变频器在机床电力拖动中的应用问题

(,071003):,,:;;;:TN773:B:1004-0420(2007)04-0055-03TheapplicationproblemsoffrequencyconverterinmachinetoolelectricaldrivesZHANGHong2lian(NorthChinaElectricPowerUniversity,071003)Abstract:Inthispaper,theperformanceofmachinetoolelectricaldrivesandtherequestoffrequencyconversionregula2tiontomotorandinverterwerediscussed.Theinterferenceandsuppressioninapplicationoffrequencyconverterwereana2lyzed.Keywords:frequencyconverter;electricaldrive;loadcharacter;constantpower0,,,,,,,,,,,,,,,1111,,,,,,:,;,,;,,;;,,,;,,,,,,,,,11211211(fXfN)1,(1),(2)V/f,:fX=fN/3fN,,;V/f,,,fX=fN/380%90%fXfN/3,,fX=fN/10,70%80%,V/f50%,5520071411212(fXfN),,,,1/k1.4f(kf=fX/fN),,fXfNIMX=IMN,2,2,,,,,,,fXfN,,,,,,,3,,,,,,,,,,,:211fminfmax,nlminnlmid(nlmid):nlmidnlminfmaxfmin=f(f)212fminfmax,nlmidnlmax:nlmaxnlmidfmaxfmin=f213,f=nlmaxnlmin=n(n),nlmid=nlmaxf=nlmaxn3311,,,,,,,,65200714,,SPWM,,,,,,,,(PLC),,,,,312,,,,;;,,,,;:a.,,;b.,,LC,,;c.,,;d.,(20cm),;e.,,,,;f.,:;4,,,,,,,,:[1].SPWM[M].:,2002.[2],,.[J].,2006(6).[3],,,.[M].:,2002.[4],,.SPWM[J].,2003(2).:2007-02-08,3,6,8,,5,8,EuPs,,,,75200714