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Grid-fault ride-through analysis and control of wind turbines with doubly fed induction generators
- Source :
-
Electric Power Systems Research . Feb2010, Vol. 80 Issue 2, p184-195. 12p. - Publication Year :
- 2010
-
Abstract
- Abstract: This paper deals with the low voltage ride-through (LVRT) control of wind turbines with doubly fed induction generators (DFIGs) under symmetrical voltage dips. The investigation first develops a mathematical formula for the rotor current and rotor voltage when DFIG is subjected to a symmetrical voltage dip. From the analysis, the reasons of rotor inrush current and factors influencing it are inferred. Then, a control scheme enhancing the wind turbine LVRT capability is designed and simulated. The proposed control scheme consists of a nonlinear control strategy applied to the rotor-side converter and a dc-link voltage control applied to the grid-side converter. It improves the damping of DFIG transient response and minimizes oscillations of rotor current, electromagnetic torque and dc-link voltage during the generator voltage dip. It also limits the peak value of these quantities. At the end, results of theoretical analyses are verified by time domain simulations. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03787796
- Volume :
- 80
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Electric Power Systems Research
- Publication Type :
- Academic Journal
- Accession number :
- 45555055
- Full Text :
- https://doi.org/10.1016/j.epsr.2009.08.019