Encyclopedia Introduction rau hnub ci inverter

Inverter , tseem hu ua lub hwj chim regulator thiab lub hwj chim regulator, yog ib feem tseem ceeb ntawm lub photovoltaic system. Lub luag haujlwm tseem ceeb ntawm photovoltaic inverter yog hloov DC lub zog tsim los ntawm lub hnub ci vaj huam sib luag rau hauv AC lub zog siv los ntawm cov khoom siv hauv tsev. Tag nrho cov hluav taws xob tsim los ntawm lub hnub ci vaj huam sib luag yuav tsum tau ua tiav los ntawm lub inverter ua ntej nws tuaj yeem tso tawm rau lub ntiaj teb sab nraud. [1] Los ntawm lub voj voog tag nrho, SPWM processor feem ntau yog siv rau kev hloov kho, lim dej, kev txhawb nqa hluav taws xob, thiab lwm yam kom tau txais sinusoidal AC lub zog uas phim lub teeb pom kev zoo, ntsuas hluav taws xob, thiab lwm yam rau cov neeg siv kawg. Nrog lub inverter, DC roj teeb tuaj yeem siv los muab AC lub zog rau cov khoom siv.

Taw qhia:

Lub hnub ci AC lub zog tsim hluav taws xob yog tsim los ntawm cov hnub ci vaj huam sib luag, tus nqi tswj, inverter thiab roj teeb; lub hnub ci DC lub zog tsim hluav taws xob tsis suav nrog inverter. Cov txheej txheem ntawm kev hloov AC lub zog rau hauv DC lub zog yog hu ua rectification, lub voj voog uas ua tiav cov kev ua haujlwm rectification yog hu ua rectifier circuit, thiab cov cuab yeej siv cov txheej txheem rectification hu ua rectifier device lossis rectifier. Raws li qhov tshwm sim, cov txheej txheem ntawm kev hloov DC lub zog rau hauv AC lub zog yog hu ua inverter, lub voj voog uas ua tiav lub inverter muaj nuj nqi hu ua inverter Circuit Court, thiab cov cuab yeej uas siv cov txheej txheem inverter hu ua inverter khoom lossis inverter.

Lub hauv paus ntawm lub inverter ntaus ntawv yog lub inverter hloov Circuit Court, hu ua inverter Circuit Court. Qhov Circuit Court no ua kom tiav lub inverter muaj nuj nqi los ntawm kev qhib thiab tawm lub hwj chim hluav taws xob hloov. Kev hloov hluav taws xob hluav taws xob hloov khoom siv yuav tsum muaj qee yam tsav tsheb pulses, thiab cov pulses no yuav raug kho los ntawm kev hloov lub teeb liab voltage. Lub voj voog uas tsim thiab tswj cov pulses feem ntau hu ua lub voj voog tswj lossis tswj lub voj. Cov qauv yooj yim ntawm cov cuab yeej inverter suav nrog, ntxiv rau cov lus hais saum toj no hauv inverter Circuit Court thiab tswj Circuit Court, tiv thaiv Circuit Court, tso zis hluav taws xob, hluav taws xob input, hluav taws xob hluav taws xob, thiab lwm yam.

Nta:

Vim muaj ntau haiv neeg ntawm vaj tse, nws yuav inevitably ua rau muaj ntau haiv neeg ntawm solar vaj huam sib luag installation. Txhawm rau ua kom muaj txiaj ntsig zoo tshaj plaws ntawm kev hloov pauv ntawm lub hnub ci zog thaum coj mus rau hauv tus account qhov zoo nkauj ntawm lub tsev, qhov no yuav tsum muaj kev sib txawv ntawm peb cov inverters kom ua tiav txoj hauv kev zoo tshaj plaws ntawm lub hnub ci zog. Hloov.

Centralized inversion

Centralized inverter feem ntau yog siv rau hauv cov tshuab hluav taws xob photovoltaic loj (> 10kW). Ntau cov hlua photovoltaic txuas nrog rau DC cov tswv yim ntawm tib lub hauv nruab nrab inverter. Feem ntau, peb-theem IGBT fais fab modules yog siv rau lub zog siab. Cov me me siv teb cov nyhuv transistors thiab siv DSP hloov dua siab tshiab controllers los txhim kho qhov zoo ntawm lub zog generated kom nws nyob ze heev rau sine yoj tam sim no. Qhov loj tshaj feature yog lub zog siab thiab tus nqi qis ntawm qhov system. Txawm li cas los xij, qhov ua tau zoo thiab hluav taws xob tsim hluav taws xob muaj peev xwm ntawm tag nrho cov tshuab photovoltaic cuam tshuam los ntawm kev sib txuam ntawm cov hlua photovoltaic thiab ib nrab shading. Nyob rau tib lub sijhawm, lub zog tsim kev ntseeg tau ntawm tag nrho cov txheej txheem photovoltaic cuam tshuam los ntawm kev ua haujlwm tsis zoo ntawm qee pawg photovoltaic unit. Cov lus qhia kev tshawb fawb tshiab kawg yog kev siv qhov chaw vector modulation tswj thiab kev txhim kho ntawm cov tshiab inverter topology kev sib txuas kom tau txais kev ua haujlwm siab nyob rau hauv ib feem ntawm cov khoom thauj. Ntawm SolarMax centralized inverter, lub thawv photovoltaic array interface tuaj yeem txuas los saib xyuas txhua txoj hlua ntawm photovoltaic sail panels. Yog tias ib qho ntawm cov hlua tsis ua haujlwm zoo, lub kaw lus yuav xa cov ntaub ntawv xa mus rau cov chaw taws teeb tswj, thiab cov hlua no tuaj yeem nres los ntawm cov chaw taws teeb tswj, kom qhov tsis ua haujlwm ntawm ib txoj hlua photovoltaic yuav tsis txo lossis cuam tshuam rau kev ua haujlwm thiab lub zog tso tawm. ntawm tag nrho cov photovoltaic system.

Txoj hlua inverter

Txoj hlua inverters tau dhau los ua qhov nrov tshaj plaws inverters hauv kev lag luam thoob ntiaj teb. Txoj hlua inverter yog raws li lub tswv yim modular. Txhua txoj hlua photovoltaic (1kW-5kW) dhau los ntawm lub inverter, muaj lub zog siab tshaj plaws ntawm kev taug qab ntawm DC kawg, thiab txuas mus rau qhov sib npaug ntawm daim phiaj ntawm AC kawg. Ntau qhov loj photovoltaic fais fab nroj tsuag siv hlua inverters. Qhov zoo dua yog tias nws tsis cuam tshuam los ntawm qhov sib txawv ntawm qhov module thiab cov duab ntxoov ntxoo ntawm cov hlua, thiab tib lub sij hawm txo qhov pom kev ua haujlwm ntawm photovoltaic modules.

