Control of back-to-back-connected neutral-point-clamped converters in wind mill applications

Josep Pou, Eider Robles, Salvador Ceballos, Jordi Zaragoza, Antoni Arias, Pedro Ibañez

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

10 Citations (Scopus)

Abstract

This paper analyzes back-to-back-connected neutral-point-clamped converters in wind turbine applications. A control strategy for the grid-connected converter is proposed that is able to operate under unfavorable voltage conditions. The positive-sequence voltage detector is able to provide an accurate position of the grid voltage vector so that the controller is always synchronized. The wind generator, which is a permanent magnet machine with an external rotor, operates properly throughout a voltage-dip process. The task of balancing voltages on the dc-link capacitors of the back-to-back connection is performed by the modulation strategies. Simulation and experimental results are provided.

Original languageEnglish
Title of host publication2007 European Conference on Power Electronics and Applications, EPE
DOIs
Publication statusPublished - 2007
Event2007 European Conference on Power Electronics and Applications, EPE - Aalborg, Denmark
Duration: 2 Sept 20075 Sept 2007

Publication series

Name2007 European Conference on Power Electronics and Applications, EPE

Conference

Conference2007 European Conference on Power Electronics and Applications, EPE
Country/TerritoryDenmark
CityAalborg
Period2/09/075/09/07

Keywords

  • Converter control
  • Modulation strategy
  • Multilevel converters
  • Renewable energy systems
  • Three-phase system
  • Wind energy

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