| 基于SONAH的旋转风轮声源识别实验研究 |
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| 引用本文： | 张翠青,高志鹰,陈永艳,代元军,汪建文,候熠.基于SONAH的旋转风轮声源识别实验研究[J].太阳能学报,2021(1):302-307. |
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| 作者姓名： | 张翠青 高志鹰 陈永艳 代元军 汪建文 候熠 |
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| 作者单位： | 内蒙古工业大学能源与动力工程学院;内蒙古机电职业技术学院电气工程系;风能太阳能利用技术教育部重点实验室;新疆工程学院能源工程学院 |
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| 基金项目： | 国家自然科学基金(51866012);国家自然科学基金(51366010);内蒙古重大自然科学基金(2018ZD08)。 |
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| 摘 要： | 在风洞开口实验段,针对不同风速及不同叶尖速比,应用Brükel&Kj?r公司60通道轮型声阵列及声信号采集系统对直径为1.4 m的S翼型风轮进行声场测试,并采用统计最优近场声全息(SONAH)技术进行旋转风轮低频噪声源识别及频域特征分析。实验结果表明:最大声强度是旋转叶片产生的基频噪声,其对应总声压级随风速增加呈函数f(x)=-0.0092x4+0.297x3-3.7403x2+23.186x+49.274增加,随叶尖速比增加呈函数f(x)=0.4467x4-10.273x3+87.728x2-328.75x+567.23增加;识别的噪声源最大能量中心集中于翼展位置约0.545 m,相对半径r/R=0.778处,且不随风速和尖速比的改变而改变。
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| 关 键 词： | 风力机 噪声控制 声强度 声压级 噪声源 统计最优近场声全息(SONAH) 声源识别 |
EXPERIMENT ON SOUND SOURCE IDENTIFICATION OF ROTATING ROTOR BASED ON SONAH |
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| Zhang Cuiqing,Gao Zhiying,Chen Yongyan,Dai Yuanjun,Wang Jianwen,Hou Yi.EXPERIMENT ON SOUND SOURCE IDENTIFICATION OF ROTATING ROTOR BASED ON SONAH[J].Acta Energiae Solaris Sinica,2021(1):302-307. |
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| Authors: | Zhang Cuiqing Gao Zhiying Chen Yongyan Dai Yuanjun Wang Jianwen Hou Yi |
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| Affiliation: | (School of Energy and Power Engineering,Inner Mongolia University of Technology Huhhot 010051,China;Department of Electrical Engineering,Inner Mongolia Technical College of Mechanics and Electrics,Huhhot 010070,China;Key Laboratory of Wind Energy and Solar Energy Technology,Ministry of Education,Huhhot 010051,China;School of Energy Engineering,Xinjiang Institute of Engineering,Urumqi 830091,China) |
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| Abstract: | In the open section of the wind tunnel,the sound field of S-wing rotating rotor with1.4-meter diameter was measured by BK60-channel type acoustic array and acoustic signals at different wind speed and different tip speed ratio was acquired.Low-frequency sound sources of rotating wind turbine were located using statistically optimal near-field acoustic holography(SONAH).The experimental results showed that the maximum sound intensity is the fundamental frequency noise generated by the rotating blades,and the corresponding sound pressure level increased as a function f(x)=-0.0092 x4+0.297 x3-3.7403 x2+23.186 x+49.274 with the wind speed,and increased as a function f(x)=0.4467 x4-10.273 x3+87.728 x2-328.75 x+567.23 with the tip speed ratio.The center of the identified noise sources is concentrated on the radial position of about 0.545 m,that is r/R=0.778,and did not change with wind speed and tip speed ratio. |
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| Keywords: | wind turbines noise control sound intensity sound pressure level noise source statistically optimal near-field acoustic holography(SONAH) sound source identification |
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