High-Gain High-Efficiency DC–DC Converter with Single-Core Parallel Operation Switched Inductors and Rectifier Voltage Multiplier Cell

Eduardo Augusto Oliveira Barbosa, Márcio Rodrigo Santos de Carvalho, Leonardo Rodrigues Limongi, Marcelo Cabral Cavalcanti, Eduardo José Barbosa and Gustavo Medeiros de Souza Azevedo
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Eduardo Augusto Oliveira Barbosa: Department of Electrical Engineering, Federal University of Pernambuco, Recife 50740-550, Brazil
Márcio Rodrigo Santos de Carvalho: Department of Electrical Engineering, Federal University of Pernambuco, Recife 50740-550, Brazil
Leonardo Rodrigues Limongi: Department of Electrical Engineering, Federal University of Pernambuco, Recife 50740-550, Brazil
Marcelo Cabral Cavalcanti: Department of Electrical Engineering, Federal University of Pernambuco, Recife 50740-550, Brazil
Eduardo José Barbosa: Department of Electrical Engineering, Federal University of Pernambuco, Recife 50740-550, Brazil
Gustavo Medeiros de Souza Azevedo: Department of Electrical Engineering, Federal University of Pernambuco, Recife 50740-550, Brazil

Energies, 2021, vol. 14, issue 15, 1-18

Abstract: This paper proposes a high step-up high-efficiency converter, comprised of an active switched coupled-inductor cell. The secondary windings are integrated into a rectifier voltage multiplier cell in a boost-flyback configuration, allowing the operation with high voltage gain with low switches duty cycle and low turn-ratios on the coupled-inductors. Both coupled-inductors are integrated into a single core due to the parallel operation of the switches. The leakage inductances of the coupled-inductors are used to mitigate the reverse recovery currents of the diodes, while regenerative clamp circuits are used to protect the switches from the voltage spikes caused by the leakage inductances. The operation of the converter is analyzed both quantitatively and qualitatively, and the achieved results are validated through experimentation of a 400 W prototype. A 97.1% CEC efficiency is also reported.

Keywords: high gain DC–DC converter; high efficiency; switched inductor; voltage multiplier cell (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
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