Tsis sib haum nrog lub inverter, yog li nce lub zog tsim. Cov kev ua tau zoo no tsis yog tsuas yog txo cov nqi hluav taws xob xwb, tab sis kuj ua rau muaj kev ntseeg siab ntxiv. Nyob rau tib lub sijhawm, lub tswv yim ntawm "tus tswv- qhev" tau qhia ntawm cov hlua, yog li thaum lub zog ntawm ib txoj hlua ib leeg hauv lub cev tsis tuaj yeem ua rau ib qho kev ua haujlwm inverter, ob peb pawg ntawm cov hlua photovoltaic tuaj yeem txuas ua ke kom tso cai rau ib qho lossis ob peb ntawm lawv mus ua haujlwm. , yog li tsim hluav taws xob ntau zog. Lub tswv yim tseeb yog tias ob peb lub inverters tsim "pab pawg" sib koom ua ke los hloov "tus tswv- qhev" lub tswv yim, ua rau lub kaw lus txhim khu kev qha.

Ntau txoj hlua inverter

Multi-string inverter siv qhov zoo ntawm centralized inverter thiab hlua inverter, zam lawv qhov tsis zoo, thiab tuaj yeem siv rau cov chaw nres tsheb photovoltaic nrog ob peb kilowatts. Nyob rau hauv lub multi-txheej inverter, sib txawv ib tug neeg lub hwj chim ncov mus txog qhovtwg thiab DC-rau-DC converters yog suav nrog. Lub DC hloov dua siab tshiab rau hauv AC zog los ntawm ib qho DC-rau-AC inverter thiab txuas nrog rau kab sib chaws. Cov kev ntsuas sib txawv ntawm cov hlua photovoltaic (xws li cov ntsuas hluav taws xob sib txawv, sib txawv ntawm cov modules ib txoj hlua, cov tuam txhab sib txawv ntawm cov modules, thiab lwm yam), ntau qhov sib txawv los yog sib txawv technologies ntawm photovoltaic modules, sib txawv orientations ntawm cov hlua (xws li: sab hnub tuaj, sab qab teb thiab sab hnub poob) , sib txawv qaij lub kaum sab xis los yog shading, tuaj yeem txuas nrog ib qho inverter, nrog rau txhua txoj hlua ua haujlwm ntawm lawv lub zog siab tshaj plaws. Nyob rau tib lub sijhawm, qhov ntev ntawm DC cable raug txo qis, txo qis cov duab ntxoov ntxoo ntawm cov hlua thiab qhov poob los ntawm qhov sib txawv ntawm cov hlua.

Cov khoom siv inverter

Lub module inverter txuas txhua lub photovoltaic module rau ib qho inverter, thiab txhua lub module muaj kev ywj siab siab tshaj plaws lub zog siab tshaj plaws nrhiav, kom lub module thiab lub inverter koom tes zoo dua. Feem ntau siv nyob rau hauv 50W mus rau 400W photovoltaic fais fab chaw nres tsheb, tag nrho cov efficiency yog qis dua cov hlua inverters. Txij li thaum lawv txuas mus rau qhov sib npaug ntawm AC sab, qhov no ua rau qhov nyuaj ntawm kev xaim ntawm AC sab thiab ua rau kev saib xyuas nyuaj. Lwm yam uas yuav tsum tau daws yog yuav ua li cas txuas rau kab sib chaws zoo dua. Txoj hauv kev yooj yim yog txuas mus rau kab sib chaws ncaj qha los ntawm cov qhov rooj AC zoo tib yam, uas tuaj yeem txo cov nqi thiab cov khoom siv, tab sis feem ntau cov qauv kev nyab xeeb ntawm daim phiaj hluav taws xob hauv ntau qhov chaw yuav tsis tso cai. Ua li no, lub tuam txhab hluav taws xob tuaj yeem tawm tsam qhov kev sib txuas ncaj qha ntawm lub tshuab tsim hluav taws xob rau lub qhov hluav taws xob hauv tsev. Lwm qhov cuam tshuam txog kev nyab xeeb yog seb puas yuav tsum tau hloov pauv hloov pauv (siab zaus lossis tsawg zaus) lossis seb qhov hloov pauv tsis muaj inverter tau tso cai. Qhov no inverter yog feem ntau siv nyob rau hauv iav ntaub thaiv phab ntsa.

Hnub ci Inverter Efficiency

Kev ua haujlwm ntawm hnub ci inverters hais txog kev lag luam loj hlob rau hnub ci inverters (photovoltaic inverters) vim qhov kev thov rau lub zog tauj dua tshiab. Thiab cov inverters no xav tau kev ua haujlwm siab thiab kev ntseeg siab. Cov hluav taws xob hluav taws xob siv hauv cov tshuab hluav taws xob no raug tshuaj xyuas thiab cov kev xaiv zoo tshaj plaws rau kev hloov thiab cov khoom siv rectifier tau pom zoo. Cov qauv dav dav ntawm photovoltaic inverter yog qhia hauv daim duab 1. Muaj peb qhov sib txawv inverters xaiv los ntawm. Lub hnub ci ci rau ntawm lub hnub ci modules txuas nrog hauv series, thiab txhua lub module muaj ib txheej ntawm lub hnub ci cell txuas nrog hauv series. Qhov ncaj qha tam sim no (DC) voltage generated los ntawm hnub ci modules yog nyob rau hauv qhov kev txiav txim ntawm ob peb puas volts, nyob ntawm seb lub teeb pom kev zoo ntawm lub module array, qhov kub thiab txias ntawm lub hlwb thiab cov xov tooj ntawm modules txuas nrog series.

