Study of a passive pitching rotor using blade element momentum theory coupled to a rigid-body model

Journal Article (2022)
Author(s)

N Krishnan (TU Delft - Wind Energy)

A.C. Viré (TU Delft - Wind Energy)

Rikus Van De Klippe (TouchWind B.V.)

Research Group
Wind Energy
Copyright
© 2022 Navaneetha Krishnan, A.C. Viré, Rikus Van De Klippe
DOI related publication
https://doi.org/10.1088/1742-6596/2265/3/032057
More Info
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Publication Year
2022
Language
English
Copyright
© 2022 Navaneetha Krishnan, A.C. Viré, Rikus Van De Klippe
Research Group
Wind Energy
Issue number
3
Volume number
2265
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Abstract

Misaligned wind turbine rotors experience uneven loads because of two effects: dissymmetry of lift, and skewed wake effect. Rotor-crafts that have a similar problem introduce various mechanisms to combat this - one of them is to add a δ3-hinge. The hinge provides the blade with an additional degree of freedom to relieve the unbalanced loads; in theory, it is a self-correcting mechanism. In this work, we couple a blade element momentum (BEM) approach for the aerodynamics to a rigid-body model that simulates the hinge rotation. The results from BEM are used to identify the working mechanisms of the hinged rotor and highlight the strengths and weaknesses of such a rotor.