극소형 풍력발전기 블레이드의 형상변화에 의한 성능향상 연구

다국어 초록 (Multilingual Abstract)

With the depletion of existing energy resources and the issue of environmental pollution, renewable energy is being watched for using fossil fuels or converting renewable energy. At the same time, energy harvesting is in the spotlight, converting small amounts of waste energy into electrical energy for sensors that require small power consumption. Wind turbine is expected to play an important role in supplying small electric power because there is no environmental pollution and small winds can be used. Although the development of large scale wind turbine (rotor diameter of 10 m, generation of 25 kW or more) is being pursued politically, there are not many studies on super small wind turbine for small wind speeds (within 3 m/s). The researchers have studied the shape of the blades to increase the efficiency of small wind turbines that convert small winds below 3 m/s into electrical energy. In this study, we aimed to improve the performance of miniature wind turbine and miniaturize the blade radius. The shape of the blade for the research was optimized by curving the middle part of the blade and the angle and curved position. The designed blades were printed by a 3D printer and tested at the wind speed of 3 m/s. CFD analysis was performed to investigate aerodynamic characteristics. Finally, the output voltage was 133% higher than that of the straight blade, and it succeeded in miniaturizing it to 35 mm in diameter. It is expected that the result of blade shape revealed in this study will be used as basic data for the development of super small wind turbine.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 본론
• 3. 결과
• 4. 결론
• 참고문헌