Lub luag haujlwm tseem ceeb ntawm hom inverter no yog hloov cov input DC voltage rau hauv tus nqi ruaj khov. Qhov no muaj nuj nqi yog siv los ntawm ib tug boost converter thiab yuav tsum tau ib tug boost hloov thiab ib tug boost diode. Nyob rau hauv thawj architecture, lub boost theem yog ua raws li ib tug cais tag nrho-bridge converter. Lub hom phiaj ntawm tag nrho tus choj transformer yog muab kev sib cais. Qhov thib ob tag nrho-bridge converter ntawm cov zis yog siv los hloov DC los ntawm thawj-theem puv-bridge converter mus rau alternating tam sim no (AC) voltage. Nws cov zis yog lim ua ntej txuas nrog AC daim phiaj network los ntawm kev hloov pauv ob npaug ntxiv, txhawm rau muab kev sib cais muaj kev nyab xeeb nyob rau hauv qhov xwm txheej ntawm qhov ua txhaum thiab kev sib cais los ntawm daim phiaj xa khoom thaum hmo ntuj. Cov qauv thib ob yog cov txheej txheem tsis sib cais. Ntawm lawv, AC voltage yog ncaj qha generated los ntawm DC voltage tso zis los ntawm lub boost theem. Tus qauv thib peb siv lub thev naus laus zis thev naus laus zis ntawm cov hluav taws xob hloov hluav taws xob thiab lub zog diodes los ua ke cov haujlwm ntawm kev txhawb nqa thiab AC tiam qhov chaw nyob rau hauv ib qho kev mob siab rau topology, ua rau lub inverter ua tau zoo npaum li qhov ua tau txawm tias qhov kev hloov pauv qis heev ntawm lub hnub ci vaj huam sib luag. Ze li ntawm 100% tab sis tseem ceeb heev.Hauv lub teb chaws Yelemees, 3kW series module tau nruab rau ntawm lub ru tsev sab qab teb xav tias yuav tsim tau 2550 kWh ib xyoos twg. Yog hais tias lub inverter efficiency nce ntawm 95% mus rau 96%, ib qho ntxiv 25kWh ntawm hluav taws xob tuaj yeem tsim txhua xyoo. Tus nqi ntawm kev siv cov hnub ci ntxiv los tsim qhov 25kWh yog sib npaug rau kev ntxiv ib qho inverter. Txij li thaum nce efficiency ntawm 95% mus rau 96% yuav tsis muab ob npaug rau tus nqi ntawm lub inverter, kev nqis peev nyob rau hauv ib tug ntau npaum inverter yog ib qho kev xaiv inevitable. Rau cov kev tsim tawm tshiab, kev ua haujlwm ntawm inverter ua haujlwm zoo tshaj plaws yog qhov tseem ceeb tsim qauv. Raws li kev ntseeg tau thiab tus nqi ntawm lub inverter, lawv yog ob qho kev tsim qauv. Kev ua haujlwm siab dua txo qhov kub hloov pauv ntawm lub voj voog thauj khoom, yog li txhim kho kev ntseeg tau, yog li cov lus qhia no muaj feem xyuam nrog. Kev siv cov modules kuj yuav nce kev ntseeg tau.

Boost hloov thiab diode

Tag nrho cov topologies qhia xav tau ceev hloov hluav taws xob hloov pauv. Lub boost theem thiab tag nrho-bridge conversion theem yuav tsum ceev switching diodes. Tsis tas li ntawd, cov keyboards optimized rau tsawg zaus (100Hz) hloov pauv kuj tseem muaj txiaj ntsig zoo rau cov topologies no. Rau ib qho kev siv thev naus laus zis silicon, cov keyboards optimized rau kev hloov pauv ceev yuav muaj kev cuam tshuam ntau dua li cov keyboards optimized rau tsawg zaus hloov daim ntawv thov.

Lub boost theem feem ntau yog tsim los ua ib tug nruam tam sim no converter. Nyob ntawm seb muaj pes tsawg hnub ci modules nyob rau hauv array siv nyob rau hauv lub inverter, koj muaj peev xwm xaiv seb yuav siv 600V los yog 1200V li. Ob txoj kev xaiv rau lub zog hloov pauv yog MOSFETs thiab IGBTs. Feem ntau hais lus, MOSFETs tuaj yeem ua haujlwm ntawm kev hloov pauv ntau dua li IGBTs. Tsis tas li ntawd, lub zog ntawm lub cev diode yuav tsum nco ntsoov coj mus rau hauv tus account: nyob rau hauv cov ntaub ntawv ntawm boost theem no tsis yog ib qho teeb meem vim lub cev diode tsis coj nyob rau hauv ib txwm ua hauj lwm hom. MOSFET conduction poob tuaj yeem xam los ntawm kev tiv thaiv RDS (ON), uas yog sib npaug rau qhov chaw tuag zoo rau tsev neeg MOSFET. Thaum lub ntsuas hluav taws xob hloov pauv ntawm 600V mus rau 1200V, qhov kev poob qis ntawm MOSFET yuav nce siab heev. Yog li ntawd, txawm tias qhov ntsuas RDS (ON) sib npaug, 1200V MOSFET tsis muaj lossis tus nqi siab dhau.

Rau boost keyboards ntsuas ntawm 600V, superjunction MOSFETs tuaj yeem siv. Rau high-frequency switching daim ntaub ntawv, qhov no technology muaj qhov zoo tshaj plaws conduction poob. MOSFETs nrog RDS(ON) qhov tseem ceeb hauv qab 100 milliohms hauv TO-220 pob khoom thiab MOSFETs nrog RDS(ON) tus nqi qis dua 50 milliohms hauv TO-247 pob. Rau hnub ci inverters xav tau 1200V fais fab hloov, IGBT yog qhov kev xaiv tsim nyog. Cov thev naus laus zis IGBT ntau dua, xws li NPT Trench thiab NPT Field Stop, tau ua kom zoo rau kev txo qis kev ua haujlwm, tab sis ntawm cov nqi ntawm kev hloov pauv ntau dua, uas ua rau lawv tsis tsim nyog rau kev txhawb nqa cov ntawv thov ntawm ntau zaus.

Raws li cov qub NPT planar technology, ib lub cuab yeej FGL40N120AND tau tsim los uas tuaj yeem txhim kho qhov ua tau zoo ntawm kev txhawb nqa Circuit Court nrog siab hloov zaus. Nws muaj EOFF ntawm 43uJ/A. Piv nrog rau cov cuab yeej siv thev naus laus zis ntau dua, EOFF yog 80uJ / A, tab sis nws yuav tsum tau txais qhov kev ua tau zoo no nyuaj heev. Qhov tsis zoo ntawm FGL40N120AND ntaus ntawv yog tias qhov saturation voltage poob VCE (SAT) (3.0V vs. 2.1V ntawm 125ºC) yog siab, tab sis nws qhov kev hloov qis qis ntawm kev hloov pauv ntau zaus ntau dua li qhov no. Cov cuab yeej kuj koom ua ke ib qho kev tiv thaiv kev sib luag. Nyob rau hauv ib txwm boost ua hauj lwm, no diode yuav tsis ua. Txawm li cas los xij, thaum pib lossis thaum lub sijhawm hloov pauv, nws muaj peev xwm ua rau lub zog hluav taws xob tau tsav mus rau hauv hom kev ua haujlwm, nyob rau hauv rooj plaub uas lub diode anti-parallel yuav ua. Txij li thaum IGBT nws tus kheej tsis muaj lub cev diode hauv lub cev, qhov sib koom ua ke diode no yuav tsum tau ua kom ntseeg tau tias kev ua haujlwm ruaj khov. Rau boost diodes, ceev rov qab diodes xws li Stealth ™ los yog carbon silicon diodes yuav tsum.Carbon-silicon diodes muaj tsawg heev rau pem hauv ntej voltage thiab poob. Thaum xaiv lub boost diode, cov nyhuv ntawm qhov rov qab rov qab tam sim no (los yog kev sib txuas ntawm cov pa roj carbon-silicon diode) ntawm qhov hloov pauv yuav tsum tau txiav txim siab, vim qhov no yuav ua rau poob ntxiv. Ntawm no, tus tshiab Stealth II diode FFP08S60S tuaj yeem muab kev ua tau zoo dua. Thaum VDD = 390V, ID = 8A, di / dt = 200A / peb, thiab cov ntaub ntawv kub yog 100ºC, qhov kev suav hloov poob qis dua FFP08S60S parameter ntawm 205mJ. Siv ISL9R860P2 Stealth diode, tus nqi no nce mus txog 225mJ. Yog li ntawd, qhov no kuj txhim kho qhov ua tau zoo ntawm lub inverter ntawm kev hloov pauv ntau zaus.

