减速机 电动滚筒 振动源电动机新型产品规划与开发Word文件下载.docx

减速机 电动滚筒 振动源电动机新型产品规划与开发Word文件下载.docx

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1.Introduction

2.Energyconsumption

3.Currentstateoftheart

3.1.Generation

3.2.Electricmotors

3.3.Powerelectronicconverters

3.4.Variable-speeddrives

3.5.Completesystem

3.5.1.Industrial

3.5.2.Household

3.5.3.Transport

3.6.Marketbarriers

4.Futureadvancesto2050andbeyond

4.1.Keychallenges

4.1.1.Extensionofapplicationareas

4.1.2.Integratedsystemdesign

4.1.3.Driveefficiency

4.2.Keyengineeringandscientificadvances

4.2.1.Electricalmachines

4.2.2.Powerelectronicsandcontrol

4.2.3.Integratedsystems

5.Conclusions

References

Designandimplementationofanovelhybrid-electric-motorcycletransmission 

AppliedEnergy

ThishybridpowersystemincorporatesamechanicaltyperubberV-belt,continuously-variabletransmission（CVT）andchaindrivestocombinepowerofthetwopowersources,agasolineengineandanelectricmotor.Thesystemusesfourdifferentmodesinordertomaximizetheperformanceandreduceemissions:

electric-motormode;

enginemode;

engine/chargingmode;

andpowermode.Themainadvantagesofthisnewtransmissionincludetheuseofonlyoneelectricmotor/generatorandtheshiftoftheoperatingmodeaccomplishedbythemechanical-typeclutchesforeasycontrolandlowcost.Kinematicanalysesanddesignareachievedtoobtainthesizeofeachcomponentofthissystem.Adesignexampleisfabricatedandtested.

2.Parallelhybridtransmission

3.Kinematicanalysisanddesign

3.1.Speedratioofthechaindriveandfinaldrive

3.2.SpeedratiooftheCVT

3.3.Thespeedratioofthehybrid-powersystem

4.Designexamples

4.1.Prototypedevelopment

4.2.Testandexperimentalresults

Acknowledgements

Anovelpowersplittingdrivetrainforvariablespeedwindpowergenerators 

RenewableEnergy

Inthispaperanovelelectricallycontrolledpowersplittingdrivetrainforvariablespeedwindturbinesispresented.Avariablespeedwindturbinehasmanyadvantages,mainlyitcanincreasethepoweryieldfromthewind,alleviatetheloadpeakintheelectrical-mechanicaldrivetrain,andpossesalonglifetime,also,itcanofferthepossibilitytostorethebrieflytimelywind-conditionedpowerfluctuationsinthewindrotor,inwhichtherotarymassesareusedasstoragesofkineticenergy,consequently,thevariablespeedwindturbinesareutilizedinthewindpowerindustrywidely.Inthiswork,onthebasisofaplanetarytransmissionanewkindofdrivetrainforthevariablespeedwindturbinesisproposed.Thenewdrivetrainconsistsofwindrotor,three-shaftedplanetarygearset,generatorandservomotor.Thewindrotoriscoupledwiththeplanetcarrieroftheplanetarytransmission,thegeneratorisconnectedwiththeringgearthroughanadjustmentgearpair,andtheservomotorisfixedtothesungear.Bycontrollingtheelectromagnetictorqueorspeedoftheservomotor,thevariablespeedoperationofthewindrotorandtheconstantspeedoperationofthegeneratorarerealized,therefore,thegeneratorcanbecoupledwiththegriddirectly.Atthenominaloperationpoint,about80%oftherotorpowerflowthroughthegeneratordirectlyand20%throughtheservomotorandasmallpowerelectronicssystemintothegrid.Asaresult,thedisadvantagesinthetraditionalwindturbines,e.g.highpriceofpowerelectronicssystem,muchpowerloss,strongreactionfromthegridandlargecrashloadinthedrivetrainwillbeavoided.

