1. Project keeb kwm

Nrog rau kev siv cov inverters, LED teeb pom kev zoo, qhov sib txawv zaus tsav (VFDs), UPS systems, thiab lwm yam khoom siv hluav taws xob hluav taws xob hauv cov chaw ua si thiab cov chaw lag luam, kev sib haum xeeb hauv lub zog xa hluav taws xob tau dhau los ua qhov hnyav zuj zus.

 

Kev tshuaj xyuas hluav taws xob hluav taws xob tau qhia tias qhov sib txawv ntawm qhov sib txawv hauv ntau chav faib hluav taws xob tau dhau qhov kev txwv uas tau teev tseg los ntawm cov hluav taws xob ntsuas hluav taws xob. Txhawm rau txhim kho lub zog zoo thiab ua kom muaj kev nyab xeeb kev ua haujlwm, lub tshuab hluav taws xob muaj zog (APF) tau teeb tsa rau kev sib haum xeeb thiab kev siv hluav taws xob rov ua haujlwm.

 

2. Nkag siab txog Harmonics nyob rau hauv Fais Systems

2.1 Fundamental Wave thiab Harmonics

Hauv cov txheej txheem fais fab, qhov tseem ceeb ntawm qhov voltage thiab tam sim no hauv Suav teb yog 50Hz. Txawm li cas los xij, feem ntau cov khoom siv hluav taws xob niaj hnub no tsis yog - cov khoom tawm, xws li:

• Zaus converters
• Inverters
• LED tsav tsheb
• UPS systems
• Cov khoom siv roj teeb
• Industrial automation khoom siv

 

Cov khoom siv no tsim cov khoom siv tam sim no thiab qhov hluav taws xob nrog cov zaus uas yog qhov sib npaug ntawm cov zaus zaus (piv txwv li, 150Hz, 250Hz, thiab 350Hz). Cov khoom siv tsis xav tau no yog hu ua harmonics.

Harmonics distort tus qauv sinusoidal waveform ntawm lub hwj chim system thiab tsis zoo rau tag nrho cov hwj chim zoo.

 

 

2.2 Kev phom sij ntawm Harmonics

Kev sib haum xeeb ntau dhau tuaj yeem ua rau muaj teeb meem loj hauv cov tshuab hluav taws xob, suav nrog:

• Ntau zog poob hauv cables thiab transformers
• Overheating ntawm cov khoom siv hluav taws xob
• Accelerated rwb thaiv tsev laus
• Txo kev pab cuam lub neej ntawm capacitors thiab motors
• Malfunction ntawm rhiab electronic devices
• Txo hwj chim yam
• Kev siv hluav taws xob ntau dua
• False tripping ntawm cov cuab yeej tiv thaiv
• Kev ua haujlwm ntev- lub sijhawm ua haujlwm nyob rau hauv cov xwm txheej hnyav hnyav tuaj yeem ua rau muaj kev puas tsuaj mus tas li rau cov khoom siv hluav taws xob thiab txo qis kev ntseeg siab.

 

Raws li lub teb chaws tus qauvGB/T 14549-1993 - Fais fab Quality: Harmonics hauv Public Power Grid, qhov tso cai tag nrho harmonic distortion (THD) txwv hauv Suav teb yog:

0.38kV qis-voltage system:THD Tsawg dua lossis sib npaug li 5.0%

6kV–10kV nruab nrab-voltage system:THD Tsawg dua lossis sib npaug rau 4.0%

 

3. Active Fais Fab Lim (APF) Txee

3.1 Qhov txawv ntawm Active thiab Passive Power Filters

Active Fais Fab Filter (APF)

Lub Zog Hluav Taws Xob Siv Hluav Taws Xob siv cov khoom siv hluav taws xob semiconductor thiab cov cuab yeej ntse tswj hwm los saib xyuas kev sib haum xeeb hauv lub sijhawm. Nws cia li tsim cov nyiaj thim rov qab rau dynamically tshem tawm cov kev sib raug zoo tam sim no hauv daim phiaj hluav taws xob.