Choj keyboards thiab diodes

Tom qab MOSFET tag nrho-bridge filtering, tus choj tso zis tsim tawm 50Hz sinusoidal voltage thiab tam sim no teeb liab. Ib qho kev siv feem ntau yog siv tus txheej txheem puv choj architecture (Daim duab 2). Nyob rau hauv daim duab, yog tias cov keyboards ntawm sab laug thiab sab xis yog qhib, qhov zoo voltage yog loaded ntawm sab laug thiab sab xis terminals; Yog hais tias lub keyboards ntawm sab xis thiab sab laug yog qhib, ib tug tsis zoo voltage yog loaded ntawm sab laug thiab txoj cai terminals. Rau daim ntawv thov no, tsuas yog ib qho kev hloov pauv yog nyob rau lub sijhawm qee lub sijhawm. Ib qho kev hloov pauv tuaj yeem hloov mus rau PWM siab zaus thiab lwm qhov hloov mus rau qis zaus 50Hz. Txij li thaum lub bootstrap Circuit Court cia siab rau kev hloov pauv ntawm cov khoom siv qis kawg, cov khoom siv qis kawg tau hloov mus rau PWM siab zaus, thaum cov khoom siv high-end hloov mus rau 50Hz tsawg zaus. Daim ntawv thov no siv lub zog hloov hluav taws xob 600V, yog li 600V superjunction MOSFET yog qhov tsim nyog rau cov cuab yeej hloov hluav taws xob no. Vim tias cov khoom siv hloov pauv no yuav tiv taus qhov rov qab rov qab tam sim no ntawm lwm yam khoom siv thaum hloov pauv, ceev ceev rov qab cov khoom siv xws li 600V FCH47N60F yog qhov kev xaiv zoo tshaj. Nws RDS (ON) yog 73 milliohms, thiab nws cov conduction poob qis heev piv rau lwm cov khoom siv ceev ceev zoo sib xws. Thaum cov cuab yeej no hloov pauv ntawm 50Hz, tsis tas yuav siv lub nrawm nrawm. Cov khoom siv no muaj cov yam ntxwv zoo dv / dt thiab di / dt, uas txhim kho kev ntseeg tau zoo piv rau cov qauv superjunction MOSFETs.

Lwm qhov kev xaiv tsim nyog tshawb nrhiav yog kev siv FGH30N60LSD ntaus ntawv. Nws yog 30A / 600V IGBT nrog saturation voltage VCE (SAT) tsuas yog 1.1V. Nws qhov kev poob qis EOFF yog siab heev, ncav cuag 10mJ, yog li nws tsuas yog tsim nyog rau kev hloov pauv tsawg zaus. Ib qho 50 milliohm MOSFET muaj qhov tsis kam RDS (ON) ntawm 100 milliohms ntawm kev ua haujlwm kub. Yog li, ntawm 11A, nws muaj VDS tib yam li VCE (SAT) ntawm IGBT. Txij li thaum IGBT no yog raws li cov cuab yeej siv qub qub, VCE (SAT) tsis hloov pauv ntau nrog qhov kub thiab txias. Qhov IGBT no thiaj li txo qhov kev poob tag nrho hauv cov khoom siv hluav taws xob, yog li ua kom muaj txiaj ntsig tag nrho ntawm inverter. Qhov tseeb tias FGH30N60LSD IGBT hloov los ntawm ib lub zog hloov tshuab mus rau lwm qhov kev mob siab rau txhua lub voj voog ib nrab kuj tseem siv tau. IGBTs yog siv los ua cov keyboards topological. Rau kev hloov pauv sai dua, cov khoom siv zoo sib xws thiab ceev ceev rov qab siv tau. Rau 1200V nplooj siab topology thiab tag nrho-choj qauv, cov lus hais saum toj no FGL40N120AND yog ib qho kev hloov uas tsim nyog rau cov tshiab hnub ci inverters. Thaum cov thev naus laus zis tshwj xeeb xav tau diodes, Stealth II, Hyperfast ™ II diodes thiab carbon-silicon diodes yog cov kev daws teeb meem zoo.

muaj nuj nqi:

Lub inverter tsis tsuas yog muaj kev ua haujlwm ntawm DC rau AC hloov dua siab tshiab, tab sis kuj muaj kev ua haujlwm ntawm kev ua haujlwm siab tshaj plaws ntawm lub hnub ci hlwb thiab kev ua haujlwm ntawm kev tiv thaiv kev tiv thaiv. Hauv cov ntsiab lus, muaj cov haujlwm tsis siv neeg khiav thiab kaw, qhov siab tshaj plaws kev tswj xyuas lub zog, kev ua haujlwm ywj pheej tiv thaiv kev ua haujlwm (rau kab sib txuas nrog), tsis siv neeg hloov hluav taws xob hloov ua haujlwm (rau kab sib txuas sib txuas), DC nrhiav pom muaj nuj nqi (rau kab sib txuas sib txuas. ), thiab DC av nrhiav pom. Muaj nuj nqi (rau kab sib txuas-txuas systems). Ntawm no yog cov lus qhia luv luv rau kev khiav haujlwm tsis siv neeg thiab kaw haujlwm thiab lub zog siab tshaj plaws nrhiav kev tswj hwm muaj nuj nqi.

Kev ua haujlwm tsis siv neeg thiab kev kaw haujlwm: Tom qab hnub tuaj txog thaum sawv ntxov, qhov kev siv ntawm lub hnub ci hluav taws xob maj mam nce, thiab cov zis ntawm lub hnub ci cell kuj nce. Thaum cov zis hluav taws xob xav tau rau kev ua haujlwm inverter mus txog, lub inverter cia li pib khiav. Tom qab nkag mus rau hauv lub lag luam, lub inverter yuav saib xyuas cov zis ntawm lub hnub ci cell modules txhua lub sijhawm. Ntev npaum li qhov tso zis hluav taws xob ntawm lub hnub ci cell modules ntau dua li cov zis hluav taws xob xav tau rau kev ua haujlwm inverter, lub inverter yuav ua haujlwm ntxiv; nws yuav nres kom txog thaum hnub poob, txawm tias Lub inverter tuaj yeem ua haujlwm rau hnub los nag. Thaum lub hnub ci module tso zis me me thiab lub inverter tso zis mus txog 0, lub inverter nkag mus rau hauv lub xeev standby.