2.Configurationofthenovelvariablespeeddrivetrain

3.Variablespeedoperation

4.Powersplittingperformance

5.Transmissionefficiency

6.Operationrange

7.Conclusion

Fromtransmissionerrormeasurementtopulley–beltslipdeterminationinserpentinebeltdrives:

Influenceoftensionerandbeltcharacteristics 

MechanismandMachineTheory

Serpentinebeltdrivesareoftenusedinfrontendaccessorydriveofautomotiveengine.Theaccessoriesresistanttorquesaregettinghigherwithinnewtechnologicalinnovationsasstater-alternator,andbelttransmissionsarealwaysaskedforhighercapacity.Twokindoftensionersareusedtomaintainminimumtensionthatinsurepowertransmissionandminimizeslip:

dryfrictionorhydraulictensioners.Anexperimentaldeviceandaspecifictransmissionerrormeasurementmethodhavebeenusedtoevaluatetheperformancesofagenerictransmissionbydeterminingthepulley–beltslipforthesetwokindsoftensioner.Transmissionerrorbetweenpulleys,pulley/beltsliparededucedfrompulleyrotationanglemeasurements.Resultsobtainedshowthat:

theuseoftensionerlimitsbeltsliponpulleys,pulley–beltslipisreachablefromtransmissionerrormeasurement,beltnonuniformcharacteristicsareresponsibleoflowfrequencymodulationsoftransmissionerror.

2.Experimentalsetup

2.1.Beltdrivedescription

2.2.Measurementdevices

3.Pulley–beltslipanalysis

3.1.Fromtransmissionerrortosliprate

3.2.Results

3.3.Transmissionerrorrelatedtononuniformbeltcharacteristics

4.Conclusion

Acompact,highefficiencycontra-rotatinggeneratorsuitableforwindturbinesintheurbanenvironment 

Thispaperisconcernedwiththedesign,developmentandperformancetestingofapermanentmagnet（PM）generatorforwindturbineapplicationsinurbanareas.Theradiallyinteractingarmaturewindingsandmagnetarrayarecarriedondirectdrive,contra-rotatingrotors,resultinginahightorquedensityandefficiency.Thistopologyalsoprovidesimprovedphysicalandmechanicalcharacteristicssuchascompactness,lowstartingtorque,eliminationofgearboxes,lowmaintenance,lownoiseandvibration,andthepotentialformodularconstruction.Thedesignbriefrequireda50 

kWcontinuousratedprototypegenerator,witharelativespeedattheair-gapof500 

rpm.Atestrighasbeeninstrumentedtogivemeasurementsofthemechanicalinput（torqueandspeed）andelectricaloutput（voltage,currentandpower）ofthegenerator,aswellastemperaturereadingsfrominsidethegeneratorusingawirelesstelemetrydevice.Peakpoweroutputwasfoundtobe48 

kWatacontra-rotatingspeedof500 

rpm,closetothedesigntarget,withanefficiencyof94%.Itisanticipatedthatthegeneratorwillfindapplicationinawiderangeofwindturbinedesignssuitedtotheurbanenvironment,e.g.typessitedonthetopofbuildings,asthereisgrowinginterestinprovidingquiet,lowcost,cleanelectricityatpointofuse.

2.Designandmanufactureconsiderations

3.Testfacilityconstruction

4.Generatorperformanceresults

电动滚筒

电机和减速器

新型

驱动装置

固定式和移动式

带式输送机

结构紧凑、传动效率高、噪声低、使用寿命长，运转平稳、工作可靠、密封性好、占据空间小、安装方便、维护简单

恶劣环境条件

潮湿、泥泞、粉尘、高温

工作环境

皮带运输机和提升设备

动力

矿山、冶金、化工、煤炭、建材、电力、粮食及交通运输

Electricdrum

Motorandreducer

New

Drive

Fixedandmobile

BeltConveyor

Compact,hightransmissionefficiency,lownoise,longlife,smoothoperation,reliablesealing,smallfootprint,easyinstallation,simplemaintenance

Adverseenvironmentalconditions

Wet,muddy,dust,hightemperature

Workenvironment

Beltconveyorandliftingequipment

Power

Mining,metallurgical,chemical,coal,buildingmaterials,electricity,foodandtransport

1,440articlesfoundfor:

pub-date>

1989andtak（（（Electricdrum）orDriveor（Motorandreducer）or（Beltconveyor）or（liftingequipment）or（Workenvironment））and（Newor（Fixedandmobile）orCompactor（hightransmissionefficiency）or（lownoise）or（longlife）or（smoothoperation）or（reliablesealing）or（smallfootprint）or（easyinstallation）or（simplemaintenance））and（（Adverseenvironmentalconditions）orWetormuddyordustor（hightemperature）orPowerorMiningormetallurgicalorchemicalorcoalor（buildingmaterials）orelectricityorfoodortransport））

DesigningDryersUsingHeatandMassExchangeNetworks:

AnApplicationtoConveyorBeltDryers 

ChemicalEngineeringResearchandDesign

Classical1-Dnumericalsimulationsofdryersinvolvethesolutionofnonlineardifferentialrelationswhichincludeb