Asghar Salehi, Mohammad Hossein Ershadi, Mehdi Baharizadeh

DOI Number
First page
Last page


In this paper a new non-isolated high step-up interleaved cascade converter is presented. In comparison with the conventional cascade boost converter, the proposed converter has a higher voltage gain, lower input current ripple and reduced voltage stress for the switches and diodes. Besides, unlike the conventional cascade boost converter, in the proposed converter the input current is shared between inductors and hence the converter can be implemented with lower current rated inductors. Thus, the converter size and conduction losses are reduced and the efficiency is increased. The proposed converter is analyzed and experimental results of a 200W laboratory prototype are presented.


DC-DC converters, soft switching, high step up, voltage stress

Full Text:



T. Dragicevic, J.C. Vasquez and J.M. Guerrero, "DC microgrids-Part II: A review of power architectures, application and standardization issues", IEEE Trans. on Power Elec., vol. 31, no. 5, pp. 3528–3549, 2015.

N. Eghtedarpour and E. Farjah, "Distributed charge/discharge control ofenergy storages in a renewable-energy-based DCmicro-grid", IET Renewable Power Gener., vol. 8, no. 1, pp. 45–57, Jan. 2014.

H. Khamooshpoor, M. Baharizadeh, M.H. Ershadi, "Comparison of two approaches of resolving power sharing error in droop based DC microgrids", Majlesi Journal of Electrical Engineering, vol. 14, no. 2, pp. 111–115, 2020.

S.R. Addula and M. Prabhakar, "Coupled Inductor Based Soft Switched Interleaved DC-DC Converter for PV Applications", International Journal of Renewable Energy Research, vol. 6, no. 2, pp. 361–374, 2016.

B. Ahmed, G. Yacine, D. Rabah and H. MHA, "Design and Electromagnetic Modeling of Integrated LC Filter in a Buck Converter", FACTA UNIVERSITATIS, Series: Electronics and Energetics, vol. 33, no. 2, pp. 289–302, 2020.

M. Vafa, M.H. Ershadi, H. Khodadadi, and M. Baharizadeh, "An Interleaved High Step-Up DC–DC Converter with Low Voltage Stress", Iranian Journal of Science and Technology, Transactions of Electrical Engineering, vol. 44, no. 1, pp. 1–12, 2020.

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 Proceedings of the IEEE Conference PESC, 2003, pp. 731–735.

F. L. Tofoli, D. de Castro Pereira, W. Josias de Paula, D. de Sousa Oliveira Júnior, "Survey on non-isolated high-voltage step-up dc–dc topologies based on the boost converter", IET Power Electron., vol. 8, no.10, pp. 2044-2057, Oct. 2015.

L. Huber, M.M. Jovanovic, "A design approach for server power supplies for networking applications". In Proceedings of the IEEE Applied Power Electronics Conf. and Exposition, 2000, pp. 1163–1169.

M. H. Todorovic, L. Palma, and P. N. Enjeti, "Design of a wide input range dc–dc converter with a robust power control scheme suitable for fuel cell power conversion, " IEEE Trans. Ind. Electron., vol. 55, no. 3, pp. 1247–1255, Mar. 2008.

B.-R. Lin, J.-J. Chen, "Analysis and implementation of a soft switching converter with high-voltage conversion ratio", IET Power Electron., vol. 1, no. 3, pp. 386–394, Sep. 2008.

S.-M. Chen, T.-J. Liang, L.-S. Yang, and J.-F. Chen, "A cascaded high step-up DC–DC converter with single switch for microsource applications," IEEE Trans. Power Electron., vol. 26, no. 4, pp. 1146– 1153, Apr. 2011.

N. Molavi, M. Esteki, E. Adib and H. Farzanehfard, "High step-up/down DC-DC bidirectional converter with low switch voltage stress," In Proceedings of the 6th Power Electronics, Drive Systems & Technologies Conference (PEDSTC2015), Tehran, 2015, pp. 162–167.

R. Gules, L. L. Pfitscher, and L. C. Franco, "An interleaved boost dc–dc converter with large conversion ratio," in Proceedings of the IEEE Conference ISIE, 2003, pp. 411–416.

L.-W. Zhou, B.-X. Zhu, Q.-M. Luo, S. Chen, "Interleaved non-isolated highstep-updc/dc converter based on the diode-capacitor multiplier", IET PowerElectron., vol. 7, no. 2, pp. 390–397, 2014.

S. Dwari and L. Parsa, "An efficient high-step-up interleaved dc–dc converter with a common active clamp, " IEEE Trans. Power Electron., vol. 26, no. 1, pp. 66–78, Jan. 2011.

K. C. Tseng, C. C. Huang, and W. Y. Shih, "A high step-up converter with a voltage multiplier module for a photovoltaic system, " IEEE Trans. Power Electron., vol. 28, no. 6, pp. 3047–3057, Jun. 2013.

K. C. Tseng, J. Z. Chen, J. T. Lin, C.C. Huang, and T. H. Yen, "High step-up interleaved forward-flyback boost converter with three-winding coupled inductors, " IEEE Trans. Power Electron., vol. 30, no. 9, pp. 4696–4703, Sep. 2015.

W. Li, Y. Zhao, and X. He, "Interleaved high step-up converter with winding-cross-coupled inductors and voltage multiplier cells," IEEE Trans. Power Electron., vol. 27, no. 1, pp. 133–143, Jan. 2012.

T.-F. Wu, Y.-S. Lai, J.-C. Hung, and Y.-M. Chen, "Boost converter with coupled inductors and buck–boost type of active clamp, " IEEE Trans. Ind. Electron., vol. 55, no. 1, pp. 154–162, Jan. 2008.

T.-F. Wu, Y.-D. Chang, C.-H. Chang, H.-X. Lee, K.-Y. Lee and J.-G. Yang, "A 5 kW Boost converter with various passive/active snubbers for reducing component stress and achieving high efficiency," In Proceedings of the International Conference Power Electron. Drive Syst., Nov. 2009, pp. 187–192.

X. Liu, X. Xhang, " Interleaved High Step-Up Converter with Coupled Inductor and Voltage Multiplier for Renewable Energy System" CPSS Transactions on Power Electronics and Applications, vol. 4, no. 4, pp. 299–306, 2019.

S. Chen, S. Yang, C. Hwang, "Interleaved High Step-Up DC-DC Converter Based on Voltage Multiplier Cell and Voltage-Stacking Techniques for Renewable Energy Applications," Energies 11, 1632, pp.1–8, 2018.


  • There are currently no refbacks.

ISSN: 0353-3670 (Print)

ISSN: 2217-5997 (Online)

COBISS.SR-ID 12826626