Gabatarwa

Duk wanda ke aiki a PV ya san cewa sel da aka yanka rabin sun riga sun zama ruwan dare a ko'ina. Yanke kwata, mataki na gaba, ana tallata shi a matsayin 'ƙananan asarar layi, mafi girman fitarwa.' Amma yawancin mutane sun san da'awar ne kawai, ba dalilin da ke bayanta ba. A ina ne ainihin sel da aka yanke kwata ke rage asararsa? Kuma idan ƙananan guntuwa suna nufin ƙananan halin yanzu, me ya sa masana'antar ba ta yanke zuwa guntu 16 ko 32 ba? Bari mu bar tsarukan lissafi masu yawa kuma mu yi amfani da kwatance masu sauƙi don fahimtar tunani, riba, da rashin lahani na PV yanke kwata a lokaci guda.

Ƙa'ida ta Asali: Dokar Murabba'in Halin Yanzu Bayan Yanke Sel

Duk lokacin da halin yanzu ke gudana ta hanyar madugu na PV (ribbon, busbar, gridline), asara ba makawa. Tsarin asarar wutar lantarki shine:

P = I²R (asarar wutar lantarki = murabba'in halin yanzu × juriya)

Murabba'in shine babban abu a nan. Asara da halin yanzu ba sa tafiya tare a layi madaidaiciya. Ƙananan raguwa a halin yanzu yana kawo babban raguwa a asara.

1. Cikakken sel → rabin sel (module yanke rabin)

Halin yanzu a kowane guntu ya ragu zuwa 1/2 na asali, don haka asara = (1/2)² = 1/4. Asarar layi ta faɗi da 75% kai tsaye. Wannan shine babban dalilin da ya sa modules yanke rabin suka mamaye.

2. Yanke rabin ya haɓaka zuwa yanke kwata

Yanzu kowane yanki yana raguwa zuwa 1/4 na girman tantanin halitta na asali, don haka asara = (1/4)² = 1/16. Idan aka kwatanta da tantanin halitta cikakke, asarar ciki ta ragu da fiye da 90%. Idan aka kwatanta da rabin yanke, asarar ta sake raguwa sosai.

Yanke yana kawo fa'ida kuma. Ƙananan sel suna nufin ribbon ɗin da ya dace zai iya zama sirara. Siraran ribbon yana rufe ƙarancin fuskar tantanin halitta, don haka asarar inuwa tana raguwa, tantanin halitta yana ɗaukar ƙarin haske, kuma fitarwa ta ɗan ƙaru.

A wannan lokacin mutane da yawa suna tambaya: idan ƙananan yanki suna nufin ƙaramin wutar lantarki da ƙarancin asara, me yasa masana'antar ba ta yanke sel zuwa 16, 32, har ma da 64 yanki?

Amsar a bayyane take: yawan yanke ba koyaushe yake da kyau ba. Yanke kwata yana ɗauke da farashi da asarar da ba za ku iya watsi da su ba.

Ganin shi: A ina ne Ragewar Asarar Layi A zahiri ke faruwa?

Mutane da yawa sun san cewa yanke kwata yana da ƙarancin asarar layi, amma ba za su iya nuna inda raguwar take ba. Ka yi tunanin hanyar wutar lantarki kamar ruwa yana gudana ƙasa, kuma komai ya fito fili.

Wutar da aka samar ta hasken rana tana kama da ruwan sama da ke sauka daga kan dutse. Hanyar gaba daya ta ratsa matakai 5: PN junction → layin yatsa (rafi) → layin busbar (karamin kogi) → ribbon (babban kogi) → busbar (babban kogi). Kowane sashi yana haifar da asara.

1. Bangaren da ba ya canzawa: asarar layin grid

Ko da yawa guda ne aka yanke tantanin, jimillar hasken da ke buga kowane yanki na tantanin ya kasance iri daya. Gudun wutar da sauri a cikin layukan grid ba sa canzawa, don haka asarar layin yatsa da busbar ba ta raguwa.

