Experimental Analysis of Micro-Wind Turbine Performance: Blade Geometry and Wind Speed Interactions

Micro-wind turbines (MWTs) are increasingly recognized as a viable solution for decentralized renewable energy generation. This is especially true in regions with low to moderate wind speeds. These conditions necessitate experimental investigations into their aerodynamic performance and optimization. This study examines the power generation of MWTs with varying blade radii (200mm, 220mm, 240mm, and 260mm) across wind speeds ranging from 3 to 12 m/s. It also covers different blade configurations, including an analysis of the effect of blade number. The results highlight the non-linear relationship between wind speed and power output, with significant increases observed at higher wind velocities. An experimental test setup was developed to analyze the performance of MWTs under controlled conditions. The setup includes a wind tunnel capable of generating wind speeds. Precision measurement instruments record wind speed, torque, and rotational speed. A modular turbine mount, as well as a modular turbine mount, allows testing of blades with varying radii and configurations. The results demonstrate that power generation increases with wind speed for all tested blade radii and configurations. A pronounced rise occurs at higher wind velocities, confirming a non-linear relationship between wind speed and power output. This highlights the influence of blade radius and number of blades on overall turbine performance.