Utilization of the wind energy has recently become quite popular in Asia-Pacific area. In these countries of Asia-Pacific area have good potential for wind-power development but are also prone to strong typhoons. As the tubular shape of wind turbine tower (WTT) has a large ratio of height (H) to least horizontal dimension (D) that makes it a particularly more slender and wind-sensitive than any other structures. The dynamic problem of WTT was analyzed in this article, including calculation of dynamic characteristics, design methods of fatigue, loading of structure and so on. Finite Element Analysis (FEA) method and Frame Section Method (FSM) are used to compare the natural period and mode shapes that simulate the response of wind turbine tower. On the other hand, typical, damage in Taiwan is blown off the roofing system. Therefore, in this study we evaluated the safety of typhoon-generated missile impact of the turbine blade in Taiwan. As study results, the tip displacement is large than the one of shaft or others component. On the other hand, the fluctuation intensity is equal to 44% by typhoon Jangmi, therefore due to this circumstance the tower is prone to pull out with buckling failure. The results of the analysis of natural periods show that the FSM is closed to the FEA method. However, the along-wind force at Typhoon Jangmi (typhoon speed, U 10=56m/s) is larger than the total wind force, which considered in the along-wind force (basic design wind speed, U10=l1.37m/s) with acrosswind force (lock-in wind speed,Ucr=15.6m/s) of the WTT. Therefore, the typhoon wind speed should be considered in design of the WTTs to compare the total-wind load effect.


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    Title :

    Damage caused by typhoon and design of wind turbine towers


    Contributors:


    Publication date :

    2010


    Size :

    8 Seiten, 16 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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