Behavior of doubly-fed induction generator during symmetrical voltage dips — Experimental results

Wind energy conversion systems using the doubly-fed induction generator (DFIG) are the most commercialized topology worldwide, because this technology uses converters dimensioned for ±30% of the system rated power, thus reducing the equipment cost. The direct connection of the DFIG stator to the electrical system increases its sensitivity to grid disturbances. In this context, this paper analyzes the DFIG behavior during balanced voltage sags using the machine classical model for the theoretical development and analyzing experimental results of a 2.2 kW test bench equipped with a crowbar device. The obtained results are useful in the development of strategies to improve the DFIG supportability during grid disturbances.

[1]  F.W. Fuchs,et al.  Analysis of three phase grid failure and Doubly Fed Induction Generator ride-through using crowbars , 2007, 2007 European Conference on Power Electronics and Applications.

[2]  Yongdong Li,et al.  Dynamic behavior of doubly fed induction generator wind turbines under three-phase voltage dips , 2009, 2009 IEEE 6th International Power Electronics and Motion Control Conference.

[3]  I. Erlich,et al.  Dynamic Behavior of DFIG-Based Wind Turbines during Grid Faults , 2007, 2007 Power Conversion Conference - Nagoya.

[4]  Pál K. Kovács,et al.  Transient Phenomena in Electrical Machines , 1984 .

[5]  P. Sanchis,et al.  Dynamic Behavior of the Doubly Fed Induction Generator During Three-Phase Voltage Dips , 2007, IEEE Transactions on Energy Conversion.

[6]  I. Erlich,et al.  Grid code requirements concerning connection and operation of wind turbines in Germany , 2005, IEEE Power Engineering Society General Meeting, 2005.

[7]  J. Morren,et al.  Ridethrough of wind turbines with doubly-fed induction generator during a voltage dip , 2005, IEEE Transactions on Energy Conversion.

[8]  E. Gubia,et al.  Control of Doubly Fed Induction Generator under symmetrical voltage dips , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[9]  J. López,et al.  Wind Turbines Based on Doubly Fed Induction Generator Under Asymmetrical Voltage Dips , 2008, IEEE Transactions on Energy Conversion.

[10]  J. Niiranen,et al.  Performance Study of a Doubly Fed Wind-Power Induction Generator Under Network Disturbances , 2006, IEEE Transactions on Energy Conversion.

[11]  Wilfried Hofmann,et al.  Reactive Power Control Design in Doubly Fed Induction Generators for Wind Turbines , 2009, IEEE Transactions on Industrial Electronics.