Abstract
Two horizontal-axis micro wind turbines with six blades were designed based on the Blade Element Momentum Method and their performance was investigated with a wind tunnel. The wind turbine characteristic was influenced by the value of design angle of attack (α). The torque characteristic of the first rotor designed at α=0° was inferior in a low wind velocity state compared with the second rotor designed at α=3°, although, when considering the use in living environment, the characteristic of the former comparatively suited the characteristic of a low rotation type multi-polar generator. In order to predict exact characteristic of a micro wind turbine, the aerodynamic data of the blades in low Reynolds number and large angle of attack are necessary.
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