High Step-Up Cascaded Boost Converter with Coupled Inductor and Lossless Passive Snubber

Subject Areas : Electronic Engineering

Zainab Abdul Ameer AL-Dabbagh ¹ , Mohammad Rouhollah Yazdani ² , Fadhil Abbas Hassan H. Al-Ashaa ³

1 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Khorasgan, Isfahan, Iran
2 - Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Khorasgan, Isfahan, Iran
3 - Department of Electrical Engineering, Technology University, Baghdad, Iraq

Received: 2023-01-16 Accepted : 2023-05-14 Published : 2023-11-22

Keywords: lossless passive snubber, high step-up conversion, coupled inductor, soft switching, cascaded DC-DC boost converter,

Abstract :

An effective high-step-up DC-DC converter is an important section of renewable energy systems. Cascaded boost converters provide more voltage gain than single boost converters, but they are still unsuitable for high step-up voltage conversion due to gain and hard switching conditions. To improve the voltage, gain of the cascaded boost converter, a coupled inductor can be used but the leakage inductance causes a voltage. To overcome these problems, a high step-up converter is proposed in which a cascaded structure, coupled inductor, and a lossless passive snubber are utilized together. The proposed converter has zero current and zero voltage switching conditions at turn-on and off instants. First, the proposed converter is theoretically analyzed, and then its design and simulation in OrCAD software are presented.  Furthermore, the experimental results of the prototype verify soft switching conditions and high step-up gain.

References:

1. E. Figueres, G. Garcera, J. Sandia, F. Gonzalez-Espin, and J. C. Rubio, “Sensitivity study of the dynamics of three-phase photovoltaic inverters with an LCL grid filter,” IEEE Transactions on Industrial Electronics, vol. 56, no. 3, pp. 706–717, Mar. 2009, DOI: 10.1109/TIE.2008.2010175.


2. O. Alonso, P. Sanchis, E. Gubia and L. Marroyo, “Cascaded H-bridge multilevel converter for grid-connected photovoltaic generators with independent maximum power point tracking of each solar array” in Proc. IEEE Annual Power Electronics Specialists Conference, July 2003, DOI: 10.1109/PESC.2003.1218146. 


3. B. Singh, N.Brij, A. Chandra, K. Al-Haddad, A. Pandey, D. P. Kothari, “A review of single-phase improved power quality AC-DC converters”, IEEE Transactions on Industrial Electronics, vol. 50, no. 5, pp. 962-981, Oct. 2003, DOI: 10.1109/TIE.2003.817609. 


4. Y.-W. Kim, J.-H. Kim, K.-Y. Choi, B.-S. Suh, and R.-Y. Kim, “A novel soft-switched auxiliary resonant circuit of a PFC ZVT-PWM boost converter for an integrated multichip power module fabrication”, IEEE Transactions on Industry Applications, vol. 49, no. 6, pp. 2802-2809, Nov.-Dec. 2013, DOI: 10.1109/IAS.2012.6374088. 


5. M. R. Mohammadi and H. Farzanehfard, “New family of zero-voltage transition PWM bidirectional converters with coupled inductors,” IEEE Transactions on Industrial Electronics, vol. 59, no. 2, pp. 912-919, Feb. 2012, DOI: 10.1109/TIE.2011.2148681. 


6. S. Dusmez and A. Kaleigh, “A compact and integrated multifunctional power electronic interface for plug-in electric vehicles,”  IEEE Transactions on Power Electronics, vol. 28, no. 12, pp. 5690-5701, Dec. 2013, DOI: 10.1109/TPEL.2012.2233763. 


7. H. F. Xiao, X. P. Liu, and K. Lan, “Zero-voltage-transition full-bridge topologies for transformerless photovoltaic grid-connected inverter,” IEEE Transactions on Industrial Electronics, vol. 61, no. 10, pp. 5393–5401, Oct. 2014, DOI: 10.1109/TIE.2014.2300044. 


8. N. Sukesh, M. Pahlevaninezhad, and P. K. Jain, “Analysis and implementation of a single-stage flyback PV micro inverter with soft switching,” IEEE Transactions on Industrial Electronics, vol. 61, no. 4, pp. 1819–1833, Apr. 2013, DOI: 10.1109/TIE.2013.2263778. 


9. J.-S. Lai et al., “A hybrid-switch-based soft-switching inverter for ultrahigh-efficiency traction motor drives,”, IEEE Transactions on Industry Applications, vol. 50, no. 3, pp. 1966-1973, May-June 2014, DOI: 10.1109/TIA.2013.2284296.


