I-voltage ohlangothini lwe-DC yohlelo lwamandla elanga inyuke yaya ku-1500V, futhi ukunyuswa kanye nokusetshenziswa kwamaseli angama-210 abeke phambili izidingo eziphakeme zohlelo lukagesi. Ngemuva kokuthi i-voltage yohlelo inyuswa, iba nezinselelo zokufakelwa kanye nokuphepha kohlelo, futhi yandisa ingozi yokuwohloka kwezithako, i-inverter wiring, kanye nemibuthano yangaphakathi. Amaphutha ahambelana nawo avela.
Ukuze uhambisane nezingxenye ezinabakhiqizi bamanje, abasebenza ngaphakathi, bakhulisa okokufaka kwamanje kwentambo kusuka ku-15a kuya ku-20a I-MPPT kuya kwabathathu noma ngaphezulu.in icala lephutha, intambo ingahle ibe nenkinga yokuhlobisa emuva kwamanje. Ukuxazulula le nkinga, ukushintshwa kwe-DC nomsebenzi we "Intelligent DC Shutdown" sekuvele njengoba kudingeka izikhathi.
01 Umehluko phakathi kokushintsha kwendabuko okuhlukanisayo kanye ne-DC switch ehlakaniphile
Okokuqala, i-DC yendabuko ye-DC yokushintsha ingahle ihlukane ngaphakathi kwamanje, njenge-omatinal 15a, khona-ke ingaphula amanje ngaphansi kwamandla kagesi alinganiselwe we-15a futhi ngaphakathi.Nakakhi umenzi uzomaka umthamo ogqamile we-Iololating , kuvame ukungakwazi ukuphula i-short-circuit yamanje.
Umehluko omkhulu phakathi kokushintsha okuhlukanisayo kanye nokwephula umjikelezo ukuthi i-circuit Breaker inekhono lokuphula amanje, futhi isizungu sejikelezo esifushane emcimbini omkhulu kakhulu kunokwephulwa kwesifunda ; Njengoba isizungu esifushane samanje sohlangothi lwe-Photovoltaic DC luvame cishe izikhathi eziyi-1,2 ukukalwa kwamanje, okunye ukushintshwa okuhlukanisayo noma ukushintshwa kwemithwalo nakho kungaphula futhi isizungu esifushane sohlangothi lwe-DC.
Njengamanje, i-smart dc switch esetshenziswa yi-inverter, ngaphezu kokuhlangana nesitifiketi se-IEC609477, futhi ihlangabezana nomthamo owedlule we-Overcurve onamandla athile, angaphula amaphutha aphezulu ngaphakathi kwebanga lamanje, ngempumelelo Ukuxazulula inkinga ye-String Backfeepec. Ngasikhathi sinye, i-Smart DC switch ihlanganiswe ne-DSP ye-inverter, ukuze iyunithi yohambo lwe-switch ingaqonda kahle futhi ngokushesha ibone imisebenzi efana nokuvikelwa okungaphezulu nokuvikelwa okufushane kwesifunda.
Umdwebo we-schemical schematic we-smart DC switch
I-02 I-Solar System Dealk Standard idinga ukuthi lapho isibalo seziteshi zokufaka zentambo ngaphansi kwe-MPPT ngayinye, i-fuse fuse kufanele zilungiselelwe ohlangothini lwe-DC.Izinzuzo zokusebenzisa i-Inverters ye-FUSE ukunciphisa Umsebenzi wokusebenza kanye nokulungisa ukufakwa esikhundleni kwamafulethi njalo ohlangothini lwe-DC. Ama-Inverterters asebenzisa ukushintshwa kwe-DC ehlakaniphile esikhundleni se-fuse. I-MPPT ingafaka amaqembu ama-3 wezintambo. Ngaphansi kwezimo zephutha ezedlulele, kuzoba nengozi yokuthi amaqembu angama-2 wama-2 wezintambo azogeleza abuyele emuva eqenjini eli-1 lemicu. Ngalesi sikhathi, i-DC switch ehlakaniphile i-DC izovula ukushintshwa kwe-DC ngokukhishwa kwe-shunt bese uyinqamula ngesikhathi. umjikelezo wokuqinisekisa ukususwa okusheshayo kwamaphutha.
