Solar Inverter String Dhizaini Maverengero
Chinyorwa chinotevera chichakubatsira iwe kuverenga iyo yakanyanya / shoma nhamba yemamodule pane yakatevedzana tambo paunenge uchigadzira yako PV system. Uye iyo inverter saizi ine zvikamu zviviri, voltage, uye saizi yazvino. Munguva ye inverter sizing iwe unofanirwa kufunga nezve akasiyana magadzirirwo emiganhu, ayo anofanirwa kutariswa paunenge uchiisa solar simba inverter (Data kubva kune inverter uye solar panel data sheets). Uye panguva yekuyera, tembiricha coefficient chinhu chakakosha.
1. Solar panel tembiricha coefficient of Voc / Isc:
Iyo voltage / ikozvino iyo solar panels inoshanda pairi zvinoenderana nekupisa kwesero, iyo yakakwirira tembiricha inodzikira voltage / ikozvino solar panel inoburitsa uye vise versa. Iyo voltage / yazvino yesystem inogara iri pairi yepamusoro-soro mumamiriro ekutonhora zvakanyanya uye semuenzaniso, iyo solar panel tembiricha coefficient yeVoc inodiwa kuti uite izvi kunze. Iine mono uye poly crystalline solar panels inogara iri negative %/oC nhamba, senge -0.33%/oC pa SUN 72P-35F. Ruzivo urwu runogona kuwanikwa pane solar panel vagadziri data sheet. Ndokumbira utarise mufananidzo 2.
2. Nhamba ye solar panels munhevedzano tambo:
Kana mapaneru ezuva akaiswa waya mumatambo akateedzana (ndiyo yakanaka yepaneru imwe yakabatana kune iyo yakaipa yepaneru inotevera), iyo voltage yepaneru yega yega inowedzerwa pamwe chete kupa iyo yakazara tambo voltage. Naizvozvo isu tinofanirwa kuziva kuti mangani ma solar panels aunoda kuisa waya munhevedzano.
Kana iwe uine ruzivo rwese iwe wagadzirira kuiisa mune inotevera solar panel voltage sizing uye ikozvino saizi macalculation kuti uone kana solar panel dhizaini inoenderana nezvaunoda.
Kukura kwemagetsi:
1.Max panel's voltage =Voc*(1+(Min.temp-25)*temperature coefficient(Voc)
2. Nhamba huru yeSolar panels=Max. input voltage / Max panel's voltage
Kukura Kwezvino:
1. Min panel's current =Isc*(1+(Max.temp-25)*temperature coefficient(Isc)
2. Nhamba huru yetambo=Max. kupinza zvazvino / Min panel's ikozvino
3. Muenzaniso:
Curitiba, guta reBrazil, mutengi akagadzirira kuisa imwe Renac Power 5KW matatu phase inverter, iyo inoshandisa solar panel modhi ndeye 330W module, tembiricha yepasi peguta ndeye -3 ℃ uye tembiricha yepamusoro i35 ℃, iyo yakavhurika. circuit voltage is 45.5V, Vmpp 37.8V, inverter MPPT voltage range iri 160V-950V, uye simba guru rinogona kumira. 1000V.
Inverter uye database:
Solar Panel Database:
A) Kukura kwemagetsi
Patembiricha yakaderera (nzvimbo inotsamira, pano -3 ℃ ), iyo yakavhurika-circuit voltage V oc yemamodule mutambo yega yega haifanirwe kudarika yakanyanya kupinza voltage ye inverter (1000 V):
1) Kuverengera kweiyo Open Circuit Voltage pa -3 ℃:
VOC (-3℃)= 45.5*(1+(-3-25)*(-0.33%)) = 49.7 Volt
2) Kuverengera kweN iyo yakawanda nhamba yemamodule mutambo yega yega:
N = Magetsi anopinza (1000 V)/49.7 Volt = 20.12 (anogara achitenderera pasi)
Huwandu hwe solar PV mapaneru mutambo yega yega haifanirwe kudarika makumi maviri modules Kunze kwe, patembiricha yepamusoro (nzvimbo inotsamira, pano 35 ℃), iyo MPP voltage VMPP yetambo yega yega inofanirwa kunge iri mukati meMPP renji ye solar power inverter (160V- 950V):
3) Kuverengera kweiyo yakanyanya Power Voltage VMPP pa35 ℃:
VMPP (35℃)=45.5*(1+(35-25)*(-0.33%))= 44 Volt
4) Kuverenga kwehuwandu hushoma hwemamodules M mutambo yega yega:
M = Min MPP voltage (160 V)/ 44 Volt = 3.64 (nguva dzose inotenderera)
Nhamba ye solar PV panels mutambo yega yega inofanira kunge iine ma modules mana.
B) Kukura Kwezvino
Iyo pfupi yedunhu ikozvino I SC yePV array haifanire kudarika inobvumidzwa yakanyanya Kupinza ikozvino ye solar power inverter:
1) Kuverengera kweiyo yakanyanya Kurizvino pa35 ℃:
ISC (35℃)= ((1+ (10 * (TCSC /100))) * ISC ) = 9.22*(1+(35-25)*(-0.06%))= 9.16 A
2) Kuverengera kweP huwandu hwakanyanya hwetambo:
P = Yakanyanya kupinza yazvino (12.5A)/9.16 A = 1.36 tambo (yakatenderedza pasi)
PV array haifanire kudarika tambo imwe.
Cherechedza:
Iyi nhanho haidiwe kune inverter MPPT ine tambo imwe chete.
C) Mhedziso:
1. PV jenareta (PV array) inosanganisiratambo imwe, iyo yakabatana kune matatu chikamu 5KW inverter.
2. Mutambo imwe neimwe iyo yakabatana solar panels inofanira kuvamukati me4-20 modules.
Cherechedza:
Sezvo yakanakisa MPPT voltage yetatu phase inverter iri kutenderedza 630V (yakanakisa MPPT voltage yeimwe phase inverter iri kutenderera 360V), kushanda zvakanaka kweiyo inverter ndiko kwakanyanya panguva ino. Saka zvinokurudzirwa kuverenga nhamba ye solar modules zvinoenderana neakanakisa MPPT voltage:
N = Best MPPT VOC / VOC (-3°C) = 756V/49.7V=15.21
Single crystal panel Yakanakisa MPPT VOC =Yakanakisa MPPT voltage x 1.2=630×1.2=756V
Polycrystal panel Yakanakisa MPPT VOC =Yakanakisa MPPT voltage x 1.2=630×1.3=819V
Saka kuRenac three phase inverter R3-5K-DT anokurudzirwa ekuisa solar panels ari gumi nematanhatu mamodule, uye anongoda kubatana tambo imwe 16x330W=5280W.
4. Mhedziso
Inverter yekupinda No ye solar panels zvinoenderana nesero tembiricha uye tembiricha coefficient. Kuita kwakanyanya kunobva pane yakanakisa MPPT voltage yeiyo inverter.