A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults

Ehsan Afshari, Gholam Reza Moradi, Yongheng Yang, Babak Farhangi, Shahrokh Farhangi

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

12 Citationer (Scopus)

Abstrakt

Unbalanced grid voltage dips may lead to unbalanced non-sinusoidal current injections, dc-link voltage oscillations, and active and/or reactive power oscillations with twice the grid fundamental frequency in three-phase grid-connected Photovoltaic (PV) systems. Double grid frequency oscillations at the dc-link of the conventional two-stage PV inverters can further deteriorate the dc-link capacitor, which is one of the most life-limiting components in the system. Proper controls of these converters may efficiently address this problem. In those solutions, Current Reference Calculation (CRC) is one of the most important issues that should be coped with for a reliable operation of grid-connected converters under unbalanced grid faults. Accordingly, this paper reviews the existing CRC methods and presents a current reference generation method, which can have 16 unique modes. Issues are also investigated in this paper that the two-stage three-phase converter faces in each mode. The performance of the CRC method is verified and compared to the prior-art methods by simulations under unbalanced voltage dips.
OriginalsprogEngelsk
TitelProceedings of the 2017 IEEE Power and Energy Conference at Illinois (PECI)
Antal sider7
ForlagIEEE Press
Publikationsdatofeb. 2017
ISBN (Trykt)978-1-5090-5550-0
DOI
StatusUdgivet - feb. 2017
Begivenhed2017 IEEE Power and Energy Conference at Illinois (PECI) - Champaign, USA
Varighed: 23 feb. 201724 feb. 2017

Konference

Konference2017 IEEE Power and Energy Conference at Illinois (PECI)
LandUSA
ByChampaign
Periode23/02/201724/02/2017

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