三相桥式全控整流触发装置的设计

《三相桥式全控整流触发装置的设计》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、华中科技大学硕士学位论文AbstractThenewTokamaksuppliesthecoilswithalotofthyristorbasedconverters.Thetriggersystems,asthecorecomponentsofconverters,directlyaffecttheperformanceofconverters.ThetriggersmadeinU.S.usedinJ-TEXTTokamakworkwellandmeetthecontrolrequirementsintheelectromagneticenvironmentofJ-TEXTToka

2、mak.Yethighprices,longprocurementperiodandinconvenientmaintenancecauseseveralproblemsduringuse.Therefore,thispaperexpandstheresearchoftriggersaccordingtotheneedofJ-TEXTTokamakpowersupply.Thispaperfirstlydesignsthehardwareandsoftwareofthetriggersystemaccordingtotheinputwithafixedfrequency.Thehar

3、dwareconsistsoftheconversioncircuitofvoltagewithvoltageattenuation,low-passfilter,voltageselectionandover-zerocomparing,thedigital-to-analogconversioncircuit,thethyristordrivecircuitwithDarlingtontransistorandpulsetransformerandFPGA(FieldProgrammableGateArray)systemcircuit.Thesoftwareincludesth

4、ephasesequencechecking,thevoltage-absentprotection,thedigital-to-analogconversionprogram,thealldigitalphase-lockedloop(ADPLL)andthepulsegeneratormodule.Thenitdesignsthehardwareandsoftwareofthetriggersystemaccordingtotheoutputvoltageofthepulsedgenerator.Thehardwareofthissystemconsistsoftheconver

5、sioncircuitofvoltagewithvoltageattenuationandelectricconversion,theconversioncircuitofanglecontrolsignalandtheDSP(DigitalSignalProcessor)systemcircuit.Thethyristordrivecircuitinthetriggersystemfortheinputwithafixedfrequencycanbestillusedinthistrigger.Thesoftwareinthistriggeralsoincludesthephase

6、sequencechecking,thevoltage-absentprotection,thedigital-to-analogconversionprogramandthepulsegeneratormodule.Andthephasetrackingarithmeticisthethree-phasephase-lockedloop.Thealldigitalphase-lockedloopandthethree-phasephase-lockedloopareprovedtobestableandfeasiblebytheoreticalcalculationsandsimu

7、lationanalysisaskeyalgorithm.Inordertoverifythefunctionalityofthetriggersystems,testsaboutphasecheckingcapability,phasesequencechecking,linearityofphasecontrolandoutputvoltageareII万方数据华中科技大学硕士学位论文madeonaprototype.Thetestresultsind