An LED-based photovoltaic measurement system with variable spectrum and flash speed

Bliss, Martin; Betts, Thomas R.; Gottschalg, Ralph

doi:10.1016/j.solmat.2008.09.056

Cited by 59 publications

(45 citation statements)

References 3 publications

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“…The temporal stability (stationary) of the illumination is instead linked to the absence of fluctuations in the voltage of the supply source; a good feeding system ensures a negligible degree of instability. The main disadvantage of the use of a stationary system is the heating of the sample under the light during the test; this changes the environmental conditions (mainly temperature) of measurements [12].…”

Section: Sun Simulatorsmentioning

confidence: 99%

Sun Simulators: Development of an Innovative Low Cost Film Filter

et al. 2014

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Sun simulators are employed to test the performance of photovoltaic (PV) devices, according to the standard International Electrotechnical Commission (IEC) 61215. Economical and technical analysis show that PV manufacturers need to integrate Sun simulators in the production process and, in particular, at the end of the production chain in order to measure the I-V curve and to evaluate the peak power of PV devices. Sun simulators need specific lamps to simulate the solar spectrum and a specific filter to simulate atmosphere absorbance. Such a filter can cost over €6 per square centimeter. The aim of this work is to develop an alternative filter. In particular, both chemical analysis and spectrophotometric measurements are carried out to evaluate if the Air Mass (AM) 1.5 G filter can be replaced by a cheaper material. Preliminary simulations show how specific compounds coated on a glass surface can absorb the Sun spectrum, such as the AM 1.5 filter, but with lower costs.

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Section: Sun Simulatorsmentioning

confidence: 99%

Sun Simulators: Development of an Innovative Low Cost Film Filter

et al. 2014

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“…[4]- [6] IEC 60904-9 is the most popular standard which was applied to define the performance of the solar simulator. The standard listed three categories which are spectral match, non -uniformity of irradiance on the test area, and temporal instability of irradiance for I-V measurements.…”

Section: Introductionmentioning

confidence: 99%

Design Construct and Evaluation of Six- Spectral LEDs-Based Solar Simulator Based on IEC 60904-9

Watjanatepin¹

2017

IJET

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Abstract-This article presents the optical design of a six-spectral LED-based solar simulator. The study focuses on the measurement methods of spectral match, the non-uniformity and the temporal instability on the test plane. The proposed six-spectral LED solar simulator has an illuminated area of 900 cm 2 and can characterize medium size photovoltaic devices under variable irradiance. The spectral range covered is between 400 nm and 1100 nm which offer the capability of characterizing silicon PV technologies. The evaluation method is in accordance with IEC 60904-9. The Solar Power meter was used to measure the irradiance and a Compact Array Spectrometer and Fiber optic spectrometer were applied for the spectral match test. The irradiance is controlled via LabVIEW which can adjust the power to drive all LEDs in the constant current mode. The irradiance of 1000 W/m 2 was applied during testing. The results found that the spectral match classification is of class B. The non-uniformity of irradiance is of A-class across the illuminated area. The temporal instability of irradiance is capable of reaching class A. This idea is perfectly appropriate for the application of the testing of I-V characteristic of the silicon solar cell. For future work, the author has to improve the spectral match to reach an A Class.

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“…A detailed description of the solar simulator with a classification analysis can be found in [5] and [6]. In summary, the system uses 8 different LED colors and halogen light sources, all separately controllable, thus delivering a very flexible spectral output and light intensity.…”

Section: Measurement System and Configurationmentioning

confidence: 99%

Performance measurements at varying irradiance spectrum, intensity and module temperature of amorphous silicon solar cells

Bliss

Betts

Gottschalg

2010

2010 35th IEEE Photovoltaic Specialists Conference

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This paper demonstrates photovoltaic (PV) device performance measurements for energy rating and energy yield calculation derived indoors with an LED-based solar simulator prototype under varying irradiance (G), temperature (T) and spectrum (E), opening the possibility for much faster and more accurate energy yield prediction than previously possible from measurements acquired either indoors or outdoors, with the additional inclusion of spectral influences.The main aspects of the LED-based solar simulator used are described briefly and the measurement method with its requirements is explained in detail. Also presented are the first performance measurements made with an amorphous silicon solar cell; measuring the spectral effects reported in outdoor measurements for the first time in the laboratory.Results show a good agreement with previously reported spectral effects from outdoor measurements and underline the importance to consider all three environmental vectors (irradiance, spectrum and device temperature) for energy yield focused measurements.

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An LED-based photovoltaic measurement system with variable spectrum and flash speed

Cited by 59 publications

References 3 publications

Sun Simulators: Development of an Innovative Low Cost Film Filter

Sun Simulators: Development of an Innovative Low Cost Film Filter

Design Construct and Evaluation of Six- Spectral LEDs-Based Solar Simulator Based on IEC 60904-9

Performance measurements at varying irradiance spectrum, intensity and module temperature of amorphous silicon solar cells

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