Solar cell array: Anti-Reverse Diode uye Bypass Diode

Mune solar cell square array, diode chinhu chakajairika.Iwo anowanzo shandiswa diode anonyanya silicon rectifier diode.Pakusarudza, siya muganho mune zvakatemwa kudzivirira kuparara kwekukuvara.Kazhinji, iyo reverse peak breakdown voltage uye yakanyanya kushanda ikozvino inofanira kunge yakapetwa kaviri iyo yakanyanya kushanda voltage uye inoshanda ikozvino.Diodes anonyanya kukamurwa kuva mapoka maviri mune solar photovoltaic simba rekugadzira masisitimu.

1. Anti-Reverse (Anti-Backflow) Diode

Rimwe remabasa eanti-reverse diodendeyekudzivirira ikozvino yebhatiri kubva kune solar cell module kana square array kubva pakudzoserwa kumodule kana square array kana isiri kugadzira magetsi, ayo asingangope simba chete, asiwo anoita kuti module kana square array. kupisa kana kutokuvadzwa;Basa rechipiri nderokudzivirira kuyerera kwemazuva ano pakati pematavi e-square array mubhatiri array.Izvi imhaka yekuti kubuda kwemhepo yebazi rimwe nerimwe munhevedzano haigoni kuenzana zvachose, pane nguva dzose musiyano pakati pepamusoro uye yakaderera voltage ye. bazi rega rega, kana iyo inobuda voltage yebazi yakaderedzwa nekuda kwekukanganisa kana mumvuri shading, uye ikozvino yebazi repamusoro voltage inoyerera ichienda kune yakaderera voltage bazi, kana kunyange iyo inobuda voltage yeiyo yakazara square array ichaderedzwa.Ichi chiitiko chinogona kudzivirirwa nekubatanidza anti reverse kuchaja diode munhevedzano mubazi rega rega.
Mune yakazvimirira photovoltaic simba rekugadzira hurongwa, mamwe photovoltaic controller circuits akabatanidzwa kune anti-reverse kuchaja diode, ndiko kuti, kana mutongi ane anti-reverse kuchaja basa, chikamu chinobuda hachidi kubatanidzwa kune diode.
Iyo anti-reverse diode ine kudonha kwemagetsi kumberi, uye pachave nekumwe kushandiswa kwesimba kana yakabatana munhevedzano mudunhu.Kudonha kwevoltage yesilicon rectifier diode inowanzo shandiswa ingangoita 0.7V, uye iyo-high-power chubhu inogona kusvika 1 ~ 20.3V, asi inomira voltage uye Iyo simba idiki, yakakodzera kune yakaderera-simba maapplication.

PV anti-reverse diodes inoda kuve neanotevera maitiro:

1. High voltage: kazhinji inoda kudarika 1500V, nokuti iyo yakawanda photovoltaic array ichasvika kana kudarika 1000V.

2. Kuderedza simba rekushandisa, kureva, kupikisa (on-state impedance iduku sezvinobvira, kazhinji isingasviki 0.8 ~ 0.9V): Sezvo photovoltaic system inoda kuchengetedza kushanda kwepamusoro kwehurongwa hwose, simba. kushandiswa kweiyo anti-reverse diode mubhokisi rekubatanidza kunofanirwa kuve kudiki sezvinobvira.

3. Kupisa kwakanaka kwekupisa simba (kuderedza kupisa kwekushisa uye kupisa kwakanaka kunodiwa): Nemhaka yokuti nzvimbo yekushanda ye photovoltaic connecter box inowanzova isina kunaka, anti-reverse diode inoda kuva nehutano hwakanaka hwekupisa, uye kazhinji inodawo. funga nezvemamiriro ekunze akadai seGobi nenzvimbo yakati sandara.

2. Bypass Diode

Kana paine akawanda solar cell modules akabatana munhevedzano kuti aite sikweya sero array kana bazi re square cell array, imwe (kana 2 ~ 3) diodes inoda kubatanidzwa mune reverse parallel kune yakanaka uye yakaipa inobuda materminal yebhatiri rega rega. panel.Madhidhiyo akabatanidzwa mukuenderana kumativi ose echikamu anonzi bypass diodes.
Basa reiyo bypass diode nderekudzivirira chimwe chikamu muskweya array kana chimwe chikamu chechikamu kuti chisave nemumvuri kana kusashanda kumisa kugadzirwa kwemagetsi.Kurerekera kumberi kunogadzirwa kumigumo yese yechikamu bypass diode kuita iyo diode maitiro.Iyo tambo inoshanda ikozvino inonzvenga chikamu chinokanganisa uye inoyerera nepakati diode, iyo isingakanganise kugadzirwa kwesimba kwezvimwe zvinojairwa zvikamu.Panguva imwecheteyo, inodzivirirawo chikamu chakapfuura kubva pakukuvadzwa nepamusoro-soro mberi kana kupisa nekuda kwe "hot spot effect".
Bypass diode anowanzo kuisirwa zvakananga mubhokisi rejunction.Maererano nesimba rezvikamu uye nhamba yebheteri masero tambo, 1 kusvika ku3 diode yakaiswa.
Bypass diodes haidiwi mune chero mamiriro ezvinhu.Kana zvikamu zvishandiswa zvoga kana zvakafanana, hazvidi kuti zvibatanidzwe kune diode.Kune zviitiko apo nhamba yezvikamu mumutsara idiki uye nharaunda yekushanda yakanaka, zvinokwanisika kufunga kusashandisa bypass diode.

Nheyo yeDiode Dziviriro Circuit

Basa rakajairika re diode nderekungobvumira ikozvino kuti ipfuure munzira imwechete (inonzi kumberi bias) uye kuvharira munzira yekudzokera kumashure (inonzi reverse bias).

Kana iyo yekumberi voltage bias inogadzirwa, kudzvinyirirwa kwekunze kwemagetsi ekunze uye yakazvivaka yemagetsi munda inowedzera kupararira ikozvino kwevatakuri uye inokonzera kumberi ikozvino (kureva, chikonzero chemagetsi conduction).

Kana reverse voltage bias inogadzirwa, nzvimbo yemagetsi yekunze uye yakazvivaka yemagetsi munda inosimbiswa zvakare, ichigadzira reverse saturation ikozvino I0 iyo isina chekuita nereverse bias voltage mune imwe reverse voltage renji (ichi ndicho chikonzero ye-non-conductivity).

Kana kunze kune reverse voltage bias, munda wemagetsi wekunze uye nzvimbo yemagetsi yakazvivaka inosimbiswa zvakare, ichigadzira reverse saturation current I0 iyo yakasununguka kubva kune reverse bias voltage value mukati meimwe reverse voltage range.