变压器的噪声及其合理控制

(,512005):,,,.:;;;;:TM401.2:A:1007-5348(2004)09-0045-03,,.,,,.,,.1,.(GB3100.7-93),p()I()W().I=p2/z(z)()L=10lg(I1/I0)(I1,I0)L=10lg(p1/p0)2=20lg(p1/p0).,.,I0p0I0=10-12W/m,p0=210-5N/m2,1dB,.1.1/m/dB160687090231101151,7090dB,6dB,,.2().2.12.1.1:,:2004-05-28:(1969-),,,,.20049()Sep.2004259JournalofShaoguanUniversity(NaturalScience)Vol.25No.9,,.,.,,.,LL,=L/L,:(1):,97%,.(2):,,.,,,,,.(3):2%3%.,6%6.5%,.,,,.,6.5%,,.(4):,.,;,;.,.2.1.2:,,,.,,,,,,,.,1.,34dB.2.1.3:(1).(0.080.12),.,,,.,,,,.5dB.2.2,:(1);(2),,.33.1,:46()2004(1).(DQ147-30,DQ133-30)(Hi-B)(DQ133G-30,DQ-122G-30).(2),.CNC,,..,;,,.(3).,5060,.(4).,,,,.,50100m.(5)(,).(6)..3.2.(1),.(2),.,.:.,(100Hz);,100400Hz;;,.1020dB,.4,,.,..,,,,.:[1].[J],(),1995(2):19-21.[2].[J],,1995(12):27-37.TransformerNoiseandItsReasonablePreventionLINMing2fang(LogisticsDepartment,ShaoguanUniversity,Shaoguan512005,Guangdong,China)Abstract:Thispaperbrieflyintroducesthenoiselimitationstandard.Itanalyzesthecausesofnoisefromtheaspectsofthehysteresisflexing,thestructuralform,assembletechniqueofcoreandthecoolingdeviceoftransformeraswell.Baseonthisanalysis,thispaperbringsforwardthemainmeasurestoreducethenoiseproducesbytransformer.Keywords:transformer;core;coolingdevice;noise;control(:)9:47