DC link voltage control of single phase back-to-back converter for medium voltage motor drive

Jeong Mock Yoo, Hyun Sam Jung, Seung Ki Sul, Hak Jun Lee, Chanook Hong

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

5 Scopus citations

Abstract

This paper describes DC link voltage control method of single phase back-to-back converter for medium voltage motor drive system. Cascaded H-Bridge (CHB) topology is widely used to achieve medium voltage operation and low harmonic distortion, simultaneously. Each power cell of CHB should have the isolated DC link voltage by using input transformer and rectifier. Instead of three phase Active Front-End (AFE) which is mostly used, using single phase AFE could make the structure of input transformer and power cell be simple. However, even in the same three phase windings of the input transformer, the DC link voltage of each single phase AFE might be different due to the power imbalance of each phase. In this paper, DC link voltage balancing control method that uses the negative sequence voltage of converter is described. The proposed method is verified with experimental results. The DC link voltage of each AFE has been controlled within 1% error of its reference value.

Original languageEnglish
Title of host publication2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3043-3049
Number of pages7
ISBN (Electronic)9781509012107
DOIs
StatePublished - 13 Jul 2016
Event8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016 - Hefei, China
Duration: 22 May 201626 May 2016

Publication series

Name2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016

Conference

Conference8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Country/TerritoryChina
CityHefei
Period22/05/1626/05/16

Keywords

  • Cascaded H-Bridge
  • DC link voltage control
  • Medium Voltage Drive
  • Single phase Active Front-End

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