I-inverter, eyaziwa nangokuthi isilawuli samandla kanye nesilawuli samandla, iyingxenye ebalulekile yesistimu ye-photovoltaic.Umsebenzi oyinhloko we-inverter ye-photovoltaic ukuguqula okwamanje okuqondile okwenziwe iphaneli yelanga ibe yamanje eshintshanayo esetshenziswa yimishini yasendlini.Ngomjikelezo webhuloho eligcwele, iphrosesa ye-SPWM ngokuvamile isetshenziselwa ukulinganisa, ukuhlunga, ukukhulisa, njll., ukuze kutholwe amandla e-AC e-sinusoidal afana nemvamisa yomthwalo wokukhanyisa, i-voltage elinganiselwe, njll. kumsebenzisi wokugcina wesistimu.Nge-inverter, ibhethri le-DC lingasetshenziswa ukunikeza amandla e-AC entweni.
Uhlelo lokukhiqiza amandla elanga le-AC lwakhiwe ngamaphaneli elanga, izilawuli zokushaja, ama-inverter namabhethri;uhlelo lokuphehla amandla elanga le-DC alibandakanyi ama-inverters.Inqubo yokuguqula amandla e-AC abe amandla e-DC ibizwa ngokuthi ukulungisa, isekethe eqeda umsebenzi wokulungisa ibizwa ngokuthi i-rectifier circuit, futhi idivayisi eqaphela inqubo yokulungisa ibizwa ngokuthi idivayisi yokubuyisela noma isilungisi.Ngokuhambisanayo, inqubo yokuguqula amandla e-DC abe amandla e-AC ibizwa ngokuthi i-inverter, isekethe eqeda umsebenzi we-inverter ibizwa ngokuthi i-inverter circuit, kanti idivayisi eqaphela inqubo yokuguqula ibizwa ngokuthi i-inverter equipment noma i-inverter.
Umnyombo wedivayisi ye-inverter umjikelezo wokushintsha inverter, okubizwa ngokuthi i-inverter circuit ngamafuphi.Isekhethi iqedela umsebenzi we-inverter ngokuvula nokuvala iswishi yamandla kagesi.Ukuvalwa kwemishini yokushintsha kagesi kagesi kudinga ama-pulse athile okushayela, futhi lawa ma-pulses angase alungiswe ngokushintsha isignali kagesi.Amasekhethi akhiqiza futhi abeke ama-pulses ngokuvamile abizwa ngokuthi ama-control circuits noma ama-loop okulawula.Isakhiwo esiyisisekelo sedivayisi ye-inverter sihlanganisa isifunda sokuvikela, isifunda esikhiphayo, isifunda sokufaka, isifunda esikhiphayo, nokunye okunjalo ngaphezu kwesekhethi ye-inverter eshiwo ngenhla kanye nesifunda sokulawula.
I-inverter ayinawo umsebenzi wokuguqulwa kwe-DC-AC kuphela, kodwa futhi inomsebenzi wokwandisa ukusebenza kweseli yelanga kanye nomsebenzi wokuvikela ukwehluleka kwesistimu.Kafushane, kukhona ukusebenza okuzenzakalelayo nomsebenzi wokuvala shaqa, umsebenzi wokulawula ukulandela ngomkhondo amandla aphezulu, umsebenzi wokusebenza ongazimele (owohlelo oluxhunywe kugridi), umsebenzi wokulungisa ugesi ozenzakalelayo (owohlelo oluxhunywe kugridi), umsebenzi wokuthola i-DC (oxhumeke kugridi uhlelo), Umsebenzi wokutholwa kwe-DC (wohlelo oluxhunywe kugridi).Nasi isingeniso esifushane sokusebenza okuzenzakalelayo kanye nemisebenzi yokuvala shaqa kanye nomsebenzi wokulawula ukulandelela amandla aphezulu.
1. Ukusebenza okuzenzakalelayo nomsebenzi wokuvala: Ngemva kokuphuma kwelanga ekuseni, ukuqina kwemisebe yelanga kancane kancane kuyanda, futhi ukukhishwa kweseli yelanga nakho kuyanda.Lapho amandla okukhiphayo adingwa umsebenzi we-inverter efinyelelwa, i-inverter iqala ukusebenza ngokuzenzakalelayo.Ngemuva kokungena ekusebenzeni, i-inverter izonakekela ukukhishwa kwemodyuli yeseli yelanga ngaso sonke isikhathi.Uma nje amandla okukhipha we-solar cell module mkhulu kunamandla okukhipha adingwa umsebenzi we-inverter, i-inverter izoqhubeka nokusebenza;I-inverter ingasebenza futhi ngezinsuku zemvula.Lapho ukukhishwa kwe-module ye-solar cell kuba kuncane futhi ukukhishwa kwe-inverter kusondele ku-0, i-inverter yenza isimo sokulinda.
2. Umsebenzi wokulawula ukulandelela amandla amakhulu: Ukukhishwa kwemojula yeseli yelanga kushintsha ngamandla emisebe yelanga kanye nezinga lokushisa lemojula yeseli yelanga ngokwayo (izinga lokushisa le-chip).Ngaphezu kwalokho, ngenxa yokuthi i-module ye-solar cell inesici sokuthi i-voltage iyancipha ngokunyuka kwamanje, kunephuzu lomsebenzi elilungile lapho amandla aphezulu angatholakala khona.Amandla emisebe yelanga ayashintsha, kanye nephuzu lemishini elibonakala lilungile.Ngokuphathelene nalezi zinguquko, iphuzu lomsebenzi we-module yeseli yelanga lihlala lisendaweni ephakeme yamandla, futhi uhlelo luhlale luthola ukukhishwa kwamandla aphezulu kusuka kumojula yeseli yelanga.Lesi silawuli siwumkhawulo wokulawula ukulandelela amandla.Isici esikhulu kunazo zonke sama-inverters wezinhlelo zamandla elanga ukuthi afaka umsebenzi we-maximum power point tracking (MPPT).
Isikhathi sokuthumela: Sep-12-2022