Kev tswj xyuas lub zog siab tshaj plaws: Cov zis ntawm lub hnub ci cell module hloov nrog kev siv ntawm lub hnub ci hluav taws xob thiab qhov kub ntawm lub hnub ci cell module nws tus kheej (chip kub). Tsis tas li ntawd, vim hais tias lub hnub ci cell modules muaj cov yam ntxwv uas voltage txo qis raws li tam sim no nce, muaj qhov pom kev ua haujlwm zoo uas tuaj yeem tau txais lub zog siab tshaj plaws. Kev siv hluav taws xob hnub ci hloov pauv, thiab pom tseeb tias qhov ua haujlwm zoo tshaj plaws kuj hloov pauv. Hais txog cov kev hloov no, qhov chaw ua hauj lwm ntawm lub hnub ci cell module yog ib txwm khaws cia ntawm qhov siab tshaj plaws lub zog taw tes, thiab lub kaw lus ib txwm tau txais lub zog siab tshaj plaws ntawm lub hnub ci module. Hom kev tswj no yog qhov siab tshaj plaws kev tswj xyuas lub zog. Qhov loj tshaj plaws ntawm inverters siv nyob rau hauv lub hnub ci zog tsim tshuab yog tias lawv suav nrog lub siab tshaj plaws lub zog taw tes nrhiav (MPPT) muaj nuj nqi.

hom

Daim ntawv thov Scope Classification

(1) Ordinary inverter

DC 12V lossis 24V input, AC 220V, 50Hz tso zis, lub zog ntawm 75W txog 5000W, qee cov qauv muaj AC thiab DC hloov dua siab tshiab, uas yog, UPS muaj nuj nqi.

(2) Inverter / charger tag nrho-hauv-ib tshuab

Hauv hom inverter no, cov neeg siv tuaj yeem siv ntau hom kev siv hluav taws xob rau lub zog AC loads: thaum muaj AC lub zog, lub zog AC siv los ua lub zog thauj khoom los ntawm inverter, lossis kom them lub roj teeb; Thaum tsis muaj hluav taws xob AC, lub roj teeb yog siv los ua lub zog AC load. . Nws tuaj yeem siv ua ke nrog ntau yam khoom siv hluav taws xob: roj teeb, generators, hnub ci vaj huam sib luag thiab cua turbines.

(3) Tshwj xeeb inverter rau kev xa ntawv thiab kev sib txuas lus

Muab cov khoom zoo 48V inverters rau kev xa ntawv thiab kev sib txuas lus. Cov khoom lag luam yog cov khoom zoo, kev ntseeg siab, kev hloov pauv (module yog 1KW) inverters, thiab muaj N + 1 redundancy muaj nuj nqi thiab tuaj yeem nthuav dav (lub zog ntawm 2KW txog 20KW). ).

(4) Tshwj xeeb inverter rau aviation thiab tub rog

Hom inverter no muaj 28Vdc input thiab muab tau cov nram qab no AC outputs: 26Vac, 115Vac, 230Vac. Nws cov zis zaus tuaj yeem yog: 50Hz, 60Hz thiab 400Hz, thiab cov zis hluav taws xob ntau ntawm 30VA txog 3500VA. Kuj tseem muaj DC-DC converters thiab zaus converters rau aviation.

Kev faib tawm waveform

(1) Square wave inverter

AC voltage waveform tso zis los ntawm square yoj inverter yog ib tug square yoj. Lub inverter circuits siv los ntawm hom inverter no tsis zoo ib yam, tab sis qhov tshwm sim yog qhov Circuit Court yog qhov yooj yim thiab tus naj npawb ntawm lub hwj chim hloov raj siv me me. Lub zog tsim yog feem ntau ntawm ib puas watts thiab ib kilowatt. Qhov zoo ntawm square yoj inverter yog: yooj yim Circuit Court, pheej yig tus nqi thiab kho yooj yim. Qhov tsis zoo yog qhov square yoj voltage muaj ntau qhov kev txiav txim siab sib haum xeeb, uas yuav ua rau poob ntxiv hauv cov khoom siv thauj khoom nrog cov tub ntxhais hlau inductors lossis transformers, ua rau muaj kev cuam tshuam rau xov tooj cua thiab qee yam khoom siv sib txuas lus. Tsis tas li ntawd, hom inverter no muaj qhov tsis zoo xws li kev tswj hwm qhov hluav taws xob tsis txaus, kev tiv thaiv tsis tiav, thiab lub suab nrov.

(2) kauj ruam yoj inverter

AC voltage waveform tso zis los ntawm hom inverter no yog ib kauj ruam nthwv dej. Muaj ntau ntau cov kab sib txawv rau lub inverter kom paub cov kauj ruam yoj tawm, thiab tus naj npawb ntawm cov kauj ruam hauv cov zis waveform sib txawv heev. Qhov kom zoo dua ntawm cov kauj ruam yoj inverter yog tias cov zis waveform yog qhov zoo dua piv rau cov square nthwv dej, thiab cov ntsiab lus siab sib haum xeeb raug txo. Thaum cov kauj ruam mus txog ntau tshaj 17, cov zis waveform tuaj yeem ua tiav quasi-sinusoidal yoj. Thaum transformerless tso zis yog siv, tag nrho efficiency yog siab heev. Qhov tsis zoo yog tias tus ntaiv nthwv dej superposition circuit siv ntau lub zog hloov cov raj, thiab qee cov ntawv hauv Circuit Court yuav tsum muaj ntau yam ntawm DC fais fab inputs. Qhov no ua rau muaj teeb meem rau kev sib koom ua ke thiab xaim ntawm lub hnub ci cell arrays thiab kev sib npaug ntawm cov roj teeb. Tsis tas li ntawd, lub staircase yoj voltage tseem muaj qee qhov kev cuam tshuam rau cov xov tooj cua thiab qee cov khoom siv sib txuas lus.

Sine wave inverter

AC voltage waveform tso zis los ntawm sine yoj inverter yog sine yoj. Qhov zoo ntawm sine yoj inverter yog tias nws muaj qhov tso zis waveform zoo, tsis tshua muaj kev cuam tshuam, cuam tshuam me me rau xov tooj cua thiab khoom siv, thiab suab nrov tsawg. Tsis tas li ntawd, nws muaj kev tiv thaiv ua tiav thiab kev ua haujlwm siab tag nrho. Qhov tsis zoo yog: lub voj voog yog qhov nyuaj, yuav tsum tau siv tshuab ua haujlwm siab, thiab kim heev.

Kev faib tawm ntawm peb hom inverters saum toj no yuav pab tau rau cov neeg tsim qauv thiab cov neeg siv cov tshuab photovoltaic thiab cua tshuab hluav taws xob los txheeb xyuas thiab xaiv cov inverter. Qhov tseeb, inverters nrog tib lub waveform tseem muaj qhov sib txawv ntawm cov qauv hauv Circuit Court, cov cuab yeej siv, kev tswj hwm, thiab lwm yam.

Lwm yam kev faib tawm

1. Raws li qhov zaus ntawm cov zis AC lub zog, nws tuaj yeem muab faib ua lub zog zaus inverter, nruab nrab zaus inverter thiab siab zaus inverter. Qhov zaus ntawm lub zog zaus inverter yog 50 txog 60Hz; qhov zaus ntawm nruab nrab zaus inverter feem ntau yog 400Hz txog ntau tshaj kaum kHz; Qhov zaus ntawm cov zaus inverter feem ntau yog ntau tshaj kaum kHz rau MHz.

