Sunday, February 27, 2011
Analysis: Lower wind and solar prices to usher speedier adoption | Reuters
Analysis: Lower wind and solar prices to usher speedier adoption | Reuters
The price of solar panels, or modules, is expected to fall another 10-25 percent in 2011.
Modules prices would halve again in the next two to three years, predicted Madlani. But other analysts said that the longer outlook is clouded by conflicting pressures.
.:. Hyper Solar .:.
.:. Hyper Solar .:.
HyperSolar Announces Initial Breakthrough Design to Dramatically Increase the Power Output of Solar Cell
Friday, February 25, 2011
Solar Panel Film Increases Efficiency 300%, Cuts Costs in Half – CleanTechnica: Cleantech innovation news and views
Solar Panel Film Increases Efficiency 300%, Cuts Costs in Half – CleanTechnica: Cleantech innovation news and views
http://c1.cleantechnica.com/files/2011/02/hypersolar-solar-panels.jpg
http://c1.cleantechnica.com/files/2011/02/hypersolar-solar-panels.jpg
Thursday, February 17, 2011
German solar panel giant to enter UK market | Online News | Building
German solar panel giant to enter UK market | Online News | Building
http://www.constructionenquirer.com/2011/02/17/german-solar-giant-signs-installation-deal-with-enexos/
http://www.constructionenquirer.com/2011/02/17/german-solar-giant-signs-installation-deal-with-enexos/
MAXIMUM POWER POINT TRACKING FOR PHOTOVOLTAIC OPTIMIZATION USING EXTREMUM SEEKING
MAXIMUM POWER POINT TRACKING FOR PHOTOVOLTAIC OPTIMIZATION
USING EXTREMUM SEEKING Brunton-PVSC09.pdf (application/pdf Object)
A novel extremum seeking algorithm that utilizes the inverter
ripple was tested on a simulated array-inverter system using
MATLAB R
/Simulink. This method was benchmarked against
the popular perturb and observe method using 25 minutes
of rapidly varying irradiance data taken in June, 2007 on the
Princeton University solar deck. The irradiance data chosen
represents a worst-case scenario for maximum power point
tracking due to the presence of fast moving, scattered cloud
cover. It was shown that extremum seeking slightly outperforms
perturb and observe in total power efficiency, and drastically
outperforms in transient rise-time to the maximum power point,
with two orders of magnitude speed-up. Additionally, extremum
seeking has guaranteed convergence and stability properties
which are ideal for variable weather conditions and unmodeled
dynamics.
It remains to test the algorithms on the actual solar array
at Princeton University. Additionally, it would be interesting
to compare the algorithms on competing photovoltaic technologies,
namely GE poly-crystalline silicon panels and EPV’s
amorphous silicon thin films, to see how the shape of the panel
IV curve affects tracking performance. Here, only irradiance
variations were considered, although temperature and partial
shading experiments would also be interesting. Finally, a next
step is to extend the extremum seeking algorithm to have a
variable gain and compare with a modified perturb and observe
algorithm with variable increment.
USING EXTREMUM SEEKING Brunton-PVSC09.pdf (application/pdf Object)
A novel extremum seeking algorithm that utilizes the inverter
ripple was tested on a simulated array-inverter system using
MATLAB R
/Simulink. This method was benchmarked against
the popular perturb and observe method using 25 minutes
of rapidly varying irradiance data taken in June, 2007 on the
Princeton University solar deck. The irradiance data chosen
represents a worst-case scenario for maximum power point
tracking due to the presence of fast moving, scattered cloud
cover. It was shown that extremum seeking slightly outperforms
perturb and observe in total power efficiency, and drastically
outperforms in transient rise-time to the maximum power point,
with two orders of magnitude speed-up. Additionally, extremum
seeking has guaranteed convergence and stability properties
which are ideal for variable weather conditions and unmodeled
dynamics.
It remains to test the algorithms on the actual solar array
at Princeton University. Additionally, it would be interesting
to compare the algorithms on competing photovoltaic technologies,
namely GE poly-crystalline silicon panels and EPV’s
amorphous silicon thin films, to see how the shape of the panel
IV curve affects tracking performance. Here, only irradiance
variations were considered, although temperature and partial
shading experiments would also be interesting. Finally, a next
step is to extend the extremum seeking algorithm to have a
variable gain and compare with a modified perturb and observe
algorithm with variable increment.
Wednesday, February 16, 2011
Sunday, February 13, 2011
Service | PVX spot market price index solar PV modules - SolarServer
Service | PVX spot market price index solar PV modules - SolarServer
Price trends January 2011
Module type, origin | € / Wp | Trend since 2010-12 | Trend since 2011-01 | ||
|---|---|---|---|---|---|
Crystalline Germany | 1.71 |
| - 2.3 % |
| - |
Crystalline China | 1.47 |
| - 5.2 % |
| - |
Crystalline Japan | 1.63 |
| - 4.7 % |
| - |
Thin film CdS/CdTe | 1.25 |
| - 9.4 % |
| - |
Thin film a-Si | 1.08 |
| 0.7 % |
| - |
Thin film a-Si/ยต-Si | 1,26 |
| - 8.0 % |
| - |
Monday, February 7, 2011
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