华中科技大学，智能交通灯信号控制器的设计,数字电路课程设计报告

系统的介绍了包络分析在实际中的应用，介绍了matlab进行包络分析的方法，并附有源程序供科研人员学习这是一个分式规划问题。若令则()可化为等价的线性规划问题:线性规划()的解和称为的最佳权向量,它们是使的效率值达到最大值的权向量。注意:作为线性规划的解,和不是唯一的义()若线性规划()的解满足:,则称为弱有效的;()若线性规划()的解中存在解并且则称为有效的。为了便于检验的有效性,一般考虑()的对偶模型的等式形式(带有松弛变量目具有非阿基米德无穷小)∑∑其中是项输入的松弛变量是项输出的松弛变量;是个的组合系数;;是个很小的止数(般取)。定理设线性规划(的最优解为则()若为弱有效()的;()若且则为有效()的程序由上一节知,要计算一个的相对效率值并讨论其(弱)有效性,须解一个线性规划若要计算所有的相对效率值,则须解个线性规划,其计算量比较大,一般须利用计算机进行计算。我们利用数学软件编写了解模型()和(的程序,比较方便地解决了的计算量大和计算复杂的问题是由公司用语言编写的著名的工程数学应用软件。它自牛推向市场以来,历经十几年的发展和竞争,现已成为国际认可的最优化的科技应用软件。目前,口经成为世界上诸多科技领域的基本应用软件。在国内、外的很多高等院校和科研机构已经十分普及。熟练地运用已成为晑校师生及科研人员的基本技能强大的矩阵运算能力和方便、直观的编程功能是我们选择它作为编写应用程序的原因。诚然,或是解线性规划问题的专业软件,但它们缺乏方便的编程功能和矩阵输入功能,在解一系列线性规划时,它们不如方便。此外,它们的普及程度远不如因此,我们认为是编写应用程序的最佳软件之一。所解的线性规划的标准形式是板小化问题:其中,是变量,是目标函数的系数向量,是不等式约枣的系数矩阵,是等式约束的系数矩阵,和分别是变量的下界和上界解线性规划()的语句为如果要解极大化问题,只须解极小化问题卜面,我们给出模型和(的程序。程序模型的程序)用户输入多指标输入矩阵用户输入多指标输出矩阵解线性规划,得的最佳权向量求出的相对效率值输出最佳权向量输出相对效率值输出投入权向量输出产出权向量程序模型(的程序)用户输入多指标输入矩阵用户输入多指标输出矩阵定义非阿基米德无穷小解线性规划,得的最佳权向量输出最佳权向量输出输出输出输出以上两个程序十分便于使用。用户只须输入多指标输入矩阵和输出矩阵,目可得到所需的结果。程序的应用设有某大学的同类型的五个系在一学年内的投入和产出的数据如下投教职工(人)教职工工资(万元)入运转经费(万元)毕业的本科生:(人)毕业的研究生(人)出发表的论文(篇)完成的科研项目(项)其中,运转经费指一学年內维持该系正常运转的各和费用,如行政小公费、图书资料费、差旅费等等。由程序,得到各系的相对效率值:以及各项投入和产出的权向量中定义,和至少是弱有效的和是非弱有效的。为了确认和的有效性并分析和非有效的原因,须利用模型(。由程序,得本问题的解:由以上解可看出:和的解中且松弛变量故由定理知,这几个系是相对有效的。和的非有效性也可以在以上解中看得一清二楚。以为例,根据有效性的经济意义,在不减少各项输出的前提下,构造一个新的投入的投入按比例减少到原投入的)倍,)并且(由非零的松弛变量可知)还可以进一步减少教职工工资万元、减少运转费用万元、多培养本科生人多完成项科研项目。对的非有效性可作类似的经济解释。结束语本文利用数学软件编写了便于使用的的计算程序,使计算量大和计算复杂的问题得到较好的解决。本文只对的模型进行了讨论。对于的另一个重要模型一模型,只须在模型(。中增加约東条件∑A,程序作相应的修攻即可。本文的程序为的理论研究和实际应用提供了方便、快捷的计算工具。参考文献:魏权龄评价相对有效性的方法北京:中国人民大学出版社盛旧瀚等里论、方法与应用北京:科学出版社,许波,刘征工程数学应用北京:清华大学出版社,

水利 水文 水库调度 遗传算法 VB程序

wifi 802.11n 协议标准Contents2. Normative references ........................................................................................................................... 13. Definitions ...........................................................................................................EEE Std802.11n"-2009(Amendment to ieEE Std 802.11-2007as amended by ieee std 802. 11k-2008EEE Std80211r-2008, EE Std802.11y-2008,and IEEE Std 802. 11w-2009)EEE Standard forInformation technology-Telecommunications and informationexchange between systems-Local and metropolitan area networks-Specific requirementsPart 11: Wireless LAN Medium Access Control (MAC)and Physical Layer(PHY SpecificationsAmendment 5: Enhancements for HigherThroughputSponsorLANIMAN Standards committeeof theIEEE Computer SocietyApproved 11 September 2009IEEE-SA Standards boardAbstract: This amendment defines modifications to both the IEEE 802 1 1 physical layer(PHY)andthe IEEE 802 11 medium access control (MAC) sublayer so that modes of operation can be enabledthat are capable of much higher throughputs, with a maximum throughput of at least 