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Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching

Copper; DC-DC converters; Efficiency; Electric resistance; Electric transformer testing; Energy transfer; Insulated gate bipolar transistors (IGBT); Modulation; Switching; Bidirectional isolated dc-dc converter; Conventional phase shift; On-state voltage drop; Phase shift modulation; Simulation veri...

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Main Author: Akagi H.
Other Authors: 7102912290
Format: Article
Published: MDPI AG 2023
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spelling my.uniten.dspace-254602023-05-29T16:09:41Z Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching Akagi H. 7102912290 Copper; DC-DC converters; Efficiency; Electric resistance; Electric transformer testing; Energy transfer; Insulated gate bipolar transistors (IGBT); Modulation; Switching; Bidirectional isolated dc-dc converter; Conventional phase shift; On-state voltage drop; Phase shift modulation; Simulation verification; Switching strategies; Three-phase transformers; Transformer configuration; DC transformers This paper presents the performance of a three-phase bidirectional isolated DC-DC converter (3P-BIDC) in wye-wye (Yy), wye-delta (Yd), delta-wye (Dy), and delta-delta (Dd) transformer configurations, using enhanced switching strategy that combines phase-shift modulation and burst-mode switching. A simulation verification using PSCAD is carried out to study the feasibility and compare the efficiency performance of the 3P-BIDC with each transformer configuration, using intermittent switching, which combines the conventional phase-shift modulation (PSM) and burst-mode switching, in the light load condition. The model is tested with continuous switching that employs the conventional PSM from medium to high loads (greater than 0.3 p.u.) and with intermittent switching at light load (less than 0.3 p.u), in different transformer configurations. In all tests, the DC-link voltages are equal to the transformer turns ratio of 1:1. This paper also presents the power loss estimation in continuous and intermittent switching to verify the modelled losses in the 3P-BIDC in the Yy transformer configuration. The 3P-BIDC is modelled by taking into account the effects that on-state voltage drop in the insulated-gate bipolar transistor (IGBTs) and diodes, snubber capacitors, and three-phase transformer copper winding resistances will have on the conduction and switching losses, and copper losses in the 3P-BIDC. The intermitting switching improves the efficiency of the DC-DC converter with Yy, Yd, Dy, and Dd connections in light-load operation. The 3P-BIDC has the best efficiency performance using Yy and Dd transformer configurations for all power transfer conditions in continuous and intermittent switching. Moreover, the highest efficiency of 99.6% is achieved at the light power transfer of 0.29 p.u. in Yy and Dd transformer configurations. However, the theoretical current stress in the 3PBIDC with a Dd transformer configuration is high. Operation of the converter with Dy transformer configuration is less favorable due to the efficiency achievements of lower than 95%, despite burstmode switching being applied. � 2020 by the authors. Final 2023-05-29T08:09:40Z 2023-05-29T08:09:40Z 2020 Article 10.3390/en13112836 2-s2.0-85086636617 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086636617&doi=10.3390%2fen13112836&partnerID=40&md5=48f58f4f279a118c54b16f168ec7bca4 https://irepository.uniten.edu.my/handle/123456789/25460 13 11 2836 All Open Access, Gold, Green MDPI AG Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Copper; DC-DC converters; Efficiency; Electric resistance; Electric transformer testing; Energy transfer; Insulated gate bipolar transistors (IGBT); Modulation; Switching; Bidirectional isolated dc-dc converter; Conventional phase shift; On-state voltage drop; Phase shift modulation; Simulation verification; Switching strategies; Three-phase transformers; Transformer configuration; DC transformers
author2 7102912290
author_facet 7102912290
Akagi H.
format Article
author Akagi H.
spellingShingle Akagi H.
Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching
author_sort Akagi H.
title Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching
title_short Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching
title_full Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching
title_fullStr Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching
title_full_unstemmed Evaluation of a three-phase bidirectional isolated DC-DC converter with varying transformer configurations using phase-shift modulation and burst-mode switching
title_sort evaluation of a three-phase bidirectional isolated dc-dc converter with varying transformer configurations using phase-shift modulation and burst-mode switching
publisher MDPI AG
publishDate 2023
_version_ 1806427985819992064
score 13.222552

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