Pitch and Torque Cntrl (Region 3)

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Re: Pitch and Torque Cntrl (Region 3)

Postby Jason.Jonkman » Mon Jan 14, 2019 8:39 am

Dear Muddassir,

Your power is likely going so high because:
  • the generator torque in your model is constant for speeds higher than rated speed (Region 3 control),
  • the aerodynamic torque is higher than the rated generator torque, and
  • you don't have active blade-pitch control to reduce the aerodynamic torque at high winds to regulate the speed,
which means that the rotor will overspeed (and generator power will exceed rated) until the aerodynamic torque balances with the generator torque.

You'll need another means of control to operate in Region 3 e.g. active blade pitch control.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901

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