Ekusebenzeni kwezitshalo zamandla e-photovoltaic, besihlale sinethemba lokukhulisa ukuguqulwa kwamandla okukhanya abe amandla kagesi ukuze sigcine izimo zokusebenza ezisebenza kahle. Ngakho-ke, singakwandisa kanjani ukusebenza kahle kokukhiqizwa kwamandla kwezitshalo zamandla e-photovoltaic?
Namuhla, ake sikhulume ngento ebalulekile ethinta ukusebenza kahle kokukhiqizwa kwamandla kwezitshalo zamandla e-photovoltaic - ubuchwepheshe bokulandelela indawo yamandla aphezulu, okuyilokho esivame ukukubiza ngokuthi.MPPT.
I-Maximum Power Point Tracking (MPPT) isistimu kagesi eyenza iphaneli ye-photovoltaic ikhiphe amandla kagesi engeziwe ngokulungisa isimo sokusebenza semojula kagesi. Ingakwazi ukugcina ngokuphumelelayo umshini oqondile owenziwe iphaneli yelanga ebhethrini, futhi ingaxazulula ngokuphumelelayo ukusetshenziswa kwamandla ezifuywayo nezimboni ezindaweni ezikude nezindawo zokuvakasha ezingakwazi ukumbozwa ngamagridi kagesi avamile, ngaphandle kokubangela ukungcoliswa kwemvelo.
Isilawuli se-MPPT singakwazi ukubona i-voltage ekhiqiziwe yephaneli yelanga ngesikhathi sangempela futhi silandelele i-voltage ephezulu kakhulu nevelu yamanje (VI) ukuze isistimu ikwazi ukushaja ibhethri ngokuphuma kwamandla aphezulu. Kusetshenziswa ezinhlelweni ze-solar photovoltaic, ukuxhumanisa umsebenzi wamaphaneli elanga, amabhethri, kanye nemithwalo ubuchopho besistimu ye-photovoltaic.
Iqhaza le-MPPT
Umsebenzi we-MPPT ungavezwa emushweni owodwa: amandla okukhipha iseli ye-photovoltaic ahlobene ne-voltage yokusebenza yesilawuli se-MPPT. Kuphela uma isebenza ku-voltage efaneleke kakhulu lapho amandla ayo okukhiphayo angaba nenani eliphakeme eliyingqayizivele.
Ngenxa yokuthi amaseli elanga athintwa izinto zangaphandle ezifana nokuqina kokukhanya nendawo ezungezile, amandla awo aphumayo ayashintsha, futhi amandla okukhanya akhiqiza ugesi owengeziwe. I-inverter ene-MPPT yokulandelela amandla amakhulu iwukusebenzisa ngokugcwele amaseli elanga futhi iwenze asebenze endaweni yamandla aphezulu. Okusho ukuthi, ngaphansi kwesimo semisebe yelanga ehlala njalo, amandla okukhipha ngemva kwe-MPPT azoba ngaphezu kwalokho ngaphambi kwe-MPPT.
Ukulawulwa kwe-MPPT kuvame ukufezwa ngesekethe yokuguqula i-DC/DC, i-photovoltaic cell array ixhunywe emthwalweni ngesekethe ye-DC/DC, futhi idivayisi yokulandelela amandla amaningi ihlala njalo.
Thola izinguquko zamanje kanye ne-voltage ye-photovoltaic array, futhi ulungise umjikelezo womsebenzi wesignali yokushayela ye-PWM yesiguquli se-DC/DC ngokuvumelana nezinguquko.
Kuma-circuits aqondile, lapho ukumelana nomthwalo kufana nokumelana kwangaphakathi kwamandla kagesi, ukunikezwa kwamandla kunomphumela omkhulu wamandla. Nakuba womabili amaseli e-photovoltaic kanye namasekhethi okuguqulwa kwe-DC/DC engaqondile kakhulu, angabhekwa njengamasekhethi aqondile ngesikhathi esifushane kakhulu. Ngakho-ke, inqobo nje uma ukumelana okulinganayo kwesifunda sokuguqulwa kwe-DC-DC kulungiswa ukuze kuhlale kufana nokumelana kwangaphakathi kweseli ye-photovoltaic, ukukhishwa okuphezulu kweseli ye-photovoltaic kungafinyelelwa, kanye ne-MPPT yeseli ye-photovoltaic. kungabuye kufezeke.
I-Linear, nokho isikhathi esifushane kakhulu, ingathathwa njengesekhethi yomugqa. Ngakho-ke, inqobo nje uma ukumelana okulingana kwesifunda sokuguqulwa kwe-DC-DC kulungiswa ukuze kuhlale kufana ne-photovoltaic.
Ukumelana kwangaphakathi kwebhethri kungakwazi ukubona ukuphuma okuphezulu kweseli ye-photovoltaic futhi kuphinde kuqaphele i-MPPT yeseli ye-photovoltaic.
Ukusetshenziswa kwe-MPPT
Mayelana nesikhundla se-MPPT, abantu abaningi bazoba nemibuzo: Njengoba i-MPPT ibaluleke kangaka, kungani singakwazi ukuyibona ngokuqondile?
Eqinisweni, i-MPPT ihlanganiswe ku-inverter. Sithatha i-microinverter njengesibonelo, isilawuli se-MPPT yeleveli yemojuli silandelela iphoyinti lamandla eliphakeme lemojula ngayinye ye-PV ngayinye. Lokhu kusho ukuthi noma ngabe imodyuli ye-photovoltaic ingasebenzi kahle, ngeke ithinte ikhono lokukhiqiza amandla amanye amamojula. Isibonelo, kulo lonke uhlelo lwe-photovoltaic, uma imojula eyodwa ivinjiwe ngo-50% wokukhanya kwelanga, izilawuli zokulandelela amaphuzu aphezulu kwamanye amamojula zizoqhubeka nokugcina ukusebenza kahle kwazo okuphezulu kokukhiqiza.
Uma unentshisekelo kuI-MPPT hybrid solar inverter, wamukelekile ukuthintana nomkhiqizi we-photovoltaic Radiance kuFunda kabanzi.
Isikhathi sokuthumela: Aug-02-2023