Doubly-Fed Induction Generator Control Under Voltage Sags
Location: USA
Publication date: 2008-11-11
Published in: IEEE Energy 2030 Conference 2008, Atlanta (USA) - ENERGY 2008
ref. DOI: 10.1109/ENERGY.2008.4781064

Local members

Alvaro Luna

PhD. Senior Researcher.

External members

Lima, K. , Watanabe, E. , Teodorescu, R. , Blaabjerg, F.



This paper proposes a new control technique to improve the fault-ride through capability ofdoubly fed induction generators (DFIG). In such generators the appearance of severe voltagesags at the coupling point make rise to high over currents at the rotor/stator windings, something that makes necessary to protect the machine as well as the rotor side power converter. As a difference with the most extended solution, that reduces these currents by means of the connection of a crowbar circuit, this works intends to enhance the DFIG's response in such conditions without introducing extra hardware in the system. To this end, the proposed controlsystem feedback the stator currents as the rotor current reference during the fault, until they are driven to their nominal values. The feasibility of this proposal has been proven by means of mathematical and simulation models, based on PSCAD/EMTDC.


Associated projects

National public