Piv nrog rau cov kev lim dej ib txwm siv, APF systems muab:

• Tiag -time harmonic them
• Dynamic teb
• Tsis siv neeg kho
• Multi- muaj peev xwm tiv thaiv kev sib haum xeeb
• Reactive zog them nyiaj yug

 

Passive Fais Fab Lim

Passive Power Filter feem ntau muaj cov capacitors, reactors, thiab LC lim circuits, zoo ib yam li cov khoom siv hluav taws xob siv hluav taws xob.

Passive fais fab lim tsuas tuaj yeem cuam tshuam kev sib haum xeeb ntawm cov zaus tshwj xeeb thiab muaj ntau yam kev txwv:

• Cov yam ntxwv ruaj khov
• Risk ntawm resonance
• Kev lim dej tsawg
• Tsis zoo adaptability rau kev hloov load tej yam kev mob

 

Yog li ntawd, APF txee yog dav nyiam nyob rau hauv niaj hnub fais fab kev tswj systems.

 

3.2 Kev Ua Haujlwm Ntawm APF Txee

Wide Harmonic Filtering Range

• Ua kom muaj txiaj ntsig zoo ntawm kev sib haum xeeb los ntawm 2nd mus rau 61st kev txiav txim
• Adjustable harmonic filtering lub hom phiaj
• Txhawb kev kho kom haum xeeb cov tswv yim them nyiaj

 

Tiag -Lub Sijhawm Kev Txawj Ntse Nyiaj Txiag

• Dynamically taug qab load hloov
• Tsis siv neeg outputs rov qab them tam sim no
• Txhim kho lub zog ruaj khov tsis tu ncua

 

RS485 Kev sib txuas lus interface

• Txhawb kev saib xyuas tej thaj chaw deb thiab cov ntaub ntawv xa mus
• Tau tshaj cov kev tswj fais fab ntse
• Yooj yim rau kev ua haujlwm hauv nruab nrab thiab kev saib xyuas

 

Reactive Power Compensation Function

• Ua kom muaj kev sib haum xeeb lim dej ntawm nws tus kheej yam tsis ua rau lub zog reactive dhau - nyiaj pab
• Siv cov peev txheej ntxiv rau kev them nyiaj rov qab muaj zog
• Txhim kho qhov system fais fab los ntawm dynamic filtering

 

Txhim khohauvLub zog zoo thiab kev ntseeg tau ntawm qhov system

• Txo cov khoom siv overheating
• Extens kev pab cuam lub neej ntawm cov khoom siv hluav taws xob
• Lowers kab poob thiab kev siv zog
• Txhim khu kev nyab xeeb kev faib hluav taws xob tag nrho

 

Xaus

Raws li kev sib haum xeeb ua rau muaj kuab paug ntau zuj zus nyob rau niaj hnub kev lag luam thiab kev lag luam hluav taws xob, Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob (APF) tau dhau los ua cov tshuaj tseem ceeb rau kev sib haum xeeb thiab kev txhim kho lub zog.

 

Piv nrog rau cov lim dej tsis zoo, APF cov tshuab muab cov kev sib haum xeeb dav dav, cov lus teb nrawm dua, kev them nyiaj ntse ntse, thiab kev sib koom ua ke reactive lub zog them nyiaj ua haujlwm, ua rau lawv zoo tagnrho rau:

• Cov nroj tsuag muaj
• Cov tsev lag luam
• Cov chaw zov me nyuam
• Tsev kho mob
• Cov chaw tsim khoom ntse
• Renewable zog systems

 

Los ntawm kev txo qis kev sib raug zoo ntawm kev sib txawv thiab kev txhim kho lub zog, APF cov khoom pab kom muaj kev nyab xeeb dua, ruaj khov dua, thiab muaj zog ntau dua - ua haujlwm tau zoo