100 Mb/s, asmeasured at the Mac data service access point (SAP)Keywords: high throughput, MAC, medium access control, MIMO, MIMO-OFDM, multiple inputmultiple output, PHY, physical layer, radio, wireless local area network, WLANThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue New york NY 10016-5997 USACopyright@ 2009 by the Institute of Electrical and Electronics Engineers, IncAll rights reserved. Published 30 October 2009. Printed in the United States of AmericaIEEE is a registered trademark in the U.S. Patent Trademark Office, owned by the Institute of Electrical and ElectronicsEngineers, IncorporatedPDFSBN978-0-7381-60467STD95961Print:|SBN9780-7381-6047-4STDPD95961No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the priorwritten permission of the publisherIEEE Standards documents are developed within the ieee Societies and the standards Coordinating Committees ofthe IEee Standards Association (IEEE-SA) Standards Board. The ieee develops its standards through a consensusdevelopment process, approved by the American National Standards Institute, which brings together volunteersrepresenting varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of theInstitute and serve without compensation. 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At lectures, symposia, seminars, or educational courses, anindividual presenting information on IEEE standards shall make it clear that his or her views should be considered thepersonal views of that individual rather than the formal position, explanation, or interpretation of the IeEeComments for revision of IEEE Standards are welcome from any interested party, regardless of membership affiliationwith IEEE. Suggestions for changes in documents should be in the form of a proposed change of text, together withappropriate supporting comments. Recommendations to change the status of a stabilized standard should include atonale as to why a revision or withdrawal is required. Comments on standards and requests for interpretations shouldbe submitted to the following addressSecretary, IEEE-SA Standards board445 Hoes lanePiscataway, NJ 08854USAAuthorization to photocopy portions of any individual standard for internal or personal use is granted by The Instituteof Electrical and Electronics Engineers, Inc, provided that the appropriate fee is paid to Copyright Clearance CenterTo arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 RosewoodDrive, Danvers, MA 01923 USA; +1978750 8400 PerImission lo photocopy portions of any individual standard foreducational classroom use can also be obtained through the Copyright Clearance CenterIntroductionThis introduction is not part of IEee Std 802. 