基于DSP的高频链逆变器的研究

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1、西南交通大学硕士学位论文基于DSP的高频链逆变器的研究姓名：胡超申请学位级别：硕士专业：检测技术与自动化装置指导教师：郭育华20070501西南交通大学研究生硕士学位论文第1

2、页AbstractNowadays，highpowerdensityandhighefficiencyhavealwaysbeenthegoaltopursueinthefieldofmodernelectricpowerconverters．High-FrequencyLinktechnologyisthebasictechnol

3、ogyforthelightandminitypedevelopmentoftheinverter．ThispaperfocusesonaHigh—FrequencyIjnkInverterwithFull-Bridgelnverter-eycloconverterasitsmaincircuittopologyandDSPasitscorecontroller．Thefundamentalprinciplesofthesinusoidalpulsewidthphasemodulationcontrols

4、trategyandthecontrolmethodisdescribedindetail．Thepaperelaboratesthehardwaredesignandillustratesthemainsoftwarealgorithmfortheinverter．Thepaperintroducestheresearchworkthathasbeendonehomeandabroad∞theHigh·FrequencyLinkinverterandtheprospectofapplication．Ba

5、sedOiltheComparewiththerepresentativetopology,themainschemeoftheinverterdiscussedinthepaperisDC(10wvoltage)／AC(10wvoltagehighfrequencySPWPMpulse)／AC(highvoltageandlowfrequencysinewave)．theschemeenablestheinvertertohaveonlytwolevelsofpowerconversionandoffe

6、rsasimplestructureandfewharmoniouswavesintheoutput．Inthecontrolcircuitunit。T1IeTMS320U陀4I)7isused勰themaincontrolunit．theSPWPM(sinusoidalpulsewidthphasemodulation)controlstrategyandtheoutputoftheSPWPMwavegeneratedbyitscompareunitisdiscussed．Thedrivesignalo

7、ftheMOSFETinthecycloconverteristhelogiccircuitcombinationoftheoutputvoltagesignal，theoutputcurrentsignalandtherectangularwavewiththesamefrequencyasthecurrierwave。Itmakethecycloconvertercallworkattheloworhighfrequencyaccordingtotheloadcharacter．Toachieveag

8、oodperformancebothstaticallyanddynamically,closedloopcontrolmethodhastobeapplied．ThepaperUSeSclose—loopcontrolmethodbasedoninstantaneousvoltagefeedback,andenablestheinvertertoproducesteadysinusoidalwavesbythedigitalPIDadjusterdesigned．Theprotectioncircuit

9、isalsomentioned．Intheend，theemulationresultsoftheHigll-FrequencyLinkInverterarealsopresentedanddiscussedinthepaper．Keywords：Higll—Frequency·unl【，SPWPM，DSP,DigitalPIDadjuster西南交通大学研究生硕士学位论文第1页1．1课题的背景第1章绪论随着石油、煤和天然气等