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Section2CircuitElementsTherearetwotypesofelements(components)foundedinelectriccircuits:passiveelementsandactiveelements.BookP5Whatispassiveelements?Whatisactiveelements?ActivepowerandreactivepowerAnactiveelementiscapableofgeneratingenergywhileapassiveelementisnot.ResistorCapacitorInductorTransistorVoltageandCurrentsourceOhm’sLawstatesthatthevoltageacrossaresistorisdirectlyproportionaltothecurrentflowingthroughtheresistor.Theconstantofproportionalityistheresistancevalueoftheresistorinohms.Section3Ohm’sLawBookP10Kirchhoff'sCurrentLawisgivenbySection4Kirchhoff'sLawBookP14Kirchhoff'sCurrentLaw(KCL)statesthatthealgebraicsumofcurrentsenteringanode(oraclosedboundary)iszero.AnalternativeformofKCL:Thesumofthecurrentsenteringanodisequaltothesumofthecurrentsleavingthenode.Kirchhoff'sVoltageLaw:Kirchhoff'sVoltageLaw(KVL)statesthatthealgebraicsumofallvoltagesaroundaclosedpath(orloop)iszero.AnalternativeformofKVL:Sumofvoltagedrops=SumofvoltagerisesSomewords:(1)topology拓扑,拓扑学,拓扑结构Thetopologyofthenetworkmaybering,starorbus.网络的拓扑结构可以是环形的、星形的或总线形的。(2)Clockwise顺时针方向(的);Counterclockwise逆时针方向(的);Dothevanesinthefigurerotateclockwiseorcounterclockwise?图中叶片的旋转方向是顺时针的,还是反时针的?Section5BasicAnalysisMethods(CircuitTheorems)BookP185.1叠加定理(SuperpositionTheorem)5.2替代定理(SubstitutionTheorem)5.3戴维南定理和诺顿定理(Thevenin-NortonTheorem)5.4特勒根定理(Tellegen’sTheorem)5.5互易定理(ReciprocityTheorem)5.6对偶原理(DualPrinciple)NodalAnalysisMeshAnalysisSomewords:(1)wye-connectedY形连接,星形连接(2)delta-connected△形连接,三角形连接(3)be120°outofphase相位相差120度(4)Phasesequence相序positivesequence;negativesequence;zerosequenceBookP65Chapter4Section1PrincipleofOperationofanInductivemachineTheleft-handruleisapplicabletochargedconductormovinginamagneticfield,thatisapplicabletothemotor,whiletheright-handruleisapplicabletoanelectromagneticinductionphenomenon,thatisapplicabletothegenerator.Motorandgenerator同步电机(SynchronousGenerator)汽轮发电机-转速高、离心力大-隐极式non-salientpoledistributedpolar水轮发电机-转速低、极数多-凸极式salientpole同步电机的结构statorcorehydrogencondenserSlipring一、隐极同步发电机的基本结构fieldwindings汽轮发电机转子铁心的铣槽(Slotting)二、水轮发电机结构(Hydrogenerator,Hydroturbine)(1)立式水轮发电机(2)卧式水轮发电机VerticalhydrogeneratorHorizontalturbine(3)灯泡贯流式水轮发电机(bulbtubularturbinegenerator)10000kW水轮机转子水轮发电机模型三峡电站ThreeGorgeshydropowerstation发电机定子机座外径达21.4米,在工厂制造完成后,分数搬运至工地,吊入机坑焊接拼装。•定子绕组设计为三相双层波形绕组,每相5支路并联,共1080根罗贝尔线棒组成。绕组轮换数为1—8—14,每极每相槽数为9/4,节距为13发电机定子总装配发电机定子总装配三峡电站发电机转子是水轮机组中,整体吊装重量最重的部件,直径18米,重量超过1800吨,安装间隙只有3厘米。异步电动机(AsynchronousGenerator)异步电动机的定子是由机座、定子铁心和定子绕组三个部分组成。机座定子铁心定子绕组housingstatorcorestatorwinding
本文标题:第4课-基本电路定律发电机
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