Potential of power gain with improved yaw alignment

Knud Abildgaard Kragh, Morten Hartvig Hansen

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

One of the primary criteria for extracting energy from the wind using horizontal axis upwind wind turbines is the ability to align the rotor axis with the dominating wind direction. The conventional way of estimating the direction of the incoming flow is by using transducers placed atop the nacelle and downwind of the rotor. Recent studies have suggested methods based on advanced upwind measurement technologies for estimating the inflow direction and improving the yaw alignment. In this study, the potential of increased power output with improved yaw alignment is investigated by assessing the performance of a current measurement and yaw control system. The performance is assessed by analyzing data containing upwind wind speed and direction measurements from a met mast, and yaw angle and power production measurements from an operating offshore wind turbine. The results of the analysis indicate that the turbine is operating with a wind speed‐dependent yaw error distribution. The theoretical annual energy production loss due to the yaw error distribution of the existing system is estimated to approximately 0.2%. Copyright © 2014 John Wiley & Sons, Ltd.
Original languageEnglish
JournalWind Energy
Volume18
Issue number6
Pages (from-to)979-989
Number of pages11
ISSN1095-4244
DOIs
Publication statusPublished - 2015

Keywords

  • wind turbine
  • yaw alignment
  • annual energy production
  • operational data

Fingerprint

Dive into the research topics of 'Potential of power gain with improved yaw alignment'. Together they form a unique fingerprint.

Cite this