DocumentCode :
3505785
Title :
A dynamic LVRT solution for Doubly-Fed Induction Generator
Author :
Abdel-Baqi, Omar ; Nasiri, Adel
Author_Institution :
Power Electron. & Electr. Motor Drives Lab., Univ. of Wisconsin-Milwaukee, Milwaukee, WI, USA
fYear :
2009
fDate :
3-5 Nov. 2009
Firstpage :
825
Lastpage :
830
Abstract :
Doubly-fed induction generators (DFIG) have become the most common type of wind turbine generators. However, this type of generator is susceptible to grid side low voltage and short circuits, due to existence of a power electronics converter on the rotor side. When a short circuit or voltage sag happens on the grid side, the rotor current of the generator tends to rise, which could cause damage to the rotor converter. Design and implementation of a series converter on the stator side is presented in this paper to limit the current rise in the rotor. This system includes an active DC/AC inverter, three series transformers and a DC bus capacitor. To lower the rating of the components and make the system viable for practical solutions, an exponential decaying sinusoidal voltage instead of a pure sinusoidal voltage is applied by the converter during short circuit.
Keywords :
asynchronous generators; invertors; power capacitors; power supply quality; power transformers; DC bus capacitor; active DC-AC inverter; doubly-fed induction generator; dynamic LVRT solution; power electronics converter; three series transformers; voltage sag; wind turbine generators; Circuits; Induction generators; Low voltage; Mesh generation; Power electronics; Power generation; Rotors; Voltage fluctuations; Wind energy generation; Wind turbines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, 2009. IECON '09. 35th Annual Conference of IEEE
Conference_Location :
Porto
ISSN :
1553-572X
Print_ISBN :
978-1-4244-4648-3
Electronic_ISBN :
1553-572X
Type :
conf
DOI :
10.1109/IECON.2009.5415026
Filename :
5415026
Link To Document :
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