Study On The Control Of Grid-integrated DFIG Wind Power Generation Based

19721212

Abstract:
Accordance with the fact that DFIGs are normally designed to run at high power factor even at unity power factor, while this feature leads it unable to generate enough reactive power dynamically to support the voltage stability of the grid especially when the grid is weak and in failures, additional transient voltage control components and a coordinative control of the rotor side convertor and grid side converter of DFIG are put forward in this paper to enable both convertors to generate reactive power and support the grid voltage during a voltage drop by grid failure. The simulations conducted in Matlab/Simulink show the transient voltage control capabilty of the DFIG the additional control components and its help to ride through the grid low voltage and supports to the grid voltage stability.
( M+ \7 X! b) n4 R6 m9 VKeywords: DFIG, Grid integration, Stability, Low voltage ride-through, Control strategy