2020/3/91如何撰写高质量的科技论文阮新波华中科技大学电气与电子工程学院2020/3/92报告内容写科技论文的意义科技论文的基本结构国际期刊评审论文的标准提高论文质量的方法结语2020/3/93写科技论文的意义科技论文的基本结构国际期刊评审论文的标准提高论文质量的方法结语报告内容2020/3/94优秀学生应具备的基本素质善于研究基本素质2020/3/95写论文对研究领域的贡献科技论文是对科学研究中提出的新思想、新方法、新概念等的总结和阐述。发表论文是为了与同行分享所取得的科研成果,是对本领域的贡献。发表论文是获得同行认可、建立学术地位的一种途径。是职称晋升、学生毕业的一个重要指标。2020/3/96撰写科技论文是对研究工作的整理、再认识,可以提高自己的总结能力;有利于弄清某些在研究中似是而非、没有完全明白的问题,是研究过程的重要组成部分;写论文对自己的帮助撰写论文的过程中,甚至可以产生新的灵感。有利于形成良好的思维方式。2020/3/97写科技论文的意义科技论文的基本结构国际期刊评审论文的标准提高论文质量的方法结语报告内容2020/3/98科技论文的主要结构论文题目(PaperTitle)作者(Authors)摘要(Abstract)关键词(IndexTerms)正文(MainBody)结论(Conclusion)致谢(Acknowledgment)参考文献(References)作者简介(BiographyofAuthors)2020/3/99论文题目作者摘要关键词正文结论致谢参考文献作者简介论文题目论文题目要充分、合适、具体地反映论文的主要内容、主要贡献,切忌太长、太大、太空,慎用“新颖的”等词汇,最好不用缩写。MeansofEliminatingElectrolyticCapacitorinAC/DCPowerSuppliesforLEDLightingsVariable-Duty-CycleControltoAchieveHighInputPowerFactorforDCMBoostPFCConverter直流变换器的研究一种新颖的感应电机控制方法AnDEMforBuck-BoostConverter(DEM:DualEdgeModulation)2020/3/910论文题目作者摘要关键词正文结论致谢参考文献作者简介论文署名只有对本文作出贡献的作者才能署名;署名顺序按贡献大小排列,第一作者应为本文的主要贡献者;本研究工作的经费资助者如果对本文没有贡献,不可以作为合作作者署名。但须在致谢中表达谢意。2020/3/911论文题目作者摘要关键词正文结论致谢参考文献作者简介论文摘要摘要主要说明本文的主题、提出的方法和得出的结论。摘要自身应成为一个有价值的文献,特别要包括本文的关键词,让读者在阅读本文前就大致知道本文的主要内容和贡献,而且容易被搜索引擎搜索到。摘要中不能包括公式、参考文献。摘要一般不超过200个单词。2020/3/912Thispaperproposestwomethodsofreducingthestoragecapacitanceintheac/dcpowersuppliesforlightemittingdiode(LED)lighting.Indoingso,filmcapacitorscanbeadoptedinsteadofelectrolyticcapacitorstoachievealongpowersupplies’lifetime.Thevoltagerippleofthestoragecapacitorisintentionallyincreasedtoreducethestoragecapacitance.Themethodofdeterminingthestoragecapacitanceforensuringthattheboostpowerfactorcorrectionconverteroperatesnormallyinthewholeinputvoltagerangeisalsodiscussed.Forthepurposeoffurtherreducingthestoragecapacitance,amethodofinjectingthethirdharmoniccurrentintotheinputcurrentflowisproposed.Whileensuringthattheinputpowerfactorisalwayshigherthan0.9tocomplywithregulationstandardssuchasENERGYSTAR,thestoragecapacitancecanbereducedto65.6%ofthatwithaninputpowerfactorof1.A60-Wexperimentalprototypeisbuilttoverifytheproposedmethods.论文题目作者摘要关键词正文结论致谢参考文献作者简介论文摘要2020/3/913论文题目作者摘要关键词正文结论致谢参考文献作者简介关键词关键词必须表明本文的相关领域、主题。关键词一般为专业词汇和通用的词汇,以便于搜索引擎搜索到。关键词一般为3~5个。Harmoniccurrentinjection,Light-EmittedDiode(LED),powerfactorcorrection(PFC),powersupply,voltageripple.2020/3/914论文题目作者摘要关键词正文结论致谢参考文献作者简介引言明确本文的研究对象及其研究意义(重要性、应用前景)。对相关研究工作进行恰当评述(国内外现状),并指出存在的问题和不足。本文的主要贡献(针对什么问题提出什么方法,结果如何)。简要说明本文的架构。引言是论文最难写的部分。需要有较大的阅读量,尤其是阅读相关领域重要期刊和会议论文。