Wake Deflection Control with Wind Direction Changes: Wind Tunnel Comparison of Different Wind Farm Flow Models

The paper studies the effects of model fidelity on the performance of a robust open-loop wake deflection controller. For this purpose, a small cluster of scaled turbines is operated in a boundary layer wind tunnel, where wind direction changes are simulated by a rotating turntable. Results indicate that better models lead to improved power gains and reduced fatigue loading, motivating the development of improved accuracy wind farm flow models.