06 soria ines
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Transcript of 06 soria ines
1 20/04/2012
Characterization of bifacial modules of
different architectures
Bruno Soria
Yannick Veschetti
Paul Lefillastre
Eric Gerritsen
Cell & Module Laboratory
French National Institute for Solar Energy
24th April 2012
2 24th April 2012 [email protected]
60’s 2008 FUTURE
- Context and aim of the study -
70’s
Aim of this study :
• Comparing different architectures
of bifacial modules.
• Studying the potential of a new
characterization setup on solar
simulator.
3 24th April 2012 [email protected]
1. Cell and module architecture
2. Standard indoor characterization
3. Bifacial indoor characterization
4. Outdoor tests and follow up
- Content -
4 24th April 2012 [email protected]
1. Cell and module architecture
2. Standard indoor characterization
3. Bifacial indoor characterization
4. Outdoor tests and follow up
- Content -
5 24th April 2012 [email protected]
- Cell and module architecture -
N-type PERT bifacial cells
Boron emitter
156PSQ Cz substrates
Efficiency of 92% FAR/FAV
Symetrical rear and front grid
Substrate features Measurement Jsc (mA/cm²) Voc (mV) FF (%) η (%)
Cz , 239.6 cm² FAV 38.8 627.4 77 18.7
FAR 35.3 624.5 78 17.2
Si(n) Phosphorus BSF
Boron Emitter
Thermal SiO2\ SiNx
Rear s.p. grid
Front s.p. grid
Thermal SiO2 \ SiNx ARC
Strongly influenced by chuck reflectivity and surface contacts
6 24th April 2012 [email protected]
- Cell and module architecture -
NICE technology :
Lower material and process cost
Recycling possibility
STANDARD technology (APOLLON SOLAR)
Architecture
Advantages
PIB rub
glass
PRESSED
EVA UV clear
LAMINATED
glass
EVA UV clear :
glass glass
Module NOT OPTIMISED :
No AR coating on glass
Depression inside
Black PIB rub
7 24th April 2012 [email protected]
- Cell and module architecture -
UP - UP UP – DOWN (patent Kopecek)
Interesting with NICE technology
(mechanical contact)
8 24th April 2012 [email protected]
- Cell and module architecture -
STANDARD technology
UP - UP UP - DOWN UP - UP UP - DOWN
FRONT
REAR
9 24th April 2012 [email protected]
1. Cell and module architecture
2. Standard indoor characterization
3. Bifacial indoor characterization
4. Outdoor tests and follow up
- Content -
10 24th April 2012 [email protected]
- Standard indoor characterization -
• Module : front & rear independently
with black mask around cells
and black mask on backside
• Set up : PASAN Class IIIb solar simulator
11 24th April 2012 [email protected]
- Standard indoor characterization -
STANDARD technology
UP - UP UP - DOWN UP - UP UP - DOWN
12 24th April 2012 [email protected]
Standard – UP UP
Standard – UP DOWN
• UP DOWN -> flat
- Standard indoor characterization -
• UP UP -> not flat
Repartition of ratio :
From front anf rear spectral responses :
[similar shapes for NICE]
13 24th April 2012 [email protected]
1. Cell and module architecture
2. Standard indoor characterization
3. Bifacial indoor characterization
4. Outdoor tests and follow up
- Content -
14 24th April 2012 [email protected]
- Bifacial indoor characterization -
Set up : PASAN Class IIIb + MOUNTING => creating a standard optical environment
15 24th April 2012 [email protected]
- Bifacial indoor characterization -
Ibifacial = Ifront + Irear
Vbifacial = av (Vfront, Vrear)
STANDARD technology
UP - UP UP - DOWN UP - UP UP - DOWN
16 24th April 2012 [email protected]
UP DOWN architecture
UP UP architecture
Front illumination Back illumination Bifacial illumination
Front illumination Back illumination Bifacial illumination
- Bifacial indoor characterization -
- Bifacial indoor characterization -
Black White Alu
diffuse
Alu
specular
[similar for NICE]
24th April 2012
18 24th April 2012 [email protected]
Set up limitations :
- Irradiation correction : 2 monitor cells in the
module plane
- Uniformity of irradiance ? To be measured soon
- Spectral mismatch due to mirror
- Size of set up for real size modules
- Bifacial indoor characterization -
Further studies :
Influence of the ANGLE
19 24th April 2012 [email protected]
1. Cell and module architecture
2. Standard indoor characterization
3. Bifacial indoor characterization
4. Outdoor tests and follow up
- Content -
20 24th April 2012 [email protected]
- Outdoor tests -
Coming soon, case study :
BIFACIAL vertically installed EAST – WEST
Advantages :
• no snow, no dust,…
• better match with electrical consumption
Aim :
LINKED
WITH ?
Possible to avoid long term outdoor test to measure potential of bifacial modules ?
21 24th April 2012 [email protected]
Importance of ambient diffuse light (white : +10%)
Outdoor tests on small bifacial modules so far :
- Outdoor tests -
22 24th April 2012 [email protected]
REFERENCE
First results :
• White : +10% than REF
• Black : -10% than REF
Module bifacial
Bureaux
Module bifacial
Bureaux
Ongoing test : BIFACIAL BIPV
- Outdoor tests -
Case study
23 24th April 2012 [email protected]
Comparison of modules :
Proof of concept : NICE bifacial UP DOWN => can be improved !
Performance on bifacial illumination : UP DOWN ~ UP UP
Gain bifacial / monofacial : UP DOWN > UP UP
New characterization setup :
Bifacial illumination (2 mirrors) => no Jsc limitation => no FF increase
Several possible configurations : surfaces, angles,…
up to 40% gain due to white surface on back side
Outdoor tests : possible to predict outdoor gain with indoor setup ?
- Conclusion and perspectives -
Merci de votre attention
24 20/04/2012
Many thanks for your attention !
Acknowledgements :
Guillaume RAZONGLES, Yves DELESSE (Solar System Lab - INES)
Brigitte ASSOA, Florian SAINT-PIERRE (Energy Building Lab - INES)
Armand BETTINELLI (PV Cell Lab – INES)
Jean-Emmanuel BROQUIN (Minatec – Grenoble INP)
Oleksiy NICHIPORUK ([email protected]), Julien DUPUIS ([email protected])
CONTACT : [email protected]