A High Step-up Dual-switch Luo Non-isolated DC-DC Converter with Fault-tolerant Capability for Critical Load Applications

Authors

  • Krishna Velmajala Research scholar, NIT Warangal, India https://orcid.org/0009-0004-8402-9528
  • Srinivasa Rao Sandepudi National Institute of Technology, Warangal

Keywords:

Common grounding, critical loads, high voltage gain, reduced voltage stress, reconfiguration capability.

Abstract

This article proposes high step-up dual-switch Luo non-isolated DC-DC converter with fault-tolerant capability for critical load applications. The proposed converter constitutes more advantages, which including increased voltage gains with a reduced duty cycle, common grounding between the source and load, low component count and lower voltage and current stress. In addition, it offers reconfiguration capability and decreases the power handling capability by devices, thereby enhancing overall converter efficiency. The performance characteristics of the proposed converter are analyzed in continuous current mode (CCM), with a comprehensive discussion of its features. The proposed converter experimental results are validated at 400 W output power for operational effectiveness and feasibility.

Downloads

Download data is not yet available.

Author Biographies

Krishna Velmajala, Research scholar, NIT Warangal, India

Krishna Velmajala received the B.Tech. degree in Electrical and Electronic Engineering from Christu Jyoti Institute of Technology and Science (JNTUH), Warangal, India, in 2018, and the M.Tech. degree in Power Electronics and Drives from SR Engineering College(JNTUH), Warangal, India, in 2020. He is currently pursuing a Ph.D. degree in National Institute of Technology (NIT), Warangal, India. His research interests include power electronic converters and electric vehicles.

Srinivasa Rao Sandepudi, National Institute of Technology, Warangal

Srinivasa Rao Sandepudi (Senior Member, IEEE) received the B.Tech. degree in Electrical Engineering from Regional Engineering College (REC), Warangal, India, in 1992, and the M.Tech. degree in Power Electronics from Regional Engineering College (REC), Calicut, India, in 1994. He received the Ph.D. degree from the National Institute of Technology (NIT), Warangal, India, in 2007. Since 1996, he has been a Faculty Member with NIT, Warangal. His research interests include Renewable Energy System, Power Quality, Power Electronic Converters, Induction Motor Drives, Uni-polar and Bi-polar DC Micro-grids, Digital Signal Processor Controlled Drives. He is a Life Fellow of Society of Power Engineers (SPE) India, Life Member of the System Society of India (SSI), Life Member of Indian Society for Technical Education (ISTE), Fellow in the Institution of Engineers (India), Member in International Association of Engineers(IAENG), and Member of Instrument Society of India (ISOI).

References

A. Ansari and J. S. Moghani, “A novel high voltage gain noncoupled inductor SEPIC converter,” IEEE Trans. Ind. Electron., vol. 66, no. 9, pp.7099-7108, Sep. 2019, doi: 10.1109/TIE.2018.2878127.

A. M. S. S. Andrade, T. M. K. Faistel, R. A. Guisso, and A. Toebe, “Hybrid high voltage gain transformerless DC–DC converter,” IEEE

Trans. Ind. Electron., vol. 69, no. 3, pp. 2470-2479, Mar. 2022, doi: 10.1109/TIE.2021.3066939.

T. Jalilzadeh, N. Rostami, E. Babaei, and M. Maalandish, “Non-isolated topology for high step-up DC-DC converters,” IEEE J. Emerg. Sel.

Topics Power Electron., vol. 11, no. 1, pp. 1154-1168, Feb. 2023,doi: 10.1109/JESTPE.2018.2849096.

S. Gopinathan, V. S. Rao, and S. Kumaravel, “Family of non-isolated quadratic high gain DC-DC converters based on extended capacitor diode network for renewable energy source integration,” IEEE J. Emerg. Sel.Topics Power Electron., vol. 10, no. 5, pp. 6218-6230, Oct. 2022,doi:10.1109/JESTPE.2022.3167283.

X. Wu, M. Yang, M. Zhou, Y. Zhang, and J. Fu, “A novel high gain DC-DC converter applied in fuel cell vehicles,” IEEE Trans.Veh. Technol., vol. 69, no. 11, pp. 12763-12774, Nov. 2020, doi:10.1109/TVT.2020.3023545.