11n-2009, IEEE Standard for Information technology-Telecommunications and information exchange between systems--Local and metropolitan networks--Specifirequirements-Part 11: Wireless LAN Medium Access Control(MAC) and Physical Layer(PHY) SpecificationsAmendment 5: Enhancements for Higher ThroughputThis amendment specifies enhancements to IEEE 802. 11 physical layer(PHY)and medium access control(MAC) sublayer to provide modes of operation with useful data rates substantially higher than thosepreviously available. Significantly higher IEEE 802. 11 wireless local area network(WLAN) throughput isexpected to improve user experiences for current applications and to enable new applications and marketsegmentsNotice to usersLaws and requlationsUsers of these documents should consult all applicable laws and regulations. Compliance with theprovisions of this standard does not imply compliance to any applicable regulatory requirementsImplementers of the standard are responsible for observing or referring to the applicable regulatoryrequirements. iEEE does not, by the publication of its standards, intend to urge action that is not incompliance with applicable laws, and these documents may not be construed as doing so on that is not inCopyrightsThis document is copyrighted by the Ieee. It is made available for a wide variety of both public and privateuses.These include both use, by reference, in laws and regulations, and use in private self-regulationstandardization, and the promotion of engineering practices and methods. By making this documentavailable for use and adoption by public authorities and private users, the ieee does not waive any rights incopyright to this documentUpdating of IEEE documentsUsers of ieFF standards should be aware that these documents may be superseded at any time by theissuance of new editions or may be amended from time to time through the issuance of amendments,corrigenda, or errata. An official ieee document at any point in time consists of the current edition of thedocument together with any amendments corrigenda or errata then in effect In order to determine whethera given document is the current edition and whether it has been amended through the issuance ofamendmentscorrigendaorcrrata,visittheIeeEStandardsAssociationwebsiteathttp://ieeexplore. ieee. org/xpl/standards. jsp or contact the iEee at the address listed previously.For more information about the IEEE Standards Association or the Ieee standards development process,visittheIeeE-sawebsiteathttp://standards.ieeeorgErrataErrata,ifanyforthisandallotherstandardscanbeaccessedatthefollowingUrl:http://standards. ieee. org/reading/ieee/updates/errata/index. html. Users are encouraged to check this URL forta periodicallyInterpretationsCurrentinterpretationscanbeaccessedatthefollowingUrl:http://standards.ieeeorg/reading/ieee/interp/index htmlCopyright C 2009 IEEE. All