초록

The rated power and rotor diameters of wind turbines are significantly increasing for maximized energy production and minimized LCoE, especially for offshore wind turbines. Along with this, the loads and weight of rotor blades are inevitably increasing. Therefore, designers are striving to develop light structures by reducing unnecessary materials for the blades. However, designers have to develop a novel design concept to increase the critical buckling load since lightweight designs compromise the critical buckling load, which is frequently the critical design point for ultra-large wind turbine blades. In this paper, the concept of local reinforcement is introduced as a new structural design concept to increase the buckling load. Moreover, its verification procedure and modeling methodology were studied and verified by application to a 3 MW wind turbine blade.

키워드

대형 풍력터빈, 블레이드, 경량화 설계, 보강구조, 설계 방법론, 좌굴 해석

참고문헌(10)open

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