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AtaMoS-TeC Project: The bifacial institute for desert PV
The Atacama DesertInternational Standard for PV technologies such as IEC and UL have not been developed for specific applications like extreme climates such as the Atacama Desert, which is well known forextremely high irradiation levels and specific solar spectrum (in particular in the UV-B range), large amount of sun hours per day, clear-sky conditions, low ambient temperature, corrosiveenvironment, partial high humidity (“camanchaca”) and a sticking fine dust (“chusca”). Therefore the PV system performance and longevity is strongly affected, and the Standards are onlypartly applicable to determine the module reliability and durability against climatic impacts. The high albedo of desert sand in combination with the high levels of solar irradiation, makesbifacial glass-glass modules a very promising option.
Work Packages
AcknowledgementThis work was supported by the Chilean Economic Development Agency, CORFO, with the contract no. 17PTECES-75830 under the framework of theproject AtaMoS TeC and by the Chilean Solar Energy Research Center (SERC Chile) under contract no. CONICYT/FONDAP15110019.
*Enrique Cabrera1,3, Jean Francois Lelievre2, Jorge Rabanal3, Pablo Ferrada3, Aitor Marzo3,Stephane Guillerez2, Francisco Araya3, Herve Colin2, Radovan Kopecek1, Andreas Halm1
Edward Fuentealba3, Delfina Muñoz2, Rodrigo Palma3
1International Solar Energy Research Center -ISC- Konstanz, Rudolf-Diesel-Str. 15, 78467 Konstanz, Germany2INES/CEA, Department of Solar Technologies, Université Grenoble Alpes, INES, F-73375 Le Bourget du Lac, France
3SERC Chile, Av Tupper 2007 piso 4, Santiago, Chile*Corresponding author: Phone: +49 7531 3618356 ; Email: [email protected]
WP0: Coordination
WP1: Module Development
WP2: Module Performance
Assessment and Labeling
WP3: Balance of System
Component Development
WP4: O & M Component
Development
WP5: Territorial Characterization
WP6: Demonstration of PV
Systems Under Desert Donditions
WP7: Optimization
and bankability
WP8: Exploration Models, Entrepreneurship and
Technology Transfer
WP9: Education, Training and Dissemination
Front Glass (mm)1.0 / 2.0 / 3.2ARC/ASC/ Holographic Technology
CellsBifacial cellsFull / Half / Shingle nPERT, HET, PERC+
Rear cover Glass: 1.0 / 2.0 / 3.2/Transparent Backsheet (TBS)ARC/ASC/ Holographic Technology
EncapsulantTPO/ Silicone / no encapsulant
EncapsulantTPO/ Silicone / no encapsulant
Tasks:WP1.1 BenchmarkingWP1.2 Interconnection studiesWP1.3 Glass and ARC & ASC optimizationWP1.4 Encapsulation tests and optimizationWP1.5 Frame impact and junction box designWP1.6 Future module conceptsWP1.7 Module Recycling ConceptsWP1.8 PV module virtual prototype
Roadmap
0
4
8
12
16
20
dis
trib
uti
on
of e
ner
gy H
[%]
irradiance, G [Wm-2]
Stuttgart El Gouna San Pedro
Peaks and valleys
of power are
latitude
dependents
Commonly Mounted
Monofacial Module
Verticallly Mounted
Bifacial Module
Tilted Mounted
Bifacial Module↑ ~23%
First bifacial desert PV institute for module and system development
J. Rabanal-Arabach et al., Minimization of Electrical Losses of PV Modules Located in Places with High Solar Irradiance. Energy Procedia 77, 402–406 (2015).
C. P. McKay, C. P. et al. Temperature and moisture conditions for life in the extreme arid region of the Atacama desert, Astrobiology 3, 393–406 (2003).
A. Marzo et al., Standard or local spectrum. Implications for solar technologies studies, Renewable Energy 127, 871–882 (2018)
1) Offices
~ 20 scientists
4) Outdoor test site
2) Module Development
Lab
3) Indoor Testing
Lab
Evaluation of 3 different bifacial technologies (nPERT, HET, PERC+) installed in 3types of different structures: vertical, tilted and one-axis tracker
90 modules of 72 cells based on nPERT, HET, PERC+ and PERC mono (asreference) technologies installed in the PSDA before December 2018
40 modules of 4 cells based on nPERT and HET technologies with different typesof configurations: Soldering vs gluing, Half vs Full cell design, different encapsulantsand glasses, with and without ARC / ASC installed in the PSDA before December2018.
Other 40 Modules manufactured for ultra accelerated indoor tests to simulate theclimatic conditions of the Atacama desert
Requirements for thePV module
Front and back covers
High UV stability
High transmittance
Resistant to abrasion and
corrosion
Enduring ARC
Extremely low or null
MVTR
EncapsulantHigh UV stability
Low light absorption
No formation of acid
Frame and j-box
Resistant to abrasion and
corrosion
No additional optical losses
Proper heatmanagement
(j-box)
Hour of Day, 1 Jan 1996
Win
d (
m s
-1)
Lig
ht
(W m
-2)
T (°C
)R
H (
%)
VMBM TMBM HSAT-B
corrosive environment
dust deposition
AtaMo
R&D Centre
Chile
(ISC-INES-
FhG/SERC)
•UV active cell
• long lasting module
• local content
•cleaning methods
AtaMo 2
330 Wp
440 Wpe•UV sensitive cell
•half cells
•silicone or no encapsulant
•…
AtaMo+
360 Wp
490 Wpe•UV sensitive cell
•Cu metallization?
•half cells
•silicone or no encapsulant
•down conversion?
•self cleaning glass
•smart inverters
•…
Study for
CORFO (ISC)
Installation of 2.5
MW bifacial fixed
tilt PV-system in
San Felipe
(MegaCell)
Installation of 1.24
MW bifacial
tracked PV-system
in La Silla
(MegaCell)LC
OE
(c
US
D/ kW
h)
Planning of
R&D centre
(ISC-INES-
FhG/SERC)
Tests at PSDA
(ISC)
2020 2025201820162015
1
2
3
4
5
South
Germany
8 - 10
6 - 8
Atacama
(calama)
6 - 8
4 - 6
Atacama
(calama)
2 - 4
1 - 2
Standard
Bifacial
Global Tilted Comparison
Cross-section of the desert representing different types of climate
Bifaciality gain
Distribution of available solar energy in module plane
Climatic conditions of four years of observations
Yungay Pilot Center (PSDA)Lalcktur Industrial Pilot Plant 1 MW
