Inverter ndi mtundu wa chipangizo chosinthira mphamvu chomwe chimapangidwa ndi zida za semiconductor, zomwe zimagwiritsidwa ntchito makamaka kusinthira mphamvu ya DC kukhala mphamvu ya AC, yomwe nthawi zambiri imakhala ndi dera lothandizira komanso gawo la mlatho wa inverter.Dongosolo lothandizira limakulitsa mphamvu ya DC ya cell solar kupita kumagetsi a DC ofunikira ndi inverter control control;Dera la mlatho wa inverter limasintha ma voliyumu owonjezera a DC kukhala ma frequency wamba a AC voltage mofanana.
Inverter, yomwe imadziwikanso kuti magetsi owongolera, imatha kugawidwa m'mitundu iwiri yamagetsi odziyimira pawokha komanso olumikizidwa ndi gululi malinga ndi kugwiritsa ntchito inverter mu dongosolo lamagetsi la photovoltaic.Malinga ndi mawonekedwe a waveform modulation, imatha kugawidwa mu square wave inverter, step wave inverter, sine wave inverter ndi kuphatikiza magawo atatu inverter.Pakuti inverter ntchito gululi olumikizidwa dongosolo, malinga ndi kukhalapo kapena kusowa kwa thiransifoma akhoza kugawidwa mu thiransifoma mtundu inverter ndi thiransifoma mtundu inverter.Zida zazikulu zaukadaulo za solar photovoltaic inverter ndi:
1. Chovoteledwa linanena bungwe voteji
Inverter ya pv iyenera kutulutsa voteji yomwe idavoteledwa mkati mwamitundu yovomerezeka yamagetsi amtundu wa dc.Nthawi zambiri, mphamvu yamagetsi ikakhala imodzi ya 220v ndi magawo atatu 380v, kusinthasintha kwamagetsi kumakhala ndi izi.
(1) Pogwira ntchito mokhazikika, kusinthasintha kwamagetsi nthawi zambiri kumafunika kusapitilila ± 5% ya mtengo wake.
(2) Kupatuka kwamagetsi sikuyenera kupitirira ± 10% ya mtengo wake ngati kusintha kwa katundu.
(3) Pansi pazikhalidwe zogwirira ntchito, kuchuluka kwa magawo atatu amagetsi amagetsi a inverter sayenera kupitirira 8%.
(4) Kusokonezeka kwa magawo atatu amagetsi otulutsa magetsi (sine wave) sikuyenera kupitirira 5%, ndipo kutulutsa kwa gawo limodzi kuyenera kupitirira 10%.
(5) The inverter linanena bungwe AC voteji pafupipafupi mikhalidwe yachibadwa ntchito kupatuka kwake ayenera kukhala mkati 1%.Ma frequency a voliyumu otuluka omwe atchulidwa mu standard standard gb/t 19064-2003 akuyenera kukhala pakati pa 49 ndi 51hz.
2, katundu mphamvu chinthu
Mphamvu yamagetsi ikuwonetsa mphamvu ya inverter yokhala ndi inductive katundu kapena capacitive load.Pansi pamikhalidwe ya sine wave, mphamvu yonyamula katundu imachokera ku 0.7 mpaka 0.9, ndipo mlingo ndi 0.9.Pankhani ya mphamvu yonyamula katundu, ngati mphamvu ya inverter ili yochepa, mphamvu yosinthira yofunikira idzawonjezeka, zomwe zimabweretsa kuwonjezeka kwa mtengo, panthawi imodzimodziyo, mphamvu yowonekera ya photovoltaic system AC loop ikuwonjezeka, loop ikuchulukirachulukira, kutayika kudzawonjezeka mosalephera, ndipo magwiridwe antchito amachepa.
3. Chovoteledwa linanena bungwe panopa ndi mphamvu
Zovoteledwa zaposachedwa zimatanthawuza kutulutsa komwe kumachokera kwa inverter mkati mwa gawo lamphamvu lamphamvu (unit: A).Kuthekera kovotera kumapangidwa ndi voliyumu yomwe idavoteledwa ndikuvotera pakali pano cha inverter pomwe mphamvu yotulutsa ndi 1 (ie, katundu wokwanira) mu KVA kapena kW.
Nthawi yotumiza: Aug-20-2022
