Modeling Wind Turbine 
                      Generators
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             Wind energy conversion
    • Wind energy has been in use for centuries
    • Originally used for pumping water, grinding 
      grain, or for agricultural purposes
    • In the past two decades technical 
      advancements have made it possible to use 
      wind energy for electricity production
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          Wind generation technology
    • Wind turbine types
       –Conventional induction generators
       –Induction machines with wound rotor and static 
         power converter technologies
    • Important factors for wind integration
       –Steady state performance – P, Q, PF
       –Dynamic response to perturbation
       –Intermittency and time variation of P and Q
       –Output quality
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            Wind generation technology
     • Wind farm related capabilities
         –Has great impact on aggregate plant performance
         –Advanced function can be implemented
            • VAr support using distributed resources
            • Controlled ramp rate
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            Fixed speed wind turbine
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