Efficiency enhancement of a hybrid Vertical axis wind turbine by utilizing Optimum parameters

Tripathi, Anshul; Das, Pritam; Aggarwal, Tushar; Sahil,

doi:10.1016/j.matpr.2022.04.406

Cited by 8 publications

(2 citation statements)

References 18 publications

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“…The results revealed that the hybrid turbine gave a higher value of C .1em p of 0.23 as compared to Darrieus (0.21) and Savonius (0.19) turbine. Tripathi et al 169 combined Savonius and Darrieus VAWT to overcome the drawbacks of individual turbines. The numerical analysis was performed at various TSRs with an average wind speed of 9 m/sec.…”

Section: Hybrid Vertical Axis Wind Turbinesmentioning

confidence: 99%

An overview of aerodynamic performance analysis of vertical axis wind turbines

Ahmad

Shahzad

Mumtaz

2022

Energy & Environment

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In this paper, an attempt has been made to highlight major developments of vertical axis wind turbines (VAWTs) in the last few decades. The effects of various design parameters such as airfoil, number of blades, solidity, aspect ratio, blade helicity, and overlap ratio have been critically analyzed. Wind energy is the most promising renewable, cost-effective, efficient, and accessible source for both domestic and commercial applications. Horizontal axis wind turbines are highly developed and are being used for medium-to-large scale power projects. VAWT are considered viable options for urban and semi-urban areas. These turbines have several characteristics, such as omnidirectional, power generation in weak and unstable winds, esthetically sound, safety, and low noise. Darrieus turbines with a fixed blade-type have starting problems at low wind speeds. Savonius turbines have good starting capability; however, their power coefficients are lower than other types of VAWT. To overcome the shortcomings of conventional wind turbines, an innovative engineering solution was sought in the design of hybrid VAWT. The analysis revealed that hybrid wind turbines have addressed the deficiencies to an extent; however, the overall performance is still less than that of conventional wind turbines. Several recommendations have been made based on state-of-the-art information from the perspective of future studies and acceptability. It was concluded that vast opportunities for wind turbine applications are available in urban areas; however, further academic research is required on critical aspects such as self-starting at low wind speeds, efficiency, structural reliability, design improvement for aerodynamic performance, and wind resource assessment.

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Section: Hybrid Vertical Axis Wind Turbinesmentioning

confidence: 99%

An overview of aerodynamic performance analysis of vertical axis wind turbines

Ahmad

Shahzad

Mumtaz

2022

Energy & Environment

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“…However, the wind energy conversion technology is still dominated by the Horizontal Axis Wind Turbine (HAWT) system [5]. Vertical Axis Wind Turbine (VAWT) technology is less attractive to be applied on a large scale because VAWT turbines have several disadvantages, such as efficiency and low tip speed ratio [6].…”

Section: Introductionmentioning

confidence: 99%

Improvement Performance Twisted Savonius Wind Turbine on Hybrid System: Effect of Flat Plate Deflector Installation

Kuncoro¹,

Arifin²,

Budiana³

et al. 2023

IJHT

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The high use of fossil fuels in recent decades has further encouraged the development of renewable energy sources such as solar and wind energy through solar photovoltaic technology and wind turbines. In this case, vertical axis wind turbine (VAWT) has undergone development due to its various characteristics, such as being able to utilize wind from all directions (omnidirectional), its compact shape, and its ability to operate in areas of low wind potential with high turbulence. This study discusses the integration of a twisted Savonius wind turbine with a solar PV system in a hybrid system with a flat plate deflector configuration to improve wind turbine performance. The flat deflector is a flat surface with controllable width and length installed in front of the turbine. Three variables are tested, Ratio X-Axis, Ratio Y-Axis, and Ratio Width Deflector, with three levels for each variable. Using Design of Experiment (DOE) Full Factorial 3 3 allowed for 27 run experiments to capture all possible interactions between variables, which will then be analyzed using Analysis of Variance (ANOVA) to determine the influence of each variable. Based on the results of the research obtained, the three factors significantly influence the performance of wind turbines with each contribution of the x-axis ratio of 2.01%, the y-axis ratio of 5.88%, and the width deflector ratio of 90.05%. It can be concluded that the ratio width deflector is the most influential factor. While the order of effects of each factor can be written as follows ratio width deflector > ratio y axis > ratio x axis, with 5/5 D, 3/5 h, and 6/4 r as the optimum value of each factor with an increase in turbine performance compared to the bare turbine is 10.32%.

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