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1、機床與液壓Jun．2014HydromechatronicsEngineeringVo1．42No．12DOI：10．3969／j．issn．1001-3881．2014．12．016Phase-LocktechnologyoffulldigitalUPSbasedonDSPYa-jingZHANG，Guo—xuZHANGDepartmentofInformationEngineering，TangshanCollege，Tangshan063000，ChinaAbstract：Inordertoavoi
2、dabigimpactonloadwhentheUPSinverterisswitching，theoutputvoltageofUPSinvertermustbeconsistentwiththegridvoltageinfrequencyandphasedomain．Fastandreliablesoftwarephase—lockedtrackingtechnologycanaccuratelyprovidethestandardsinusoidalvoltageforthedigitalinver
3、terwiththesamefrequencyandphaseasthoseofthegridvoltage．Thispapermainlydiscussesthephase—lockedtechnologyoffuldigitalUPSbasedonTM$320LF2407．Keywords：DSP，UPS，Phase-lockinafuUdigitalUPSbasedonTMS320LF2407．1．IntroductionThephase·-lockedtechnologyplaysaveryimp
4、or·-rantroleinmanyfieldssuchascommunication，ra-UPS(uninterruptedpowersupply)canprovidedar，navigation，spacetechnologyandcomputer．reliableandstablepowerforloadnomatterwhateverTherearetwopartsinphase—lockedtechnology，i．thepowergridisnormalorabnorma1．UPSisuse
5、de．，analoganddigita1．Therearesomedefectsforinforkeyloadssuchascomputerrooms，hospital，andanalogphase—lockedtechnologyinmanyrespectsthatsoon[1-3]．TheseworkplacesneedUPStoprovideincludesreliability，stabilityandintegration；digitaltheimportantdeviceswhenthepow
6、erbreakdown．phase—lockedtechnologyincludestwoparts，oneisThetraditionalon--lineUPSisverycomplexandex--digitallogicphase-lockedwhichthatismadeofdigitalpensivesince，becauseofmanypowerpartsandana—logicdevice．theotherissoftwarephase—lockedlogcontrollersareinth
7、eUPS．Therefore，peoplewhichisthatbasedonDSP[8]．Digitallogicphase—havepaidmoreandmoreattentionsonthestudyoflockedcircuithasveonlytwostatues：rum—onandfulldigitalUPS，whichismorereliableandmorecut—of．Ascomparedwithanalogphase—lockedtech-suitableforthedevelopme
8、ntofmodemscienceandnology，digitallogicphase-lockedtechnologyhasvetechnology[4]．Digitalcontroltechnologyissimplerlotsofadvantagesintermsofnoiseimmunity，inte—andmorestablethananalogcontroltechnology．Withgratedleveland
