Publications associées à Acceptance angle (solar concentrator)

Inverse Analysis of Radiative Flux Maps for the Characterization of High Flux Sources

Sophia Haussener, Clemens Gregor Suter, Gaël Jean Clément Levêque

The reconstruction of the angular and spatial intensity distribution from radiative flux maps measured in high flux solar simulators or optical concentrators is an ill-posed inverse problem requiring special solution strategies. We aimed at providing a sol ...

2019

High-flux optical systems for solar thermochemistry

Sophia Haussener, Gaël Jean Clément Levêque

High-flux optical systems (HFOSs) are optical concentrators used to increase the radiative flux of the natural terrestrial solar irradiation. High radiative flux concentration leads to high energy density in solar receivers which allow to obtain high tempe ...

2017

Demonstration of a 5x5 cm(2) self-tracking solar concentrator

Eric Tremblay, Volker Günter Zagolla

Solar concentration is using optics in order to minimize the amount of expensive photovoltaic cell material needed. For concentration factors higher than approximately 4, tracking the sun's position is needed to keep the focal spot on the solar cell. Based ...

Spie-Int Soc Optical Engineering2015

Self-tracking Solar Concentration

Volker Günter Zagolla

Solar concentration is intended to decrease the cost of expensive solar cell material by replacing the solar cell with a focusing optical system as the initial receiving aperture. This reduces the amount of solar cell material needed but adds the need of t ...

EPFL2015

Origin and nature of measurement bias in catadioptric parallel goniophotometers

Marilyne Andersen, Boris Clément Karamata

We briefly categorize and compare parallel goniophotometers, which are instruments capable of simultaneously measuring the far-field distribution of light scattered by a surface or emitted by a source over a large solid angle. Little is known about the acc ...

2014

Self-tracking phase change concentrator device demonstrator

Eric Tremblay, Volker Günter Zagolla

Concentration photovoltaic systems uses free-space optics to concentrate sunlight onto photovoltaic cells, using mechanical trackers to accurately track the sun's position and keep the focal spot on the PV cell. We recently proposed and demonstrated a proo ...

Spie-Int Soc Optical Engineering2014

Self-tracking solar concentrator with an acceptance angle of 32 degrees

Christophe Moser, Eric Tremblay, Volker Günter Zagolla

Solar concentration has the potential to decrease the cost associated with solar cells by replacing the receiving surface aperture with cheaper optics that concentrate light onto a smaller cell aperture. However a mechanical tracker has to be added to the ...

Optical Society of America2014

Demonstration and future potential of a self-tracking phase change actuator

Eric Tremblay, Volker Günter Zagolla

State-of-the-art concentrators use free-space optics to concentrate sunlight onto photovoltaic cells. To achieve high concentration factors it is necessary to track the sun's position. In current systems, mechanical actuators keep the focal spot in the sol ...

Spie-Int Soc Optical Engineering2014

Proof of principle demonstration of a self-tracking concentrator

Christophe Moser, Eric Tremblay, Volker Günter Zagolla

We present to the best of our knowledge the first successful demonstration of a planar, self-tracking solar concentrator system capable of a 2-dimensional angular acceptance of over 40 degrees. The light responsive mechanism allows for efficient waveguide ...

Optical Society of America2014

Class AAA LED-Based Solar Simulator for Steady-State Measurements and Light Soaking

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Michael Elias Stückelberger, Yannick Samuel Riesen, Maximilien Joseph Marie Bonnet-Eymard, Brice Perruche

Recent improvements in light-emitting diode (LED) technology has allowed for the use of LEDs for solar simulators with excellent characteristics. In this paper, we present a solar simulator prototype fully based on LEDs. Our prototype has been designed spe ...

Ieee-Inst Electrical Electronics Engineers Inc2014