2020/3/915TherapiddevelopmentofLEDoverthelastfewyearshasopenedupnewopportunitiesinthegeneralilluminationmarket,thankstoitsdistinctadvantagessuchashighefficacy,longlifetime,environmentalfriendliness,andsmallsizeoverincandescentandfluorescentlamps[1]–[4].ThepowersupplyforLEDlightingisanac/dcconverter,whichconvertsaregularacvoltagetoalowdcvoltageforanLEDdriver.Theinputpowerfactorisanimportantrequirementoftheac/dcconverter.Itneedstobehigherthan0.9formostcommercialluminaries[5].Thus,theac/dcconvertermusttypicallyhavethefunctionofpowerfactorcorrection(PFC).InaPFCconverter,theinputcurrentisforcedtobeinphasewiththeinputvoltage,leadingtoapulsatinginputpower,whiletheoutputpowerisconstant.Toachievethis,astoragecapacitorwithlargecapacitanceisrequiredforbalancingtheinstantaneouspowerdifference.Duetothehighcapacityrequiredforcapacitance,anelectrolyticcapacitorisoftenusedasthestoragecapacitor.However,itiswellknownthatbecauseofitsliquidelectrolyte,thelifetimeofanelectrolyticcapacitorisquitelimitedwithonlyseveralthousandhoursunderratedoperatingconditions.Evenwithaconservativedesign,thetheoreticallifetimeofelectrolyticcapacitorsisonlyabout3000h(atahighoperatingLED’stemperature)[6].ThisismuchshorterthanthepotentiallifetimeofLEDs(50000h).Thus,theelectrolyticcapacitorisanobstacletotheoveralllong-termreliabilityoftheLEDanditspowersupply.论文题目作者摘要关键词正文结论致谢参考文献作者简介引言LED的优点LED电源需要功率因数校正(PFC)功能PFC变换器需要很大的储能电容储能电容寿命较短,与LED的长寿命不相匹配2020/3/916AreviewofliteratureshowsthatavarietyofLEDpowersuppliesanddriversolutions,whichcanaccuratelycontrolthecurrentoftheLEDwhileachievinganear-unityinputpowerfactor,havebeenproposed[7]–[10].However,anelectrolyticcapacitorisrequiredintheseapplications.PFCconverterscanbeclassifiedintotwotypes:two-stageandsingle-stage.Two-stagePFCconvertersconsistofaPFCstageandadc/dcstage.Theyhavebeenwidelyappliedinadaptorsforlaptopsandsilverbox[11]–[14].Single-stagePFCconvertersintegratethePFCstageandthedc/dcstage,leadingtosimpletopologyandlowcost.Theyaresuitableforlow-powerapplications[15]–[18].Unfortunately,noeffectivemethodhasbeenproposedtosignificantlyreducethestoragecapacitanceinaPFCconvertersuchthatalonglifetimeofaconvertercanbeachieved.论文题目作者摘要关键词正文结论致谢参考文献作者简介引言PFC变换器的研究综述,指出这些方案都不能减小储能电容2020/3/917论文题目作者摘要关键词正文结论致谢参考文献作者简介正文主体部分阐述所提出方法相关理论分析仿真和实验验证II.IncreaseoftheVoltageRippletoReducetheStorageCapacitorA.RelationshipBetweenVoltageRippleandStorageCapacitanceofaTwo-StagePFCConverterB.Maximum,Minimum,andAverageValuesoftheStorageCapacitor’sVo