噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2015年
4期
98-100,111
,共4页
声学%风电发电机%结构模态%声模态%声振耦合%阻尼减振
聲學%風電髮電機%結構模態%聲模態%聲振耦閤%阻尼減振
성학%풍전발전궤%결구모태%성모태%성진우합%조니감진
acoustics%wind generator%structure modal%acoustic modal%acoustic-vibration coupling%damping vibration attenuation
通过实验测试和理论计算，对兆瓦级风电直驱型发电机结构音调噪声的产生机理、声源的位置和传递路径进行分析。结合发电机的实际结构，设计减振降噪方案，研发相应的多层复合阻尼材料和吸声材料，并通过一台实际机型，开展噪声控制方案的实施和评价，相比原发电机，其主要音调噪声从96 dB(A)降低到83.4 dB(A)，从而有效提升该机型海外市场的竞争力。
通過實驗測試和理論計算，對兆瓦級風電直驅型髮電機結構音調譟聲的產生機理、聲源的位置和傳遞路徑進行分析。結閤髮電機的實際結構，設計減振降譟方案，研髮相應的多層複閤阻尼材料和吸聲材料，併通過一檯實際機型，開展譟聲控製方案的實施和評價，相比原髮電機，其主要音調譟聲從96 dB(A)降低到83.4 dB(A)，從而有效提升該機型海外市場的競爭力。
통과실험측시화이론계산，대조와급풍전직구형발전궤결구음조조성적산생궤리、성원적위치화전체로경진행분석。결합발전궤적실제결구，설계감진강조방안，연발상응적다층복합조니재료화흡성재료，병통과일태실제궤형，개전조성공제방안적실시화평개，상비원발전궤，기주요음조조성종96 dB(A)강저도83.4 dB(A)，종이유효제승해궤형해외시장적경쟁력。
The structure-borne noise generation mechanism, the sound source location, spectrum and transfer path of a type of megawatt level wind-power direct-drive generators were tested and theoretically analyzed. According to the actual structure of the generator, a vibration and noise reduction strategy was designed, and the multi-layered composite damping material and sound absorption material were developed. The strategy was implemented with a generator and its noise control effect was evaluated. The results show that compared with the original generator, the main tonal noise is reduced from 96 dB (A) to 83.4 dB(A), which effectively improves the windmill competitiveness in overseas markets.
