High frequency conducted emission in AC motor drives fed by frequency converters: sources and propagation paths

275 Pages·2018·36.78 MB·English

by  Luszcz

FFIRS Date:May14,2018 Time:11:40am
HighFrequencyConducted
EmissioninACMotorDrives
FedbyFrequencyConverters
FFIRS Date:May14,2018 Time:11:40am
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FFIRS Date:May14,2018 Time:11:40am
High Frequency Conducted
Emission in AC Motor Drives
Fed by Frequency Converters
SourcesandPropagationPaths
JaroslawLuszcz
GdanskUniversityofTechnology,Poland
FFIRS Date:May14,2018 Time:11:40am
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10 9 8 7 6 5 4 3 2 1
FFIRS Date:May14,2018 Time:11:40am
Tothosewhohavenotbeengiventhechancetogettheeducationtheywanted.
FFIRS Date:May14,2018 Time:11:40am
Whenpeopleofsimilarfrequenciescometogether,
outputisnotasimplesumofindividualwork,butexponential.
Insciencewetermthisphenomenonasresonance.
Outputatthisstageisbeyondanylogicallimit.
RavindraShukla
FGLOS Date:May14,2018 Time:12:59pm
vii
ContentsinBrief
1 IntroductiontoConductedEmissioninAdjustableSpeedDrives 1
2 ConductedEmissionOriginsinSwitch-ModePowerConverters 21
3 ConductedEmissionGenerationbyFrequencyConverterinASD 45
4 PropagationofMotor-Side-OriginatedConductedEmissionTowardthe
PowerGrid 81
5 ModelingofConductedEmissioninASD 101
6 BroadbandBehaviorofFundamentalComponentsofASD 137
7 ImpactofMotorFeedingCableonCMCurrentsGeneratedinASD 203
FGLOS Date:May14,2018 Time:12:59pm
FGLOS Date:May14,2018 Time:12:59pm
ix
Contents
ListofFigures xiii
ListofTables xxiii
Preface xxv
Symbols xxvii
Acronyms xxix
Glossary xxxi
1 IntroductiontoConductedEmissioninAdjustableSpeedDrives 1
1.1 High-FrequencyEmissionofSwitch-ModePower
Converters 1
1.2 CharacteristicIssuesofConductedEmissionin
AdjustableSpeedACMotorDrives 2
1.3 EssentialEMCProblemsofIntegrationofASDwiththe
PowerGrid 5
1.4 ScopeoftheBook 9
1.5 EMC-in-ASDRelatedAssumptions,Definitions,and
NamingConventions 10
References 14
2 ConductedEmissionOriginsinSwitch-ModePowerConverters 21
2.1 SpectralSideEffectsofFastSwitchingofVoltagesand
Currents 21
2.2 SpectraEstimationofSwitch-ModeWaveforms 24
2.2.1 RectangularWaveforms 25
2.2.2 TrapezoidalWaveforms 29
2.2.3 HigherOrderTransitionShapes 35
2.3 GraphicalEstimationofEmissionSpectra 36
2.4 SpectralAnalysisofSwitch-ModeConverterswithin
FrequencyRangeofConductedEmission 38
FGLOS Date:May14,2018 Time:12:59pm
x Contents
2.5 Summary 41
References 42
3 ConductedEmissionGenerationbyFrequencyConverterin
ASD 45
3.1 ClassicModulationPatternsUsedinASD 45
3.2 ConductedEmissionGenerationPathwaysinASD
Applications 49
3.2.1 DMCurrentPathsatMotorSideofFrequencyConverter 52
3.2.2 CMCurrentPathsatMotorSideofFrequencyConverter 54
3.3 MutualCoexistenceofCMandDMVoltagesandCurrentsin
ASD 55
3.3.1 CM-to-DMConversionofVoltagesandCurrentsinASD 56
3.3.2 DM-to-CMConversionofVoltagesandCurrentsinASD 59
3.3.3 Motor-SideDMCurrentsDistributionDuringActive-Vectors
Switching 62
3.3.4 Motor-SideCMCurrentsDistributionDuringActiveVectors
Switching 64
3.4 ExperimentalStudyofInverter’sOutputCurrentandVoltage
Waveforms 65
3.4.1 VoltageTransientsatACMotor’sTerminals 66
3.4.2 CurrentTransientsatInverter’sOutput 73
3.5 Summary 76
References 77
4 PropagationofMotor-Side-OriginatedConductedEmissionToward
thePowerGrid 81
4.1 CharacteristicExternalLoopsofCommonModeCurrentsin
theASD 81
4.2 CommonModeCurrentsCouplingPathsInsideFrequency
Inverter 82
4.3 TransferofCommonModeCurrentsviaDCBus 83
4.4 TransferofCMCurrentsThroughDiodeRectifier 85
4.5 DCBusCMVoltageRipplesasMeansofTransfer
ofConductedEmission 86
4.5.1 DiodeRectifier-RelatedCMVoltageRipples 88
4.5.2 FrequencyInverter-RelatedCMVoltageRipples 89
4.6 TransferofCMCurrentsfromMotorSidetoGridSideof
FrequencyConverter 90
4.7 Summary 97
References 98