臺灣能源期刊發行
- 創刊日期：
102年11月30日
- 發行所：
經濟部能源署
- 發行人：
游振偉
- 地址：
台北市復興北路2號13樓
- 電話：
02-2772-1370
- 執行單位：
財團法人工業技術研究院
- 地址：
新竹縣竹東鎮中興路四段195號26館
- 服務專線：
03-5916006
- 服務信箱：
- 總編輯：
王漢英胡均立
- 顧問：
王運銘童遷祥楊日昌
- 執行主編：
劉子衙陳志臣
- 編輯委員：
方良吉王錫福李堅明李叢禎林師模馬鴻文陳介力陳希立廖芳玲廖肇寧劉文獻蕭志同顧洋(依筆畫順序排列)
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臺灣能源期刊論文全文
臺灣能源期刊第6卷第2期內容
出刊日期：June, 2019
- 題目
- 風力發電機之槳距控制對功率與噪音影響評估—以核研所25 kW水平軸風力機為例
- Title
- Impact Assessment of Pitch Control on Wind Turbine Power and Noise : A Case Study of INER 25 kW Wind Turbine
- 作者
- 林彥廷
- Authors
- Yan-Ting Lin
- 摘要
- 本論文實驗量測與分析核能研究所25kW水平軸風力發電機之發電功率與運轉噪音。量測方法依照IEC61400-11量測要求，並利用CESVA公司之SC310手持式聲波噪音量測儀記錄25 kW風力機之1/3八音度聲音特性與每秒平均聲噪。量測方式亦採用全頻噪音記錄並透過FFT (Fast Fourier Transform)轉換解析地面聲噪。研究結果顯示葉片槳距角調整為80度之待機位置時，平均風速由2.5 m/s增加8.5 m/s將造成背景全頻噪音由49 dB(A)提升到57 dB(A)。而採用最低葉片槳距角5度運轉時，高速風況下地面量測之氣動力噪音則與待機狀態相似。而在高風速下低頻噪音於槳距角80度與5度分別為44.48 dB(A)與51.78 dB(A)。FFT頻譜圖結果呈現槳距角變化條件下聲頻約在180 Hz、320 Hz、560 Hz與580 Hz有明顯差異。在發電功率方面，在相同的風速下較低的槳距角呈現出較高的轉速與發電功率，槳距角5度於風速9.24 m/s之最高運轉效率與發電功率分別為28.81%與17 kW，啟動槳距角45度於風速7.18 m/s之最高運轉功率以及發電功率則分別為2.08%與580 W。槳距角5度約比槳距角15度所產生的發電功率增加1.5倍，但所產生的氣動力噪音呈現相近數值。
- 關鍵字
- 25 kW水平軸風力機、氣動力噪音、槳距角控制、發電功率
- Abatract
- This paper experimentally measures and analyzes the power generation and operating noise of a 25 kW horizontal axis wind turbine. The measurement method is based on the IEC61400-11 measurement standard, and uses CESVA's SC310 handheld acoustic noise meter to record the 1/3 octave sound characteristics and average sound noise per second of the 25 kW wind turbine. The measurement method also uses full-frequency noise recording and analyzes ground acoustic noise through FFT conversion. The results show that when the blade pitch angle is adjusted to a standby position of 80 degrees, the average wind speed is increased by 8.5 m/s from 2.5 m/s, which will increase the background full-frequency noise from 49 dB(A) to 57 dB(A). When operating at the lowest blade pitch angle of 5 degrees, the aerodynamic noise measured by the ground under high-speed wind conditions is slightly increased by 1 dB(A) compared with the noise of the standby state. At high wind speeds, the low frequency noise is 44.48 dB(A) and 51.78 dB(A) at the pitch angles of 80 degrees and 5 degrees, respectively. The FFT spectrogram results show that the acoustic frequency is significantly different at 180 Hz, 320 Hz, 560 Hz and 580 Hz under the variation of the pitch angle. In terms of power generation, the lower pitch angle exhibits higher rotational speed and power generation at the same wind speed. The maximum operating efficiency and power generation at a pitch angle of 5 degrees at a wind speed of 9.24 m/s are 28.81% and 17 kW, respectively. At a pitch angle of 45 degrees, the maximum operating efficiency and power generation at a wind speed of 7.18 m/s are 2.08% and 580 W, respectively. The power generation power at a pitch angle of 5 degrees is about 1.5 times higher than the power generated by a pitch angle of 15 degrees, but the generated aerodynamic noise exhibits similar values.
- Keywords
- 25 kW horizontal axis wind turbine, aerodynamic noise, pitch angle control, power generation.