Raws li ib qho tseem ceeb ntawm cov khoom tseem ceeb hauv kev lag luam niaj hnub tswj kev lag luam, kev ua haujlwm ruaj khov ntawm cov zaus hloov pauv ncaj qha cuam tshuam rau kev tsim khoom thiab cov khoom siv lifespan. Txawm li cas los xij, hauv kev siv tswv yim, cov teeb meem overheating feem ntau tshwm sim, ua rau kev ua haujlwm tsis zoo ntawm qhov zoo tshaj plaws thiab cov khoom siv tsis zoo ntawm qhov phem tshaj. Kab lus no tau txheeb xyuas qhov ua rau, muaj kev phom sij, thiab cov kev daws teeb meem rau zaus hloov pauv overheating, muab cov tswv yim siv rau cov kws tshaj lij engineering.
I. Keeb Kwm Kev Ntsuam Xyuas ntawm VFD Overheating
1. Kev puas tsuaj sab hauv uas tsis muaj zog
Thaum lub sijhawm ua haujlwm, IGBT modules thiab siab - zaus hloov khoom siv hauv VFDs tsim kwv yees li 1.5%-3% hluav taws xob poob. Noj 55kW VFD ua piv txwv, tag nrho- kev ua haujlwm thauj khoom ua rau 825-1650W ntawm cov cua sov ib teev-sib npaug rau txuas ntxiv ua haujlwm ntau lub tshuab hluav taws xob. Kev poob qis thiab hloov pauv hauv cov rectifier thiab inverter units suav txog ntau dua 70% ntawm tag nrho cov tsim hluav taws xob. Tsis ua rau dissipate no cua sov tam sim ntawd ua rau module kub nce sharply.
2. Kev tsim kho cua sov tsis zoo
Qee cov VFDs hauv tsev tseem siv cov khoom siv hluav taws xob zoo li qub, uas muaj cov thermal conductivity coefficient tsuas yog 237 W / (m·K)- tsawg dua tooj liab 401 W / (m·K). Kev ntsuam xyuas ntawm ib lub npe tshwj xeeb tau qhia tias nyob rau ntawm 40℃ambient kub, cov khoom tseem ceeb uas siv cov txheej txheem cua sov mus txog 85 degree, thaum cov qauv siv tooj liab -aluminium composite heat sinks nyob rau hauv tib yam nkaus xwb mus txog 72℃. Tsis tas li ntawd, kev tsim cov pa cua tsis zoo tuaj yeem ua rau ntau dua 30% poob hauv kev ua kom sov dissipation.
3. Kev sib xyaw ua ke ntawm ib puag ncig
Hauv kev lag luam xws li textiles thiab metallurgy, thaum lub rooj cob qhia cov plua plav ntau tshaj 5mg / m³, VFD qhov cua txias tuaj yeem dhau 60% txhaws hauv ib lub lis piam. Ib txoj kev tshawb fawb ntawm cov cement cog tau qhia tias tom qab peb lub hlis ntawm kev ua haujlwm yam tsis muaj plua plav lim, cov plua plav sab hauv cov plua plav tau txo qhov ua kom txias txias los ntawm 45%, ua rau cov ntsuas kub nce los ntawm 28℃siab dua cov nqi pib.
II. Chain Reactions Triggered by Heat Generation
1. Component Lifespan Degradation
Rau txhua txhua 10℃qhov kub thiab txias, lub neej ntawm electrolytic capacitors txo los ntawm 50%. Thaum VFDs ua haujlwm tsis tu ncua saum 75 degree, MTBF (Lub Sijhawm Nruab Nrab Nruab Nrab Tsis Ua Haujlwm) ntawm cov capacitors sab hauv plummets los ntawm 100,000 teev mus rau 30,000 teev. Cov kab ntau lawm hauv tsheb tau ntsib qhov nce peb zaug hauv ib xyoos ib xyoos VFD hloov zaus vim muaj cua sov, nce nqi kho ib chav los ntawm ¥ 24,000 txhua xyoo.
2. Kev ua haujlwm tsis zoo
Tshaj li qhov ntsuas kub, IGBT conduction voltage poob nce 0.5% rau 1℃nce, ua rau poob ntxiv. Lub tshuab txhaj tshuaj moulding lub tshuab inverter tau ntsib 15% txo cov zis tam sim no ntawm 85 degree, ncaj qha ua rau tsis txaus clamping siab thiab nce cov khoom tsis raug rau 12%.
