Coupled inductor based multi-phase buck converter for magnet power supply

Hwasoo Seok, Sooa Kim, Won Shik Choi, Min Jae Kim, Jin S. Lee, Minsung Kim

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

3 Scopus citations

Abstract

This paper presents design and control of the coupled inductor based multi-phase buck converter for magnet power supply. Using the multi-phase buck structure and inter-leaved operation, we were able to reduce the output current ripples significantly. The coupled inductors for each two phases are adopted to reduce the number of cores and output current ripples. The circuit operates in continuous conduction mode, so it experiences less current ripples and can achieve higher efficiency than in the discontinuous conduction mode. The effects of parasitic components are considered to improve the model accuracy and dynamic performance. We take the parasitic components into account to construct the dynamic model of the proposed converter and used it to design the feed-forward and feedback controller. Experimental results verify the effectiveness of proposed circuit topology and control scheme.

Original languageEnglish
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1020-1026
Number of pages7
ISBN (Electronic)9781509053667
DOIs
StatePublished - 17 May 2017
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: 26 Mar 201730 Mar 2017

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Country/TerritoryUnited States
CityTampa
Period26/03/1730/03/17

Keywords

  • Accurate control
  • Buck converter
  • Low ripple
  • Multi-phase
  • Parastic components
  • System modeling

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