Power Properties of Two Interacting Wind Turbine Rotors

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Abstract

In the current experiments, two identical wind turbine models were placed in uniform flow conditions
in a water flume. The initial flow in the flume was subject to a very low turbulence level, limiting the
influence of external disturbances on the development of the inherent wake instability. Both rotors are threebladed and designed using blade element/lifting line (BE/LL) optimum theory at a tip speed ratio, λ, of 5 with a constant design lift coefficient along the span, CL= 0.8. Measurements of the rotor characteristics were conducted by strain sensors installed in the rotor mounting. The resulting power capacity has been studied and analyzed at different rotor positions and a range of tip speed ratios from 2 to 8 and a simple algebraic relationship between the velocity deficit in the wake of the front turbine and the power of the second turbine was found, when both rotors have the coaxial position
Original languageEnglish
Title of host publicationProceedings of the 2nd International Conference On Next Generation Wind Energy
Number of pages8
Publication date2016
Publication statusPublished - 2016
Event2nd International Conference On Next Generation Wind Energy - Lund, Sweden
Duration: 24 Aug 201626 Aug 2016

Conference

Conference2nd International Conference On Next Generation Wind Energy
CountrySweden
CityLund
Period24/08/201626/08/2016

Keywords

  • Wind Farm
  • Rotor wake
  • Interaction of wind turbines
  • Power
  • Thrust

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