rights reservedPatentsAttention is called to the possibility that implementation of this amendment may require use of subjectmatter covered by patent rights. By publication of this standard, no position is taken with respect to theexistence or validity of any patent rights in connection therewith. a patent holder or patent applicant hasfiled a statement of assurance that it will grant licenses under these rights without compensation or underreasonable rates, with reasonable terms and conditions that are demonstrably free of any unfairdiscrimination to applicants desiring to obtain such licenses. Other Essential Patent Claims may exist forwhich a statement of assurance has not been received. The Ieee is not responsible for identifying EssentialPatent Claims for which a license may be required, for conducting inquiries into the legal validity or scopeof Patents Claims, or determining whether any licensing terms or conditions are reasonable or nondiscriminatory. Users of this standard are expressly advised that determination of the validity of any patentrights, and the risk of infringement of such rights, is entirely their own responsibility. Further informationmay be obtained from the ieee Standards associationParticipantsWhen this amendment was sent to sponsor ballot, the IEEe 802. 11 Working Group had the followingofficersBruce P. Kraemer, ChairJon Walter Rosdahl, Vice Chair; Treasurer; and Chair, Task Group mbAdrian P. Stephens Vice chairStephen McCann, Secretary and Chair, Publicity standing Committee and Task group uTerry L. Cole, Technical Editor and Assigned Number AuthorityTeik-Kheong Tan, Chair, Wireless Next Generation Standing CommitteeDavid Bagby, Chair, Architecture Standing CommitteeBruce p. kraemer Co-Chair IMT-Advanced ad hoc commiteeLee armstrong, Chair, Task Group pDonald E Eastlake Ill, Chair;, Task Group sNeeraj Sharna, Chair, Task group lDorothy V. Stanley, Chair, Task Group v and IETF Ad hoc CommitteeJesse Walker, Chair. cTl Ad hoc committeePeter Ecclesine, Chair, Task group yMenzo Wentink, Chair, Task group zGancsh Venkatesan, Chair, Task Group aaEldad Perahia, Chair, Very High Throughput Study groupDarwin Enger, Co-Chair. IMT-Advanced ad hoc committeeWhen this amendment was sent to sponsor ballot, Task Group n had the following officersBruce P Kraemer. chairSILi. vice chairGarth Hillman and Jon Walter Rosdahl, SecretaryAdrian P. Stephens, Technical editorWhen this amendment was sent to sponsor ballot, the IEeE 802. 