A simple control algorithm to avoid flux density bias in isolated full-bridge topologies

Lijun Hang*, Xiaoyuan Hong, Josep M. Guerrero, Zhengyu Lu, Weizhong Fang

*Corresponding author

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearchpeer-review

1 Citation (Scopus)

Abstract

Isolated full-bridge topologies are used in some industrial applications due to its characteristic of cost-effective and high power density. However, the transformer used for isolation in such topologies can be easily saturated. In this paper, a control algorithm to suppress flux density bias in the transformer is proposed. The algorithm can be easily implemented into a low cost DSP. Details of the practical implementation of the proposed algorithm are shown. An example of application over a 3 kW single-stage power factor corrector is presented. The experimental results illustrate the feasibility of the proposed digital control solution.
Original languageEnglish
Publication date1 Dec 2009
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009 - Porto, Portugal
Duration: 3 Nov 20095 Nov 2009

Conference

Conference35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009
CountryPortugal
CityPorto
Period03/11/200905/11/2009
SponsorThe Institute of Electrical and Electronics Engineers (IEEE), IEEE Industrial Electronics Society (IES), Society of Instrument and Control Engineers (SICE-Japan), University of Porto, NOVA University Lisbon

Keywords

  • DC bias
  • Digital signal processors (DSP)
  • Full-bridge (FB)
  • Isolated topologies

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