Ii-inverters ze-Photovoltaic zinemigangatho engqongqo yobuchwephesha njengama-inverters aqhelekileyo. Nayiphi na i-inverter kufuneka ihlangabezane nezi zalathisi zobugcisa zilandelayo ukuba zithathwe njengemveliso efanelekileyo.
1. Uzinzo lwe-Voltage ye-Output
Kwinkqubo ye-photovoltaic, amandla ombane avela kwiseli yelanga kuqala agcinwe yibhetri, aze aguqulwe abe yi-220V okanye i-380V yangoku ngokutshintshana nge-inverter. Nangona kunjalo, ibhetri ichaphazeleka kwintlawulo yayo kunye nokukhutshwa kwayo, kwaye i-voltage yayo yokuphuma iyahluka ngokubanzi. Umzekelo, kwibhetri ene-12V yegama, ixabiso layo lombane lingahluka phakathi kwe-10.8 kunye ne-14.4V (ukugqithisa olu luhlu kunokubangela umonakalo kwibhetri) . Kwi-inverter efanelekileyo, xa umbane wegalelo utshintsha phakathi kolu luhlu, ukutshintshwa kwamandla ombane wokuphuma okuzinzileyo akufuneki kudlule i-± 5% yexabiso elilinganisiweyo, kwaye xa umthwalo uguquka ngequbuliso, ukutenxa kombane wokuphuma akufuneki kudlule ± 10. % yexabiso elilinganisiweyo.
2. Ukugqwetheka kwe-Waveform ye-Oltput Voltage
Kwiziguquli zamaza e-sine, ubuninzi obuvumelekileyo bokugqwetheka kwefom yamaza (okanye umxholo we-harmonic) kufuneka uxelwe. Ngokuqhelekileyo ibonakaliswe njengokuphazamiseka kwe-waveform ye-voltage ephumayo, ixabiso layo akufanele lidlule i-5% (imveliso yesigaba esisodwa ivumela i-10%). Ekubeni imveliso yangoku ye-harmonic ye-high-order ngoku yi-inverter iya kuvelisa ilahleko eyongezelelweyo efana ne-eddy yangoku kumthwalo we-inductive, ukuba i-waveform egqwesileyo ye-inverter inkulu kakhulu, iya kubangela ukufudumeza okunzulu kwamacandelo omthwalo, ongabalulekanga ukhuseleko lwezixhobo zombane kwaye luchaphazela kakhulu inkqubo. ukusebenza kakuhle.
3. Irethiweyo yemveliso frequency
Kwimithwalo ebandakanya iinjini, ezinje ngoomatshini bokuhlamba, iifriji, njl.njl., kuba eyona frequency yemoto yi-50Hz, i-frequency iphezulu kakhulu okanye iphantsi kakhulu, nto leyo eya kubangela ukuba isixhobo sifudumale kwaye sinciphise ukusebenza kakuhle kunye nobomi benkonzo. yenkqubo. Ubuninzi bemveliso kufuneka bube lixabiso elizinzileyo, ngokuqhelekileyo amandla ombane angama-50Hz, kwaye ukutenxa kwawo kufuneka kube ngaphakathi ± 1% phantsi kweemeko eziqhelekileyo zokusebenza.
4. Umthwalo wamandla ombane
Ukulinganisa ukukwazi kwe-inverter ukuthwala imithwalo ye-inductive okanye ye-capacitive. Umthwalo wamandla we-sine wave inverter yi-0.7 ukuya ku-0.9, kwaye ixabiso elilinganisiweyo yi-0.9. Kwimeko yomthwalo othile womthwalo, ukuba amandla ombane we-inverter aphantsi, umthamo ofunekayo we-inverter uya kwanda, oya kwandisa iindleko kunye nokwandisa amandla abonakalayo esekethe ye-AC yenkqubo ye-photovoltaic. Njengoko ukwanda kwangoku, ilahleko iya kunyuka ngokuqinisekileyo, kwaye ukusebenza kakuhle kwenkqubo kuya kuncipha.