1l Working Group had the followingmembershiOsama S. aboulmagdMalik audchAmit bansalTomoko adachiCcrt A, awatoJohn. barrAlok aggarwalDavid bagbGal bassonCarlAldanaMichael bahrussa BavafaThomas AlexanderFan baiTuncer BaykasLee r. ArmstrongGabor BaikoJohn L. BenkoAlex ashleyDennis j. bakerMathilde benvenisteCopyright C 2009 IEEE. All rights reservedBiorn A. berkeRobert Y huangChiu ngoDaniel borgesDavid hunterEero nikulaAnthony braskichYasuhiko inoueRichardH. noensJoseph brennanAkio isoHideaki odagiriDavid britzJunghoon JeeJisung OhG. BumillerHongseok JeonChandra s. olsonNancy Cam-WingetYeonkwon JeongYouko omorNecati CanpolatJorjeta G JetchevaSatoshi oyamaJavier cardonaLusheng jiRichard H. PaineDouglas s ChanDaniel JiangAuld. palaniveluClint F. ChaplinPadam AflChangmin ParkCarl W. KainJungsoo parkMinho CheongNaveen K KakanMinyoung ParkMasato katoⅤ ijaykumar PatelNakjungDouglas KanBcminih. peirisLiwen chuRichard H. KennedyEldad perahiaTerry L. ColeJohn KenneJames e. petranovichRyon K. ColemanStuart 3. KerryAl PetrickCharles IJoonsuk kinFahd pirzadaTodor CooklevKyeongpyo KimJames d. portaroXavier p CostaSeong S. kimHenry s. PtasinskiDavid E CypherYongsan KimRene purnadiMarc de courvilleJarkko kneckChang w. PyoRolf J de vegtMark m. kobayashiEmily H QiTheodorus denteneerFumihide KojimaLuke QianJeremy de vriesTom KolzeHuyu QuSusan DickeyBruccp KJim e raabZhiming DingJohannes P KruysⅤ nuth raiYoshiharu doThomas KuehnelAli RaissiniaJohn dorseyThomas m. KuriharaHarish ramamurthyRoger P durandStephen G raymentSrinivasa duvvuriEdwin kwonLeonid razoumovDonald e. eastlakeZhou lanIvan reePeter Ecclesiaejeremy A landtEdward reussMichael ellisJoseph P. lauerAlex reznikStephen P. EmeottTae H. LeeRandal roebuckMarc emmelmannWooyoung leeJon walter rosdahlDarwin EngwerJoseph levyRichard royJoseph epsteinSheung liAlexander safonovⅤ inko ercegPaul linKazuyuki sakodaLars p. falkIlang liuHemanth sampathRobert fanfcllMichael livshitzKatsuyoshi SatoStefan fechterPeter LocHirokazu sawadaPaul h. feinberDaniel lubarDon schultzMatthew FischerAnthony f. maidaYongho SeokWayne k. FisherJakub majkowskiHuairong shaoRoberta fracchiAlastair MalarkyNeeraj sharmaRyuhei FundaJouni K. malinenStephen J ShellhammerMatthew gastAlexander maltsevlan SherlockJames p gilbBill marshallKai shiJeffrey gilbertRoman m. maslennikovShusaku shimadaReinhard GlogerSudheer mattaFrancois simonDavid goodallStephen Mc cannHarkirat SinghTugrul guenerJustin p mcnewGraham K. SmithJianlin gven meseckeMatt smithMark hamiltonRobert r. millerYoo-Seung SongC.J. HanseMichael monteKapil seBrian d. hartRajendra T. moortiVinay SridharaAmer A haHitoshi moriokaDorothy stanleⅤ egard hasselPeter MurrayAdrian P. StephensRobert f heileAndrew milesDavid S Stephenson〔 undo r. HertzRohit nabarCarl R. StevensonJunling hiJohn stineWendong huKengo nagataGuenaelt strutCopyright C 2009 IEEE. All rights reservedChin s SumGanesh VenkateHarry R. worstellEiji TakagiDalton t.