2. Bangaren da ke raguwa sosai: ribbon tsakanin tantanin

Tantanin cikakke: wutar daga tantanin gaba daya tana shiga ribbon guda, wuta mai yawa da asara mai yawa.

Tantanin da aka yanke kwata: kashi 1/4 na yankin tantanin ne kawai ke gudana ta kowane ribbon, don haka wutar ribbon ta ragu sosai.

Bayanan masana'antu sun nuna asarar ribbon tana kaiwa kashi 60% na jimillar asarar cikin gida na panel. Ta hanyar rage wutar ribbon, kwata-kwata yana ceton babban kaso na wannan asarar wutar.

Rashin Boye: Asarar Busbar Ta Cinye Ribar

Ribbon loss yana raguwa sosai, wanda yake kama da duk wani abu mai kyau. Amma quarter-cut yana buƙatar sabon tsarin da'ira, kuma hakan yana kawo rashin amfani guda biyu.

1. Tsawon busbar yana tashi sosai

Wani module na quarter-cut yana buƙatar ƙarin busbars. Jimlar tsawon busbar yana ƙaruwa daga mita 3.4 zuwa mita 8, kusan ninki biyu, kuma farashin kayan aiki yana ƙaruwa tare da shi.

2. Sabon asarar busbar yana soke wani ɓangare na ribar

Asarar busbar tana kaiwa kashi 20% na jimlar asarar module. Da zarar an tsawaita, jimlar asarar layin busbar tana hawa da kashi 50%.

Lissafi mai sauri: kusan kashi 40% na abin da quarter-cut ke ajiyewa akan ribbon yana dawowa ta hanyar ƙarin asarar busbar. Sakamakon fitarwa na gaske ya zama ƙasa da ban mamaki fiye da yadda ka'idar ta nuna.

Ra'ayin Masana'antu: Shin Quarter-Cut Ya Canza Aiwatarwa?

Ga cikakken fa'idodi da rashin amfanin modules na quarter-cut:

Fa'idodi

• Ta hanyar amfani da dokar murabba'in halin yanzu, asarar layin ribbon tana raguwa sosai, don haka fitarwa na ka'ida ya fi na cikakken cell da half-cut modules.

• Yana haɗuwa da ribbon mai sirara don rage shading na gaba da haɓaka yankin karɓar haske na cell.

Rashin amfani

• Canjin tsarin kewayawa, amfani da busbar da tsawonsa ya ninka, kuma farashin kayan aiki ya tashi.

• Sabuwar asarar busbar tana biyan mafi yawan tanadin wutar lantarki, don haka ainihin riba tana da iyaka.

• Babu yanke mara iyaka: yawan yanke, yawan rikitarwar gridlines, solder joints, da tsarin busbar, kuma ƙarin asara da farashin kera suna wuce gurɓataccen tanadi.

Mu Yi Magana

Quarter-cut mataki ne na ci gaba daga half-cut. Rage asarar ka'ida yana da kyau, amma farashin busbar da ƙarin asara suna sanya iyaka akan ainihin riba. A cikin rarraba PV da manyan tsire-tsire na ƙasa, kuna ganin quarter-cut modules suna da amfani? Saka ra'ayoyinku a ƙasa.

#SolarTech #QuarterCutModule #PVLineLoss

Ra'ayin Ooitech

Abin da wannan ke nuna shi ne cewa ribar module tana rayuwa ko mutuwa a matakin haɗin kai, ba kawai a cikin cell ba. Lokacin da kuke tsara faɗin ribbon da hanyar busbar akan layin quarter-cut, daidaiton tabber-stringer da layup suna yanke shawara ko kuna samun wannan I² tanadi ko kuma ku mayar da shi ta hanyar busbar masu tsayi. Mun ga wannan a kan layin module na Ooitech, inda ƙirar cell ɗaya za ta iya canza watts da yawa dangane da yadda tsarin stringing da bussing yake. Idan kuna son ganin yadda waɗannan matakan ke haɗuwa a kan filin samarwa na gaske, tashar YouTube ɗinmu a www.youtube.com/ooitech yana da yawan layin layi da ya cancanci kallo.