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- W4383822164 abstract "Abstract Vertical-axis wind turbines are great candidates to enable wind power extraction in urban and off-shore applications. Currently, concerns around turbine efficiency and structural integrity limit their industrial deployment. Flow control can mitigate these concerns. Here, we experimentally demonstrate the potential of individual blade pitching as a control strategy and explain the flow physics that yields the performance enhancement. We perform automated experiments using a scaled-down turbine model coupled to a genetic algorithm optimiser to identify optimal pitching kinematics at on- and off-design operating conditions. Optimal blade kinematics yields a three-fold power coefficient increase at both operating conditions compared to the non-actuated turbine and a 70% reduction in structure-threatening load fluctuations at off-design conditions. Based on flow field measurements, we uncover how blade pitching manipulates the flow structures to enhance performance. Our results can aid vertical-axis wind turbines to increase their much-needed contribution to our energy needs." @default.
- W4383822164 created "2023-07-11" @default.
- W4383822164 creator A5044689368 @default.
- W4383822164 creator A5072266762 @default.
- W4383822164 date "2023-07-10" @default.
- W4383822164 modified "2023-10-01" @default.
- W4383822164 title "Optimal blade pitch control for enhanced vertical-axis wind turbine performance" @default.
- W4383822164 doi "https://doi.org/10.21203/rs.3.rs-3121052/v1" @default.
- W4383822164 hasPublicationYear "2023" @default.
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