2. Raws li tus naj npawb ntawm cov theem tso zis los ntawm inverter, nws tuaj yeem muab faib ua ib theem inverter, peb theem inverter thiab ntau theem inverter.

3. Raws li lub hom phiaj ntawm lub inverter lub zog tso zis, nws yuav muab faib ua active inverter thiab passive inverter. Txhua lub inverter uas xa cov hluav taws xob hluav taws xob tawm los ntawm lub inverter mus rau lub zog hluav taws xob muaj npe hu ua active inverter; ib qho inverter uas xa cov hluav taws xob hluav taws xob tawm los ntawm lub inverter rau qee qhov hluav taws xob hluav taws xob yog hu ua passive inverter. ntaus ntawv.

4. Raws li daim ntawv ntawm inverter lub ntsiab Circuit Court, nws muaj peev xwm muab faib ua ib leeg-kawg inverter, thawb-rub inverter, ib nrab-bridge inverter thiab tag nrho-bridge inverter.

5. Raws li hom kev hloov pauv tseem ceeb ntawm lub inverter, nws tuaj yeem muab faib ua thyristor inverter, transistor inverter, teb nyhuv inverter thiab insulated rooj vag bipolar transistor (IGBT) inverter. Nws tuaj yeem muab faib ua ob pawg: "semi-tswj" inverter thiab "tag nrho tswj" inverter. Tus qub tsis muaj peev xwm tig tawm tus kheej, thiab cov khoom tiv thaiv poob nws cov kev tswj hwm tom qab nws tau qhib, yog li nws yog hu ua "semi-tswj" thiab cov thyristors zoo tib yam poob rau hauv pawg no; tom kawg muaj peev xwm tig tawm tus kheej, uas yog, tsis muaj lub cuab yeej Lub rau thiab tawm tuaj yeem tswj tau los ntawm kev tswj cov electrode, yog li nws yog hu ua "tag nrho tswj hom". Fais fab teb cov nyhuv transistors thiab insulated gate bi-power transistors (IGBT) tag nrho cov nyob rau hauv qeb no.

6. Raws li DC fais fab mov, nws tuaj yeem muab faib ua qhov voltage qhov inverter (VSI) thiab tam sim no qhov chaw inverter (CSI). Nyob rau hauv lub qub, lub DC voltage yog ze li ntawm tas li, thiab cov zis voltage yog ib tug alternating square nthwv dej; Nyob rau tom kawg, DC tam sim no yuav luag tas li, thiab cov zis tam sim no yog qhov hloov pauv square nthwv dej.

7. Raws li txoj kev tswj inverter, nws tuaj yeem muab faib ua zaus hloov pauv (PFM) inverter thiab mem tes dav hloov pauv (PWM) inverter.

8. Raws li kev ua haujlwm ntawm inverter switching circuit, nws tuaj yeem muab faib ua resonant inverter, ruaj khov zaus hloov inverter thiab tsau zaus mos hloov inverter.

9. Raws li txoj kev commutation ntawm lub inverter, nws yuav muab faib ua load-commutated inverter thiab nws tus kheej-commutated inverter.

Performance Parameters:

Muaj ntau yam tsis zoo thiab cov txheej txheem kev qhia txog kev ua haujlwm ntawm lub inverter. Ntawm no peb tsuas yog muab cov lus piav qhia luv luv ntawm cov txheej txheem kev siv feem ntau thaum ntsuas cov inverter.

1. Ib puag ncig tej yam kev mob rau kev siv lub inverter. Kev siv ib txwm siv ntawm lub inverter: qhov siab tsis tshaj 1000m, thiab huab cua kub yog 0 ~ + 40 ℃.

2. DC input fais fab mov tej yam kev mob, input DC voltage fluctuation ntau yam: ± 15% ntawm qhov ntsuas voltage tus nqi ntawm lub roj teeb pob.

3. Rated tso zis voltage, nyob rau hauv lub tso cai hloov pauv ntau yam ntawm cov input DC voltage, nws sawv cev rau tus nqi voltage rated uas lub inverter yuav tsum tau tso zis. Qhov tseeb ruaj khov ntawm qhov tso zis ntsuas hluav taws xob feem ntau muaj cov kev cai hauv qab no:

(1) Thaum lub sijhawm ua haujlwm ruaj khov, qhov hloov pauv ntawm qhov voltage yuav tsum raug txwv, piv txwv li, nws qhov sib txawv yuav tsum tsis pub tshaj ± 3% lossis ± 5% ntawm tus nqi ntsuas.

(2) Nyob rau hauv cov xwm txheej dynamic uas lub load hloov dheev los yog cuam tshuam los ntawm lwm yam cuam tshuam, qhov tso zis voltage sib txawv yuav tsum tsis pub tshaj ± 8% lossis ± 10% ntawm tus nqi ntsuas.

4. Rated tso zis zaus, zaus ntawm inverter tso zis AC voltage yuav tsum yog tus nqi ruaj khov, feem ntau lub zog zaus ntawm 50Hz. Qhov sib txawv yuav tsum tsis pub dhau ± 1% raws li kev ua haujlwm ib txwm muaj.

5. Rated tso zis tam sim no (los yog rated tso zis muaj peev xwm) qhia cov rated tso zis tam sim no ntawm lub inverter nyob rau hauv lub teev load hwj chim yam ntau yam. Qee cov khoom lag luam inverter muab cov peev txheej tso tawm, qhia hauv VA lossis kVA. Lub peev xwm ntsuas ntawm lub inverter yog thaum qhov tso zis hluav taws xob yog 1 (uas yog, cov khoom siv hluav taws xob nkaus xwb), qhov ntsuas cov zis hluav taws xob yog cov khoom ntawm cov khoom tso tawm tam sim no.

6. Rated tso zis efficiency. Qhov ua tau zoo ntawm lub inverter yog qhov piv ntawm nws cov zis hluav taws xob rau lub zog hluav taws xob nyob rau hauv cov kev ua haujlwm tau teev tseg, qhia hauv %. Kev ua haujlwm ntawm lub inverter ntawm cov zis muaj peev xwm yog tag nrho cov kev ua haujlwm, thiab qhov ua tau zoo ntawm 10% ntawm cov zis muaj peev xwm yog qhov ua haujlwm qis.

7. Qhov siab tshaj plaws harmonic cov ntsiab lus ntawm lub inverter. Rau lub sine yoj inverter, nyob rau hauv resistive load, lub siab tshaj plaws harmonic cov ntsiab lus ntawm cov zis voltage yuav tsum yog ≤10%.

