EAN: 9783954891399

MODELING ANALYSIS AND ENHANCEMENT OF THE PERFOR...

Recently  wind electrical power systems are getting a lot of attention since they are cost
competitive  environmentally clean  and safe renewable power source as compared with the fossil
fuel and nuclear power generation. A special type of induction generator  called a doubly fed
induction generator (DFIG)  is used extensively for high-power wind applications. They are used
more and more in wind turbine applications due to the ease of controllability  the high energy
efficiency  and the improved power quality.This research aims to develop a method of a field
orientation scheme for control both  the active and the reactive powers of a DFIG that are
driven by a wind turbine. Also  the dynamic model of the DFIG  driven by a wind turbine during
grid faults  is analyzed and developed  using the method of symmetrical components. Finally 
this study proposes a novel fault ride-through (FRT) capability with a suitable control
strategy (i.e. the ability of the power system to remain connected to the grid during faults).

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