(PDF) Effect of non-uniform illumination on performance of ...
The non-uniform solar illumination will weaken the capability of the TE generator and the maximum output power decrease by 1.4% among the range of non-uniformity studied in this paper.
Preston N. 1997. Analytical Pavement SHRP-A-357 National ...
have investigated the effect of non-uniform incident light on electrical performance (Franklin and Conventry 2003) but few have studied the thermal impact of the problem. The experimental study by Conventry et al. (2002) showed that a silicon solar cell under non-uniform incident illumination has less open-circuit voltage and efficiency
(PDF) The combined effect of non-uniform illumination and ...
As a consequence the effects of non-uniform illumination are not severe especially with regard to Vo¢ and they are noticeable only at high irradiances; this is why some investigators have found it to be very small .In contrast theoretical evaluations of the effect  have been carried out by computer-aided numerical analysis which obscures the influence of the relevant physical parameters.The aim of this work is to demonstrate the influence of non-uniform illumination on ...
The effects of non-uniform illumination on the performance of ...
The effects of non-uniform illumination on the performance of series connected photovoltaic arrays Jason Shelton
The combined effect of non-uniform illumination and series ...
The internal flow of current will produce a voltage drop across the series resistance of the cell which can significantly affect the open-circuit voltage. The effects of non-uniform illumination on the performance of solar cells have been discussed by several researchers [1 - 6].
The Effect of Non-Uniform Illumination on the Performance of ...
The analysis reveals that the effect of non-uniform illumination is equivalent to that of temperature raise at some degree centigrade to 10°C. However solar cells in low-concentrated PV systems always work at 30 – 40°C higher than the standard test conditions (STC).
Combined effect of non-uniform illumination and surface ...
(1989). Combined effect of non-uniform illumination and surface resistance on the performance of a solar cell. International Journal of Electronics: Vol. 66 No. 5 pp. 755-774.
Effect of non-uniform illumination on performance of solar ...
The non-uniform solar illumination will weaken the capability of the TE generator and the maximum output power decrease by 1.4% among the range of non-uniformity studied in this paper. Reducing the number of the thermoelectric legs for non-uniform solar illumination can greatly increase the performance of the thermoelectric generator.
Effect of non-uniform illumination and temperature ...
This review will help researchers to learn the effect of the non-uniformity on the illumination and the temperature and common improvement method which will benefit CPV design and optimization. Concentrated photovoltaic (CPV) technology as a typical PV application is becoming popular due to its advantages of high conversion efficiency and low cost etc.
The effect of non-uniform irradiation on PV cell performance ...
The effect of non-uniform irradiation on PV cell performance in a lens-walled CPC The incoming light is refracted by the front surface of the lens and then reflected by its coated back surface. Due to this featuring structure it makes a larger actual half acceptance angle max ac than its nominal half acceptance angle max.
Effects of Nonuniform Incident Illumination on the Thermal ...
This nonuniformity has two main effects on the solar cell: (i) electrical impacts such as high ohmic drops and the flow of an internal current and (ii) thermal impacts such as increased temperatures in some regions of the cell that cause hot spots and drastically reduce the overall efficiency and power output.
"The effects of non-uniform illumination on the performance ...
Fiber optic illumination is non-uniform and the current generated by an SCPA is limited by the photocell with the least amount of illumination. This thesis addresses the effects of Gaussian and step-index multi-mode optical fiber illumination on the performance of SCPAs.
The Effects of Nonuniform Illumination on the Electrical ...
The study showed that non-uniform illumination of the solar cells brings down the electrical efficiency and fill factor significantly which in turn increases the cost of the system.
CiteSeerX — Effects of Highly Non-uniform Illumination ...
CiteSeerX - Document Details (Isaac Councill Lee Giles Pradeep Teregowda): Conventional thinking for cells under concentrated sunlight would suggest that short circuit current and hence also open circuit voltage can be determined exactly by the total illumination falling onto the cell.
Computer analysis of resistance and non-uniform illumination ...
It is shown that introduction of lower top layer resistance (approximately 5 ohms/square) reduces the sensitivity of cell performance to illumination uniformity which suggests important economic benefits for concentrator systems: reduced power loss (higher conversion efficiency) in solar cells at higher concentrations and relaxed tolerances on illumination uniformity (lower concentrator cost).
Effects of Highly Non-uniform Illumination Distribution on ...
As will be shown in this paper the non-uniform light distribution not only affects the fill-factor but also results in an open circuit voltage reduction. This effect has been previously observed through experiment by Cuevas et al. (1983) for the case of uniform illumination with partial cell shading.
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