Design and Control of Double Interleaved Isolated SEPIC for High Voltage Gain DC/DC Applications

EasyChair Preprint 15479

Abstract

This paper presents a double interleaved doubler isolated single-ended primary-inductor converter (DVDiSEPIC) for high voltage gain in fuel cell systems. Featuring an Input-Parallel Output-Series (IPOS) architecture, the converter achieves significant voltage gain, reduced MOSFET voltage stress, and enhanced efficiency with soft switching. Using a high-frequency transformer and Voltage Doubler (VD) cell, the DVDiSEPIC achieves a voltage gain of 21 under ideal conditions. A cascaded closed-loop control strategy with Proportional-Integral (PI) controllers ensures robust voltage regulation. Comparative analysis shows the converter’s advantages in simplicity and performance, with plans for experimental validation and further improvement.

Keyphrases: DCDC converter, Fuel cell systems, high voltage gain, isolated DCDC converter, linear control, soft switching

@booklet{EasyChair:15479,
  author    = {Andrés Nader-Hernández and Antonio Sánchez-Squella and Rolando Burgos and Patricio Valdivia-Lefort},
  title     = {Design and Control of Double Interleaved Isolated SEPIC for High Voltage Gain DC/DC Applications},
  howpublished = {EasyChair Preprint 15479},
  year      = {EasyChair, 2024}}