Nyob rau hauv lub zog tshiab photovoltaic systems, lub zog cia converter (PCS) yog lub hauv paus tseem ceeb rau kev hloov pauv ntawm photovoltaic DC fais fab rau hauv daim phiaj AC fais fab. YMIN zaj duab xis capacitors, nrog rau lawv cov high voltage kuj, tsis tshua muaj poob, thiab lub neej ntev, yog cov khoom tseem ceeb rau kev txhim kho kev ua tau zoo ntawm photovoltaic PCS inverters, pab photovoltaic fais fab nroj tsuag ua tau zoo zog hloov dua siab tshiab thiab ruaj khov tso zis. Lawv cov haujlwm tseem ceeb thiab cov txiaj ntsig zoo yog raws li hauv qab no:
1. "Voltage Stabilization Shield" rau DC-Txuas
Thaum lub sij hawm AC-DC hloov dua siab tshiab cov txheej txheem nyob rau hauv photovoltaic PCS inverters, DC tsheb npav (DC-Txuas) yog raug rau siab pulse tam sim no thiab voltage spikes. YMIN zaj duab xis capacitors muab cov txiaj ntsig no los ntawm:
• High-Voltage Surge Absorption: Withstanding high voltages of 500V to 1500V (customizable), lawv nqus cov hluav taws xob tsis tu ncua uas tsim los ntawm IGBT/SiC keyboards, tiv thaiv cov khoom siv hluav taws xob los ntawm kev puas tsuaj.
• Tsis tshua muaj ESR Tam sim no Smoothing: Tsawg ESR (1/10 ntawm cov tsoos txhuas electrolytic capacitors) zoo absorbs high-frequency ripple tam sim no ntawm DC-Txuas, txo lub zog poob thiab txhim kho lub zog hloov pauv.
• Muaj Peev Xwm Muaj Peev Xwm Muaj Peev Xwm Muaj Peev Xwm Muaj Peev Xwm Muaj Peev Xwm: Ntau qhov muaj peev xwm tso cai rau kev them nyiaj sai thiab tso tawm thaum lub sijhawm hloov pauv hluav taws xob, tswj DC tsheb npav voltage ruaj khov thiab ua kom muaj kev ua haujlwm tsis tu ncua PCS.
2. Kev tiv thaiv dual ntawm qhov hluav taws xob siab tiv taus thiab qhov kub thiab txias
PV chaw nres tsheb fais fab feem ntau ntsib qhov chaw hnyav xws li kub thiab av noo. YMIN zaj duab xis capacitors ntsib cov kev cov nyom no los ntawm kev tsim tshiab:
• Kev ua haujlwm ruaj khov tshaj qhov kub ntawm qhov dav: Kev ua haujlwm kub npog -40 ° C txog 105 ° C, nrog lub peev xwm degradation tsawg dua 5% nyob rau hauv qhov chaw kub kub, tiv thaiv kev poob qis vim qhov kub thiab txias.
• Ripple Current Capacity: Ripple tam sim no tuav muaj peev xwm tshaj li 10 npaug ntawm cov tshuaj electrolytic capacitors, zoo lim suab nrov ntawm PV tso zis thiab ua kom cov kab sib txuas hluav taws xob zoo raws li lub teb chaws tus qauv.
• Lub neej ntev thiab kev tu-dawb: Nrog lub neej ntev txog li 100,000 teev, deb tshaj li ntawm 30,000-50,000 teev ntawm txhuas electrolytic capacitors, qhov no txo qis kev ua haujlwm thiab kev saib xyuas cov nqi ntawm photovoltaic fais fab nroj tsuag.
3. Synergy nrog SiC/IGBT Devices
Raws li cov tshuab photovoltaic hloov zuj zus mus rau qhov hluav taws xob ntau dua (1500V architectures dhau los), YMIN nyias-zaj duab xis capacitors tau sib sib zog nqus nrog cov tiam tom ntej lub zog semiconductors:
• High-Frequency Switching Support: Cov qauv tsim qis inductance sib phim rau cov yam ntxwv ntawm SiC MOSFETs (hloov zaus> 20kHz), txo cov khoom siv hluav taws xob tsis zoo thiab ua rau cov miniaturization ntawm PCS systems (ib qho 40kW system yuav tsum tsuas yog 8 capacitors, piv rau 22 rau cov tshuaj silicon).
• Txhim kho dv/dt Nrog: Txhim khu kev hloov pauv rau qhov hloov hluav taws xob, tiv thaiv voltage oscillations tshwm sim los ntawm kev hloov pauv ntau dhau hauv SiC cov khoom siv.
4. Qhov System-Level Tus Nqi: Kev Txhim Kho Kev Siv Hluav Taws Xob thiab Kev Ua Haujlwm Zoo
• Txhim Kho Kev Ua Tau Zoo: Cov qauv tsim ESR qis txo cov cua sov poob, txhawb nqa tag nrho PCS kev ua tau zoo thiab ua kom muaj zog ntau xyoo.
• Qhov Chaw Txuag: Kev tsim hluav taws xob siab ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom tsim 40% (40% me dua li cov khoom siv ib txwm siv) txhawb nqa cov khoom siv PCS compact thiab txo cov nqi installation.
Xaus
YMIN zaj duab xis capacitors, nrog lawv cov txiaj ntsig tseem ceeb ntawm kev ua siab ntev ntawm qhov siab, qhov kub tsis tshua muaj siab, thiab xoom kev saib xyuas, tau sib xyaw ua ke rau hauv cov ntsiab lus tseem ceeb ntawm photovoltaic PCS inverters, suav nrog DC-Link buffering, IGBT tiv thaiv, thiab kab sib haum xeeb lim. Lawv ua haujlwm ua "tus saib xyuas tsis pom" ntawm kev ua haujlwm tau zoo thiab ruaj khov hauv cov chaw tsim hluav taws xob photovoltaic. Lawv cov thev naus laus zis tsis yog tsuas yog tsav lub tshuab hluav taws xob photovoltaic cia rau "kev tu-dawb thoob plaws hauv lawv lub neej," tab sis kuj tseem pab txhawb kev lag luam hluav taws xob tshiab kom ua tiav cov phiaj xwm sib luag thiab xoom-carbon hloov.
Post lub sij hawm: Aug-14-2025