Effects of wind turbine rotor tilt on large-scale wind farms

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Abstract

Recent studies have explored the use of rotor tilt adjustments to reduce wake losses in wind farms. While downward wake deflection in aligned wind farms has shown promise for significant power gains, the impact of wind farm layout on the effectiveness of tilt strategies is not yet fully understood. Additionally, the effect on downstream farms remains unclear. Our large eddy simulations reveal that a rotor tilt of 20 degrees significantly reduces wake losses in aligned wind farms. For wind farms with 8 turbine rows, we observe an overall increase in wind farm productivity of up to 11%. However, tilting the rotors may decrease power production in staggered wind farms, where wake losses are inherently lower due to the increased spacing between turbines. Our findings also suggest that a downstream wind farm might benefit from an upstream farm implementing rotor tilt, although this advantage is primarily observed in the first row of the downstream farm.
Original languageEnglish
Article number092072
JournalJournal of physics: Conference series
Volume2767
Issue number9
DOIs
Publication statusPublished - 10 Jun 2024
EventScience of Making Torque from Wind, TORQUE 2024 - Firenze, Italy
Duration: 28 May 202431 May 2024

Keywords

  • wind farm
  • large eddy simulation
  • rotor tilt
  • wind energy
  • fluid mechanics
  • wind turbine

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