The control of blades orientation to air flow in wind energetic device

Vība, Jānis; Beresnevich, Vitaly; Irbe, Martins; Dobelis, Jānis

doi:10.1016/j.egypro.2017.08.317

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…3) The interaction of air flow with a rotating flat blade is not considered here, because such interaction has been studied earlier (i.e., in [24]) as well in the analysis of windmills operation.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Dynamics analysis and structural synthesis of wind energy production device with closed loop conveyor

Beresnevich¹,

Cerpinska²,

Vība³

et al. 2022

Vib. proced.

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This paper deals with a dual design device for wind energy production, in which the movement of the blade consists of several stages, that is, two stages of rotation about two fixed axes and two stages of the blades straight translation movement. The proposed design offers a closed-shaped flattened conveyor equipped with several identical flat-shaped blades. The blades are mounted on a conveyor belt and have an opportunity to move together with the belt in one straight line direction. Therefore, air flow kinetic energy is transformed into translation motion of flat blades. The conveyor system has a built-in energy generator. To analyse blade interaction with air flow, a superposition principle is applied, in which the fast chaotic motion of air particles (Brownian motion) is separated from the slow flow motion with the given average velocity. On the base of such separation, a differential equation of motion for the entire conveyor system with one degree of freedom is obtained. Dynamics of the system due to the action of air flow is simulated with computer program Mathcad. Optimization of system parameters is performed, using a generated power as criterion. In addition, motion control at changeable airflow is optimized by selecting the blade orientation and corresponding adjustment of generator.

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Section: Resultsmentioning

confidence: 99%

“…Investigation of rotating flat blade interaction with air flow is performed in [23]. New methods and devices for wind energy conversion with special regulation of blade's turning angle are proposed in [24], [25]. The main disadvantage of these devices lies in the large number of blades.…”

Section: Introductionmentioning

confidence: 99%

Dynamics analysis and structural synthesis of wind energy production device with closed loop conveyor

Beresnevich¹,

Cerpinska²,

Vība³

et al. 2022

Vib. proced.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The proposed model of wind energy conversion generator (Fig. 1) has some advantages over the known devices [1][2][3][4][5][6] due to its specific design. The proposed model has one flat blade 1, so wind flow twirls between the blades are impossible in principle, but such twirls reduce the efficiency and safety of the known equipment.…”

Section: Resultsmentioning

confidence: 99%

Wind energy conversion generator

Beresnevich

Vutukuru

Irbe

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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The aim of the paper is to analyze and optimize the operational safety and efficiency of wind energy conversion equipment. A wind energy conversion device equipped with one oscillating flat blade has been developed and studied. In this device, lateral surface of the blade is firmly attached to the crank, which is kinematically connected with the generator's slider moving inside the electric coil. As a result, electrical energy is produced in the linear generator. The considered electromechanical device is described by the second order differential equation. In this equation, the interaction of wind flow and relative motion of the blade is described by the approximate relationships of classical mechanics. Operation of the system due to the action of air flow is simulated with computer program Mathcad. Possibilities to obtain energy with generators of different characteristics, the operation of which is regulated by mechatronic control, have been studied. The effect of a constant wind flow with a constant speed and also with a harmonic or poly harmonic component is considered. Partial parametric optimization of the electromechanical system has been performed. Graphs for the change of plate phase coordinates, as well as for the change of the obtained power are presented. The results obtained in the paper can be used in the study of similar fluid flow interactions at damping or energy extraction.

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“…Other specific feature of existing hydropower plants lies in the practical use of turbines with rotating blades [5] - [7]. To increase generated power, such blades are often made with large radial dimensions.…”

Section: Introductionmentioning

confidence: 99%

Conveyor-Type Small Hydropower Plant for Shallow River Waters

Beresnevich

Cerpinska

Irbe

et al. 2023

ETR

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This paper deals with the development of a small conveyor-type hydropower plant intended for operation in shallow river waters without construction of a dam. The proposed design offers a closed-shaped flattened conveyor equipped with flat-shaped blades. The conveyor is oriented perpendicular to the fluid flow. Several identical flat blades interacting with fluid flow are mounted on conveyor belt and move together with the belt in one straight line direction. Then after turning in the reversing mechanism, blades move in the opposite direction. The conveyor system has a built-in energy generator which drive shaft is connected with one of the reversing ends of the plant. Conveyor belt system dynamics analysis is performed on the base of equivalent model with one degree of freedom. The interaction of a moving conveyor flat blade in translation motion with fluid flow is studied by computer simulation with program Mathcad using a superposition principle. In accordance with this approach, a fast-chaotic motion of fluid particles (Brownian motion) is separated from the slow-directed flow motion, with the given average velocity. Optimization of system parameters (blade orientation angle to fluid flow, interaction constants of the braking generator) is performed, using a generated power as criterion. Simulation results confirm the serviceability and operational efficiency of the proposed hydropower plant in shallow river waters.

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The control of blades orientation to air flow in wind energetic device

Cited by 7 publications

References 2 publications

Dynamics analysis and structural synthesis of wind energy production device with closed loop conveyor

Dynamics analysis and structural synthesis of wind energy production device with closed loop conveyor

Wind energy conversion generator

Conveyor-Type Small Hydropower Plant for Shallow River Waters

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