PV Modules: Bifacial technology
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Bifacial PV production
Simulation tools - View Factor
View factor-Already implemented in commercial software
PVSyst
PVSYST
SAM 2018813
File Add untitled
Photovoltaic Residential
LC
SAM - NREL
in
System Design
SunPower SPR-X20-445-COM
Shading and Layout
Losses
SunPower SPR-X21-255
SunPower SPR-X21-335
SunPower SPR-X21-335-BLK
Lifetime
Modide Characteristics at Reference Conditions
Battery Storage
System Costs
Financial Parameters
Incentives
Electricity Rates
Electric Load
Vmp rel
Ac
Na
Lxcre
V_c_ref
ecifications
573
1.631
96
6.09
57.6
-0.3
dule Database
573
1.631
9
6.09
675
-03
573
1.651
46
6.09
576
-403
573
1.631
96
6.09
676
-0.3
58
767
2.162
128
6.21
905
-03
5.95
428
1,182
72
6.3
51
43
573
1.631
16
57.9
-43
5.95
573
1.671
96
679
-0.3
Refence conditione Total imadiance-1000 W/ml, Cell temp-25C
SunPower SPR-X21-335-BLK
60
Module Voltage (Volts)
Nominal efficiency
20.5321 %
Temperature coefficients
Maximum power (Prop)
335.205 W
-0.310°C
-1035 wes
Max power voltage (Vimp)
57. Vdc
Max power current (Imp)
58 Adc
Open circuit voltage (Vac)
67.9 Vdo
0250%C
Ade
-0.1.70 V/°C
AUT
Short circat curent (he
Bifacial Specifications
Muskules are bilacial
Transmission Fraction
Ground clearance height
Bifaciality
am 1
•
Examples of software using view factor: PVSysts, SAM, bifacialvf,
MOBIDIG, pvfactors, ...
.
Commercial software with an easy interface
tecnalia
Inspiring
Business
•
.
•
•
There might be doubts regarding the value of some inputs like
shading loss factor or backside mismatch loss factor.
This input values are being studied with ray-tracing tools.
According to recent studies, current VF software (SAM, PVSyst)
appears to be conservative relative to measured rear irradiance¹.
However, other studies shows that 2D VF models are enough
accurate 2,3
Probably they are the mostly used due to its "historical reliability"
and because they are widely used and known in the sector.
[1] Ultimate Bifacial Showdown: 75kW Field Results. Silvana Ayala Peláez, NREL. BiFi July 2020.
[2] Field Testing Meets Modeling: Validated Data on Bifacial Solar Performance. Kyumin Lee, Array Technologies. BiFi July 2020.
[3] Amir Asgharzadeh et al. A Benchmark and Validation of Bifacial PV Irradiance Models.
GoPV Project | 1st TRAINING COURSES
TECHNICAL FOCUS ON FUTURE SOLAR PV SYSTEMS
October 26-29th 2020View entire presentation