M. Veerachary and P. Kumar, “Analysis and design of quasi-Z-source equivalent DC–DC boost converters,” IEEE Trans. Ind. Appl., vol. 56,no. 6, pp. 6642–6656, Nov./Dec. 2020, doi: 10.1109/TIA.2020.3021372.

A. Mahmood, M. Zaid, S. Khan, M. D. Siddique, A. Iqbal, and Z.Sarwer, “A non-isolated quasi-Z-source-based high-gain DC–DC con

verter,” Int. J. Circuits Theor. Appl., vol. 50, no. 2, pp. 653-682, 2022,doi:https://doi.org/10.1002/cta.3162

M. M. Haji-Esmaeili, E. Babaei, and M. Sabahi, “High step-up quasi-Z source DC-DC converter,” IEEE Trans. Power Electron., vol. 33, no. 12, pp. 10563-10571, Dec. 2018, doi: 10.1109/TPEL.2018.2810884.

R. Rahimi, S. Habibi, M. Ferdowsi, and P. Shamsi, “Z-source-based high step-up DC–DC converters for photovoltaic applications,” IEEE J. Emerg.Sel. Topics Power Electron., vol. 10, no. 4, pp. 4783-4796, Aug. 2022,doi: 10.1109/JESTPE.2021.3131996.

M. Veerachary and P. Sen, “Charge-pump based enhanced gain quasi Z-source equivalent DC–DC converter,” in Proc. IEEE Int. Conf. Power Electron. Drives Energy Syst. (PEDES), Jaipur, India, 2020, pp. 1-5, doi: 10.1109/PEDES49360.2020.9379654.

M. Veerachary and P. Sen, “Dual-switch enhanced gain boost DC DC converters,” IEEE Trans. Ind. Appl., vol. 58, no. 4, pp. 4903-4913,

Jul./Aug. 2022,doi: 10.1109/TIA.2022.3171533.

S. Miao, W. Liu, and J. Gao, “Single-inductor boost converter with ultra high step-up gain, lower switches voltage stress, continuous input current, and common grounded structure,” IEEE Trans. Power Electron., vol. 36, no. 7, pp. 7841–7852, Jul. 2021, doi: 10.1109/TPEL.2020.3047660.

M. K. Nguyen, T. D. Duong, and Y. C. Lim, “Switched capacitor based dual-switch high-boost DC–DC converter,” IEEE

Trans. Power Electron., vol. 33, no. 5, pp. 4181–4189, May 2018.https://doi.org/10.1002/cta.2593.

A. Kumar et al., “A high voltage gain DC–DC converter with common grounding for fuel cell vehicle,” IEEE Trans. Veh. Technol., vol. 69, no. 8, pp. 8290-8304, Aug. 2020, doi: 10.1109/TVT.2020.2994618.

X. Zhu, K. Ye, K. Liu, and B. Zhang, “Non isolated high step-up DC DC converter with passive switched-inductor-capacitor network,” IEEE J.Emerg. Sel. Topics Power Electron., vol. 10, no. 6, pp. 6444-6456, Dec. 2022, doi: 10.1109/JESTPE.2021.3125403.

S. Habib et al., "Contemporary trends in power electronics converters for charging solutions of electric vehicles," in CSEE Journal of Power and Energy Systems, vol. 6, no. 4, pp. 911-929, Dec. 2020, doi: 10.17775CSEEJPES.2019.02700.

BBanaei MR, Zoleikhaei A, Sani SG. Design and implementation of an interleaved switched-capacitor dc-dc converter for energy storage systems. Journal of Power Technologies, v. 99, no. 1, pp. 1-9, mar. 2019,<https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1374>.

H. Tarzamni, F. P. Esmaeelnia, M. Fotuhi-Firuzabad, F. Tahami, S.Tohidi and P. Dehghanian, "Comprehensive Analytics for Reliability Evaluation of Conventional Isolated Multiswitch PWM DC–DC Converters," in IEEE Transactions on Power Electronics, vol. 35, no. 5, pp. 5254-5266,May 2020, doi: 10.1109/TPEL.2019. 2944924.

Zhang, Wenping, Dehong Xu, Prasad N. Enjeti, Haijin Li, Joshua T. Hawke, and Harish S. Krishnamoorthy. “Survey on fault-tolerant

techniques for power electronic converters", IEEE Transactions on Power Electronics, vol.29, no. 12, pp.6319-6331, Dec. 2014, doi:

1109/TPEL.2014.2304561.

