I-Inverter luhlobo lwesixhobo sohlengahlengiso lwamandla esenziwe zizixhobo ze-semiconductor, ikakhulu ezisetyenziselwa ukuguqula amandla e-DC abe ngamandla e-AC, ngokubanzi aqulunqwe yisekethe yokunyusa kunye ne-inverter bridge circuit.Isekethe yokunyusa inyusa amandla ombane weDC weseli yelanga ukuya kumbane weDC ofunwa lulawulo lokuphuma kwe-inverter;Umjikelo webhulorho ye-inverter uguqula amandla ombane onyusiweyo we-DC abe ngumbane oqhelekileyo we-AC ngokulinganayo.
I-Inverter, eyaziwa ngokuba ngumlawuli wamandla, inokwahlulwa ibe ziindidi ezimbini zonikezelo lwamandla oluzimeleyo kunye negridi edityaniswe ngokuhambelana nokusetyenziswa kwe-inverter kwinkqubo yokuvelisa amandla e-photovoltaic.Ngokwemowudi yokumodareyitha, inokohlulwa ibe yi-square wave inverter, inverter yenyathelo, i-sine wave inverter kunye nesigaba esithathu esidityanisiweyo.Kwi-inverter esetyenziswe kwinkqubo edibeneyo yegridi, ngokuhambelana nobukho okanye ukungabikho kwe-transformer inokwahlulwa ibe yi-transformer type inverter kunye ne-transformer type inverter.Iiparamitha eziphambili zezobugcisa ze-solar photovoltaic inverter zezi:
1. Ixabiso lemveliso yombane
I-inverter ye-pv kufuneka ikwazi ukukhupha amandla ombane alinganisiweyo phakathi koluhlu lokuguquguquka oluvunyelweyo lwegalelo elichaziweyo lombane we-dc.Ngokubanzi, xa umbane wemveliso olinganisiweyo ukwinqanaba elinye lama-220v kunye nenqanaba lesithathu le-380v, ukutenxa kokuguquguquka kwamandla ombane kunala malungiselelo alandelayo.
(1) Kwimeko ezinzileyo yokusebenza, ukutenxa kokuguquguquka kwamandla ombane ngokuqhelekileyo kufuneka kungagqithi ± 5% kwixabiso elilinganisiweyo.
(2) Ukutenxa kumbane akusayi kudlula ± i-10% yexabiso elilinganisiweyo kwimeko yokuguqulwa komthwalo.
(3) Ngaphantsi kweemeko eziqhelekileyo zokusebenza, iqondo elingalinganiyo lesigaba sesithathu sokukhutshwa kwamandla ombane we-inverter akufanele kudlule i-8%.
(4) Ukuphazamiseka kwesigaba sesithathu se-voltage ye-voltage waveform (i-sine wave) akufanele idlule i-5%, kwaye imveliso yesigaba esisodwa akufanele idlule i-10%.
(5) I-inverter output frequency AC voltage phantsi kweemeko eziqhelekileyo zokusebenza ukutenxa kwayo kufuneka kube ngaphakathi kwe-1%.Umthamo wombane wemveliso ochazwe kumgangatho wesizwe we-gb/t 19064-2003 kufuneka ube phakathi kwe-49 kunye ne-51hz.
2, umthwalo amandla factor
Umthamo wamandla omthwalo ubonisa umthamo we-inverter kunye nomthwalo owenziweyo okanye umthwalo we-capacitive.Ngaphantsi kweemeko zamaza e-sine, umthamo wamandla omthwalo usuka kwi-0.7 ukuya kwi-0.9, kwaye ukulinganisa ngu-0.9.Kwimeko yamandla athile omthwalo, ukuba amandla ombane we-inverter aphantsi, umthamo ofunekayo we-inverter uya kunyuka, okukhokelela ekunyuseni kweendleko, ngexesha elifanayo, amandla abonakalayo enkqubo ye-photovoltaic i-AC loop iyanda, i-loop yangoku iyanda, ilahleko iya kunyuka ngokuqinisekileyo, kwaye ukusebenza kakuhle kwenkqubo kuya kuncipha.
3. Isiphumo esilinganisiweyo sangoku kunye nomthamo
Isiphumo esilinganisiweyo sangoku sibhekisa kwisiphumo esikalisiweyo sangoku se-inverter ngaphakathi koluhlu oluchaziweyo lwamandla ombane (iyunithi: A).Umthamo wemveliso olinganisiweyo yimveliso yombane wemveliso olinganisiweyo kunye nomlinganiselo wemveliso yangoku ye-inverter xa imveliso yamandla i-1 (okt, umthwalo osulungekileyo ochasayo), kwi-KVA okanye kW.
Ixesha lokuposa: Aug-20-2022
