Decoupled Double Synchronous Reference Frame Current Controller for Unbalanced Grid Voltage Conditions

M. Reyes, Pedro Rodriguez, S. Vazquez, A. Luna, J. M. Carrasco, Remus Teodorescu

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

9 Citations (Scopus)

Abstract

Due to the growing changes in the electrical network related to the new distributed generation scheme and the integration of renewable energy sources, new requirements for grid-connected power converters are being defined in the new grid codes. The injection of positive- and negative-sequence current components is becoming necessary for achieving new capabilities like the reactive power injection during a grid fault. This paper deals with a fundamental issue in this topic, i.e., the performance of the current controller. Classical dq controllers, which are extensively used in industrial applications, degrade its performance when both sequences are involved, as unavoidable oscillations in the dq axes appear. In this paper, a new scheme for controlling positive- and negative-sequence currents using dq controllers is proposed, based on an enhanced Double Synchronous Reference Frame (DSRF) controller. In this paper the DSRF controller is improved by adding a decoupling network which counteracts the oscillations caused by the presence of both sequences. Experimental results will demonstrate the validity of the proposed Decoupled DSRF (DDSRF) controller.
Original languageEnglish
Title of host publicationProceedings of the 2012 IEEE Energy Conversion Congress and Exposition (ECCE)
PublisherIEEE Press
Publication date2012
Pages4676-4682
ISBN (Print)978-1-4673-0802-1
ISBN (Electronic)978-1-4673-0801-4
DOIs
Publication statusPublished - 2012
Eventthe Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh Convention Center, Raleigh, United States
Duration: 15 Sep 201220 Sep 2012

Conference

Conferencethe Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012
LocationRaleigh Convention Center
CountryUnited States
CityRaleigh
Period15/09/201220/09/2012

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