Ⅴ ictorPengfei xiaMineo takaiGeorge A. vlantisAkira yamadaTcik-Khcong TanCssc r. walkerTakeshi yamamotoAllan thomsonunlWangmoya yamauraJerry thrasherngEric okuboCraig d. WarrenSu K. YongAlexander TolpinFujio WatanabeSeiji YoshioJason trachewskyPatrick WayeChristopher YoungSolomon b. traininMenzo m. wentinkArtur zaksRichard D. Van NeeFrank whettenHongyuan zhangAllert van zelstKyle williamsHuimin zhangMathieuⅤ arlet-AndmJames worshamJing zhiPrabodh varshneyJuan ZunigaContributions to this amendment was received from the following individualsBill ablⅵ inko ErcegPatrick labbeSantosh abrahamMustafa rozJoseph lauerTomoko adachiStefan fechterDongjun leeDmitry akhmetovPaul feinbergLin-Nan leeCarlos aldanaMatthew fischereeDave andrusGuido frederiksSok-kyu LeeMicha anholtTakashi FukagawaZhongding leiTsuguhide AokiPatrick FungJoseph levyYusuke asarEdoardo gallizioScott leyonhjelGeert awaterJames gardnerPen liDavid BaDevis gattSheung LiRaja banerjeaDavid HedbergYuan liKaberi banerieeGarth hillmanKevin liaoAmit bansalJin-Meng hoIsaac limGal bassonDale hocevarAlfred linAnui batraLouise hooAlbert liuJohn benkoMuhammad akramDer-Zheng liuMathilde benvenisteYasuhiko inoueMichael livshitzBjorn BjerkeKaz ishidaYufei BlakenshipTakashi ishidoshiroPeter LojkoDaniel borgesLakshmi lyerHui-Ling LouDouglas chanEric JacobsonAdina matacheJerry ChangYuh-Ren jauhLaurent mazetJohn ChangTaehyun JeonWilliam mcfarlandJeng-Hong ChenJari JokelaDarren mcnamaraStephen ChenVKJonesIrina medvedevYi-Ming ChenPadam AflArnaud meylanPei-ju ChiangNaveen KakaniMorgan mikFrancois chinSriniavs kandalaSeungwook minWoon Hau ChinAteet KapurPatrick mo上 mily chouAssaf KasherAndy molischLiwen chuMasato katoR. Tushar moortiKeith ChuggJohn KetchumMike moretonBrian ClassonJoonsuk KYuichi moriokaSean CoffeyPansop KimMarkus muckGabriella convertinoYoungsoo KimSyed Aon mujtabaMarc de courvilleGuenter KleindlAndrew mylesRolf de vegtKiyotaka KobayashiRohit nabarFranz dielacherCenk Koselhasa NagaiYoshiharu doiBruce p KraemerKengo NagataJohn deThomas KuehnelSeigo NakaodouglasTakushi KunihiroSanjiv nandaPeter ecclesiaeJoe KwakChiu nDarwin EngwerJoseph kwakAjit NimbalkerLeonid epsteinEdwin kwonGunnar NitscheCopyright C 2009 IEEE. All rights reservedHuaning NiuErik SchylanderRichard van neeIvan oakesMichael sealsNico van waesYoshihiro ohtanilual-Rong ShaoAllert van zelstEric OjardSuman sharmaAndres vila casadoTakeshi onizawaSteve shellhammerGeorgeⅵ lantisJob oostveenIan SherlockTimothy WakeleyFabio osnatoMasaaki shidaJesse walkerKafle padamTakashi shonoBrad wallacePratima paiSebastien SimoensMark wallaceArul palaniveluMassimiliano sitiRod waltonSubra parameswaraDoug SmithQi WThomas pareMatt smithXiaowen WangJean-Noel PatillonAmjadDeric WatersWei-Chung PengRobert staceyMark WebsterEldad perahiaAdrian P. StephensMenzo WentinkJim petranovichRichard WeseKrishna madhavan pillaiVictor StolpmanMike WilhoyteMadhavan pillaiSumei sunTimothy WongAngelo PoloniXiantao