Control Strategy for Variable-Speed, Stall-Regulated Wind Turbines

Research output: Contribution to conferencePaper


A variable-speed, constant-pitch wind turbine was investigated to evaluate the feasibility of constraining its rotor speed and power output without the benefit of active aerodynamic control devices. A strategy was postulated to control rotational speed by specifying the demanded generator torque. By controlling rotor speed in relation to wind speed, the aerodynamic power extracted by the bladesform the wind was manipulated. Specifically, the blades were caused to stall in high winds. In low and moderate winds, the demanded generator torque and the resulting rotor speed were controlled to cause the wind turbine to operate near maximum efficiency. A computational model was developed, and simulations were conducted of operation in high turbulent winds. Results indicated that rotor speedand power output were well regulated.
Original languageAmerican English
Number of pages7
StatePublished - 1998
EventAmerican Controls Conference - Philadelphia, Pennsylvania
Duration: 24 Jun 199826 Jun 1998


ConferenceAmerican Controls Conference
CityPhiladelphia, Pennsylvania

NREL Publication Number

  • NREL/CP-500-24311


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