Impact of dielectric barrier discharge plasma on the wake of a wind turbine blade section oscillating in plunge

Maleki, GholamHossein; Davari, Ali; Soltani,

doi:10.1177/09576509211033700

Cited by 2 publications

(1 citation statement)

References 30 publications

(34 reference statements)

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“…The wind turbine (WT) population is experiencing steep growth in the last few decades with increased awareness of the advantages of green energy uses, 1 availability of fixed fossil fuel in the universe, 2,3 increased power demand, 4,5 etc. Wind power systems are grabbing attention in recent times mainly because of available wind power potential and WT power conversion pattern, decreased power generation cost with improved technology 1,6 etc.…”

Section: Introductionmentioning

confidence: 99%

Harris hawks optimization tuned exponential reaching law based integral SMC for pitch control of linear hydraulic actuated wind turbines

Venkaiah,

Sarkar,

Chatterjee

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In the present study 5MW NREL horizontal axis wind turbine (HAWT) has been considered for pitch control to reduce fatigue loads and maintain rated power in region III of operation, that is, above rated wind condition. An electrohydraulic linear actuation system has been considered for blade-pitch revolve-motion of the rotor blade, based upon available wind speed. An augmented state improved exponential reaching law integral sliding mode controller (ASIERL-ISMC) has been designed for the HAWT pitch control application. In contrast to the previously reported improved exponential reaching law based controllers, in our ASIERL-ISMC, all state variables and the sliding variable have been considered together to define an augmented reaching law that can enhance the degree of freedom of the controller. Further, hyperparameters of the proposed ASIERL-ISMC have been optimized using Harris hawks optimization (HHO), to achieve superior control performance. The performances of this proposed HHO-ASIERL-ISMC have been compared with existing dynamic exponential term reaching law integral sliding mode controller (DETRL-ISMC) and improved exponential reaching law integral sliding mode controller (IERL-ISMC). The robustness and sensitivity of the proposed ASIERL-ISMC and HHO-ASIERL-ISMC have also been tested with three different available wind data. The proposed HHO-ASIERL-ISMC has been found to provide the most superior performance, in terms of both blade-pitch angle error (computed using integral absolute error (IAE)) and control energy (CE).

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Section: Introductionmentioning

confidence: 99%

Harris hawks optimization tuned exponential reaching law based integral SMC for pitch control of linear hydraulic actuated wind turbines

Venkaiah,

Sarkar,

Chatterjee

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Experimental Investigation of the Active Flow Control over a Cranked-Delta Wing

Soltani

2024

Journal of Aircraft

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A series of experiments was carried out to investigate the effects of active flow control on the aerodynamic characteristics of a cranked-delta-wing model at a subsonic speed. A dielectric barrier discharge (DBD) plasma actuator was used to improve the aerodynamic performance of the half-span cranked-delta-wing model at various angles of attack. The model had inboard and outboard sweepback angles of 57 and 38 deg, respectively. The surface pressure distribution was obtained at five streamwise stations and at two ray stations. All data were obtained at a constant Reynolds number of [Formula: see text] and at various angles of attack: [Formula: see text]. The results showed that the pulsed DBD plasma actuator improved the aerodynamic performance of the cranked-delta-wing model by preventing flow separation at high angles of attack. The deep stall angle of attack was delayed up to 6 deg, and the poststall suction coefficient was increased approximately 30% at an angle of attack of about [Formula: see text] when the pulsed DBD plasma was applied at its optimum condition ([Formula: see text] and duty [Formula: see text]). It was found that the pulsed plasma actuator suppressed the wake flow in the forward portion of the wing at poststall angles of attack, thus delaying the flow separation. However, the effects of the DBD actuator at very high angles of attack on the flow reattachment process at the rear portion of the wing for the present DBD setting were seen to be minimal. The induced flow by the pulsed DBD plasma actuator influenced the vortex merging phenomena and delayed the onset of the outer vortex burst at prestall angles of attack.

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Impact of dielectric barrier discharge plasma on the wake of a wind turbine blade section oscillating in plunge

Cited by 2 publications

References 30 publications

Harris hawks optimization tuned exponential reaching law based integral SMC for pitch control of linear hydraulic actuated wind turbines

Harris hawks optimization tuned exponential reaching law based integral SMC for pitch control of linear hydraulic actuated wind turbines

Experimental Investigation of the Active Flow Control over a Cranked-Delta Wing

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