Coupled inductors design of the bidirectional non-inverting buck-boost converter for high-voltage applications

Catalina González-Castaño, Carlos Restrepo, Roberto Giral, Jordi García-Amoros, Enric Vidal-Idiarte, Javier Calvente

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This work analyses the effects on the efficiency of the winding-to-winding capacitance of the coupled-inductor of the bidirectional non-inverting buck-boost converter in high-voltage applications. This converter presents many advantages that make it suitable for low-voltage hard-switching photovoltaic and fuel cell hybrid systems. However, experimental results obtained using the previously reported procedure to implement the coupled inductors show low-efficiency in high-voltage applications. A different implementation procedure of the coupled inductors, with lower winding-to-winding capacitance, is proposed. High-efficiency experimental results from a 400 V 1.6 kW prototype have been achieved over a wide operating voltage range, thanks to the use of SiC devices and the modified coupled inductors, confirming in this way its good potential as a building block also in high-voltage wide-gain-range applications.

Original languageEnglish
Pages (from-to)3018-3025
Number of pages8
JournalIET Power Electronics
Volume13
Issue number14
DOIs
Publication statusPublished - 4 Nov 2020
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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