A systematic hub loads model of a horizontal wind turbine

Romans Kazacoks, Peter Jamieson

Research output: Contribution to journalConference Contribution

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Abstract

The wind turbine industry has focused offshore on increasing the capacity of a single unit through up-scaling their machines. There is however a lack of systematic studies on how loads vary due to properties of a wind turbine and scaling of wind turbines. The purpose of this paper is to study how applied blade modifications, with similarities such as mass, stiffness and dimensions, influence blade root moments and lifetime damage equivalent loads (DELs) of the rotor blades. In order to produce fatigue load blade root moment trends based on the applied modifications. It was found that a linear trend of lifetime DELs based on the applied modifications of blades, which have effect on the natural frequency of blade of the original or reference model. As the control system was tuned for the specific frequency of the reference model. The linear trend of lifetime DELs was generated as long as the natural frequency of the reference model was preserved. For larger modifications of the wind turbine the controller would need retuning.
Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalJournal of Physics: Conference Series
Volume524
Issue number1
DOIs
Publication statusPublished - 10 Jun 2014
EventThe Science of Making Torque from Wind 2014 (TORQUE 2014) - Denmark, Copenhagen, Denmark
Duration: 18 Jun 201420 Jun 2014

Fingerprint

hubs
wind turbines
blades
Wind turbines
Natural frequencies
damage
trends
life (durability)
resonant frequencies
moments
rotor blades
scaling
Turbomachine blades
Rotors
Stiffness
Fatigue of materials
stiffness
controllers
Control systems
Controllers

Keywords

  • fatigue
  • scaling

Cite this

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abstract = "The wind turbine industry has focused offshore on increasing the capacity of a single unit through up-scaling their machines. There is however a lack of systematic studies on how loads vary due to properties of a wind turbine and scaling of wind turbines. The purpose of this paper is to study how applied blade modifications, with similarities such as mass, stiffness and dimensions, influence blade root moments and lifetime damage equivalent loads (DELs) of the rotor blades. In order to produce fatigue load blade root moment trends based on the applied modifications. It was found that a linear trend of lifetime DELs based on the applied modifications of blades, which have effect on the natural frequency of blade of the original or reference model. As the control system was tuned for the specific frequency of the reference model. The linear trend of lifetime DELs was generated as long as the natural frequency of the reference model was preserved. For larger modifications of the wind turbine the controller would need retuning.",
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A systematic hub loads model of a horizontal wind turbine. / Kazacoks, Romans; Jamieson, Peter.

In: Journal of Physics: Conference Series, Vol. 524, No. 1, 10.06.2014, p. 1-10.

Research output: Contribution to journalConference Contribution

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AU - Jamieson, Peter

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AB - The wind turbine industry has focused offshore on increasing the capacity of a single unit through up-scaling their machines. There is however a lack of systematic studies on how loads vary due to properties of a wind turbine and scaling of wind turbines. The purpose of this paper is to study how applied blade modifications, with similarities such as mass, stiffness and dimensions, influence blade root moments and lifetime damage equivalent loads (DELs) of the rotor blades. In order to produce fatigue load blade root moment trends based on the applied modifications. It was found that a linear trend of lifetime DELs based on the applied modifications of blades, which have effect on the natural frequency of blade of the original or reference model. As the control system was tuned for the specific frequency of the reference model. The linear trend of lifetime DELs was generated as long as the natural frequency of the reference model was preserved. For larger modifications of the wind turbine the controller would need retuning.

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