8. Lub peev xwm overload ntawm lub inverter yog hais txog lub peev xwm ntawm lub inverter kom tso zis ntau tshaj qhov ntsuas tam sim no tus nqi nyob rau lub sij hawm luv luv raws li cov xwm txheej. Lub peev xwm overload ntawm lub inverter yuav tsum ua tau raws li qee qhov yuav tsum tau ua raws li qhov teev tseg ntawm lub zog hluav taws xob.

9. Qhov ua tau zoo ntawm lub inverter yog qhov piv ntawm inverter tso zis active zog rau lub input active zog (los yog DC zog) nyob rau hauv lub rated tso zis voltage, tso zis tam sim no thiab teev load zog yam tseem ceeb.

10. Load power factor sawv cev rau inverter lub peev xwm nqa inductive lossis capacitive loads. Nyob rau hauv sine yoj tej yam kev mob, lub load hwj chim yam yog 0.7 ~ 0.9 (lag), thiab tus nqi ntsuas yog 0.9.

11. Load asymmetry. Nyob rau hauv 10% asymmetric load, asymmetry ntawm cov zis voltage ntawm ib tug taag zaus peb-theem inverter yuav tsum ≤10%.

12. Cov zis voltage imbalance. Nyob rau hauv ib txwm ua haujlwm, peb-theem voltage imbalance (qhov sib piv ntawm qhov rov qab ib ntus rau qhov zoo ib ntus tivthaiv) tso tawm los ntawm inverter yuav tsum tsis pub tshaj tus nqi teev, feem ntau qhia hauv %, xws li 5% lossis 8%.

13. Pib yam ntxwv: Nyob rau hauv ib txwm ua hauj lwm tej yam kev mob, lub inverter yuav tsum muaj peev xwm pib ib txwm 5 zaug nyob rau hauv ib tug kab nyob rau hauv tag nrho cov load thiab tsis muaj-load hauj lwm tej yam kev mob.

14. Kev tiv thaiv kev ua haujlwm, lub inverter yuav tsum tau teeb tsa: kev tiv thaiv luv luv Circuit Court, tiv thaiv overcurrent, tiv thaiv overtemperature, tiv thaiv overvoltage, tiv thaiv undervoltage thiab tiv thaiv theem poob. Ntawm lawv, kev tiv thaiv overvoltage txhais tau hais tias rau inverters tsis muaj qhov ntsuas hluav taws xob ruaj khov, yuav tsum muaj cov khoom siv hluav taws xob tiv thaiv kev tiv thaiv los tiv thaiv lub davhlau ya nyob twg tsis zoo los ntawm kev puas tsuaj los ntawm cov zis overvoltage. Kev tiv thaiv overcurrent hais txog kev tiv thaiv overcurrent ntawm lub inverter, uas yuav tsum muaj peev xwm ua kom lub sijhawm ua haujlwm thaum lub sijhawm thauj khoom luv luv lossis tam sim no tshaj qhov tso cai los tiv thaiv nws los ntawm kev puas tsuaj los ntawm surge tam sim no.

15. Kev cuam tshuam thiab tiv thaiv kev cuam tshuam, lub inverter yuav tsum muaj peev xwm tiv thaiv electromagnetic cuam tshuam nyob rau hauv ib puag ncig nyob rau hauv ib txwm ua hauj lwm tej yam kev mob. Kev tiv thaiv kev cuam tshuam kev ua haujlwm thiab electromagnetic compatibility ntawm lub inverter yuav tsum ua raws li cov qauv tsim nyog.

16. Inverters uas tsis nquag ua haujlwm, saib xyuas thiab tswj xyuas yuav tsum yog ≤95db; inverters uas nquag ua haujlwm, saib xyuas thiab tswj xyuas yuav tsum yog ≤80db.

17. Zaub, lub inverter yuav tsum tau nruab nrog cov ntaub ntawv tso saib ntawm cov tsis xws li AC tso zis voltage, tso zis tam sim no thiab tso zis zaus, thiab teeb liab tso saib ntawm input nyob, energized thiab txhaum raws li txoj cai.

18. Kev sib txuas lus muaj nuj nqi. Cov kev sib txuas lus tej thaj chaw deb tso cai rau cov neeg siv tshawb xyuas lub tshuab ua haujlwm thiab khaws cov ntaub ntawv yam tsis tau mus rau ntawm qhov chaw.

19. Lub waveform distortion ntawm cov zis voltage. Thaum lub inverter tso zis voltage yog sinusoidal, qhov siab tshaj plaws tso cai waveform distortion (los yog harmonic cov ntsiab lus) yuav tsum tau teev. Feem ntau qhia raws li tag nrho waveform distortion ntawm cov zis voltage, nws tus nqi yuav tsum tsis txhob ntau tshaj 5% (10% tso cai rau ib-theem tso zis).

20. Pib yam ntxwv, uas characterize lub inverter lub peev xwm pib nrog load thiab nws cov kev ua tau zoo thaum lub sij hawm ua hauj lwm dynamic. Lub inverter yuav tsum xyuas kom ntseeg tau pib nyob rau hauv rated load.

21. Suab nrov. Transformers, lim inductors, hluav taws xob hloov hluav taws xob, kiv cua thiab lwm yam khoom siv hauv cov khoom siv hluav taws xob hluav taws xob tag nrho ua suab nrov. Thaum lub inverter ua haujlwm ib txwm, nws lub suab nrov yuav tsum tsis pub tshaj 80dB, thiab lub suab nrov ntawm lub inverter me me yuav tsum tsis pub tshaj 65dB.

Roj teeb yam ntxwv:

PV roj teeb

Txhawm rau tsim lub hnub ci inverter, nws yog ib qho tseem ceeb ua ntej nkag siab txog cov yam ntxwv sib txawv ntawm lub hnub ci hlwb (PV hlwb). Rp thiab Rs yog cov kab mob parasitic, uas yog infinite thiab xoom raws li qhov zoo tagnrho.

Lub teeb siv thiab kub tuaj yeem cuam tshuam rau kev ua haujlwm ntawm PV hlwb. Qhov tam sim no yog proportional rau lub teeb siv, tab sis kev hloov hauv lub teeb muaj me ntsis cuam tshuam rau kev khiav hauj lwm voltage. Txawm li cas los xij, kev khiav hauj lwm voltage cuam tshuam los ntawm qhov kub thiab txias. Kev nce hauv roj teeb kub txo qhov kev khiav hauj lwm voltage tab sis muaj me ntsis cuam tshuam rau tam sim no generated. Daim duab hauv qab no qhia txog qhov cuam tshuam ntawm qhov kub thiab txias ntawm PV modules.

Cov kev hloov ntawm lub teeb siv zog muaj kev cuam tshuam ntau dua ntawm cov roj teeb tso zis ntau dua li qhov hloov pauv ntawm qhov kub thiab txias. Qhov no muaj tseeb rau txhua yam khoom siv PV. Ib qho txiaj ntsig tseem ceeb ntawm kev sib xyaw ua ke ntawm ob qhov teebmeem no yog tias lub zog ntawm PV cell txo qis nrog kev siv lub teeb qis thiab / lossis nce kub.

