Comparison between the different types of rotor blades for vertical axis wind turbine

Abstract

This research centres its attention on wind energy as a pivotal component in the global pursuit of renewable energy sources. It delves into the intricate domain of rotor designs prototypes, vital for capturing wind's kinetic energy and converting it into usable power for Vertical Axis Wind Turbines (VAWTs). The study thoroughly investigates rotor performance across a spectrum of wind speeds and scenarios, revealing the interplay between stiffness, flexibility, and adaptability. The primary objective of this research is to bridge the gap in knowledge by examining how rotors with unconventional materials perform.

It meticulously examines rotational speeds, Tip Speed Ratio, and Reynolds Number under varying wind velocities to evaluate the effectiveness of three rotor variations: Rigid, Flexible, and Semi-Flexible. The findings reveal distinctive performance characteristics for each rotor design. Notably, the Flexible rotor excels at lower wind speeds but encounters constraints at higher speeds, while the Semi-Flexible rotor demonstrates impressive stability across diverse wind conditions. Beyond technical insights, the study promotes advanced rotor designs, and consideration of economic and environmental impacts. It offers study’s insights underscore the complexities of rigidity, flexibility and adaptability in rotor designs and offer significant implications for wind energy technology advancement. The research recommends exploring enhanced rotor designs, employing unconventional materials, geometrical innovations, and structural enhancements. Moreover, the study avenues for the further research, emphasizing aerodynamic characteristics, structural behaviour, and potential design optimization to elevate the efficiency and effectiveness of VAWTs in harnessing renewable energy.