Synthesis and Optimization of Wind Energy Conversion Devices

Vība, Jānis; Beresnevich, Vitaly; Irbe, Martins

doi:10.5772/intechopen.90819

Cited by 3 publications

(5 citation statements)

References 4 publications

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“…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. In addition, the space around the blade is divided into two zones: one zone is the interaction pressure zone on the front side of the movement, and the other zone is at the rear, or the suction zone [9], [10]. Application of the method makes it possible to study flow -blade interaction without the use of experimental lift and drag coefficients.…”

Section: Materials Model and Methodsmentioning

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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Section: Materials Model and Methodsmentioning

confidence: 99%

Conveyor-Type Small Hydropower Plant for Shallow River Waters

Beresnevich

Cerpinska

Irbe

et al. 2023

ETR

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show abstract

“…The main focus of the present work is to investigate the stationary air flow interaction with rigid body and extend the interaction concept for non-stationary body-air flow interaction without requiring "space-time" programming techniques [5]. In accordance with the concept proposed, a space around rigid body interacting with the air medium is split into several zones (see Figure 1).…”

Section: New Approach To the Air Flow Interaction With A Moving Rigid...mentioning

confidence: 99%

“…where C is a constant determined experimentally or by computer modeling [5]. For subsonic velocity flow, the C value varies within interval 0 < C < 1.…”

Section: Model Of Air Flow Interaction With a Perforated Flat Platementioning

confidence: 99%

“…where C 4 is an air flow and prism interaction constant [5]. In calculations, it is necessary to take into account that Eqs.…”

Section: Model Of Air Flow Interaction With a Quadrangular Convex Prismmentioning

confidence: 99%

“…The interaction between the rotating plate and the air flow under different aerodynamic conditions is analyzed in [3]. The special orientation of a plana-shaped object during movement is realized in [4,5]. The main disadvantage of these devices lies in a large number of blades.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Methods and Devices for Wind Energy Conversion

Vība¹,

Beresnevich²,

Irbe³

2022

Wind Turbines - Advances and Challenges in Design, Manufacture and Operation

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The chapter deals with the analysis and optimization of the operational safety and efficiency of wind energy conversion equipment. The newly proposed method of wind energy conversion involves flat blades or space prisms that perform translation motion due to the interaction with air flow. Air flow interactions with 2D moving prisms (convex, concave) are studied by computer simulation. Optimization of prism shape is made using as criteria maximum of generating force and power. Theoretical results obtained are used in the designing of new devices for energy extraction from airflow. Models of wind energy conversion devices equipped with one vibrating blade are developed (quasi translatory blade’s motion model; model with vibrating blade equipped with crank mechanism). The operation of the system due to the action of air flow is simulated with computer programs. Possibilities to obtain energy with generators of different characteristics, using mechatronic control, have been studied. The effect of wind flow with a constant speed and also with a harmonic or polyharmonic component is considered. Partial parametric optimization of the electromechanical system has been performed. The serviceability and main advantages of the proposed methods and devices are confirmed by experiments with physical models in a wind tunnel.

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

Beresnevich¹,

Cerpinska²,

Vība³

et al. 2022

Vib. proced.

Self Cite

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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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Synthesis and Optimization of Wind Energy Conversion Devices

Cited by 3 publications

References 4 publications

Conveyor-Type Small Hydropower Plant for Shallow River Waters

Conveyor-Type Small Hydropower Plant for Shallow River Waters

Methods and Devices for Wind Energy Conversion

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

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