P. Cheng, H. Kong, C. Wu and J. Ma, "Integrated Configuration and Control Strategy for PV Generation in Railway Traction Power Supply Systems," in CSEE Journal of Power and Energy Systems, vol. 8, no. 6, pp. 1603-1612, November 2022, doi: 10.17775/CSEEJPES.2020.03480.

Freire, N. M., & Cardoso, A. J. M. (2013). Fault-tolerant PMSG drive with reduced DC-link ratings for wind turbine applications. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2, 26-34. March 2014, doi: 10.1109/JESTPE.2013.2295061.

E. Ribeiro, A. J. M. Cardoso and C. Boccaletti, "Open-Circuit Fault Diagnosis in Interleaved DC–DC Converters," in IEEE Transactions on

Power Electronics, vol. 29, no. 6, pp. 3091-3102, June 2014, doi: 10.1109/TPEL.2013.2272381.

M. M. Haji-Esmaeili, M. Naseri, H. Khoun-Jahan and M. Abapour,"Fault-Tolerant and Reliable Structure for a Cascaded Quasi-Z-Source

DC–DC Converter," in IEEE Transactions on Power Electronics, vol. 32,no. 8, pp. 6455-6467, Aug. 2017, doi: 10.1109/TPEL.2016.2621411.

J. L. Soon, D. D.-C. Lu, J. C.-H. Peng and W. Xiao, "Reconfigurable Non isolated DC–DC Converter with Fault-Tolerant Capability," in IEEE Transactions on Power Electronics, vol. 35, no. 9, pp. 8934-8943, Sept. 2020, doi: 10.1109/TPEL.2020.2971837.

E. Ribeiro, A. J. M. Cardoso and C. Boccaletti, "Fault-Tolerant Strategy for a Photovoltaic DC–DC Converter," in IEEE Transactions on Power Electronics, vol. 28, no. 6, pp. 3008-3018, June 2013, doi: 10.1109/ TPEL. 2012.2226059.

R. Stala, Z. Waradzyn, A. Penczek, A. Mondzik and A. Skała, "A Switched-Capacitor DC–DC Converter with Variable Number of Voltage

Gains and Fault-Tolerant Operation," in IEEE Transactions on Industrial Electronics, vol. 66, no. 5, pp. 3435-3445, May 2019, doi: 10.1109/TIE.2018.2851962.

Guilbert, D., N’ Diaye, A., Gaillard, A., & Djerdir, A. (2019). Reliability improvement of a floating interleaved DC/DC boost converter in a PV/fuel cell stand-alone power supply.EPE Journal,vol. 29, pp. 49–63,2018,https://doi.org/10.1080/09398368.2018.1505369.

F. Mohammadi, H. Rastegar and M. Pichan, "High Efficient Design of a Reconfigurable Step-Up DC-DC Converter with Fault-Tolerant Capability," in CSEE Journal of Power and Energy Systems, vol. 11,

no. 1, pp. 296-305, January 2025, doi: 10.17775/CSEEJPES.2022.04070.

K. Velmajala and S. R. Sandepudi, "High Step-up DC-DC Converter with Reconfiguration Capability," in IEEE Latin America Transactions, vol. 22, no. 11, pp. 971-982, Nov. 2024, doi:10.1109/TLA.2024.10738345.

Binxin ZHU, Jiaxin LIU, Yu LIU, Kaihong WANG,"Fault-tolerance wide voltage conversion gain DC/DC converter for more electric aircraft", Chinese Journal of Aeronautics, Vol. 36, no. 7, pp. 420-429, 2023,

https://doi.org/10.1016/j.cja.2023.03.051.

Velmajala, K. and Sandepudi, S., "High Step-Up Interleaved DC-DC Converter With Fault-Tolerant Capability". International Journal of Circuit Theory and Application, Vol. 0, pp. 0-19, 2025,

https://doi.org/10.1002/cta.4473.

Downloads

Published

2025-11-01

How to Cite

Velmajala, K., & Sandepudi, S. R. . (2025). A High Step-up Dual-switch Luo Non-isolated DC-DC Converter with Fault-tolerant Capability for Critical Load Applications. IEEE Latin America Transactions, 23(12), 1271–1283. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/9718

Issue

Vol. 23 No. 12 (2025): Ordinary Issue

Section

Electric Energy