Izibalo ze-Solar Inverter String Design
Isihloko esilandelayo sizokusiza ukubala inani eliphakeme / eliphansi lamamojula ngentambo yochungechunge ngalunye lapho uhlela uhlelo lwakho lwe-PV. Futhi i-Inverter Sizing iqukethe izingxenye ezimbili, i-voltage, kanye nosayizi wamanje. Ngesikhathi sokugcoba okungenzi-inverter kufanele ucabangele imikhawulo yokumiswa ehlukile, okufanele ibhekwe lapho usayizi wamandla welanga (idatha kusuka kumashidi wedatha ye-inverter kanye ne-solar panel). Futhi ngesikhathi sokuhlaziywa, i-coeffienty yokushisa iyinto ebalulekile.
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I-voltage / yamanje yokuthi amaphaneli elanga ancike ekushiseni kwamaseli, okuphezulu kakhulu okushisa okuphansi kwe-voltage / yamanje iphaneli yelanga izokhiqiza futhi ivelele. I-voltage / yamanje yohlelo izohlala iphakeme kakhulu ezimweni ezibandayo kakhulu futhi ngokwesibonelo, i-solar panl lokushisa coefflent ye-VOC liyadingeka ukuthi lisebenze lokhu. Nge-Mono ne-Poly Crystalline Solar Panels Ihlala iyisibalo esingesihle se-% / OC, njenge -0.33% / oc elangeni 72p-35f. Lolu lwazi lungatholakala ephepheni ledatha ye-Solar Panel. Sicela ubheke kuMdwebo 2.
2. Cha. Amaphaneli elanga entanjeni yentambo:
Lapho amaphaneli elanga anentambo enezintambo zochungechunge (okungukuthi iphaneli elilodwa elixhumene ne-negative yephaneli elilandelayo), ivolumu yephaneli ngalinye lingezwa ndawonye ukunikeza inani eliphelele lentambo. Ngakho-ke kudingeka sazi ukuthi mangaki amaphaneli elanga ohlose ukuwucingo ochungechungeni.
Uma unayo yonke imininingwane usukulungele ukuyifaka kwi-Solar Panel Voltage usayizi wokubala kanye nokubala kwamanje ukuze ubone ukuthi ukwakheka kwephaneli yelanga kuzohambisana nezidingo zakho.
I-Voltage Sizing:
1. I-MAX Panel's Voltage = Voc * (1+
2. Inombolo enkulu yamaphaneli elanga = max. I-voltage ye-voltage / max panel
Ukulinganisa kwamanje:
1. I-Min Panel yamanje = ISC * (1+ (Max.Temp-25) * Ukushisa okuhlanganisiwe (i-ISC)
2. Inani le-MAX lemicu = max. Faka amanje kwephaneli yamanje / amaminithi
3. Isibonelo:
I-Curitiba, idolobha laseBrazil, ikhasimende lilungele ukufaka i-Renac Power 5KW ezintathu isigaba sesigaba, imodeli ye-Solar Panel iyi-35.8v, i-Inverter MPPT Voltage Range ingu-160v-950v, kanye ne-voltage ephezulu melana ne-1000V.
I-Inverter ne-Datasheet:
I-Datasheet yeSolar Panel:
A) ugesi we-voltage
Emazingeni okushisa aphansi kakhulu (lapha -3 ℃), i-voltage-voltage voltage voltage voltage voltage v oc yamamojula emcudweni ngamunye akumele weqe inani eliphakeme lokufaka le-inverter (1 v):
1) Ukubalwa kwe-Open Circuit Voltage ku -3 ℃:
I-VOC (-3 ℃) = 45.5 * (1 + (- - 3-25) * (- 0.33%)) = 49.7 Volt
2) Ukubalwa kwenombolo ephezulu yamamojula emcudweni ngamunye:
N = I-MAX Input Voltage (1000 v) /49.7 Volt = 20.12 (Njalo Hlala phansi)
Inani lamaphaneli e-solar PV ngentambo ngayinye akumele lidlule amamojula angama-20 ngaphandle, endaweni ephezulu kakhulu (lapha, lapha i-35 ℃PP ye-vPP ngayinye kufanele ibe ngaphakathi kwe-pple power inverter (160V-950v):
3) Ukubalwa kwe-voltage volpage volp ephezulu kakhulu ku-35 ℃:
I-VMPP (35 ℃) = 45.5 * (1+ (35-25) * (- 0.33%)) = 44 VOLT
4) Ukubalwa kwenani eliphansi lamamojula m ngentambo ngayinye:
M = Min MPP Voltage (160 v) / 44 Volt = 3.64 (Njalo Round Up)
Inani lamaphaneli elanga le-PV ngentambo ngayinye kumele okungenani libe amamojula amane.
B) ukugcwala kwamanje
Isifunda esifushane samanje i-SC ye-PV Aray akumele yedlule okuvunyelwe kokufakwa kwamanje kwe-solar power inverter:
1) Ukubalwa kwendawo ephezulu ku-35 ℃:
ISC (35 ℃) = ((1+ (10 * (TCSC / 100))) * ISC) = 9.22 * (1+-25 (1.06%) (- 0.06%)) = 9.16 a
2) Ukubalwa kwenombolo ephezulu yezintambo:
P = Ukufakwa okuphezulu kwamanje (12.5a) /9.16 A = 1.36 ntambo (njalo uzungeza)
I-PV Aray akumele yedlule intambo eyodwa.
Phawula:
Lesi sinyathelo asidingeki kwi-Inverter MpPT ngentambo eyodwa kuphela.
C) Isiphetho:
1. I-PV Generator (i-PV ARRAY) iquketheintambo eyodwa, exhunywe esigabeni sesithathu 5kw inverter.
2. Emnyakeni ngamunye amaphaneli elanga axhunyiwe kufanele abeNgaphakathi kwamamojula angama-4- 20.
Phawula:
Njengoba i-MPPT Voltage enhle kakhulu ye-MPPT yesigaba sesigaba ezintathu icishe ibe ngo-630v (ama-ppt angcono kakhulu we-MPPT wesigaba esisodwa esiseduze kwe-360V), ukusebenza kahle kwe-inverter kuphezulu kakhulu ngalesi sikhathi. Ngakho-ke kunconywa ukubala inani lamamojula elanga ngokuya nge-MPPT Voltage enhle kakhulu:
N = I-MPPT VOC / VOC enhle kakhulu (voc (3 ° C) = 756V / 49.7V = 15.21
Iphaneli ye-Crystal Phenel engcono kakhulu ye-MPPT = I-MPPT Voltage X 1.2 = 630 × 1.2 = 756V
Iphaneli yePolycrystal Best MpPT VOC = I-MPPT Voltage X 1.2 = 630 × 1.3 = 819V
Ngakho-ke nge-renac 33-5K-DT Amaphaneli wokufaka wokufaka welanga anconyiwe angamamojula ayi-16, futhi adinga nje ukuxhunywa intambo eyodwa 16x330w = 5280w.
4. Isiphetho
Ukufakwa kwe-Inverter Hhayi amaphaneli elanga kuya kuncike ekushiseni kwamaseli nokushisa okulinganiselwe. Ukusebenza okuhle kakhulu kususelwa ku-voltage enhle kakhulu ye-inverter.