I-Solar Inverter

I-Photovoltaic inverter (i-PV inverter noma i-solar inverter) ingaguqula amandla kagesi e-DC aguquguqukayo akhiqizwa amaphaneli elanga e-photovoltaic (PV) abe inverter enemvamisa yamanje (AC) eshintshashintshayo yama-mains frequency, engabuyiselwa ohlelweni lokudlulisa amandla okuhweba, noma kuhlinzekwe ekusetshenzisweni kwegridi yegridi.I-Photovoltaic inverter ingenye yebhalansi ebalulekile yesistimu (i-BOS) ohlelweni lwe-photovoltaic array, engasetshenziswa nemishini evamile yokuhlinzeka ngogesi we-AC.Ama-Solar inverters anemisebenzi ekhethekile yama-photovoltaic arrays, njengokulandelela indawo yamandla aphezulu kanye nokuvikelwa kwe-island.

Ama-Solar inverters angahlukaniswa abe yizigaba ezintathu ezilandelayo:
Ama-inverters azimele:Isetshenziswa kumasistimu azimele, i-photovoltaic array ishaja ibhethri, futhi isiguquli sisebenzisa i-voltage ye-DC yebhethri njengomthombo wamandla.Ama-inverter amaningi azimele nawodwa ahlanganisa namashaja ebhethri akwazi ukushaja ibhethri ngamandla e-AC.Ngokuvamile, ama-inverters anjalo awathinti igridi ngakho-ke awadingi ukuvikelwa kwe-islanding.

Iziguquli zegridi:I-voltage ephumayo ye-inverter ingabuyiselwa kugesi we-AC wezohwebo, ngakho-ke i-sine wave ephumayo idinga ukufana nesigaba, imvamisa kanye ne-voltage yokunikezwa kwamandla.I-inverter exhunywe kugridi inomklamo wokuphepha, futhi uma ingaxhumekile kumandla kagesi, okukhiphayo kuzocishwa ngokuzenzakalelayo.Uma amandla egridi ehluleka, isiguquli esixhunywe kugridi asinawo umsebenzi wokusekela ukunikezwa kwamandla.

Ama-inverters ekhophi yasenqolobaneni yebhethri (Ama-inverter ekhophi yasenqolobaneni yebhethri)ama-inverter akhethekile asebenzisa amabhethri njengomthombo wawo wamandla futhi asebenzisana neshaja yebhethri ukushaja amabhethri.Uma kunamandla amaningi, izoshajwa kabusha ekunikezeni amandla e-AC.Lolu hlobo lwe-inverter lunganikeza amandla e-AC kumthwalo oshiwo lapho amandla egridi ehluleka, ngakho-ke idinga ukuba nomsebenzi wokuvikela umthelela we-island.
I-athikili eyinhloko: Ukulandelela indawo yamandla aphezulu
Ama-inverters e-Photovoltaic asebenzisa ubuchwepheshe be-Maximum Power Point Tracking (MPPT) ukuze zidwebe amandla aphezulu kakhulu kumaphaneli elanga.Kunobudlelwane obuyinkimbinkimbi phakathi kwe-solar irradiance, izinga lokushisa kanye nokumelana okuphelele kwamaseli elanga, ngakho-ke ukusebenza kahle kokukhipha kuzoshintsha okungezona umugqa, okubizwa ngokuthi ijika lamanje-voltage (ijika le-IV).Inhloso yokulandelela amaphuzu aphezulu kakhulu ukukhiqiza ukumelana nomthwalo (wemodyuli yelanga) ukuze uthole amandla aphezulu ngokusho kokuphuma kwemoduli yelanga endaweni ngayinye.
I-form factor (FF) yeseli yelanga ihlanganiswe ne-voltage yayo evulekile yesifunda (VOC) kanye ne-short circuit current (ISC) izonquma amandla amakhulu weseli yelanga.Isici somumo sichazwa njengesilinganiso samandla aphezulu weseli yelanga ehlukaniswe umkhiqizo we-VOC ne-ISC.

Kunama-algorithms amathathu ahlukene okulandelela amaphuzu aphezulu kakhulu:i-perturb-and-observe, i-conductance ekhuphukayo, kanye ne-voltage engaguquki.Okubili kokuqala kuvame ukubizwa ngokuthi "ukukhuphuka kwamagquma".Indlela iwukulandela ijika le-voltage ngokumelene namandla.Uma iwela ngakwesobunxele sephuzu lamandla aphezulu, khulisa i-voltage, futhi uma iwela kwesokudla sephuzu lamandla aphezulu, yehlisa i-voltage.

Izilawuli zokushaja zingasetshenziswa namaphaneli elanga kanye namadivayisi anamandla e-DC.Isilawuli sokushaja singanikeza amandla aphumayo e-DC azinzile, sigcine amandla engeziwe ebhethri, futhi siqaphe ukushajwa kwebhethri ukuze sigweme ukushajwa ngokweqile noma ukuchichima ngokweqile.Uma amanye amamojula abiza kakhulu angakwazi futhi ukusekela i-MPPT.I-inverter ingaxhunywa ekuphumeni kwesilawuli se-solar charge, bese i-inverter ingashayela umthwalo we-AC.