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http://dx.doi.org/10.3795/KSME-A.2014.38.6.609

Aerodynamic Characteristics of Several Airfoils for Design of Passive Pitch Control Module of 10 kW Class  

Kang, Sang Kyun (Dept. of Mechanical Engineering, Graduate school of Kunsan Nat'l Univ.,)
Lee, Ji Hyun (Samwon Millennia, Inc.)
Lee, Jang-Ho (School of Mechanical and Automotive Engineering, Kunsan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.6, 2014 , pp. 609-617 More about this Journal
Abstract
Even though the variable pitch control of a wind turbine blade is known as an effective component for power control over the rated wind speed, it has limited applicability to small wind turbines because of its relatively high cost on the price of small wind turbine. Instead, stall control is generally applied in the blade design without any additional cost. However, stall delay can frequently be caused by high turbulence around the turbine blade, and it can produce control failures through excessive rotational speed and overpowering the electrical generator. Therefore, a passive pitch control module should be considered, where the pitch moves with the aerodynamic forces of the blade and returns by the elastic restoring force. In this study, a method to calculate the pitch moment, torque, and thrust based on the lift and drag of the rotating blade wing was demonstrated, and several effective wing shapes were reviewed based on these forces. Their characteristics will be estimated with variable wind speed and be utilized as basic data for the design of the passive pitch control module.
Keywords
Pitch Control System Module; Variable Pitch; Airfoil; Aerodynamic Characteristics; Thrust; Torque;
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Times Cited By KSCI : 1  (Citation Analysis)
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