A New Hybrid Control for Zero Voltage Switching Based on High Frequency Partial Power Buck-Boost Converter

Di Wu*, Yanda Lyu, Pinhe Wang, Asier Romero Arruti, Ziwei Ouyang, Michael Andreas Esbern Andersen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper focuses on the development of a partial power buck-boost converter designed to accommodate a wide input voltage range, spanning from 38 V to 72 V DC, and produce a fixed output voltage of 107 V DC. This converter is intended for use in data center applications and is configured to deliver 1.2 kW of power. The primary objective of this study is to achieve the highest possible efficiency for the converter. To attain this goal, we conduct an efficiency comparison among different control strategies aimed at achieving Zero Voltage Switching (ZVS). These strategies are thoroughly analyzed and simulated using a comprehensive loss model. Notably, a novel hybrid control strategy is introduced, demonstrating significant advantages in terms of power density when compared to Critical Conduction Mode (CRM) control, and also delivering efficiency benefits in comparison to Fix-Frequency control. Furthermore, the research findings are substantiated through practical experimentation involving a two-phase synchronous buck-boost converter prototype.

Original languageEnglish
Title of host publicationProceedings of 2024 IEEE Applied Power Electronics Conference and Exposition
PublisherIEEE
Publication date2024
Pages2705-2711
ISBN (Electronic)9798350316643
DOIs
Publication statusPublished - 2024
Event39th Annual IEEE Applied Power Electronics Conference and Exposition - Beach Convention & Entertainment Center, Long Beach, United States
Duration: 25 Feb 202429 Feb 2024

Conference

Conference39th Annual IEEE Applied Power Electronics Conference and Exposition
LocationBeach Convention & Entertainment Center
Country/TerritoryUnited States
CityLong Beach
Period25/02/202429/02/2024

Keywords

  • Buck-Boost Converter
  • Coupled Inductor
  • CRM
  • Hybird Control
  • Partial Power
  • ZVS

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