10. A. K. Rathore and P. U R, “Analysis, design, experimental results of novel snubber less bidirectional naturally clamped ZCS/ZVS current-fed half bridge dc/dc converter for fuel cell vehicles,” IEEE Transactions on Industrial Electronics, vol. 60, no. 10, pp. 4482–4491, Oct. 2013, DOI: 10.1109/TIE.2012.2213563.


11. P. Xuewei and A. K. Rathore, “Novel bidirectional snubber less naturally commutated soft-switching current-fed full-bridge isolated dc/dc converter for fuel cell vehicles,” IEEE Transactions on Industrial Electronics, vol. 61, no. 5, pp. 2307–2315, May 2014, DOI: 10.1109/TIE.2013.2271599. 


12. M. Forouzesh, Y. P. Siwakoti, S. A. Gorji, F. Blaabjerg, and B. Lehman, “A Comprehensive Review of Voltage-Boosting Techniques, Topologies, and Applications,” IEEE Transactions on Power Electronics, vol. 32, no. 12, pp. 9143-9178, Dec. 2017, DOI: 10.1109/TPEL.2017.2652318. 


13. M. R. S. de Carvalho, E. A. O. Barbosa, F. Bradaschia, L. R. Limongi, and M. C. Cavalcanti, “Soft-Switching High Step-Up DC-DC Converter Based on Switched-Capacitor and Autotransformer Voltage Multiplier Cell for PV Systems,” IEEE Transactions on Industrial Electronics, vol. 69, no. 12, pp. 12886-12897, Dec. 2022, DOI: 10.1109/TIE.2022.3142432.


14. M. Zhang, Z. Wei, M. Zhou, F. Wang, Y. Cao, and L. Quan, “A High Step-Up DC-DC Converter with Switched-Capacitor and Coupled-Inductor Techniques,” IEEE Transactions on Power Electronics, vol. 3, no. 4, pp. 1067-1076, Oct. 2022, DOI: 10.1109/TIE.2011.2151828. 


15. W. Li, X. Lv, Y. Deng, J. Liu, and X. He, “A Review of Non-Isolated High Step-Up DC/DC Converters in Renewable Energy Applications,” in Proc. IEEE Applied Power Electronics Conference and Exposition, 2009, pp. 364-369, DOI: 10.1109/APEC.2009.4802683.


16. T. H. Li River and H. S. Chung, “A Passive Lossless Snubber Cell with Minimum Stress and Wide Soft-Switching Range,” IEEE Transactions on Power Electronics, vol. 25, no. 7, pp. 1725-1738, Jul. 2010, DOI: 10.1109/ECCE.2009.5316180.


17. E. Dzhunusbekov and S. Orazbayev, “A New Passive Lossless Snubber, ” IEEE Transactions on Power Electronics vol. 36, no. 8, pp. 9263-9272, Aug. 2021, DOI: 10.1109/TPEL.2021.3056189. 


18. R. Faraji, H. Farzanehfard, M. Esteki, and S. A. Khajehoddin, “A Lossless Passive Snubber Circuit for Three-Port DC-DC Converter, ” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 2, pp. 1905-1914, April 2020, DOI: 10.1109/JESTPE.2020.3017619.


19. H.S. Kim, J.W. Beak, M.H. Ryu, J.H. Kim, and J.H. Jung, “Passive Lossless Snubbers Using the Coupled Inductor Method for the Soft Switching Capability of Boost PFC Rectifiers,” Journal of Power Electronics, vol. 15, no. 2, pp.366-377, 2015, DOI: 10.6113/JPE.2015.15.2.366.


20.  M. Mohammadi, E. Adib, and H. Farzanehfard, “Lossless passive snubber for double-ended flyback converter with passive clamp circuit,”IET Power Electronics, vol. 7, no. 2, pp. 245–250, Feb. 2014, DOI: 10.1049/iet-pel.2013.0862. 


21. M. Mohammadi, E. Adib, and M. R. Yazdani, “Family of Soft-Switching Single-Switch PWM Converters with Lossless Passive Snubber,” IEEE Transactions on Industrial Electronics, vol. 62, no. 6, pp.3473-3481, June 2014, DOI: 10.1109/TIE.2014.2371436. 


22. S. Lee and H. Do, “High Step-Up Coupled-Inductor cascaded boost dc–dc converter with lossless passive snubber,” IEEE Transactions on Industrial Electronics, vol. 65, no. 10, October 2018, DOI: 10.1109/TIE.2018.2803731


23. M. Brown, "3 - Pulsewidth Modulated Switching Power Supplies," in Power Supply Cookbook (Second edition), M. Brown, Ed. Burlington: Newnes, 2001, pp. 21-133.