energy systems photovoltaic system
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Solar Electricity Conversion
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Photovoltaics (PV) - grid-tied and off grid
PV produces electricity
works anywhere
no tracking required
electrochemical storage possible
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PHOTOVOLTAICdirectly converts
sunlight intoelectricity
Solar cell
Solar cell Simple device which canproduce electricity when
exposed to sun
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Studies related to solar cells :
1. Increasing the efficiency
2. Decreasing the cost
3. Increasing the lifetime
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p - n junction
Metal - insulator -semiconductor
Structural electrical
field
Photovoltaic energy conversion process requires firstly, a material in which the absorption of light raises
an electron to a higher energy state, secondly, the movement of this higher energy electron
from the solar cell into an external circuit.
A variety of materials and processes can potentially satisfythe requirements but in practice nearly all photovoltaicenergy conversion uses semiconductor materials in the
form of ap-njunction.
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The basic steps in the operation of a solar cell are:
the generation of light-generated carriers;
the collection of the light-generated carries to generate acurrent;
the generation of a large voltage across the solar cell;
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Solar cell structure
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n type doping
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p type doping
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The basic steps in the operation of a solar cell are:
the generation of light-generated carriers;
For photovoltaic devices, reflection and transmission are
typically considered loss mechanisms as photons which arenot absorbed do not generate power. If the photon isabsorbed it has the possibility of exciting an electron fromthe valence band to the conduction band.
A key factor in determining if a photon is absorbed ortransmitted is the energy of the photon. Therefore, only if thephoton has enough energy will the electron be excited intothe conduction band from the valence band.
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The basic steps in the operation of a solar cell are:
the generation of light-generated carriers;Photons falling onto a semiconductor material can be dividedinto three groups based on their energy compared to that ofthe semiconductor band gap:
Eph < EG Photons with energy Eph less than the band gapenergy EG interact only weakly with the semiconductor,
passing through it as if it were transparent.
Eph= EGhave just enough energy to create an electron hole
pair and are efficiently absorbed.
Eph> EGPhotons with energy much greater than the band
gap are strongly absorbed. However, for photovoltaic
applications, the photon energy greater than the band gap is
wasted as electrons quickly thermalize back down to the
conduction band edges.
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I V KARAKTERST
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I-V KARAKTERST
I V KARAKTERST
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http://pveducation.org/pvcdrom
I-V KARAKTERST
I V KARAKTERST
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http://pveducation.org/pvcdrom
I-V KARAKTERST
I V KARAKTERST
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http://pveducation.org/pvcdrom
I-V KARAKTERST
I V Characteristics
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I-V Characteristics
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R serial
http://pveducation.org/pvcdrom
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R shunt
http://pveducation.org/pvcdrom
I V KARAKTERST
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http://pveducation.org/pvcdrom
I-V KARAKTERST
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Serial Connection
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Fotovoltaik Paneller
Bypass ve Blocking Diyotlar
http://pveducation.org/pvcdrom/modules/bypass-diodes
http://pvcdrom.pveducation.org/MODULE/Array.htm
http://pveducation.org/pvcdrom/modules/bypass-diodeshttp://pvcdrom.pveducation.org/MODULE/Array.htmhttp://pvcdrom.pveducation.org/MODULE/Array.htmhttp://pveducation.org/pvcdrom/modules/bypass-diodeshttp://pveducation.org/pvcdrom/modules/bypass-diodeshttp://pveducation.org/pvcdrom/modules/bypass-diodes -
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PVCDROM animasyon
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Vmpp range changeInverter selection
! ! ! ! !
Vmpp range change
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Vmpp range changeInverter selection
! ! ! ! !
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MISMATCH EFFECTS
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UYUMSUZLUK ETKLER
CATALOG READING
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Max. DC power (@ cos =1) 3820 W
Max. input voltage 500 V
MPP voltage range / rated input
voltage200 V400 V / 200 V
Min. input voltage / initial input
voltage200 V / 250 V
Max. input current 20 A
Max. input current per string 16 A
Number of independent MPP inputs
/ strings per MPP input1 / 3
EVRC SUNNY BOY 3300INPUT (DC)
CATALOG READING
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OUTPUT (AC)
Rated output power (@ 230 V, 50 Hz) 3300 W
Max. apparent AC power 3600 VA
Nominal AC voltage / range 220 V, 230 V, 240 V / 180 V 265 V
AC power frequency / range 50 Hz, 60 Hz / -4.5 Hz ... +4.5 Hz
Rated power frequency / rated power voltage 50 Hz / 230 V
Max. output current 18 A
Power factor at rated power 1
Adjustable displacement factor
Feed-in phases / connection phases 1 / 1
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Nominal Power12 (Pnom) 327 W Power Tolerance +5/3%
Avg. Panel Efficiency 20.4%
Rated Voltage (Vmpp) 54.7 V
Rated Current (Impp) 5.98 A Open-Circuit Voltage (Voc) 64.9 V
Short-Circuit Current (Isc) 6.46 A
Maximum System Voltage 1000 V UL & 1000 V IEC
Maximum Series Fuse 20 A
Power Temp Coef. (Pmpp) 0.38% / oC
Voltage Temp Coef. (Voc) 176.6 mV / oC
Current Temp Coef. (Isc) 3.5 mA / oC
ELECTRICAL DATA PV MODUL E20-327
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OPERATING CONDITION AND MECHANICAL DATA
Temperature 40F to +185F (40C to +85C)
Max load Wind: 50 psf, 2400 Pa, 245 kg/m front & back
Snow: 112 psf, 5400 Pa, 550kg/m front
Impact resistance 25 mm diameter hail at 23 m/sAppearance Class B
Solar Cells 96 Monocrystalline Maxeon Gen II Cells
Glass High Transmission Tempered Anti- Reflective
Junction Box IP-65 RatedConnectors MC4 Compatible
Frame Class 2 silver anodized
Weight 41 lbs (18.6 kg)
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Max. DC power (@ cos =1) 3820 W
Max. input voltage 500 V
MPP voltage range / rated input
voltage200 V400 V / 200 V
Min. input voltage / initial input
voltage200 V / 250 V
Max. input current 20 A
Max. input current per string 16 A
Number of independent MPP inputs
/ strings per MPP input1 / 3
INVERTER SUNNY BOY 3300
INPUT (DC)
MODULE AND INVERTER SELECTION
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MODULE AND INVERTER SELECTION
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MODULE AND INVERTER SELECTION
MODULE AND INVERTER SELECTION
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MODULE AND INVERTER SELECTION
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PVGIS
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PVGIS
PVGIS
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PVGIS
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PVGIS
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