Solar Inverter

Photovoltaic inverter (PV inverter kapena solar inverter) imatha kusintha ma voliyumu a DC opangidwa ndi ma solar a photovoltaic (PV) kukhala inverter yokhala ndi ma frequency a mains frequency (AC) a mains frequency, omwe amatha kubwezeredwa ku makina otumizira magetsi, kapena zoperekedwa ku gridi yogwiritsira ntchito gridi.Photovoltaic inverter ndi imodzi mwazinthu zofunika kwambiri za dongosolo (BOS) mu photovoltaic array system, yomwe ingagwiritsidwe ntchito ndi zida zonse zamagetsi za AC.Ma inverters a solar ali ndi ntchito zapadera zopangira ma photovoltaic arrays, monga kutsata kwamphamvu kwambiri komanso chitetezo chazilumba.

Ma inverters a solar akhoza kugawidwa m'magulu atatu awa:
Ma inverters odziyimira okha:Amagwiritsidwa ntchito pamakina odziyimira pawokha, gulu la photovoltaic limalipira batire, ndipo inverter imagwiritsa ntchito voliyumu ya DC ya batri ngati gwero lamphamvu.Ma inverter ambiri oyima okha amaphatikizanso ma charger omwe amatha kulipiritsa batire kuchokera ku mphamvu ya AC.Nthawi zambiri, ma inverters oterowo samakhudza gululi ndipo safuna chitetezo cha pachilumba.

Ma inverters a grid tie:Mphamvu yotulutsa ya inverter imatha kubwezeredwa kumagetsi amagetsi a AC, chifukwa chake mafunde a sine ayenera kukhala ofanana ndi gawo, ma frequency ndi voteji yamagetsi.Inverter yolumikizidwa ndi grid ili ndi mapangidwe achitetezo, ndipo ngati sichilumikizidwa ndi magetsi, zotulukazo zizingozimitsidwa.Ngati mphamvu ya gridi ikulephera, inverter yolumikizidwa ndi grid ilibe ntchito yothandizira magetsi.

Ma inverters osunga batri (ma inverters osunga batri)ndi ma inverter apadera omwe amagwiritsa ntchito mabatire ngati gwero la mphamvu zawo ndipo amagwirizana ndi chojambulira cha batri kuti azilipiritsa mabatire.Ngati pali mphamvu yochulukirapo, imawonjezeranso kumagetsi a AC.Mtundu uwu wa inverter ukhoza kupereka mphamvu ya AC pa katundu wotchulidwa pamene mphamvu ya gridi ikulephera, choncho imayenera kukhala ndi ntchito yoteteza chitetezo.
Nkhani yayikulu: Kutsata kwamphamvu kwambiri
Ma inverters a Photovoltaic amagwiritsa ntchito ukadaulo wa Maximum Power Point Tracking (MPPT) kuti apeze mphamvu yochulukirapo kuchokera ku mapanelo adzuwa.Pali mgwirizano wovuta pakati pa kuwala kwa dzuwa, kutentha ndi kukana kwathunthu kwa maselo a dzuwa, kotero kuti kutulutsa bwino kudzasintha kosasintha, komwe kumatchedwa curve-voltage curve (IV curve).Cholinga cha kutsata kwamphamvu kwambiri ndikupangitsa kukana kwa katundu (kwa module ya solar) kuti mupeze mphamvu yayikulu molingana ndi kutulutsa kwa module ya solar m'malo aliwonse.
Mawonekedwe amtundu (FF) a cell solar kuphatikiza ndi voteji yake yotseguka (VOC) ndi yachidule yapano (ISC) idzatsimikizira mphamvu yayikulu ya cell solar.Chojambulacho chimatanthauzidwa ngati chiŵerengero cha mphamvu yaikulu ya selo la dzuwa logawidwa ndi mankhwala a VOC ndi ISC.

Pali ma aligorivimu atatu osiyanasiyana pakutsata kwamphamvu kwambiri:kusokoneza-ndi-kuyang'ana, kuwonjezereka kwa kayendetsedwe kake, ndi magetsi osasintha.Awiri oyambirira nthawi zambiri amatchedwa "kukwera mapiri".Njirayi ndikutsata mapindikidwe a voteji motsutsana ndi mphamvu.Ngati igwera kumanzere kwa malo okwera kwambiri, onjezani voteji, ndipo ngati igwera kumanja kwa malo apamwamba kwambiri, chepetsani voteji.

Zowongolera ma charger zitha kugwiritsidwa ntchito ndi mapanelo adzuwa komanso zida za DC.Chowongoleredwacho chimatha kutulutsa mphamvu yokhazikika ya DC, kusunga mphamvu zochulukirapo mu batri, ndikuwunika kuchuluka kwa batire kuti musachulukitse kapena kutsitsa.Ngati ma module ena okwera mtengo amathanso kuthandizira MPPT.Inverter imatha kulumikizidwa ndi zotulutsa zowongolera dzuwa, ndiyeno inverter imatha kuyendetsa katundu wa AC.