tang Y, and He X. “A Modified Y-Source DC–DC Converter With High Voltage-Gains and Low Switch Stresses.” IEEE Trans. Power Electron. 2020; 35:7716–7720. doi: 10.1109/ TPEL.2020.2964153
  26. Zhou M, Tang Y, and He X. “High Step-Up Soft-Switching DC–DC Converter Integrated With Y-Source Network.” IEEE J. Emerg. Sel. Topics Power Electron. 2023; 11:3348–3358. doi: 10.1109/JESTPE.2023.3264984
  27. Tarzamni H, Hosseini SH, Maalandish M, and Babaei E. “Nonisolated High Step-Up DC–DC Converters: Comparative Review and Metrics Applicability.” IEEE Trans. Power Electron. 2024; 39:582–625. doi: 10.1109/TPEL.2023.3264172
  28. Kalahasthi RB, Mishra SK, and Joshi A. “A ZVS-Based Non-Isolated High Step-Up DC–DC Converter With Low Voltage Stress for Renewable Applications.” IEEE J. Emerg. Sel. Topics Power Electron. 2023; 11:2793–2804. doi: 10.1109/JESTPE.2023.3237076
  29. Mohseni P, Hosseini SH, Maalandish M, and Babaei E. “An Optimal Structure for High Step-Up Nonisolated DC–DC Converters With Soft-Switching Capability and Zero Input Cur-rent Ripple.” IEEE Trans. Ind. Electron. 2022; 69:4676–4686. doi: 10.1109/TIE.2021.3080202
  30. Nouri T, Hosseini SH, Maalandish M, and Babaei E. “A Novel Interleaved High Step-Up Converter With Built-In Transformer Voltage Multiplier Cell. ” IEEE Trans. Ind. Electron.
  31. Alavi P, Hosseini SH, Maalandish M, and Babaei E. “An Ultra-High Step-Up DC–DC Converter With Extendable Voltage Gain and Soft-Switching Capability.” IEEE Trans. Ind. Electron. 2020; 67:9238–9250. doi: 10.1109/TIE.2019.2952821
  32. Farsijani M, Hosseini SH, Maalandish M, and Babaei E. “A High Step-Up Cost Effective DC-to-DC Topology Based on Three-Winding Coupled-Inductor.” IEEE J. Emerg. Sel. Topics Ind. Elec-tron. 2023; 4:50–59. doi: 10.1109/JESTIE.2022.3217017
  33. Hasanpour S, Hosseini SH, Maalandish M, and Babaei E. “A Novel Full Soft-Switching High-Gain DC/DC Converter Based on Three-Winding Coupled-Inductor.” IEEE Trans. Power Electron. 2021; 36:12656–12669. doi: 10.1109/TPEL.2021.3075724
  34. Liang TJ, Luo P, and Chen KH. “A High Step-Up DC–DC Converter With Three-Winding Coupled Inductor for Sustainable Energy Systems.” IEEE Trans. Ind. Electron. 2022; 69:10249–10258. doi: 10.1109/TIE.2021.3123683
  35. Marzang V, Sabahi M, and Guerrero JM. “A High Step-Up DC–DC Converter Based on ASL and VMC for Renewable Energy Applications.” Energy Rep. 2022; 8:12699–12711. doi: 10.1016/j.egyr.2022.09.080
  36. Amini MR and Farzanehfard H. “Novel family of PWM soft-single-switched DC–DC converters with coupled inductors. ” IEEE Trans. Ind. Electron. 2009; 56:2108–2114. doi: 10.1109/TIE.2009. 2016509
  37. Esteki M, Mohammadi M, Yazdani MR, Adib E, and Farzanehfard H. “Family of soft-switching pulse-width modulation converters using coupled passive snubber.” IET Power Electron. 2017; 10:792–800. doi: 10.1049/iet-pel.2016.0362
  38. Mohammadi M, Adib E, and Yazdani MR. “Family of soft-switching single-switch PWM converters with lossless passive snubber.” IEEE Trans. Ind. Electron. 2015; 62:3473–3481. doi: 10.1109/TIE. 2014.2371436
  39. Zhan T, Zhang Y, Nie J, Zhang Y, and Zhao Z. “A novel soft-switching boost converter with magnetically coupled resonant snubber.” IEEE Trans. Power Electron. 2014; 29:5680–5687. doi: 10.1109/TPEL.2013.2295887