A Novel Single-Switch High Step-Up DC–DC Converter with Three-Winding Coupled Inductor

Aline V. C. Pereira, Marcelo C. Cavalcanti, Gustavo M. Azevedo, Fabrício Bradaschia, Rafael C. Neto and Márcio Rodrigo Santos de Carvalho
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Aline V. C. Pereira: Departmento de Engenharia Eletrica, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
Marcelo C. Cavalcanti: Departmento de Engenharia Eletrica, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
Gustavo M. Azevedo: Departmento de Engenharia Eletrica, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
Fabrício Bradaschia: Departmento de Engenharia Eletrica, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
Rafael C. Neto: Departmento de Engenharia Eletrica, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
Márcio Rodrigo Santos de Carvalho: Departmento de Engenharia Eletrica, Universidade Federal de Pernambuco, Recife 50670-901, Brazil

Energies, 2021, vol. 14, issue 19, 1-17

Abstract: This paper introduces a single-switch, high step-up DC–DC converter for photovoltaic applications such as power optimizers and microinverters. The proposed converter employs two voltage multipliers cells with switched capacitor and magnetic coupling techniques to achieve high voltage gain. This feature, along with a passive clamp circuit, reduces the voltage stress across the switch, allowing for the employment of low R D S o n MOSFET. This leads to low conduction loss of the switch. The diodes operate with zero-current switching at their turn-off transition, eliminating the reverse recovery losses. Additionally, the switch turns on with zero-current switching, leading to insignificant switching loss associated with its turn-on transition. The operation principle and steady-state analysis are presented and validated through experimental results obtained from a 140 W prototype of the proposed converter.

Keywords: high step-up DC–DC converters; zero current switching; three-winding coupled inductor; photovoltaic energy (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 (4)

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