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Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof

  • US 20050200134A1
  • Filed: 05/06/2005
  • Published: 09/15/2005
  • Est. Priority Date: 01/10/2002
  • Status: Active Grant
First Claim
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1. A wind turbine with an active annual plane area control mechanism comprising a plurality of blades attached to a rotor for transmitting the wind force acting on the blades to the output shaft of the wind turbine connected to the rotor, wherein each of said blade is divided into a variable length blade part and a blade body fixed to the rotor and connecting to the root of said variable length blade part, and there are provided operating conditions detectors for detecting the operating conditions of the wind turbine, a blade length controller for comparing the detected signals of the operating conditions inputted from said operating conditions detectors with predetermined permissible values of operating conditions and calculating the amounts of active annular plane area and blade length to be adjusted for optimal operation based on the result of comparisons, and a blade length adjusting mechanism for changing blade length based on the calculated blade length inputted from said blade length controller.

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