Uluhlu lweeseli zelanga: I-Anti-Reverse Diode kunye ne-Bypass Diode

Kwi-solar cell square square, i-diode sisixhobo esixhaphake kakhulu.Iidiode ezisetyenziswa ngokuqhelekileyo zii-silicon rectifier diode.Xa ukhetha, shiya umda kwiinkcukacha zokuthintela umonakalo.Ngokuqhelekileyo, i-voltage yokuqhawula i-reverse peak kunye neyona ndlela yokusebenza ephezulu kufuneka ibe ngaphezu kokuphindwe kabini ubuninzi bombane osebenzayo kunye nokusebenza kwangoku.IiDiode zihlulwe kakhulu zibe ngamacandelo amabini kwiinkqubo zokuvelisa amandla elanga photovoltaic.

1. I-Anti-Reverse (Anti-Backflow) Diode

Omnye wemisebenzi yeI-anti-reverse diodekukuthintela okwangoku ibhetri kwimodyuli yeseli yelanga okanye uluhlu lwesikweri ukuba luguqulwe kwimodyuli okanye uluhlu lwesikwere xa lungavelisi umbane, olungasebenzisi amandla kuphela, kodwa lubangela ukuba imodyuli okanye uluhlu lwesikwere shushu okanye wonakaliswe;Umsebenzi wesibini kukuthintela ukuhamba kwangoku phakathi kwamasebe oluhlu lwesikwere kuluhlu lwebhetri. Oku kungenxa yokuba umbane wemveliso yesebe ngalinye kuthotho awukwazi ukulingana ngokupheleleyo, kusoloko kukho umahluko phakathi kwamandla ombane aphezulu naphantsi. isebe ngalinye, okanye i-voltage yemveliso yesebe iyancitshiswa ngenxa yempazamo okanye i-shading shading, kwaye umsinga wesebe lombane ophezulu uya kuqukuqela ukuya kwisebe le-voltage ephantsi, okanye nokuba umbane ophumayo we-square array iyonke iya kuncitshiswa.Lo mcimbi unokuphetshwa ngokudibanisa iidiode zokutshaja ezichasene ne-reverse kuthotho kwisebe ngalinye.
Kwinkqubo yokuvelisa amandla e-photovoltaic ezimeleyo, ezinye iisekethe zokulawula i-photovoltaic ziye zaxhunywa kwii-diode zokutshaja ezichasene ne-reverse, oko kukuthi, xa umlawuli unomsebenzi wokutshaja ochasene ne-reverse, ukukhutshwa kwecandelo akufuneki ukuba kudibaniswe ne-diode.
I-anti-reverse diode ine-voltage yehla ngaphambili, kwaye kuya kubakho ukusetyenziswa kwamandla athile xa kuxhunywe kuchungechunge kwisekethe.Ukuhla kwamandla ombane we-silicon rectifier diode esetyenziswa ngokubanzi malunga ne-0.7V, kwaye ityhubhu yamandla aphezulu inokufikelela kwi-1 ~ 20.3V, kodwa i-voltage yayo yokumelana kunye ne-Amandla amancinci, afanelekile kwizicelo zamandla aphantsi.

I-PV anti-reverse diode kufuneka ibe nezi mpawu zilandelayo:

1. I-voltage ephezulu: ngokubanzi kufuneka idlule i-1500V, kuba uluhlu oluphezulu lwe-photovoltaic luya kufikelela okanye ludlule i-1000V.

2. Ukusetyenziswa kwamandla aphantsi, oko kukuthi, ukuchasana (kwi-state impedance incinci kangangoko kunokwenzeka, ngokuqhelekileyo ingaphantsi kwe-0.8 ~ 0.9V): Ekubeni inkqubo ye-photovoltaic idinga ukugcina ukusebenza kakuhle kwenkqubo yonke, amandla ukusetyenziswa kwe-anti-reverse diode kwibhokisi yokudibanisa kufuneka ibe yincinci kangangoko kunokwenzeka.

