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ID:50047172
大小:8.79 MB
页数:90页
时间:2020-03-08
《Electric Machinery 电机学 英汉双语 教学课件 作者 刘慧娟 英文课件Chapter5-Synchronous Machines.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Chapter5SynchronousMachines1content5.1Construction,operationmodesandratingsofsynchronousmachines5.2Operationofsynchronousgenerators5.3Voltageequation,phasordiagramandequivalentcircuitofsynchronousgenerators5.4Powerandtorqueequationsofasynchronousgenerators5.5Opera
2、tingcharacteristicsofsynchronousgenerators5.6ParallelOperationofsynchronousgenerators2Theoperationprincipleofsynchronousgenerators(review)3+-Collectorringsbrushes5.1Construction,operationmodeandratingsofsynchronousmachinesAccordingtotheshapeofthemagneticpolesonthero
3、tor,arevolving-fieldsynchronousmachinecanbedividedintotwobasictypesofnon-salientandsalientconstructions45.1.1Constructionofsynchronousmachines5nonsalientpolesalientpole(cylindricalrotor)UniformairgapairgapisnotuniformRotor6Cylindricalrotorsynchronousmachineconstruct
4、ion7FieldwindingsStator8steamturbinegeneratorsets9VerticalhydrogeneratorHorizontalhydrogeneratorSalient-polesynchronousmachineconstruction10VerticalhydrogeneratorHorizontalhydrogeneratorSalient-polesynchronousmachineconstructionVerticalhydrogeneratorHorizontalhydrog
5、enerator11Therotorof10000kWhydrogenerator12AsingleSalientpoleStator13Dividedstatorofalargehydroelectricgenerator14Acutwaydiagramofaladgesynchronousmachine15Hydroelectricset(Hydraulicturbinegeneratingset)发电机调相机电动机5.1.2Threeoperationmodesofsynchronousmachines165.1.3R
6、atingsofsynchronousmachinesCapacityorpowerVoltage(line)Current(line)powerfactorFrequencySpeedfieldvoltageandcurrent175.2Operationofsynchronousgenerators5.2.1No-loadoperationofsynchronousgenerators5.2.2Loadedoperationofsynchronousgenerators185.2.1No-loadoperationofas
7、ynchronousgenerator0ismainfluxfrotorleakageflux19Themagneticcircuitmachineatno-loadMMFwaveandmagneticfieldatno-load20Open-circuitcharacteristic21Fig.5-11Synchronousmachineopen-circuitcharacteristicE0=f(If)saturatedcoefficientMMFwavesandmagneticfieldsunderload5.2.
8、2Loadedoperationofsynchronousgenerators22Ns23Effectsofarmaturemmfonboththespacedistributionoftheair-gapfluxandthemagnitudeofthenetfluxper
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