Step-Up Partial Power DC-DC Converters for Two-Stage PV Systems with Interleaved Current Performance

Jaime Wladimir Zapata, Samir Kouro, Gonzalo Carrasco and Hugues Renaudineau
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Jaime Wladimir Zapata: Electronics Engineering Department, Universidad Tecnica Federico Santa Maria, Valparaiso 2390123, Chile
Samir Kouro: Electronics Engineering Department, Universidad Tecnica Federico Santa Maria, Valparaiso 2390123, Chile
Gonzalo Carrasco: Electronics Engineering Department, Universidad Tecnica Federico Santa Maria, Valparaiso 2390123, Chile
Hugues Renaudineau: Electronics Engineering Department, Universidad Tecnica Federico Santa Maria, Valparaiso 2390123, Chile

Energies, 2018, vol. 11, issue 2, 1-11

Abstract: This work presents a partial power converter allowing us to obtain, with a single DC-DC converter, the same feature as the classical interleaved operation of two converters. More precisely, the proposed topology performs similarly as the input-parallel output-series (IPOS) configuration reducing the current ripple at the input of the system and dividing the individual converters power rating, compared to a single converter. The proposed topology consists of a partial DC-DC converter processing only a fraction of the total power, thus allowing high efficiency. Experimental results are provided to validate the proposed converter topology with a Flyback-based 100 W test bench with a transformer turns ratio n 1 = n 2 . Experimental results show high performances reducing the input current ripple around 30 % , further increasing the conversion efficiency.

Keywords: DC-DC converters; microinverter; string inverter; partial power converters; 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: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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