Sunday, February 27, 2011

Renewable Energy - Intro ppt

Renewable Energy - Intro ppt

Solar Resource Assessment Methodology for Northwest Indiaindia_solar_methods_final.pdf (application/pdf Object)

Solar Resource Assessment Methodology for Northwest India india_solar_methods_final.pdf

Solar ‘Energy Telescope’ Focuses on More Output, Less Cost – CleanTechnica: Cleantech innovation news and views

Solar ‘Energy Telescope’ Focuses on More Output, Less Cost – CleanTechnica: Cleantech innovation news and views

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.

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

.:. Hyper Solar .:.

.:. Hyper Solar .:.

HyperSolar Announces Initial Breakthrough Design to Dramatically Increase the Power Output of Solar Cell

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/

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.

Abu Dhabi: The New Prince of Solar Technology? | Renewable Energy News Article

Abu Dhabi: The New Prince of Solar Technology? | Renewable Energy News Article

CSP Parabolic Trough Report: Costs and Performance6PgBrochure.

CSP Parabolic Trough Report: Costs and Performance 6PgBrochure.pdf

Sunday, February 13, 2011

Newsletter | PV-Tech International

Newsletter | PV-Tech International

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 %

-