sunJames WoodyattNeeraj poojaryShravan surineniHenry ptasinskiIlan sutskoverAriton XhafaAleksandar PurkovicEiji Takagio xiaLuke oianMasahiro takasTomoya YamauraAli RaissiniaSeiichiro TakahashiEric YangSthanunathan ramakrishnanDaisuke takedaWen-Chang YehHarish RamamurthyTeik-Kheong TanChristopher YoungSridhar rameshYasuhiro TanakaHeejung YuRaffaele rivaStephan ten brinkArtur ZaksJon walter rosdahlGanesan ThiagarajanEldad zeiraStephanie Rouquette-LeveilEric OkuboHongyuan zhaMike rudeTim TowellJin ZhangJohn sadowskiJason trachewskyNing ZhangAtul salhotraSolomon traininQuan ZhouVincenzo scarpaDavid tungJohnny ZweigDonald schultzStefano valleJim syrenThe following members of the individual balloting committee voted on this amendment. Balloters may havevoted for approval, disapproval, or abstentionOsama aboulmagdBill cannonSouray duttaTomoko adachiJing CaoRichard eckardAlok AggarwalEdward CarlesCarl EklundThomas alexandeJames CarloStephen emeottRichard AlvinJuan CarreonMarc emmelmannEdward ChalfDarwin EngwcButch AntonDouglas s ChanJoseph epsteinDanilo antonelliKuor-Hsin ChangRobert fanfelleClint ChaplinShahin FarahaniDavid BagbyWei-Peng ChenShulan FengGabor BaikoYung-Mu ChenOddgeir FikstvedtMatthew ballHong ChengMatthew fischerRaja banerjeaAik ChindapoPrince francisVered BKeith ChowAvraham FreedmanJohn barrLiwen ChuDevon gaylePhilip beecherRyon ColemanMichael GeipelMathilde benvenisteCharles cookTheodore Georgantasharry bimsTodor CookiePieter -Paul giesbertsBjorn BjerkeHelge CowardJames gilbMonique brownJoseph decuirReinhard glogerRussell dietzMariana goldhamerWilliam byrdThomas dineenScrgiu gomaPctcr. calderonJohn dorseyDavid goodallCopyright C 2009 IEEE. All rights reserved

zynq-7000 pcb design guide.pdf

可以把固件加密后通过IAP下载，适合产品自动升级，保护固件程序，防破解。记得评分后归还积分

AltiumDesigner16 ,AD16,资源下载种子，百度网盘下载地址以及密码。AD16新一代电路图PCB设计软件。

变分模态分解（Variational mode decomposition，简称VMD）方法[18]，VMD方法将信号分解转化为约束变分问题，自适应地将信号分解为若干个IMF分量之和。

增量式PID的matlab实现，是simulinks仿真实现，网上的一般为位置式的PID，增量式PID的simulinks仿真我自己也找了很久，最终自己做了一个能用的

径向基函数（Radial Basis Functions，以下简称RBF）在数值和科学计算等领域被广泛应用，例如解微分方程、人工神经网络、曲面重建、计算机辅助设计、计算机图形学和多元插值等。RBF 插值方法不受输入参数的限制，可以进行高维插值。

对于并网逆变器的设计，关于DSP的控制算法，还有对硬件电路的设计，摘要摘要微电网系统的电能通常是由多种分布式发电装置或储能装置经过电力变换组网形成,其供电单元具有分散性,间断性的特点。不论是何种分布式发电装置或者储能装置,最终都要并入可供用户直接使用的交流电网,因此必须经过一系列电能变换,才能保证安全、高效的将电能馈送至电网。微电网三相并网逆变器就是其并网的关键器件之一,其在微电网运行管理系统的统一调度控制下运行。论文首先介绍了微电网以及各类分布式电能的概念及特点,之后系统的介绍了三相并网逆变器的功能,结构,并按照三部分进行介绍:主功率电路部分,基于的控制电路部分以及三相全桥逆变器控制策略。主功率电路部分按照能量变换过程,将系统分为两级:前级变换部分和后级的二相逆变部分。并根据设计功率详细介绍主开关器件的选型,驱动电路以及保护电路的确定和该部分其他电路器件参数的选择依据基于控制电路主要分为了两部分来具体介绍:通用的最小工作系统和用于该三相全桥逆变器控制芯片的接口电路。最小工作系统包括系统电源,晶振,串口等;接口电路包括控制信号放大电路,以及电能质量采样电路。以交流电能的采样部分为主,介绍了采用六通道同步采样芯片的信号调理电路的设计。文章还对常用的逆变器控制方案进行比较,给出本系统使用控制策略。并结合系统采用的心片的结构特点介绍了软件设计思路最后,文章还进行该论文相关的仿真和测试实验。