3. Kev Nyab Xeeb Kev Nyab Xeeb
ABB cov ntawv qhia kev qhia tau hais tias kev txhawb nqa lub zog ntsuas kub siab tshaj 90℃nrawm cov khoom siv rwb thaiv tsev laus los ntawm 10 zaug. Ib qho kev tshawb nrhiav rau xyoo 2024 chemical cog tawg tau qhia tias inverter overheating igniting ib puag ncig cables yog qhov ncaj qha ua rau muaj xwm txheej.
III. Kev daws teeb meem
1. Optimized Thermal Design
● Siv cov cua kub cua txias tshuab kom txo cov cua sov hauv qab 0.15℃/ W.
● Siv dej-txias tshuab rau siab- fais fab inverters (315kW+) kom ua tiav 5-8 npaug ntawm kev sib pauv cua sov dua li cua txias.
● Txhim kho airflow channel tsim kom ntseeg tau tias huab cua sib txawv sib txawv<15%.
2. Kev Tswj Xyuas Kub Ceev
● Nruab PT100 kub sensors rau ± 0.5℃precision xyuas.
● Tsim kom muaj kev hloov kho cua txias algorithms: cia li txo cov cab cab zaus 15% thaum kub tshaj 65 degree.
● Tom qab siv qhov kev saib xyuas kev kwv yees, lub tuam txhab steel txo VFD tsis ua hauj lwm tus nqi los ntawm 62%.
3. Ib puag ncig Adaptability Hloov Kho
● Nruab IP54-rated plua plav lim hauv qhov chaw muaj plua plav, nrog kev tu lub voj voog tsis pub dhau 2 lub lis piam.
● Pom zoo kom txhim kho airflow deflectors nyob rau hauv siab -rhiav kub kom ntseeg tau tias inlet cua kub tsawg dua los yog sib npaug li 40℃.
● Ib daim ntawv zeb stabilized VFD txee kub hauv qab 45℃los ntawm kev ntxiv cov pa tawm.
4. Kev Ua Haujlwm & Kev Tswj Xyuas Kev Txhim Kho Kev Txhim Kho
● Siv cov kev tshuaj ntsuam xyuas hluav taws xob infrared thermal, tsom mus rau qhov ntsuas kub ntawm qhov ntsuas qhov sib txawv (tus qauv Tsawg dua lossis sib npaug li 15 degree).
● Thaum siv cov roj thermal, xyuas kom cov txheej tuab yog tswj ntawm 0.1-0.15mm.
● Tsis tu ncua tshuaj xyuas cov kiv cua txias; hloov tam sim ntawd yog kev vibration tshaj 4.5mm/s.
IV. Kev Tsim Kho Technology Application Prospects
1. Theem hloov khoom txias
Kev soj ntsuam kuaj pom tau tias ua tiav qhov tseem ceeb ntawm cov inverters nrog paraffin -raws li cov ntaub ntawv hloov pauv tuaj yeem nqus tau 120 J / cm³ ntawm cov cua sov thaum lub sijhawm overloads, txo qhov kub ntawm qhov kub ntawm 40 degree.
2. Topology Innovation
Peb -theem topology txo qhov kev hloov pauv los ntawm 30%, thaum ANPC (Active Neutral Point Clamping) thev naus laus zis ntxiv tswj kev poob qis dua 50% ntawm cov qauv ib txwm muaj.
3. Digital Twin Early Warning
Qhov kev tsim khoom ntse tsim tau ib qho kev sib tw digital rau VFDs, kwv yees qhov kev pheej hmoo siab dhau 72 teev ua ntej nrog 89% qhov tseeb.
Hauv cov ntsiab lus, hais txog VFD cua sov yuav tsum muaj kev sib koom ua ke ntawm kev tsim, kev teeb tsa, thiab kev saib xyuas kev ua haujlwm thoob plaws tag nrho lub neej. Nrog rau kev siv dav dav ntawm silicon carbide (SiC) cov cuab yeej, yav tom ntej VFD poob tau kwv yees kom txo qis dua 60%. Cov lag luam raug qhia kom tsim kom muaj kev ntsuas ntsuas kub, sib xyaw ua ke kev tiv thaiv kev tiv thaiv nrog kev tsim kho thev naus laus zis los ua kom cov cuab yeej ruaj khov ua haujlwm. Kev xyaum qhia tau hais tias cov txheej txheem thermal tswj kev daws teeb meem tuaj yeem txhim kho VFDs 'kev siv hluav taws xob tag nrho los ntawm ntau dua 15% thiab txuas ntxiv cov cuab yeej siv los ntawm 3-5 xyoo, tuav cov tswv yim tseem ceeb rau kev ua tiav kev tsim khoom ntse thiab hloov kho dua tshiab.