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

Abstract

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%.

Performance analysis of flat winglet deflector on hybrid solar PV-Wind turbine system: Case study on twisted Savonius turbine

“…In other experimental and simulation studies, the use of a flat plate deflector for testing H-rotor turbines was able to produce wind speeds 25% greater than the incoming wind [22]. Meanwhile, the research carried out Kuncoro et al (2023), analysis of the hybrid twisted Savonius wind turbine and solar PV system shows that the addition of a flat plate deflector is able to increase turbine performance by 10.32%, namely with a Cp value of 0.11678 [23]. In this case, the use of a deflector proved effective in improving both turbine performance and increasing the potential of the wind produced.…”