1. Kuyini ukwehla kwezinga lokushisa?

I-Derating ukunciphisa okulawulwayo kwamandla we-inverter. Ekusebenzeni okuvamile, ama-inverters asebenza endaweni yawo yamandla aphezulu. Kuleli phuzu lokusebenza, isilinganiso phakathi kwe-PV voltage kanye ne-PV yamanje iphumela emandleni aphezulu. Iphoyinti lamandla eliphakeme lishintsha njalo kuye ngamaleveli omsebe welanga kanye nezinga lokushisa lemojula ye-PV.

Ukwehla kwezinga lokushisa kuvimbela ama-semiconductors azwelayo ku-inverter ekushiseni ngokweqile. Uma izinga lokushisa elivumelekile ezingxenyeni ezigadiwe selifinyelelwe, i-inverter ishintsha indawo yayo yokusebenza ezingeni elincishisiwe lamandla. Amandla ancishiswa ngezinyathelo. Kwezinye izimo ezimbi kakhulu, i-inverter izovala ngokuphelele. Ngokushesha nje lapho izinga lokushisa lezingxenye ezibucayi liwela ngaphansi kwenani elibalulekile futhi, i-inverter izobuyela endaweni yokusebenza ephezulu.

Yonke imikhiqizo ye-Renac isebenza ngamandla aphelele namaza agcwele kuze kufike ezingeni lokushisa elithile, lapho ingase isebenze ngezilinganiso ezincishisiwe ukuze ivimbele ukulimala kwedivayisi. Leli nothi lobuchwepheshe lifingqa izici zokwehliswa kwezilinganiso zama-inverter e-Renac nokuthi yini ebangela ukwehla kwezinga lokushisa nokuthi yini engenziwa ukukunqanda.

QAPHELA

Wonke amazinga okushisa kudokhumenti abhekisela kuzinga lokushisa elizungezile.

2. Izakhiwo zokwehliswa kwezilinganiso zama-inverter e-Renac

I-Single Phase Inverters

Amamodeli alandelayo e-inverter asebenza ngamandla aphelele namaza agcwele afinyelela emazingeni okushisa asohlwini lwethebula elingezansi, futhi asebenza ngezilinganiso ezincishisiwe ezifika ku-113°F/45°C ngokuvumelana namagrafu angezansi. Amagrafu achaza ukuncishiswa kwamanje maqondana nezinga lokushisa. Umphumela wamanje wangempela awusoze waba ngaphezu komkhawulo wamanje oshiwo kumininingwane yedatha ye-inverter, futhi ungase ube ngaphansi kunalokho okuchazwe kugrafu engezansi ngenxa yezilinganiso ezithile zemodeli ye-inverter ngezwe ngalinye nangegridi.

Ama-Inverters ezigaba ezintathu

Amamodeli alandelayo e-inverter asebenza ngamandla aphelele namaza agcwele afinyelela kumazinga okushisa abhalwe kuthebula elingezansi, futhi asebenza ngezilinganiso ezincishisiwe ezifika ku-113°F/45°C, 95℉/35℃ noma 120°F/50°C ngokuvumelana emagrafuni angezansi. Amagrafu achaza ukuncipha kwamandla amanje (amandla) maqondana nezinga lokushisa. Umphumela wamanje wangempela awusoze waba ngaphezu komkhawulo wamanje oshiwo kumininingwane yedatha ye-inverter, futhi ungase ube ngaphansi kunalokho okuchazwe kugrafu engezansi ngenxa yezilinganiso ezithile zemodeli ye-inverter ngezwe ngalinye nangegridi.

I-Hybrid Inverters

Amamodeli alandelayo e-inverter asebenza ngamandla aphelele namaza agcwele afinyelela emazingeni okushisa asohlwini lwethebula elingezansi, futhi asebenza ngezilinganiso ezincishisiwe ezifika ku-113°F/45°C ngokuvumelana namagrafu angezansi. Amagrafu achaza ukuncishiswa kwamanje maqondana nezinga lokushisa. Umphumela wamanje wangempela awusoze waba ngaphezu komkhawulo wamanje oshiwo kumininingwane yedatha ye-inverter, futhi ungase ube ngaphansi kunalokho okuchazwe kugrafu engezansi ngenxa yezilinganiso ezithile zemodeli ye-inverter ngezwe ngalinye nangegridi.

