Fault ride-through capability of wind turbine connected to the grid in case of unbalanced voltages

This paper deals with control of wind turbine connected to the grid through the back-to-back converter in case of unbalanced grid voltages. The motivation for this research has been found in recent transmission and distribution grid code, which demand modern wind turbines to stay connected to the gr...

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Bibliographic Details
Published in:Thermal science 2016, Vol.20 (suppl. 2), p.495-512
Main Authors: Ivanovic, Zoran, Vekic, Marko, Grabic, Stevan, Todorovic, Ivan
Format: Article
Language:English
Subjects:
Controllers
Converters
Hardware-in-the-loop simulation
Reactive power
Unbalance
Vector currents
Wind turbines
Online Access:Get full text
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Summary:This paper deals with control of wind turbine connected to the grid through the back-to-back converter in case of unbalanced grid voltages. The motivation for this research has been found in recent transmission and distribution grid code, which demand modern wind turbines to stay connected to the grid and supply the highest possible apparent power during the grid disturbances. In order to comply with these requirements we proposed improved dual vector current controller to deal with the unbalance imposed by the electrical grid. Controller provides injection of active and reactive power to the grid, even if the voltages are lower than the nominal one. The results are validated using low power prototype and contemporary hardware-in-the-loop emulation platform. In both cases the controller is based on TMS320F2812 DSP.
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI150929033I