해상풍력발전용 하이브리드형 타워의 고유진동해석
A Study of Natural Frequency on Offshore Wind Turbine Hybrid Type Tower
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초록
풍력 발전 분야는 앞으로 에너지 대란에 있어서 이를 해결해 줄 중요한 돌파구 중의 하나이다. 지금까지 연구 되어온 풍력발전기에 Tower에 대한 분야는 정적인 해석에 그치고 있다. 본 연구에서는 하이브리드형 타워의 형태를 정하고 이것에 대한 특성을 파악하며 그 경향을 찾아내 이를 실제 설계 및 제작에 적용하고자 하였다. 본 논문에서는 타워의 모드별 고유진동수를 파악하고 이것에 대한 특성을 연구하였으며 작동 중 발생하는 하중과 해상 설치 시 작용하는 부가질량의 영향에 대하여 고려하여 그 특성을 파악하였고 2MW와 3.5MW 타워의 특성을 비교하여 그 경향을 예측 할 수 있었다.
Abstract
Wind power generation is one of the promising gateways that will solve the energy crisis in the future. The wind power generator studied so far is limited to static interpretation in the areas related to tower. This study broadly sets the form of tower as hybrid type tower, identifies the characteristics of each and aims to find and apply their trend to in actual design and manufacturing process. This paper identified the resonance frequency of tower at each mode and studied their features. Furthermore, this study identified the characteristics of the load that occurs in operation and the effect of additional mass incurring when installed in sea, and it compared the two types of 2MW or 3.5MW tower and was able to predict their trend.
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