通过仿真和实验结果验证了设计的正确性关键词:分布式电源、微电网、并网逆变器目录目录第一章绪论1.1课题背景与意义1.2微电网系统综述1.2.1微电网的概念及优点1.2.2微电网电源22232.3微电网中微电源的供电模式1.2.4分布式并网系统的并网标准1.2.5微电网逆变器的特点3本文主要研究内容第二章并网逆变器的拓扑结构及工作原理2.1并网逆变器的分类及设计原则2.2并网逆变器主电路结构的设计.6788992.2.1输入方式与控制方式的确定2.2.2能量转换结构的确定..102.3直流变换电路的设计2.3.1 Boost斩波升压电路图及基本原理2.3.2电感电流连续的条件.......122.4三相逆变电路的设计2.4.1组合式三相逆变器132.1.2半桥式三相逆变器2.1.3全桥式三相逆变器2.4.4三相逆变器的工作原理2.5谐波扣制电路的设计182.5.1谐波的定义,,,,,,,,,,,,,,192.5.2滤波器的选择2.6本章小结.....19目录第三章并网逆变器功率电路的设计.3.1设计技术指标看1垂春203.2电力电子器件的选型●·垂垂203.2. L IGBT的结构和工作原理垂·春看垂垂213.2.2IGBT的特性·垂非,,,,,223.2.3IGBT驱动电路的设计3.2.4IGBT过流保护电路243.2.5工作波形253.3整体设计3.4前级DC-DCB00s电路273.1.1组成及参数设计,,,,,,,,273.4.2主要参数设计273.4.3 MATLAB仿真.●·春293.5后级DC-AC三相仝桥逆变电路.5.1主要参数设计·◆·D313.5.2滤波电感D垂鲁323.6控制检测系统总体设计343.6.1直流电能传感器的选择和使用343.6.2交流电能传感器的选择和使用.353.7本章小结.第四章基于TMS32OF2812的控制电路设计..374.1TMS320LF2812简介374.2系统工作过程及功能设计.1.3TMS320LF2812通用部分电路的设计13.1电源电路4.3.2晶振电路,.4.3.3外部存储器的扩展414.3.4串凵电路的设计4.4TMS320LF2812接口电路的设计424.4.1交流信号的同步采集..434.4.2直流信号的采集....51目录4.4.3SPWM驱动信号输出电路,D·垂4.4.4eCAN总线驱动器的选择鲁D垂垂4.5木章小结.第五章三相并网逆变器的控制策略及软件设计..545.lPWM理论简介.545.2常见控制方式.垂···看垂·垂5.2.1滞环瞬时比较方式555.2.2 SVPWM控制方式565.2.3SPWM控制方式....565.3SPWM波的产生575.4基于TMS320LF2812控制芯片的软件设计595.4.1程序总体设计595.4.2SPWM控制波中断程序605.4.3其他中断子程序,615.5本章小结垂·垂·垂61第六章结论与展望..626.1设计制作实物6.2系统逆变输出646.3展望.6致谢67参考文献攻硕期间取得的研究成果第一章绪论第一章绪论木章介绍了微电网系统的概念以及发展情况,闸明了论文选题的背景和意义,明确了木文研究目标。1.1课题背景与意义能源是人类社会赖以生存和发展的物质基础,伴随着现代社会的发展,人类对于能源的需求愈来愈多,但是传统的化石能源如煤炭、石油与天然气等,在转化为其他各种形式的能量时,会不同程度的产生废气、废物等,严重污染了自然环境,对人类的健康和地球的生态平衡等都造成了不可忽视的影响;更严峻的是化石能源不可再生,终会有消耗殆尽的时候。因此为了保护人类的生态环境,避免能源危机,人类必须减少化石能源的份额,增加新型能源和可再生能源的比重,向建立可持续发展的能源体系过渡。我国又是世界上最大的煤炭生产国和消费国,以及世界上少数几个以煤炭为主要能源的国家之一,能源短缺以及对环境造成的污染更是不容我们迟疑,新型能源以及可再生能源的开发与应川势在必行。可再生能源中的太阳能,风能等新型能源都是当前的研究热点。此类能源具有资源卡富,洁浄环保,分布分散,位置灵活的特点,极好的适应了资源分布和分散电力的需求,因此多作为分布式电源用于局部或偏远地区的发电,有效减少了配电网的巨额投资和长距离传输中所产生的电能浪费;此外,分布式电源还可与大电网互为各用,提高供电可靠性等。虽然分布式电源有着自身的优点,但是也存在诸多问题:分布式电源单机接入成本高,控制困难;为了减小分布式电源对大电网的冲击,大系统通常对其采取限制、隔离的方式来处理;当大电网系统发生故障时,分布式能源必须退出运行等,这些都大大限制了分布式电源充分发挥其自身的优势。为了充分发挥分布式电源的优势,降低其对公共电网的不利影响,于是提出了把分布式电源、储能设备以及负荷一起作为配电子系统一一微电网(微电网及用户对所使川电能的电压值、功率、功率因数和谐波畸变因数等都有严格的要求,如何使各分布式电能单元与微电网实现安全、高效的并网是其应用的重要环节。本文就是研究微电网中,各分布式发电系统与电网之闫的电力电电子科技大学硕上学位论文子学界面一一三相并网逆变器,并基于的设计,实现一种在微电网运行管理系统下根据指令协调运行,安全可靠,相位可调的三相并网逆变器1.2微电网系统综述1.2.1微电网的概念及优点国际上对微型电网的定义各不相同,美国、欧盟、日本等都各有特点年,美国电力可靠性技术解决方案协公()首次对微电网展开」研究。年,从系统结构、控制方法、经济效益等方面系统全面地介绍了微电网的概念。微电网是一种由微型电源、负载、监控保护装置共同组成的为一定区域供电的小型发配电系统。它通过一个公共连接点(,)与大电网连接,即可以独立运行确保区域内部供需平衡,也可以与大电网并联运行,形成一个大型电网与分布式电源微电网联合运行的系统。微电网相对于外部大电网表现为单一的受控单元,并可同时满足用户对电能质量和供电安全的要求,与传统的大电网相比较,具有下列显著优点。()投资小、见效快。发展微电网可以减少延缓对大型常规发电厂与输配电系统的投资,降低投资风险。()满足特殊场合的川电需求。如是大电网不易达到的偏远地区的供电,避免输电网长距离送电的电能传输损耗;以及临时大型活动的供电系统等()提高供电可靠性。采用分布式电源的微电网可以弥补大电网安全稳定性上的不足,在大电网停电时维护全部或部分重要拥护的供电,避免大面积停电造成的严重后果)釆用分布式电源组网,启停方便,调峰性能好,冇利于平衡负荷)将太阳能、风能等可再生能源组网使用,可就地补偿可再生能源发电装置功率输出的问歇性问题()储能系统组网后,可在负荷低估从电网获取宦于电能,而在负荷高峰时向电网送电,提高电网运行效率1.2.2微电网电源电源是微网中重要的组成部分,相对于传统电力系统的电源都是同步发电机,