Umdwebo we-Schematic we-MPPT String yamanje yokupenda emuva
Ukukhishwa kwe-shunt empeleni kuyinto yokuqaqa ikhoyili kanye nedivayisi ebekiwe, esebenzisa i-voltage ecacisiwe ku-coil ye-shunt, futhi ngezenzo ezinjengokudonsa nge-electromagnetic, i-DC switch actuator ikhishwe ukuvula i-brake, futhi i-shunt iyayikhipha Isetshenziswa kaningi ekulawuleni kwamandla okuzenzakalelayo okuzenzakalelayo. Lapho i-smart dc switch ilungiselelwe kwi-helling ye-goofi, switch ye-DC ingakhishwa futhi ivulwe nge-inverter DSP ukunqamula umjikelezo we-DC switch.
Kwabakwa-Inverters besebenzisa umsebenzi wokuvikela uhambo lweShunt, kuqala kudingekile ukuqinisekisa ukuthi umjikelezo wokulawula we-shunt coil uthola amandla okulawula ngaphambi kokuvikelwa kokuvikela komjikelezo omkhulu ungaqinisekiswa.
03 Ithemba lesicelo sokushintsha kwe-DC ehlakaniphile
Njengoba ukuphepha kohlangothi lwe-Photovoltaic DC kuthola ukunakwa kancane kancane, imisebenzi yezokuphepha efana ne-AFCI ne-RSD kukhulunywe ngokwengeziwe futhi muva nje.Smart DC switch ibalulekile. Lapho kwenzeka iphutha, ukushintshwa kwe-Smart DC kungasebenzisa ngempumelelo ukulawulwa okukude kanye nokuqukethwe okuphelele kokuqukethwe kwe-Smart switch. Ngemuva kwesenzo se-AFCI noma i-RSD, i-DSP izothumela isiginali yohambo ukuze ivule ngokuzenzakalelayo i-DC DC Soloration switch. Yakha iphuzu lekhefu elicacile ukuze kuqinisekiswe ukuphepha kwabasebenzi bezokugcina. Lapho i-DC switch iphula ingxenye enkulu yamanje, izothinta impilo kagesi ye-switch. Lapho usebenzisa i-DC switch ehlakaniphile, ukugqashula kudla kuphela impilo yemishini ye-DC switch, evikela ngempumelelo impilo kagesi kanye ne-Arc ecida ikhono lokushintsha kwe-DC.
Ukusetshenziswa kokushintshwa kwe-DC okuqondayo nakho kwenza ukuthi kube nokwenzeka ukuthembeka "okukodwa okungukhiye" wemishini ye-inverter ezimweni zasekhaya; okwesibili ukushintshwa kwe-DSP control shutdown, lapho kwenzeka i-DC ye-Inverter, vala ngokunembile ngesiginali ye-DSP, kwakha iphuzu lokudilizwa kwesondlo elithembekile.
Isifinyezo se-04
Ukusetshenziswa kokushintshwa kwe-DC okuqondayo ikakhulukazi kuxazulula inkinga yokuvikelwa emuva yokuhlobisa emuva emuva, kepha ukuthi umsebenzi wokuphamba okukude ungasetshenziswa kwezinye izimo ezivuselelayo nezisiqinisekiso sasekhaya ukwakha ukuphepha komsebenzisi ezimweni eziphuthumayo. Amandla okubhekana namaphutha adinga uhlelo lokusebenza nokuqinisekiswa kokushintshwa kwe-smart DC embonini.
Isikhathi sePosi: Feb-16-2023