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Article

Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation

1
Department of Electrical and Electronics Engineering, GMR Institute of Technology, Rajam, Andhra Pradesh 532127, India
2
Renewable Energy Laboratory, Prince Sultan University, Salahuddin, Riyadh 12435, Saudi Arabia
3
Department of Electrical Power Engineering, Faculty of Mechanical and Electrical Engineering, Tishreen University, Lattakia 2230, Syria
4
Department of Management & Innovation Systems, University of Salerno, 84084 Fisciano, Italy
*
Author to whom correspondence should be addressed.
Energies 2020, 13(15), 3960; https://doi.org/10.3390/en13153960
Received: 26 June 2020 / Revised: 20 July 2020 / Accepted: 30 July 2020 / Published: 1 August 2020
(This article belongs to the Special Issue Smart Distribution Grid Technologies and Applications)
A new non-isolated modified SEPIC front-end dc-dc converter for the low power system is proposed in this paper, and this converter is the next level of the traditional SEPIC converter with additional devices, such as two diodes and splitting of the output capacitor into two equal parts. The circuit topology proposed in this paper is formulated by combining the boost structure with the traditional SEPIC converter. Therefore, the proposed converter has the benefit of the SEPIC converter, such as continuous input current. The proposed circuit structure also improves the features, such as high voltage gain and high conversion efficiency. The converter comprises one MOSFET switch, one coupled inductor, three diodes, and two capacitors, including the output capacitor. The converter effectively recovers the leakage energy of the coupled inductor through the passive clamp circuit. The operation of the proposed converter is explained in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The required voltage gain of the converter can be acquired by adjusting the coupled inductor turn’s ratio along with the additional devices at less duty cycle of the switch. The simulation of the proposed converter under CCM is carried out, and an experimental prototype of 100 W, 25 V/200 V is made, and the experimental outcomes are presented to validate the theoretical discussions of the proposed converter. The operating performance of the proposed converter is compared with the converters discussed in the literature. The proposed converter can be extended by connecting voltage multiplier (VM) cell circuits to get the ultra-high voltage gain. View Full-Text
Keywords: clamp circuit; coupled inductor; high voltage gain; SEPIC converter; voltage stress clamp circuit; coupled inductor; high voltage gain; SEPIC converter; voltage stress
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MDPI and ACS Style

Premkumar, M.; Subramaniam, U.; Haes Alhelou, H.; Siano, P. Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation. Energies 2020, 13, 3960. https://doi.org/10.3390/en13153960

AMA Style

Premkumar M, Subramaniam U, Haes Alhelou H, Siano P. Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation. Energies. 2020; 13(15):3960. https://doi.org/10.3390/en13153960

Chicago/Turabian Style

Premkumar, Manoharan, Umashankar Subramaniam, Hassan Haes Alhelou, and Pierluigi Siano. 2020. "Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation" Energies 13, no. 15: 3960. https://doi.org/10.3390/en13153960

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