Multiple Input-Single Output DC-DC Converters Assessment for Low Power Renewable Sources Integration

Joaquin Soldado-Guamán, Victor Herrera-Perez (), Mayra Pacheco-Cunduri, Alejandro Paredes-Camacho, Miguel Delgado-Prieto and Jorge Hernandez-Ambato
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Joaquin Soldado-Guamán: Independent Researcher, Riobamba 060101, Ecuador
Victor Herrera-Perez: Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito—USFQ, Quito 170901, Ecuador
Mayra Pacheco-Cunduri: Facultad de Informática y Electrónica, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba 060101, Ecuador
Alejandro Paredes-Camacho: Departamento de Ingeniería Electrónica, Grupo de Investigación MCIA, Universitat Politécnica de Catalunya—UPC, 08222 Barcelona, Spain
Miguel Delgado-Prieto: Departamento de Ingeniería Electrónica, Grupo de Investigación MCIA, Universitat Politécnica de Catalunya—UPC, 08222 Barcelona, Spain
Jorge Hernandez-Ambato: Facultad de Informática y Electrónica, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba 060101, Ecuador

Energies, 2023, vol. 16, issue 4, 1-28

Abstract: This paper presents a comparison of Isolated (Flyback) and non-Isolated (Buck) multiple input-single output (MISO) DC-DC converters. The analysis of DC-DC converters is based on pulsed voltage source cells (PVSC). The modeling of both converter types is detailed through their mathematical models and electrical simulations using Matlab/Simulink and PSIM. The comparison focuses on the sizing parameters, non-ideal output characteristics and efficiency. Results show that the output voltage of the MISO Buck converter exhibits a linear dependence on the duty cycles control signal and has slightly higher efficiency than the Flyback converter. To validate the operation of both converters, a scenario with two inputs (low-power hydroelectric and photovoltaic voltage sources) is considered. The modeling and control of both source systems are detailed and the MISO converter performance response is evaluated under sources changes and efficiency point of view.

Keywords: DC-DC converter; isolated converter; MISO converter; multiport converter; low power renewable sources (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: 2023
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