Mu dongosolo la photovoltaic, magetsi opangidwa amachokera ku ma modules a photovoltaic kupita ku inverter, yomwe imasintha panopa kuti ikhale yosinthika.Mphamvu ya AC iyi imagwiritsidwa ntchito kupatsa mphamvu monga zida zamagetsi kapena kuyatsa kapena kubwezeredwa mu gridi.Komabe, nthawi zina, kutuluka kwa magetsi kumatha kusinthidwa, makamaka pamene photovoltaic system imapanga magetsi ambiri kuposa momwe katunduyo amafunira.Pankhaniyi, ngati PV module ikupangabe mphamvu ndipo katunduyo amadya mphamvu pang'ono kapena alibe mphamvu, pangakhale kusintha kwaposachedwa kuchokera ku katundu kubwerera ku gridi, kuchititsa ngozi za chitetezo ndi kuwonongeka kwa zipangizo.
Pofuna kupewa izi, makina a photovoltaic ali ndi zida zotsutsana ndi reverse panopa.Zidazi zimatsimikizira kuti zamakono zikuyenda motsatira njira yomwe mukufuna, kuchokera ku photovoltaic module kupita ku katundu kapena grid.Amalepheretsa kubwereranso kulikonse komanso kuteteza machitidwe ndi zida kuti zisawonongeke.Pophatikizira magwiridwe antchito apano, oyendetsa makina a PV amatha kuonetsetsa kuti akugwira ntchito motetezeka komanso moyenera, kuthetsa zoopsa zomwe zikuchitika, ndikutsata miyezo ndi malamulo achitetezo.
Mfundo yayikulu yopewera kubweza kwa inverter ndikuzindikira voteji ndi ma frequency a gridi yamagetsi munthawi yeniyeni kuti muzindikire kuwongolera ndi kuwongolera kwa inverter.Zotsatirazi ndi njira zingapo zodziwira inverter anti-backflow:
Kuzindikira kwa DC: Inverter imazindikira mwachindunji mayendedwe ndi kukula kwazomwe zikuchitika kudzera pa sensa yamakono kapena chojambulira chapano, ndikusintha mwamphamvu mphamvu yotulutsa inverter malinga ndi zomwe zapezeka.Ngati mkhalidwe wamakono upezeka, inverter idzachepetsa kapena kusiya kupereka mphamvu ku gridi.
Anti-reverse current device: Chipangizo chamakono chotsutsana ndi reverse chomwe chilipo nthawi zambiri chimakhala chipangizo chamagetsi chomwe chimazindikira momwe zinthu zilili pano ndikuchitapo kanthu moyenera.Kawirikawiri, chipangizo chotetezera kumbuyo chimayang'anitsitsa mphamvu yamagetsi ndi mafupipafupi a gridi ndipo, ikazindikira kubwereranso, nthawi yomweyo imasintha mphamvu yotulutsa inverter kapena kuimitsa mphamvu.Chipangizo choletsa kubweza kumbuyo chingagwiritsidwe ntchito ngati gawo lowonjezera kapena chigawo cha inverter, chomwe chingasankhidwe ndikuyika molingana ndi zofunikira za inverter.
Zida zosungiramo mphamvu: Zida zosungiramo mphamvu zimatha kuthandizira kuthetsa vuto la inverter.Mphamvu yopangidwa ndi inverter ikapitilira kuchuluka kwa gridi, mphamvu yochulukirapo imatha kusungidwa mu chipangizo chosungira mphamvu.Zida zosungiramo mphamvu zimatha kukhala mapaketi a batri, ma supercapacitors, zida zosungira ma hydrogen, etc. Pamene gridi ikufuna mphamvu zowonjezera, chipangizo chosungira mphamvu chikhoza kumasula mphamvu yosungidwa ndikuchepetsa kudalira pa gridi, motero kulepheretsa kubwereranso.
Kuzindikira Voltage ndi Frequency: Inverter sikuti imangozindikira zomwe zikuchitika kuti zitsimikizire ngati zikuchitika komanso kuyang'anira magetsi a gridi ndi ma frequency kuti azindikire anti-reverse current.Pamene inverter imayang'ana kuti magetsi a gridi kapena ma frequency achoka pagawo lokhazikitsidwa, imachepetsa kapena kuyimitsa kupereka mphamvu ku gululi kuti ipewe mafunde obwerera.
Tikumbukenso kuti njira yeniyeni kuzindikira inverter backflow kupewa adzasiyana malinga mtundu ndi chitsanzo cha inverter.Chifukwa chake, tikulimbikitsidwa kuti mukamagwiritsa ntchito inverter, werengani buku lazamankhwala ndi bukhu la opareshoni mosamala kuti mumvetsetse kukwaniritsidwa kwapadera ndi njira yogwirira ntchito ya anti-reverse pano.
Nthawi yotumiza: Jul-21-2023