Analysis on Wind Characteristics of Typhoons by using Floating LiDAR

  • 柯 貝曼

Student thesis: Master's Thesis


Taiwan generally experiences several typhoons every year To ensure the safety of wind turbines used for power generation it is important that the wind conditions in a typical typhoon are known in advance Accordingly the present study uses the data of the floating light detection and ranging (LiDAR) system in Tainan and Miaoli and meteorological stations in Taipei Taichung and Kaohsiung to observe and measure the wind speed and wind direction during Typhoon Soulik in July 2013 Typhoon Trami in August 2013 and Typhoon Matmo in August 2014 The wind data are used to calculate the corresponding turbulence intensity The results show that the maximum wind speeds for typhoons Soulik Trami and Matmo reached 24 28 and 27 m/s respectively as measured from floating LiDAR at a height of 200 m At same time the maximum wind speed announced by Central Weather Bureau (CWB) for typhoons Soulik Trami and Matmo near at the center of typhoons reached 38 30 and 38 m/s respectively The different between wind speed measured by Floating LiDAR and CWB because the different location of typhoon measurement Moreover for a typhoon moving from east to west the wind direction changes from northward to southward as a result of the counterclockwise rotation of the typhoon Furthermore the turbulence intensity on typhoon days was lower than that on normal days Finally it is expected that the measurement methods presented in this study will be of interest to wind turbine designers in Taiwan in particular and around the world in general
Date of Award2015 Jan 28
Original languageEnglish
SupervisorTa-Hui Lin (Supervisor)

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