Kwinkqubo ye-photovoltaic, umbane owenziweyo uphuma kwiimodyuli ze-photovoltaic ukuya kwi-inverter, eguqula ngoku ngokuthe ngqo kwi-current alternating current.La mandla e-AC ke asetyenziselwa ukunika amandla imithwalo efana nezixhobo zombane okanye izibane okanye ukubuyisela kwigridi.Nangona kunjalo, kwezinye iimeko, ukuhamba kombane kunokuguqulwa, ngakumbi xa inkqubo ye-photovoltaic ivelisa umbane ongaphezulu kunomthwalo ofunekayo.Kule meko, ukuba imodyuli ye-PV isavelisa amandla kwaye umthwalo udla amandla amancinci okanye akukho mandla, kunokubakho ukujikeleza kwangoku ukusuka kumthwalo obuyela kwigridi, kubangela ubungozi bokhuseleko kunye nomonakalo wezixhobo.
Ukuthintela oku kuhamba ngoku umva, iinkqubo ze-photovoltaic zixhotyiswe ngezixhobo ezichasene ne-reverse zangoku okanye iimpawu.Ezi zixhobo ziqinisekisa ukuba ngoku kuhamba kuphela kwicala elifunwayo, ukusuka kwimodyuli ye-photovoltaic ukuya kumthwalo okanye igridi.Bathintela nayiphi na i-backflow yangoku kwaye bakhusele iinkqubo kunye nezixhobo kumonakalo onokuthi ube khona.Ngokubandakanya ukusebenza kwangoku okuchasene ne-reverse, abaqhubi benkqubo ye-PV banokuqinisekisa ukusebenza okukhuselekileyo nokusebenzayo, ukuphelisa umngcipheko wangoku, kunye nokuthobela imigangatho yokhuseleko kunye nemimiselo.
Umgaqo ophambili wokuthintela ukubuyisela umva we-inverter kukubona i-voltage kunye nokuphindaphinda kwegridi yamandla ngexesha langempela ukuqonda ulawulo kunye nokulawulwa kwe-inverter.Ezi zilandelayo ziindlela ezininzi zokuqonda i-inverter anti-backflow:
Ukufunyanwa kwe-DC: I-inverter ibona ngokuthe ngqo isalathiso kunye nobukhulu bexesha langoku ngokusebenzisa i-sensor yangoku okanye i-detector yangoku, kwaye iguqule ngokuguquguqukayo amandla okuphuma kwe-inverter ngokolwazi olufunyenweyo.Ukuba i-reverse yangoku imeko ifunyenwe, i-inverter iya kunciphisa ngokukhawuleza okanye iyeke ukunika amandla kwigridi.
Isixhobo sangoku esichasene nomva: Isixhobo sangoku esichasene nomva sikholisa ukuba sisixhobo sombane esibona imeko yangoku ebuya umva kwaye sithathe amanyathelo afanelekileyo olawulo.Ngokuqhelekileyo, isixhobo sokuthintela umva sibeka iliso kwi-voltage kunye ne-frequency yegridi kwaye, xa sibona ukubuya umva, ngokukhawuleza silungisa amandla okukhutshwa kwe-inverter okanye ukuyeka ukuhanjiswa kwamandla.Isixhobo sokuthintela umva singasetyenziselwa njengemodyuli eyongezelelweyo okanye inxalenye ye-inverter, enokuthi ikhethwe kwaye ifakwe ngokweemfuno ze-inverter.
Izixhobo zokugcina amandla: Izixhobo zokugcina amandla zinokunceda ukusombulula ingxaki yokubuyela umva kwe-inverter.Xa amandla aveliswa yi-inverter edlula imfuno yomthwalo wegridi, amandla angaphezulu angagcinwa kwisixhobo sokugcina amandla.Izixhobo zokugcina amandla zingaba iipakethi zebhetri, ii-supercapacitors, izixhobo zokugcina i-hydrogen, njl. Xa igridi idinga amandla angaphezulu, isixhobo sokugcina amandla sinokukhulula amandla agciniweyo kunye nokunciphisa ukuxhomekeka kwigridi, ngaloo ndlela ukuthintela ukubuyisela umva.
Ukufumanisa i-Voltage kunye nokuQhuba rhoqo: I-inverter ayiboni kuphela okwangoku ukugqiba ukuba i-reverse current iyenzeka kodwa ibeka iliso kwi-voltage yegridi kunye ne-frequency ukuze ibone i-anti-reverse current.Xa i-inverter ihlola ukuba i-voltage yegridi okanye i-frequency iphuma kuluhlu olusetiweyo, iya kunciphisa okanye iyeke ukuhambisa amandla kwigridi ukuthintela imisinga ebuyela umva.
Kufuneka kuqatshelwe ukuba indlela echanekileyo yokuqonda ukukhuselwa kwe-inverter backflow iya kuhluka ngokuxhomekeka kwi-brand kunye nemodeli ye-inverter.Ngoko ke, kucetyiswa ukuba xa usebenzisa i-inverter, funda incwadana yemveliso kunye nencwadana yokusebenza ngononophelo ukuze uqonde ukuqonda okuthe ngqo kunye nendlela yokusebenza yomsebenzi wayo ochasene ne-reverse wangoku.
Ixesha lokuposa: Jul-21-2023