Ndi magawo ati aukadaulo a solar photovoltaic inverters?

Inverter ndi chipangizo chosinthira mphamvu chopangidwa ndi zida za semiconductor, zomwe zimagwiritsidwa ntchito makamaka kutembenuza mphamvu ya DC kukhala mphamvu ya AC.Nthawi zambiri amapangidwa ndi boost circuit ndi inverter bridge circuit.Dongosolo lowonjezera limawonjezera mphamvu ya DC ya cell solar kupita kumagetsi a DC ofunikira pakuwongolera kutulutsa kwa inverter;inverter mlatho wozungulira umasintha mphamvu yamagetsi ya DC kukhala voteji ya AC yokhala ndi ma frequency wamba mofanana.

Inverter, yomwe imadziwikanso kuti mphamvu yamagetsi, ikhoza kugawidwa kukhala magetsi odziyimira pawokha komanso kugwiritsa ntchito gridi yolumikizidwa molingana ndi kugwiritsa ntchito inverter mu dongosolo lamagetsi la photovoltaic.Malinga ndi njira yosinthira ma waveform, imatha kugawidwa mu square wave inverter, step wave inverter, sine wave inverter, ndi kuphatikiza magawo atatu inverter.Kwa ma inverters omwe amagwiritsidwa ntchito pamakina olumikizidwa ndi gridi, amatha kugawidwa kukhala ma inverters amtundu wa transformer ndi ma inverters ocheperako malinga ngati pali chosinthira.Zida zazikulu zaukadaulo za solar photovoltaic inverter ndi:
1. Chovoteledwa linanena bungwe voteji
Inverter ya photovoltaic iyenera kutulutsa voteji yovoteledwa mkati mwa kusintha kovomerezeka kwa voliyumu yomwe yatchulidwa ya DC.Nthawi zambiri, mphamvu yamagetsi ikakhala imodzi ya 220v ndi magawo atatu 380v, kusinthasintha kwamagetsi kumatchulidwa motere.
(1) Mukathamanga mokhazikika, nthawi zambiri pamafunika kuti kusinthasintha kwamagetsi sikupitirire ± 5% ya mtengo wake.
(2) Pamene katundu wasinthidwa mwadzidzidzi, kupatuka kwa magetsi sikudutsa ± 10% ya mtengo wake.
(3) Pansi pazikhalidwe zogwirira ntchito, kusagwirizana kwa magawo atatu amagetsi otulutsa ndi inverter sikuyenera kupitilira 8%.
(4) Kusokonekera kwa mawonekedwe amagetsi (sine wave) wagawo la magawo atatu nthawi zambiri kumafunika kusapitilira 5%, ndipo kutulutsa kwa gawo limodzi kuyenera kupitilira 10%.
(5) Kupatuka kwa ma frequency a inverter linanena bungwe AC voteji kuyenera kukhala mkati mwa 1% pansi pazikhalidwe zogwirira ntchito.Kutulutsa kwamagetsi komwe kumatchulidwa mumtundu wa Gb/t 19064-2003 kuyenera kukhala pakati pa 49 ndi 51hz.
2. Katundu mphamvu chinthu
Kukula kwa mphamvu yonyamula katundu kumawonetsa kuthekera kwa inverter kunyamula katundu wochititsa chidwi kapena capacitive katundu.Pansi pa mawonekedwe a sine wave, mphamvu yonyamula katundu ndi 0.7 mpaka 0.9, ndipo mtengo wake ndi 0.9.Pankhani ya mphamvu yonyamula katundu, ngati mphamvu ya inverter ili yochepa, mphamvu yofunikira ya inverter idzawonjezeka, zomwe zimapangitsa kuti mtengo uwonjezeke.Panthawi imodzimodziyo, mphamvu yowonekera ya AC ya dongosolo la photovoltaic imawonjezeka, ndipo chigawo chamakono chikuwonjezeka.Ngati ndi yayikulu, kutayika kumawonjezeka, ndipo magwiridwe antchito amachepanso.
3. Chovoteledwa linanena bungwe panopa ndi oveteredwa linanena bungwe mphamvu
Ovoteledwa linanena bungwe panopa amatanthauza linanena bungwe panopa wa inverter mkati mwapadera katundu mphamvu factor range, unit ndi;oveteredwa mphamvu yotulutsa imatanthawuza kupangidwa kwa voliyumu yomwe idavoteledwa ndikuvotera pakalipano ya inverter pomwe mphamvu yotulutsa ndi 1 (ie katundu wodziyimira pawokha), unit ndi kva kapena kw.