3. Isizathu sokwehla kwezinga lokushisa

Ukwehla kwezinga lokushisa kwenzeka ngenxa yezizathu ezihlukahlukene, kuhlanganise nalezi ezilandelayo:

• I-inverter ayikwazi ukuqeda ukushisa ngenxa yezimo ezingezinhle zokufaka.
• I-inverter isetshenziswa elangeni eliqondile noma emazingeni okushisa aphezulu avimbela ukushabalaliswa kokushisa okwanele.
• I-inverter ifakwe kukhabhinethi, ikhabethe noma enye indawo encane evalekile. Isikhala esilinganiselwe asikuvumeli ukupholisa inverter.
• Uhlu lwe-PV kanye ne-inverter azifani (amandla ohlu lwe-PV uma kuqhathaniswa namandla okuguqula).
• Uma indawo yokufaka i-inverter isendaweni engafanele (isb. ukuphakama ebangeni lokuphakama okuphezulu okusebenzayo noma ngaphezulu kweMean Sea Level, bheka Isigaba “Idatha Yobuchwepheshe” encwadini yokusebenza kwe-inverter). Ngenxa yalokho, ukuncishiswa kwezinga lokushisa cishe kungenzeka njengoba umoya ungaminyene kakhulu ezindaweni eziphakeme futhi ngaleyo ndlela ungakwazi ukupholisa izingxenye.

4. Ukushisa kokushisa kwama-inverters

Ama-inverter e-Renac anezinhlelo zokupholisa ezenzelwe amandla awo kanye nomklamo. Iziguquli ezipholile zichitha ukushisa emkhathini ngamasinki okushisa nefeni.

Ngokushesha nje lapho idivayisi ikhiqiza ukushisa okungaphezu kwalokho okuvalekile okungakwazi ukushabalala, ifeni yangaphakathi iyavula (ifeni iyavula lapho izinga lokushisa likasinki wokushisa lifinyelela ku-70℃) futhi lidonsa umoya ngamapayipi okupholisa asendaweni ebiyelwe. I-fan ilawulwa ngesivinini: iphenduka ngokushesha njengoba izinga lokushisa likhuphuka. Inzuzo yokupholisa ukuthi i-inverter ingaqhubeka isondla ngamandla ayo aphezulu njengoba izinga lokushisa likhuphuka. I-inverter ayincishisiwe kuze kube yilapho isistimu yokupholisa ifinyelela umkhawulo womthamo wayo.

Ungagwema ukwehla kwezinga lokushisa ngokufaka ama-inverter ngendlela yokuthi ukushisa kuhlakazwe ngokwanele:

• Faka ama-inverters ezindaweni ezipholile(isb. amagumbi angaphansi esikhundleni se-attics), izinga lokushisa le-ambient kanye nomswakama ohlobene kufanele uhlangabezane nezidingo ezilandelayo.

• Ungafaki i-inverter ekhabhinethi, ikhabethe noma enye indawo encane evalekile, ukujikeleza komoya okwanele kufanele kuhlinzekwe ukuze kukhishwe ukushisa okukhiqizwa yiyunithi.
• Ungayivezi i-inverter ekukhanyeni kwelanga okuqondile. Uma ufaka i-inverter ngaphandle, yibeke emthunzini noma ufake uphahla phezulu.

• Gcina ukucaciswa okuncane okuvela kuma-inverter aseduze noma ezinye izinto, njengoba kuchazwe encwadini yokufaka. Khulisa ukucaciswa uma amazinga okushisa aphezulu kungenzeka endaweni yokufaka.

• Lapho ufaka ama-inverters amaningana, gcina imvume eyanele ezungeze ama-inverters ukuze uqinisekise indawo eyanele yokukhipha ukushisa.

5. Isiphetho

Ama-inverter e-Renac anezinhlelo zokupholisa eziklanyelwe amandla awo kanye nomklamo, ukwehla kwezinga lokushisa akunamiphumela emibi ku-inverter, kodwa ungagwema ukwehla kwezinga lokushisa ngokufaka ama-inverter ngendlela efanele.