Maximum zog taw tes (MPP)

Lub hnub ci hlwb tuaj yeem ua haujlwm dhau ntau qhov voltages thiab tam sim no. MPP yog txiav txim siab los ntawm kev ua kom tsis tu ncua ntawm cov khoom siv hluav taws xob ntawm lub teeb pom kev zoo ntawm xoom (kev tshwm sim luv luv) mus rau tus nqi siab heev (qhib qhov kev tshwm sim hauv Circuit Court). MPP yog qhov chaw ua haujlwm ntawm qhov V x Kuv mus txog nws qhov siab tshaj plaws thiab ntawm qhov kev siv lub teeb ci siab kawg tuaj yeem ua tiav. Lub zog tso zis thaum lub caij luv luv (PV voltage sib npaug li xoom) lossis qhib Circuit Court (PV tam sim no sib npaug xoom) tshwm sim yog xoom.

High-zoo monocrystalline silicon hnub ci hlwb tsim ib qho hluav taws xob qhib hluav taws xob ntawm 0.60 volts ntawm qhov kub ntawm 25 ° C. Nrog lub hnub ci tag nrho thiab huab cua kub ntawm 25 ° C, qhov kub ntawm ib lub xov tooj ntawm tes yuav nyob ze rau 45 ° C, uas yuav txo tau qhov qhib hluav taws xob rau li 0.55V. Raws li qhov kub thiab txias, qhov qhib hluav taws xob hluav taws xob txuas ntxiv txo kom txog thaum PV Module luv Circuit Court.

Lub zog siab tshaj plaws ntawm lub roj teeb kub ntawm 45 ° C feem ntau yog tsim los ntawm 80% qhib hluav taws xob hluav taws xob thiab 90% luv Circuit Court tam sim no. Lub luv luv-circuit tam sim no ntawm lub roj teeb yog yuav luag proportional rau lub illumination, thiab qhib-circuit voltage tsuas yog txo los ntawm 10% thaum lub illumination yog txo los ntawm 80%. Cov roj teeb uas tsis zoo yuav txo qhov hluav taws xob sai dua thaum qhov tam sim no nce, yog li txo lub zog muaj zog. Cov zis tawm poob los ntawm 70% mus rau 50%, lossis txawm tias tsuas yog 25%.

Lub hnub ci microinverter yuav tsum xyuas kom meej tias PV modules ua haujlwm ntawm MPP txhua lub sijhawm kom lub zog siab tshaj plaws tuaj yeem tau txais los ntawm PV modules. Qhov no tuaj yeem ua tiav siv lub zog siab tshaj plaws tswj lub voj, tseem hu ua Maximum Power Point Tracker (MPPT). Kev ua tiav qhov sib piv siab ntawm MPP taug qab kuj xav kom PV tso zis voltage ripple me me kom cov PV tam sim no tsis hloov ntau dhau thaum ua haujlwm ze ntawm lub zog siab tshaj plaws.

MPP voltage ntau ntawm PV modules feem ntau tuaj yeem txhais tau nyob rau hauv thaj tsam ntawm 25V txog 45V, nrog lub zog tsim hluav taws xob kwv yees li 250W thiab qhib qhov hluav taws xob qis dua 50V.

Kev siv thiab kho:

siv

1. Txuas thiab nruab cov khoom siv nruj me ntsis raws li qhov yuav tsum tau ua ntawm kev ua haujlwm ntawm inverter thiab cov lus qhia txog kev tu. Thaum lub sij hawm kev teeb tsa, koj yuav tsum ua tib zoo xyuas: seb lub xov hlau puas ua tau raws li qhov yuav tsum tau ua; seb cov khoom thiab cov terminals puas xoob thaum thauj; seb cov khoom siv insulated puas zoo insulated; seb lub hauv paus system ua tau raws li cov cai.

2. Lub inverter yuav tsum tau ua thiab siv nruj me ntsis raws li cov lus qhia rau kev siv thiab tu. Tshwj xeeb: ua ntej tig lub tshuab, ua tib zoo saib seb qhov input voltage zoo li cas; Thaum lub sijhawm ua haujlwm, ua tib zoo saib seb qhov kev sib txuas ntawm kev tig rau thiab tawm lub tshuab puas yog, thiab seb qhov ntsuas ntawm txhua lub 'meter' thiab qhov taw qhia lub teeb yog qhov qub.

3. Inverters feem ntau muaj kev tiv thaiv tsis siv neeg rau Circuit Court breakage, overcurrent, overvoltage, overheating thiab lwm yam khoom, yog li thaum cov phenomena tshwm sim, tsis tas yuav kaw manually; cov ntsiab lus tiv thaiv kev tiv thaiv tsis siv neeg feem ntau tau teeb tsa ntawm lub Hoobkas, thiab tsis tas yuav kho dua.

4. Muaj hluav taws xob siab nyob rau hauv inverter txee. Cov neeg ua haujlwm feem ntau tsis raug tso cai qhib lub qhov rooj txee, thiab lub txee lub qhov rooj yuav tsum tau muab xauv rau lub sijhawm qub.

5. Thaum chav tsev kub siab tshaj 30 ° C, cov cua kub dissipation thiab txias ntsuas yuav tsum tau coj los tiv thaiv cov cuab yeej tsis ua hauj lwm thiab ncua lub neej kev pab cuam ntawm cov khoom siv.

Kev tu thiab tshuaj xyuas

1. Tsis tu ncua xyuas seb cov xaim ntawm txhua qhov ntawm lub inverter puas ruaj khov thiab seb puas muaj qhov xoob. Tshwj xeeb, kiv cua, fais fab module, input davhlau ya nyob twg, tso zis davhlau ya nyob twg thiab grounding yuav tsum tau ua tib zoo xyuas.

2. Thaum lub tswb kaw lawm, nws tsis raug tso cai pib tam sim ntawd. Qhov laj thawj yuav tsum tau tshawb pom thiab kho ua ntej pib. Kev tshuaj xyuas yuav tsum tau ua nruj me ntsis raws li cov kauj ruam uas tau teev tseg hauv phau ntawv qhia kev tswj xyuas inverter.

3. Cov neeg ua haujlwm yuav tsum tau txais kev cob qhia tshwj xeeb thiab tuaj yeem txiav txim siab qhov ua rau muaj qhov tsis zoo thiab tshem tawm, xws li kev txawj hloov fuses, cov khoom siv, thiab cov khoom siv hluav taws xob puas. Cov neeg ua haujlwm tsis tau txais kev cob qhia tsis raug tso cai los ua cov khoom siv.

4. Yog tias muaj xwm txheej tshwm sim uas nyuaj rau kev tshem tawm lossis qhov ua rau muaj kev sib tsoo tsis meej, cov ntaub ntawv ntxaws ntxaws ntawm kev sib tsoo yuav tsum tau khaws cia thiab cov chaw tsim khoom siv inverter yuav tsum tau ceeb toom rau lub sijhawm kom daws tau qhov teeb meem.