Optimizing the design of horizontal-axis small wind turbines: From the laboratory to market

摘要: Abstract The design process for small wind turbines is usually based on standard methods and tools used higher-scale turbines. However, have peculiar features due to their field of application. In this work, a laboratory market approach the blades proposed. choice profiles optimization aerodynamic behavior, compatibly with limitations need simple mechanical structure. blade made glass fiber-reinforced polymer, realized through injection molding. Finite Element Method employed numerical simulation distribution stresses along blade. Static dynamic experimental tests are conducted validate structural model against experiment. A mean difference 3.8% between simulated measured modal frequencies recorded, maximum variation 6.8%, as concerns strain values, obtained. An example proposed, twofold validation conducted: in operation, at critical working conditions, static extreme conditions. conclusion, tunnel reveal that rpm–power curve displays significant rpm intervals which output almost flat, supporting use turbine also considerably turbulent environments.