cost and has the potential to be built economically at power
levels above 1.5 MW, e.g., for off-shore applications.
A dynamic model of the DFIG was derived to develop a
vector controller to decouple dynamically active and reactive
power control. Simulations show excellent response of
the DFIG independent of speed. Measurements obtained
from 1.5MWunits currently in operation confirm the theoretical
results.
Acknowledgment
The authors would like to thank Tacke Windenergie,
Salzbergen, Germany, for the measurements shown in Fig.
13.