Wind turbine tower has a very important role in wind turbine system as one of the renewable energy that has been attracting attention worldwide recently. Due to the growth of wind power market, advance and development of offshore wind system and getting huger capacity is inevitable. As a result, the vibration is generated at wind turbine tower by receiving constantly dynamic loads such as wind load and wave load. Among these dynamic loads, the mechanical load caused by the rotation of the blade is able to make relatively periodic load to the wind turbine tower. So natural frequency of the wind turbine tower should be designed to avoid the rotation frequency of the rotor according to the design criteria to avoid resonance. Currently research of the wind turbine tower, the precise research does not be carried out because of simplifying the structure of the other upper and lower. In this study, the effect of blade modeling differences are to be analyzed in natural frequency of wind turbine tower.

1. 서 론
2. 고유진동수 분석
3. 결 론
ACKNOWLEDGEMENT
References

• 이윤우(고려대학교 건축사회환경공학과 석사과정) | Lee, Yun-Woo
• 최준호(고려대학교 건축사회환경공학과 연구교수) | Choi, Jun-Ho
• 강성용(고려대학교 건축사회환경공학과 박사과정) | Kang, Sung-Yong
• 강영종(고려대학교 건축사회환경공학과 교수) | Kang, Young-Jong Corresponding author