Design and Implementation a Single-Switch Step-Up DC-DC Converter Based on Cascaded Boost and Luo Converters

Hossein Gholizadeh, Reza Sharifi Shahrivar, Mir Reza Hashemi, Ebrahim Afjei and Saman A. Gorji
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Hossein Gholizadeh: Faculty of Electrical Engineering, Shahid Beheshti University, Tehran 25529, Iran
Reza Sharifi Shahrivar: Faculty of Electrical Engineering, Islamic Azad University, Tehran 25529, Iran
Mir Reza Hashemi: Faculty of Electrical Engineering, Shahid Beheshti University, Tehran 25529, Iran
Ebrahim Afjei: Faculty of Electrical Engineering, Shahid Beheshti University, Tehran 25529, Iran
Saman A. Gorji: Science and Engineering Faculty, Queensland University of Technology, Brisbane 4001, Australia

Energies, 2021, vol. 14, issue 12, 1-18

Abstract: We designed and implemented a single-switch step-up DC-DC converter based on cascaded boost and Luo converters. The proposed converter demonstrated a quadratic voltage gain and a high efficiency, which makes it suitable for renewable energy applications, where a high voltage gain ratio is desired without imposing a high number of bulky items or employing a high duty cycle of the active switches. This converter benefits from the continuity of the input current waveform, which equips the maximum utilisation of renewable energy sources. While a transformer-less high voltage-gain was achieved, the voltage and current stresses of the power switch and diodes were kept low in comparison with the existing quadratic DC-DC converters. We analysed the converter in both continuous and discontinuous conduction modes. A non-ideal model of components was considered for power loss and efficiency calculations and comparisons. Finally, the simulation results were extracted with PLECS and validated with experiments on a 120 W prototype.

Keywords: boost converter; cascaded converters; high voltage-gain converters; Luo converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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