Ungakhetha kanjani phakathi kwesilawuli selanga se-PWM nesilawuli selanga se-MPPT

Isilawuli selanga siyingxenye ebalulekile ohlelweni lokuphehla amandla elanga. Izilawuli zelanga zidlala indima ebalulekile ezinhlelweni zokuphehla amandla elanga. Umsebenzi oyinhloko wesilawuli selanga ukuqapha i-voltage ephumayo kanye namandla ephaneli yelanga bese ushaja noma ukhiphe ibhethri njengoba kudingeka.

Ukwengeza, isilawuli sokushaja i-solar singaphinda sigade futhi sivikele ibhethri ukuvimbela izingozi ezifana nokushajwa ngokweqile, ukukhipha ngokweqile, kanye nesekhethi emfishane.

Izilawuli zelanga zihlukaniswe zaba izinhlobo ezimbili zezilawuli: i-PWM (Ukuguquguquka Kobubanzi Be-Pulse) ne-MPPT (Ukulandelela Iphoyinti Lamandla Okukhulu).

Yini isilawuli selanga se-PWM?

Isilawuli selanga se-PWM sisetshenziswa ukulawula ukushajwa kwamaphaneli elanga kanye nokuphuma kwamabhethri. I-PWM imele i-Pulse Width Modulation, elawula inqubo yokushaja ngokulungisa ububanzi be-pulse ye-voltage kanye nokuphumayo kwamanje ngephaneli yelanga. Isilawuli selanga se-PWM siqinisekisa ukuthi iphaneli yelanga ishaja ibhethri ngendlela esebenza kahle kakhulu kuyilapho ivikela ibhethri ekushajweni ngokweqile noma ekuchithekeni ngokweqile. Ngokuvamile inemisebenzi ehlukahlukene yokuvikela, njengokuvikelwa kwe-overvoltage, ukuvikelwa kwesifunda esifushane kanye nokuvikelwa kokuxhumeka okuhlehlayo, ukuqinisekisa ukusebenza okuphephile kwesistimu.

YiniIsilawuli selanga se-MPPT?

Igama eligcwele lesilawuli selanga se-MPPT Isilawuli Sokulandela Amaphuzu Amandla Aphezulu (Ukulandelela Iphoyinti Lamandla Okuphezulu) isilawuli selanga. Kuyisilawuli esikhulisa ukuphuma kwamandla amaphaneli elanga. Isilawuli selanga se-MPPT sithuthukisa ukusebenza kahle kwesimiso sonozungezilanga ngokulandelela indawo enkulu yamandla ephaneli yelanga ngesikhathi sangempela, okuyiphuzu elingcono kakhulu lokuqhathanisa phakathi kwe-voltage ye-solar ephumayo kanye namanje.

Izilawuli zelanga ze-MPPT zisebenzisa ama-algorithms kanye nezingxenye ze-elekthronikhi ukuze zilungise i-voltage kanye nezamanje ngesikhathi sokushajwa kwebhethri ukuze kuqinisekiswe ukuthi amaphaneli elanga ashaja ibhethri ngendlela esebenza kahle kakhulu. Ingakwazi ukulungisa ngokuzenzakalelayo i-voltage yokushaja ibhethri ukuze ivumelane nezinguquko zamandla okukhipha amandla ephaneli yelanga, ngaleyo ndlela ithuthukise ukusetshenziswa kwamandla.

Izilawuli zelanga ze-MPPT zivame ukuba nemisebenzi eminingi yokuvikela, njengokuvikelwa kwe-overvoltage, ukuvikelwa kwesifunda esifushane nokuvikelwa kokuxhumeka okuhlehlayo, ukuze kuqinisekiswe ukusebenza okuphephile kwesistimu. Ingakwazi futhi ukuqapha amandla okukhiphayo nesimo sokushaja samaphaneli elanga futhi inikeze idatha efanele nolwazi lwezibalo ukuze isize abasebenzisi baphathe kangcono futhi banakekele amasistimu elanga.

Ngakho-ke ungakhetha kanjani phakathi kwesilawuli selanga se-PWM nesilawuli selanga se-MPPT?

Kungakhathaliseki ukuthi abasebenzisi bakhetha izilawuli zelanga ze-PWM noma izilawuli zelanga ze-MPPT, kudingeka bacabangele ezabo izimo, indawo ezungezile, izindleko nezinye izici. Kungale ndlela kuphela lapho zingasetshenziswa kakhulu. Abasebenzisi bangacabangela izici ezilandelayo:

1. I-voltage yamaphaneli elanga: Isilawuli se-PWM sifanele amaphaneli elanga aphansi kagesi, ngokuvamile i-12V noma i-24V, kuyilapho isilawuli se-MPPT sifanele amaphaneli elanga anamandla kagesi aphezulu futhi singazivumelanisa nebanga elibanzi lamandla kagesi.

2. Ukusebenza kahle kwesistimu: Uma kuqhathaniswa nezilawuli zelanga ze-PWM, abalawuli be-MPPT banokusebenza okuphezulu kokuguqulwa futhi bangakwazi ukukhulisa ukusetshenziswa kwamandla okukhipha ama-solar panel. Ezinhlelweni ezinkulu zelanga, izilawuli zelanga ze-MPPT zivame kakhulu.

3. Izindleko: Uma kuqhathaniswa nesilawuli se-MPPT, isilawuli se-PWM sinezindleko eziphansi. Uma isabelomali sakho sinomkhawulo futhi isimiso sakho sonozungezilanga sincane, ungakhetha isilawuli se-PWM.

4. Indawo yokufakwa kwamaphaneli elanga: Uma amaphaneli elanga efakwe endaweni lapho izimo zokukhanya kwelanga zingazinzi khona noma zishintsha kakhulu, noma kunokuqondiswa okuhlukile phakathi kwamaphaneli, isilawuli se-MPPT singasingatha kangcono lezi zimo. Khulisa ukusetshenziswa kwamandla elanga.

Fingqa:

Uma unesabelomali esinqunyelwe futhi ufuna isisombululo esithengekayo, esilula futhi esinokwethenjelwa esinesistimu encane yokuphehla amandla elanga, ungakhetha isilawuli selanga se-PWM. Izilawuli zelanga ze-PWM zonga kakhulu futhi zilungele izinhlelo zokuphehla amandla elanga amancane naphakathi nendawo.

Uma unesabelomali esanele kanye nesistimu enkulu, futhi ufuna ukuphishekela ukusebenza kahle okuphezulu nokusebenza okungcono, ngakho-ke kunconywa ukuthi ukhethe isilawuli selanga se-MPPT. Izilawuli zelanga ze-MPPT zilungele izinhlelo zokuphehla amandla elanga amancane, aphakathi nendawo namakhulu. Nakuba intengo yayo iphakeme kunezilawuli zelanga ze-PWM, ingathuthukisa ngempumelelo ukuguqulwa kwesistimu.