The reduction in cost of energy from wind turbines requires many technical contributions from all areas of Wind Energy Conversion Systems. The concept of a telescopic blade has been analyzed to improve rotor blade performance. The effect of a step change is significant for any extension. The current simulation model in WT Perf with a Prandtl tip and hub loss model over-predicts the rotor performance. The correlations developed herein for telescopic blades with step change in the blade chord are in good agreement with the experimental data. The maximum loss for a rotor blade with a step change occurs when the extension is equal to the root blade chord.
Volume Subject Area:
Renewables (Wind, Solar and Geothermal)
Topics:
Blades,
Testing,
Wind tunnels,
Wind turbines,
Rotors,
Chords (Trusses),
Simulation models,
Wind energy
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Copyright © 2011
by ASME
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