5. Ukusebenza kakuhle kwe-inverter
Ukusebenza kakuhle kwe-inverter kubhekiselele kumlinganiselo wamandla aphumayo kumandla okufakelwa phantsi kweemeko zokusebenza ezichaziweyo, ezichazwe njengepesenti. Ngokuqhelekileyo, ukusebenza kakuhle kwe-photovoltaic inverter kubhekisela kumthwalo ococekileyo wokumelana, phantsi komthwalo we-80%. s ukusebenza kakuhle. Ekubeni ixabiso elipheleleyo lenkqubo ye-photovoltaic liphezulu, ukusebenza kakuhle kwe-photovoltaic inverter kufuneka kwandiswe, iindleko zenkqubo kufuneka zincitshiswe, kwaye i-cost-effectiveness ye-photovoltaic system kufuneka iphuculwe. Okwangoku, ukusebenza kakuhle okuqhelekileyo kwee-inverters eziqhelekileyo kuphakathi kwe-80% kunye ne-95%, kunye nokusebenza kakuhle kwee-inverters zamandla aphantsi kufuneka ukuba kungabi ngaphantsi kwe-85%. Kwinkqubo yoyilo lwangempela lwenkqubo ye-photovoltaic, akufuneki kuphela ukuba kukhethwe i-inverters ephezulu, kodwa kwangaxeshanye, inkqubo kufuneka iqwalaselwe ngokufanelekileyo ukwenza umthwalo wenkqubo ye-photovoltaic isebenze kufuphi neyona ndawo ifanelekileyo yokusebenza ngokusemandleni.
6. Umlinganiselo wemveliso yangoku (okanye umthamo wemveliso ulinganiswe)
Ibonisa umlinganiselo wemveliso yangoku ye-inverter ngaphakathi koluhlu lomthwalo ochaziweyo wamandla. Ezinye iimveliso ze-inverter zinika umthamo wemveliso olinganisiweyo, obonakaliswa kwi-VA okanye kwi-kVA. Umthamo olinganisiweyo we-inverter kuxa imveliso yamandla i-1 (oko kukuthi umthwalo ococekileyo ochasayo), i-voltage ye-output elinganisiweyo yimveliso yemveliso yemveliso yangoku.
7. Amanyathelo okukhusela
I-inverter enentsebenzo egqwesileyo kufuneka ibe nemisebenzi epheleleyo yokukhusela okanye imilinganiselo yokujongana neemeko ezahlukeneyo ezingaqhelekanga ngexesha lokusetyenziswa kwangempela, ukwenzela ukuba i-inverter ngokwayo kunye namanye amacandelo enkqubo angonakaliswa.
(1) Igalelo lomnini-polisi we-undervoltage:
Xa i-voltage yegalelo ingaphantsi kwe-85% ye-voltage elinganisiweyo, i-inverter kufuneka ibe nokukhuselwa kunye nokubonisa.
(2) I-akhawunti ye-inshurensi yokufaka i-overvoltage:
Xa i-voltage yegalelo iphezulu kune-130% ye-voltage elinganisiweyo, i-inverter kufuneka ikhusele kwaye ibonise.
(3) Ukhuseleko lwangoku:
Ukukhuselwa ngokugqithisileyo kwe-inverter kufuneka kukwazi ukuqinisekisa isenzo esifike ngexesha xa umthwalo ufutshane okanye umbane udlula ixabiso elivumelekileyo, ukwenzela ukuba uthintele ukuba ungonakaliswe ngokunyuka kwangoku. Xa umbane osebenzayo udlula i-150% yexabiso elilinganisiweyo, i-inverter kufuneka ikwazi ukukhusela ngokuzenzekelayo.
(4) Isiqinisekiso esiphuma kwi-short-circuit
Ixesha lesenzo sokukhusela i-inverter elifutshane akufanele lidlule i-0.5s.
(5) Igalelo lokubuyisela umva polarity:
Xa izibonda ezintle kunye nezibi zee-terminal zokufaka ziguqulwa, i-inverter kufuneka ibe nomsebenzi wokukhusela kunye nokubonisa.
(6) Ukhuseleko lombane:
I-inverter kufuneka ibe nokhuseleko lombane.
(7) Ukukhuselwa ngaphezu kobushushu, njl.
Ukongeza, kwii-inverters ngaphandle kwamanyathelo okuzinzisa i-voltage, i-inverter kufuneka ibe nemveliso yokukhusela i-overvoltage yokukhusela umthwalo kumonakalo ogqithiseleyo.
8. Iimpawu zokuqala
Uphawu lobuchule be-inverter ukuqala ngomthwalo kunye nokusebenza ngexesha lokusebenza okuguquguqukayo. I-inverter kufuneka iqinisekiswe ukuba iqale ngokuthembekileyo phantsi komthwalo olinganisiweyo.
9. ingxolo
Iinguqu, ii-inductors zokucoca, izitshixo ze-electromagnetic kunye neefeni ezikwizixhobo zombane zombane zonke zivelisa ingxolo. Xa i-inverter isebenza ngokuqhelekileyo, ingxolo yayo akufanele idlule i-80dB, kwaye ingxolo ye-inverter encinci ayifanele idlule i-65dB.
Ixesha lokuposa: Feb-08-2022
