浮式離岸風機系統運動性能實驗之研究

Experimental Study on the Motion Performance of a Floating Wind Turbine System

葉德生(Te-Sheng Yeh)

指導教授 ： 蔡進發

國立臺灣大學/工學院/工程科學及海洋工程學研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.01287

摘要

本研究目的為建立一1/50縮尺的浮體式風力機模型，並搭配不倒翁式(Spar)浮體平台以及錨鍊系統進行風浪條件下的運動性能研究，求出其三軸旋轉角度以及三軸加速度的反應振幅運算子(Response Amplitude Operator RAO)。本研究採用美國國家再生能源實驗室(National Renewable Energy Laboratory, NREL)的5MW離岸風機作為對象製作風機模型以及Spar型浮體平台，並利用Dominique Roddier等人所提出的方法模擬葉片推力對於風機模型運動的影響。實驗結果顯示，在無風力無錨鍊而只有波浪作用下，風機模型在入射波頻率為1.0Hz時有俯仰方向最大的RAO，其值為1.016deg/m。而在有錨鍊拘束後，風機模型則在入射波頻率為0.6Hz時有俯仰方向最大RAO，無風力只有波浪作用下時其值為0.787deg/m；而有風力且有波浪作用下時其值為1.193deg/m。

關鍵字

浮體式風力機 ； 不倒翁式浮體平台 ； 反應振幅運算子 ； 美國國家再生能源實驗室 ； 運動性能

並列摘要

A 1/50 scale floating wind turbine system is set up to study the motion performance of the wind turbine model including the spar buoy and the mooring system under the coupling of aerodynamic and hydrodynamic loads. The purpose of this system is to find out the response amplitude operator (RAO) of pitching, rolling, yawing and accelerations of the floating wind turbine system. The geometry of the wind turbine and the spar buoy model is based on the 5MW offshore wind turbine of the National Renewable Energy Laboratory (NREL). In order to model the wind effects and the gyroscopic effect, the idea proposed by Dominique Roddier, in which a circular disk is placed in front of the rotating blades on the nacelle, is adopted in this research. The result shows that under the condition without the wind effect and the mooring system, the maximum pitch RAO, which is 1.016deg/m, occurs when the regular head wave frequency is 1.0Hz. The result also shows under the condition of the wind effect and the mooring system, the maximum pitch RAO, which is 1.193deg/m, occurs when the regular head wave frequency is 0.6Hz.

並列關鍵字

Floating wind turbine ； Spar buoy ； Response Amplitude Operator ； National Renewable Energy Laboratory (NREL) ； Motion performance

參考文獻

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