ABB Harmonics in HVAC applications - what it is and how to solve it with ultra-low harmonic drives by ABB 指导原则(英语).pdf

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HVACGUIDE

HarmonicsinHVACapplications-

whatitisandhowtosolveit

Whenlookingtomitigateharmonic

disturbancesinacost-effectiveway,

theACH580Ultra-LowHarmonicdrive

isthesolution

1HVACGUIDEDRIVETECHNOLOGYTOMITIGATEHARMONICS

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Introduction

HVACsystemdesigntechnology

Dependingonyourspecificoperatingsector–buildings,hospitals,data

centers,orcommercialrefrigeration–yourHVACsystemcancontroland

safeguardmuchmorethanjusttemperature.

OperationsManagerEngineeringConsultant

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“AmajorchallengeI‘mfacingasa“Healthcarefacilitiesneedto

datacenteroperatorishowtoperformreliably,consistently,

coolthefacilityinanandaccurately.”

environmentallysustainableway.”

Inthebuildingsindustry,usageofVariableThemajorityofHVACapplicationsinAustralia

SpeedDrives(VSDs)isnowagivenforalmostallfeatureVSDsequippedwithDCchokesto

applicationslikeAirHandlingUnits(AHU),chillermaintainharmoniccurrentcontrol.

compressors,ventilationfans,stairwell

pressurisationfans,chilledwaterandcondenserHowever,evenwiththeDCchokes,the

waterpumps,andmore.Generally,6-pulsediodeharmonicsofa6-pulseVSDisreducedtoonly

rectifier-basedVSDsareusedforthese35-5%THDi(TotalHarmonicCurrent

applications,andimplementingtheseVSDsDistortion)fromthelevelsof80-120%forthose

contributeimmenselytoenergyefficiencyandVSDswithoutanyformofharmoniccontrolatall.

energycostsavings.

DRIVETECHNOLOGYTOMITIGATEHARMONIC