Studying the effect of over-modulation on the output voltage of three-phase single-stage grid-connected boost inverter

A. Abbas Elserougi, A. S. Abdel-Khalik, A. Massoud, S. Ahmed

Research output: Contribution to journalArticle

3 Citations (Scopus)


Voltage boosting is very essential issue in renewable-energy fed applications. The classical two-stage power conversion process is typically used to interface the renewable energy sources to the grid. For better efficiency, single-stage inverters are recommended. In this paper, the performance of single-stage three-phase grid-connected boost inverter is investigated when its gain is extended by employing over-modulation technique. Using of over-modulation is compared with the employment of third order harmonic injection. The latter method can increase the inverter gain by 15% without distorting the inverter output voltage. The performance of extended gain grid-connected boost inverter is also tested during normal operation as well as in the presence of grid side disturbances. Simulation and experimental results are satisfactory.

Original languageEnglish
Pages (from-to)347-358
Number of pages12
JournalAlexandria Engineering Journal
Issue number3
Publication statusPublished - Sep 2013



  • Boost
  • Extended gain
  • Over-modulation
  • Third harmonic injection

ASJC Scopus subject areas

  • Engineering(all)

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