Effect of voltage sags on digitally controlled line connected switched-mode power supplies

Lajos Török, Stig Munk-Nielsen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Different voltage disorders like voltage fluctuations, sags, frequency variations may occur in the power supply networks due to different fault conditions. These deviations from normal operation affects in different ways the line connected devices. Standards were developed to protect and ensure immunity to these voltage deviations. In the following paper an analysis of different grid disturbances is presented. Some limitations and immunity requirements based on standards for devices connected to low voltage grid are described. The behavior of digitally controlled boost PFC converter in case of voltage sags is analyzed. Fault tolerant control algorithm was designed, implemented and is discussed. The fault conditions and their effects were investigated at different power levels.
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2012
Number of pages6
Place of PublicationBrasov
PublisherIEEE Press
Publication date2012
Pages770-775
DOIs
Publication statusPublished - 2012
Event13th International Conference on Optimization of Electrical and Electronic Equipment - Brasov, Romania
Duration: 24 May 201226 May 2012

Conference

Conference13th International Conference on Optimization of Electrical and Electronic Equipment
Country/TerritoryRomania
CityBrasov
Period24/05/201226/05/2012

Keywords

  • Voltage sag
  • PFC
  • Digital control

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