3. Umthamo ofanelekileyo wokutshatyalaliswa kobushushu (ukumelana ne-thermal ephantsi kunye nokuchithwa kakuhle kobushushu kuyafuneka): Ngenxa yokuba indawo yokusebenza yebhokisi yokudibanisa i-photovoltaic idla ngokungahambi kakuhle, i-anti-reverse diode idinga ukuba nomthamo ofanelekileyo wokushisa ubushushu, kwaye ngokuqhelekileyo kufuneka kwakhona. qwalasela iimeko zemozulu ezifana neGobi namahewu.

2. I-Bypass Diode

Xa kukho iimodyuli zeeseli zelanga ezingakumbi ezidityaniswe kuthotho ukwenza uluhlu lweseli yesikweri okanye isebe loluhlu lweseli yesikweri, enye (okanye 2 ~ 3) diode kufuneka zidityaniswe ngokuhambelana ngasemva kwitheminali yesiphumo esilungileyo nesibi sebhetri nganye. Iphaneli.Iidiode ezidityaniswe ngokuhambelana kuzo zombini iziphelo zecandelo zibizwa ngokuba yi-bypass diodes.
Umsebenzi we-bypass diode kukuthintela icandelo elithile kuluhlu lwesikwere okanye inxalenye ethile yecandelo ukuba libe nomthunzi okanye lingasebenzi kakuhle ukumisa ukuveliswa kwamandla.I-bias yangaphambili iya kwenziwa kuzo zombini iziphelo zecandelo le-bypass diode ukwenza ukuziphatha kwe-diode.Umtya osebenzayo wangoku udlula inxalenye ephosakeleyo kwaye ugeleza kwi-diode, engachaphazeli ukuveliswa kwamandla kwamanye amacandelo aqhelekileyo.Ngelo xesha, iphinda ikhusele icandelo eligqithisiweyo ukuba lonakaliswe yi-bias ephezulu okanye ukufudumeza ngenxa "yesiphumo sendawo eshushu".
I-Bypass diodes ifakwe ngokubanzi ngokuthe ngqo kwibhokisi ye-junction.Ngokwamandla amacandelo kunye nenani leentambo zebhetri, i-1 ukuya kwi-3 diode ifakwe.
I-Bypass diodes ayifuni kuyo nayiphi na imeko.Xa amacandelo asetyenziswa yedwa okanye ngokufana, akufuneki adityaniswe ne-diode.Ngezihlandlo apho inani lamacandelo kuchungechunge lincinci kwaye indawo yokusebenza ilungile, kunokwenzeka ukuba ucinge ukuba ungasebenzisi i-bypass diode.

Umgaqo weSekethe yoKhuseleko lweDiode

Umsebenzi oqhelekileyo we-diode kukuvumela kuphela ukuba i-current idlule kwicala elinye (ebizwa ngokuba yi-bias phambili) kwaye ibhloke kwicala elingasemva (ebizwa ngokuba yi-reverse bias).

Xa kuveliswa i-voltage bias, ukunyanzeliswa kombane wangaphandle kwendawo yombane kunye ne-self-built field yombane kwandisa i-diffusion current yabathwali kwaye ibangela umbane ohamba phambili (oko kukuthi, unobangela wokuqhuba umbane).

Xa kusenziwa i-voltage ebuyela umva, indawo yombane yangaphandle kunye nebala lombane elizakhelwe ngokwalo zomelezwa ngakumbi, zenza i-reverse saturation yangoku i-I0 engenanto yakwenza ne-reverse bias voltage kuluhlu oluthile lwamandla ombane (esi sisizathu). ngenxa yokungaqhubeki).

Xa kukho i-reverse voltage bias ngaphandle, indawo yombane yangaphandle kunye nebala lombane elizakhelwe ngokwalo zomelezwa ngakumbi, zenza i-reverse saturation yangoku i-I0 ezimeleyo kwixabiso lamandla ombane elithambekele umva ngaphakathi koluhlu oluthile lwamandla ombane.