Imirasire y'izuba Ikurikiranyabihe Kubara
Ingingo ikurikira izagufasha kubara umubare ntarengwa / ntarengwa wa modul kumurongo wikurikiranya mugihe utegura sisitemu ya PV.Ingano ya inverter igizwe n'ibice bibiri, voltage, hamwe nubunini bugezweho.Mugihe ingano ya inverter ugomba kuzirikana imipaka itandukanye, igomba kwitabwaho mugihe ingana nizuba ryizuba (Data kuva inverter hamwe nurupapuro rwizuba).Kandi mugihe kingana, coefficient yubushyuhe nikintu gikomeye.
1. Coefficient yubushyuhe bwizuba bwa Voc / Isc:
Umuvuduko / amashanyarazi akoresha imirasire y'izuba akora biterwa nubushyuhe bwakagari, uko ubushyuhe buri hejuru niko voltage / umuyoboro wizuba uzabyara kandi nibindi.Umuvuduko / umuyoboro wa sisitemu uzahora uri hejuru cyane mubihe bikonje kandi kurugero, coefficente yubushyuhe bwizuba bwa Voc irasabwa gukora ibi.Hamwe nimirasire yizuba ya mono na poly kristalline burigihe ni mubi% / oC, nka -0.33% / oC kuri Zuba 72P-35F.Aya makuru murayasanga kurupapuro rwizuba rukora impapuro.Nyamuneka reba ku gishushanyo cya 2.
2. Oya ya panneaux solaire ikurikiranye:
Iyo imirasire y'izuba yashizwe mumurongo wuruhererekane (ibyo nibyiza byumwanya umwe uhujwe nibibi bya panne ikurikira), voltage ya buri panel yongeweho hamwe kugirango itange umurongo wuzuye wa voltage.Tugomba rero kumenya umubare wizuba uteganya gukoresha murukurikirane.
Mugihe ufite amakuru yose witeguye kuyinjiza mumashanyarazi akurikira yumuriro wizuba hamwe nubunini buringaniye kugirango urebe niba igishushanyo mbonera cyizuba kizahuza nibyo usabwa.
Ingano ya voltage:
1. Umuvuduko mwinshi wa voltage = Voc * (1+ (Min.temp-25) * coefficient yubushyuhe (Voc)
2. Umubare ntarengwa wizuba ryizuba = Byinshi.kwinjiza voltage / Umuyoboro wa Max
Ingano iriho:
1. Min panel ya none = Isc * (1+ (Max.temp-25) * coefficient yubushyuhe (Isc)
2. Umubare munini wimirongo = Ikirenga.Iyinjiza / Min panel ya none
3. Urugero:
Curitiba, umujyi wa Berezile, umukiriya yiteguye gushyiramo Renac Power 5KW icyiciro cya inverter imwe, gukoresha imirasire y'izuba ni module 330W, ubushyuhe bwo hasi bwumujyi ni -3 ℃ kandi ubushyuhe ntarengwa ni 35 ℃, burakinguye Umuyoboro w'amashanyarazi ni 45.5V, Vmpp ni 37.8V, inverter ya MPPT ya voltage ni 160V-950V, kandi voltage ntarengwa irashobora kwihanganira 1000V.
Inverter na datasheet:
Imirasire y'izuba:
A) Ingano ya voltage
Ku bushyuhe buke (ahantu hashingiwe, hano -3 ℃), gufungura-umuzunguruko wa voltage V oc ya modules muri buri mugozi ntigomba kurenza ingufu nini zinjiza za inverter (1000 V):
1) Kubara Umuyoboro Ufunguye Umuzunguruko kuri -3 ℃:
VOC (-3 ℃) = 45.5 * (1 + (- 3-25) * (- 0.33%)) = 49.7 Volt
2) Kubara N umubare ntarengwa wa module muri buri murongo:
N = Umuvuduko mwinshi winjiza (1000 V) / 49,7 Volt = 20.12 (burigihe uzenguruka)
Umubare w'amashanyarazi akomoka ku mirasire y'izuba muri buri mugozi ntugomba kurenza modul 20 Usibye, ku bushyuhe bwo hejuru (ahantu hashingiwe, hano 35 ℃), umuyagankuba wa MPP VMPP ya buri mugozi ugomba kuba uri muri MPP urwego rwa inverteri y'izuba (160V– 950V):
3) Kubara amashanyarazi ntarengwa ya VMPP kuri 35 ℃:
VMPP (35 ℃) = 45.5 * (1+ (35-25) * (- 0.33%)) = 44 Volt
4) Kubara umubare ntarengwa wa module M muri buri mugozi:
M = Min MPP ya voltage (160 V) / 44 Volt = 3.64 (burigihe hejuru)
Umubare wizuba PV muri buri mugozi ugomba kuba byibuze module 4.
B) Ingano ya none
Umuyoboro mugufi wa I SC ya PV array ntigomba kurenza ibyinjira byemewe byinjira mumashanyarazi yizuba:
1) Kubara Ibihe ntarengwa kuri 35 ℃:
ISC (35 ℃) = ((1+ (10 * (TCSC / 100))) * ISC) = 9.22 * (1+ (35-25) * (- 0.06%)) = 9.16 A
2) Kubara P umubare ntarengwa wimirongo:
P = Umubare ntarengwa winjiza (12.5A) /9.16 A = imirongo 1.36 (burigihe uzenguruka)
PV array ntigomba kurenza umurongo umwe.
Icyitonderwa:
Iyi ntambwe ntabwo isabwa kuri inverter MPPT hamwe numurongo umwe gusa.
C) Umwanzuro:
1. Imashini ya PV (PV array) igizwe naumugozi umwe, ihujwe na feri eshatu 5KW inverter.
2. Muri buri mugozi imirasire y'izuba ihujwe igomba kubamuri 4-20.
Icyitonderwa:
Kubera ko umuyagankuba mwiza wa MPPT ya feri eshatu inverter ari hafi 630V (voltage nziza ya MPPT ya feri imwe ihinduranya igera kuri 360V), imikorere yimikorere ya inverter niyinshi muriki gihe.Birasabwa rero kubara umubare wizuba ryizuba ukurikije voltage nziza ya MPPT:
N = MPPT nziza VOC / VOC (-3 ° C) = 756V / 49.7V = 15.21
Ikibaho kimwe cya kristu nziza MPPT VOC = Umuyoboro mwiza wa MPPT x 1.2 = 630 × 1.2 = 756V
Ikibaho cya polycristal MPPT VOC = Umuyoboro mwiza wa MPPT x 1.2 = 630 × 1.3 = 819V
Kuri Renac rero ibyiciro bitatu inverter R3-5K-DT isabwa kwinjiza imirasire y'izuba ni modules 16, kandi igomba gusa guhuzwa umugozi umwe 16x330W = 5280W.
4. Umwanzuro
Inverter yinjiza Oya yumuriro wizuba biterwa nubushyuhe bwakagari hamwe na coefficient yubushyuhe.Imikorere myiza ishingiye kuri voltage nziza ya MPPT ya inverter.