Partial Power Processing and Efficiency Analysis of dc-dc Differential Converters

Jéssika Melo de Andrade, Roberto Francisco Coelho and Telles Brunelli Lazzarin
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Jéssika Melo de Andrade: Electrical Engineering Department, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil
Roberto Francisco Coelho: Electrical Engineering Department, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil
Telles Brunelli Lazzarin: Electrical Engineering Department, Federal University of Santa Catarina, Florianopolis 88040-900, Brazil

Energies, 2022, vol. 15, issue 3, 1-17

Abstract: This paper presents a partial power processing and an efficiency analysis of dc-dc differential converters based on the use of two basic converters of the same group: the positive or negative group. The paper contributes theoretical analysis and demonstrates that the differential converters based on the positive group process has more power than the load requires, and that the differential converters based on the negative group process has less power than the load needs. This is an important advantage of the negative group converters, since a parcel of the output power is directly transferred by the input source to the load, resulting in partial power processing. In order to verify the theoretical analysis herein developed, ten prototypes are evaluated considering an input voltage of 20 V and output power of 100 W.

Keywords: differential converters; high gain dc-dc converters; non-isolated converters; partial power processing; step-up converters (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: 2022
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