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

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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、ynchronousgenerator0ismainfluxfrotorleakageflux19Themagneticcircuitmachineatno-loadMMFwaveandmagneticfieldatno-load20Open-circuitcharacteristic21Fig.5-11Synchronousmachineopen-circuitcharacteristicE0=f(If)saturatedcoefficientMMFwavesandmagneticfieldsunderload5.2.

8、2Loadedoperationofsynchronousgenerators22Ns23Effectsofarmaturemmfonboththespacedistributionoftheair-gapfluxandthemagnitudeofthenetfluxper