4-Phase Series-capacitor Buck Converter

Chan Viet Nguyen, Honnyong Cha, Van Dai Bui, Tam Nguyen Bang Pham, Phuong Thanh Ho, Quoc Dung Phan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The series-capacitor (SC) converter is an attractive choice due to its capacity for achieving a high step-down conversion ratio, reducing voltage stress on switching devices, and maintaining inherent current balance. To enhance power capacity and minimize output current fluctuations, a multi-phase series-capacitor configuration was introduced. However, as the number of phases increases, the operational range of the converter proportionally decreases by a factor of n, where n represents the number of phases. Consequently, the suitability of the multi-phase SC topology diminishes. This study introduces a 4-phase series-capacitor (4P-SC) converter that extends the conventional SC structure to attain higher output power. Moreover, the proposed converter reduces output current ripple and requires only half the number of current sensors compared to the conventional 4-phase buck converter (4P-IBC). In this paper, the proposed structure is validated by simulation.

Original languageEnglish
Title of host publicationProceedings - 2023 International Symposium on Electrical and Electronics Engineering, ISEE 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages191-196
Number of pages6
ISBN (Electronic)9798350315486
DOIs
StatePublished - 2023
Event2023 International Symposium on Electrical and Electronics Engineering, ISEE 2023 - Ho Chi Minh City, Viet Nam
Duration: 19 Oct 202320 Oct 2023

Publication series

NameProceedings - 2023 International Symposium on Electrical and Electronics Engineering, ISEE 2023

Conference

Conference2023 International Symposium on Electrical and Electronics Engineering, ISEE 2023
Country/TerritoryViet Nam
CityHo Chi Minh City
Period19/10/2320/10/23

Keywords

  • Asymmetrical PWM strategy
  • Current balancing
  • Series-capacitor converter

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