Investigation of Self Yaw and its Potential using a Hydraulic Soft Yaw System for 5 MW Wind Turbine

Søren Stubkier, Henrik C. Pedersen

Research output: Contribution to journalJournal articleResearchpeer-review

1 Citation (Scopus)

Abstract

The focus of the current paper is on a hydraulic soft yaw system, designed to reduce the loading of the turbine structure, by absorbing wind guest via the hydraulic system, but which also enables the system to be used as a self-aligning yaw system. The system is analyzed with basis in the NREL 5-MW turbine, modeled in FAST, in which a new robust method for implementing Coulomb friction is utilized. Based on this model and a model of the hydraulic system, the influence of friction and wind speed is investigated in relation to the possibility to use the system as a self-aligning yaw system. Similarly the behavior of the hydraulic system is analyzed and it is concluded that the hydraulic yaw system allows selfyaw under normal operating conditions for the turbine. Self-yaw control is possible in wind speeds above 12 m/s when yaw friction is kept below 1 MNm.
Original languageEnglish
JournalWind Engineering
Volume37
Issue number2
Pages (from-to)165-182
Number of pages18
ISSN0309-524X
DOIs
Publication statusPublished - 2013

Fingerprint

Wind turbines
Hydraulics
Turbines
Friction

Cite this

@article{34ce9cc29c55403f9c719cf376426ef1,
title = "Investigation of Self Yaw and its Potential using a Hydraulic Soft Yaw System for 5 MW Wind Turbine",
abstract = "The focus of the current paper is on a hydraulic soft yaw system, designed to reduce the loading of the turbine structure, by absorbing wind guest via the hydraulic system, but which also enables the system to be used as a self-aligning yaw system. The system is analyzed with basis in the NREL 5-MW turbine, modeled in FAST, in which a new robust method for implementing Coulomb friction is utilized. Based on this model and a model of the hydraulic system, the influence of friction and wind speed is investigated in relation to the possibility to use the system as a self-aligning yaw system. Similarly the behavior of the hydraulic system is analyzed and it is concluded that the hydraulic yaw system allows selfyaw under normal operating conditions for the turbine. Self-yaw control is possible in wind speeds above 12 m/s when yaw friction is kept below 1 MNm.",
author = "S{\o}ren Stubkier and Pedersen, {Henrik C.}",
year = "2013",
doi = "10.1260/0309-524X.37.2.165",
language = "English",
volume = "37",
pages = "165--182",
journal = "Wind Engineering",
issn = "0309-524X",
publisher = "SAGE Publications",
number = "2",

}

Investigation of Self Yaw and its Potential using a Hydraulic Soft Yaw System for 5 MW Wind Turbine. / Stubkier, Søren ; Pedersen, Henrik C.

In: Wind Engineering, Vol. 37, No. 2, 2013, p. 165-182.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Investigation of Self Yaw and its Potential using a Hydraulic Soft Yaw System for 5 MW Wind Turbine

AU - Stubkier, Søren

AU - Pedersen, Henrik C.

PY - 2013

Y1 - 2013

N2 - The focus of the current paper is on a hydraulic soft yaw system, designed to reduce the loading of the turbine structure, by absorbing wind guest via the hydraulic system, but which also enables the system to be used as a self-aligning yaw system. The system is analyzed with basis in the NREL 5-MW turbine, modeled in FAST, in which a new robust method for implementing Coulomb friction is utilized. Based on this model and a model of the hydraulic system, the influence of friction and wind speed is investigated in relation to the possibility to use the system as a self-aligning yaw system. Similarly the behavior of the hydraulic system is analyzed and it is concluded that the hydraulic yaw system allows selfyaw under normal operating conditions for the turbine. Self-yaw control is possible in wind speeds above 12 m/s when yaw friction is kept below 1 MNm.

AB - The focus of the current paper is on a hydraulic soft yaw system, designed to reduce the loading of the turbine structure, by absorbing wind guest via the hydraulic system, but which also enables the system to be used as a self-aligning yaw system. The system is analyzed with basis in the NREL 5-MW turbine, modeled in FAST, in which a new robust method for implementing Coulomb friction is utilized. Based on this model and a model of the hydraulic system, the influence of friction and wind speed is investigated in relation to the possibility to use the system as a self-aligning yaw system. Similarly the behavior of the hydraulic system is analyzed and it is concluded that the hydraulic yaw system allows selfyaw under normal operating conditions for the turbine. Self-yaw control is possible in wind speeds above 12 m/s when yaw friction is kept below 1 MNm.

U2 - 10.1260/0309-524X.37.2.165

DO - 10.1260/0309-524X.37.2.165

M3 - Journal article

VL - 37

SP - 165

EP - 182

JO - Wind Engineering

JF - Wind Engineering

SN - 0309-524X

IS - 2

ER -