基于自适应算法的电抗器有源降噪实验研究  

Experimental Research on Active Noise Reduction of Reactor Based on Adaptive Algorithm

作　　者：沈东明 李清 刘斌 王海玲 SHEN Dong-ming;LI Qing;LIU Bin;WANG Hai-ling(State Grid Shanghai Jinshan Power Supply Company,Shanghai 200540,China)

机构地区：[1]国网上海金山供电公司,上海200540 [2]中国电建集团装备研究院有限公司,上海201316

出　　处：《电力电子技术》2023年第2期37-39,51,共4页Power Electronics

基　　金：国网上海市电力公司科技项目(520932200086)。

摘　　要：电抗器噪声能量主要集中在1/3倍频程100 Hz,具有明显的音调特性。基于此,提出采用基于谐频控制算法的窄带有源噪声控制系统对电抗器对外辐射噪声进行控制,并在实验室内完成了仿真验证。实验结果表明,此方法可实现较好的降噪效果,单次级源100 Hz时可实现12.6 dB降噪量,200 Hz时可实现3.8 dB降噪量;四次级源100 Hz时可以实现22.6 dB的降噪量,200 Hz时可以实现19.3 dB的降噪量。降噪效果的优劣不仅与次级源个数有关,次级源布置方式亦可对降噪效果产生重要影响。The noise energy of reactor is mainly concentrated in 1/3 octave range of 100 Hz,which has obvious tonal characteristics.Based on this,a narrow-band active noise control system based on harmonic control algorithm is proposed to control the external radiation noise of reactor.Experimental results show that this method can achieve a good noise reduction effect,12.6 dB noise reduction at 100 Hz and 3.8 dB noise reduction at 200 Hz at a single secondary source noise reduction of 22.6 dB at 100 Hz and 19.3 dB at 200 Hz can be achieved with four secondary sources.The effect of noise reduction depends not only on the number of secondary sources,but also on the arrangement of secondary sources.

关 键 词：电抗器 谐频控制 有源降噪 自适应算法 

分 类 号：TM46[电气工程—电器]