Power balancing control of a multilevel converter using high-frequency multi-winding transformer

Chunyang Gu, Zedong Zheng, Yongdong Li, Hongwei Ma, Zhigang Gao

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

3 Citations (Scopus)

Abstract

A novel multilevel converter is proposed where a high-frequency multi-winding transformer is applied to realize the isolation and energy balance instead of the conventional phase-shifting transformer. In the proposed topology, all of the DC buses are connected to the same high-frequency multi-winding transformer through separated H-bridge units. Load powers can be equalized among different windings by the energy delivery using transformer flux. Furthermore, the equivalent circuit is proposed consist of the high-frequency voltage source and high-frequency multi-winding transformer. The power relations between these H-bridge cells are analyzed. Based on these relations, power exchange law among different transformer windings is obtained with high-frequency square wave inputs and outputs. Moreover, a control strategy for power balancing by adjusting the phase of input voltage on each H-bridge unit is proposed. Experimental results are given to validate the proposed strategy.

Original languageEnglish
Title of host publicationConference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
Pages1866-1870
Number of pages5
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012 - Harbin, China
Duration: 2 Jun 20125 Jun 2012

Publication series

NameConference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
Volume3

Conference

Conference2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
Country/TerritoryChina
CityHarbin
Period2/06/125/06/12

Keywords

  • H-bridge converter
  • high-frequency multi-winding transformer
  • multilevel converter
  • power balance

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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