The Experts below are selected from a list of 8889 Experts worldwide ranked by ideXlab platform
Qinglong Meng - One of the best experts on this subject based on the ideXlab platform.
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Testing and design of a low-cost large scale Solar Simulator
Proceedings of SPIE, 2011Co-Authors: Qinglong Meng, Yuan WangAbstract:To simulate Solar radiation at the earth's surface, a new economical multiple-lamp Solar Simulator was designed. The Solar Simulator is comprised of 188 reflector sunlight dysprosium lamps whose light spectrum is very similar to air mass 1.5 (AM1.5) Solar spectrum terrestrial standards. Lamps are configured in a hexagonal pattern with 15 columns of 12 or 13 lamps at a lamp-to-lamp spacing and column-to-column spacing of 295mm. Without altering the radiation spectral distribution, the average irradiance on target irradiated area can be adjusted over a wide range between 150 and 1100W/m2 by means of the variation of lamps number or/and lamp-to-irradiated area distance. At the height of 2.0m the Solar Simulator provides 2m×1.5m irradiated area with over 1000 W/m2. Measurement of irradiance indicates that the multiple-lamp Simulator conforms to Class B of ASTM (American Society for Testing and Materials) Standard (ASTM E927-2005) in regard to spectrum match, irradiance uniformity and stability. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%.
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irradiance characteristics and optimization design of a large scale Solar Simulator
Solar Energy, 2011Co-Authors: Yuan Wang, Qinglong Meng, Linhua ZhangAbstract:Abstract A new economical large-scale multiple-lamp Solar Simulator was designed and constructed to provide a test platform for the simulation of Solar radiation at the earth’s surface. The light source and fabrication of the Simulator is described. Measurement of the irradiance indicates that the multiple-lamp Simulator conforms to Class B of the ASTM (American Society for Testing and Materials) and IEC (International Electrotechnical Commission) standard in regard to spectrum match, irradiance uniformity and stability. Without altering the spectral distribution, the average irradiance on the target area can be adjusted between 150 and 1100 W/m2 by varying the number of lamps and/or the lamp-to-area distance. Diurnal irradiance variation trends could also be simulated through suitable control. The irradiation characteristics of the Solar Simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The optimal reflection angle was determined by means of optical simulation. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%.
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Irradiance characteristics and optimization design of a large-scale Solar Simulator
Solar Energy, 2011Co-Authors: Qinglong Meng, Yuan Wang, Linhua ZhangAbstract:A new economical large-scale multiple-lamp Solar Simulator was designed and constructed to provide a test platform for the simulation of Solar radiation at the earth's surface. The light source and fabrication of the Simulator is described. Measurement of the irradiance indicates that the multiple-lamp Simulator conforms to Class B of the ASTM (American Society for Testing and Materials) and IEC (International Electrotechnical Commission) standard in regard to spectrum match, irradiance uniformity and stability. Without altering the spectral distribution, the average irradiance on the target area can be adjusted between 150 and 1100W/m2by varying the number of lamps and/or the lamp-to-area distance. Diurnal irradiance variation trends could also be simulated through suitable control. The irradiation characteristics of the Solar Simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The optimal reflection angle was determined by means of optical simulation. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%. © 2011 Elsevier Ltd.
Linhua Zhang - One of the best experts on this subject based on the ideXlab platform.
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irradiance characteristics and optimization design of a large scale Solar Simulator
Solar Energy, 2011Co-Authors: Yuan Wang, Qinglong Meng, Linhua ZhangAbstract:Abstract A new economical large-scale multiple-lamp Solar Simulator was designed and constructed to provide a test platform for the simulation of Solar radiation at the earth’s surface. The light source and fabrication of the Simulator is described. Measurement of the irradiance indicates that the multiple-lamp Simulator conforms to Class B of the ASTM (American Society for Testing and Materials) and IEC (International Electrotechnical Commission) standard in regard to spectrum match, irradiance uniformity and stability. Without altering the spectral distribution, the average irradiance on the target area can be adjusted between 150 and 1100 W/m2 by varying the number of lamps and/or the lamp-to-area distance. Diurnal irradiance variation trends could also be simulated through suitable control. The irradiation characteristics of the Solar Simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The optimal reflection angle was determined by means of optical simulation. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%.
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Irradiance characteristics and optimization design of a large-scale Solar Simulator
Solar Energy, 2011Co-Authors: Qinglong Meng, Yuan Wang, Linhua ZhangAbstract:A new economical large-scale multiple-lamp Solar Simulator was designed and constructed to provide a test platform for the simulation of Solar radiation at the earth's surface. The light source and fabrication of the Simulator is described. Measurement of the irradiance indicates that the multiple-lamp Simulator conforms to Class B of the ASTM (American Society for Testing and Materials) and IEC (International Electrotechnical Commission) standard in regard to spectrum match, irradiance uniformity and stability. Without altering the spectral distribution, the average irradiance on the target area can be adjusted between 150 and 1100W/m2by varying the number of lamps and/or the lamp-to-area distance. Diurnal irradiance variation trends could also be simulated through suitable control. The irradiation characteristics of the Solar Simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The optimal reflection angle was determined by means of optical simulation. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%. © 2011 Elsevier Ltd.
Gabriel Sala - One of the best experts on this subject based on the ideXlab platform.
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Concentrator Photovoltaics Solar Simulator
Frontiers in Optics, 2008Co-Authors: César Domínguez, Ignacio Antón, Gabriel SalaAbstract:This paper presents the description and characterization of a Solar Simulator able to measure indoors the performance of concentrator photovoltaic (CPV) systems. Optical fundamentals of the solution proposed for the Simulator are explained.
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Solar Simulator for concentrator photovoltaic systems
Optics Express, 2008Co-Authors: César Domínguez, Ignacio Antón, Gabriel SalaAbstract:A Solar Simulator for measuring performance of large area concentrator photovoltaic (CPV) modules is presented. Its illumination system is based on a Xenon flash light and a large area collimator mirror, which simulates natural sun light. Quality requirements imposed by the CPV systems have been characterized: irradiance level and uniformity at the receiver, light collimation and spectral distribution. The Simulator allows indoor fast and cost-effective performance characterization and classification of CPV systems at the production line as well as module rating carried out by laboratories.
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Solar Simulator for indoor characterization of large area high-concentration PV modules
2008 33rd IEEE Photovoltaic Specialists Conference, 2008Co-Authors: César Domínguez, Ignacio Antón, Gabriel SalaAbstract:This paper presents a complete description of a novel Solar Simulator for large area concentrator photovoltaic (CPV) modules, which has been designed and manufactured at Instituto de Energía Solar of Universidad Politécnica de Madrid (IES-UPM). The main problem overcome in developing such a Solar Simulator is explained, and a whole description of the system elements is given. In addition, it is presented a characterization of the latest improvements of the Simulator, focusing specially in the spectral requirements. The paper also reviews the development history of the Simulator until its current commercialization as a tool for the CPV industry.
Philip T. Krein - One of the best experts on this subject based on the ideXlab platform.
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Low-cost Solar Simulator design for multi-junction Solar cells in space applications
2014 Power and Energy Conference at Illinois (PECI), 2014Co-Authors: Nathan Dostart, Julia Huynh, Philip T. KreinAbstract:Multi-junction Solar cells are commonly used in space applications where they are exposed to the air mass 0 (AM0) spectrum. Solar Simulators are used to emulate the AM0 spectrum for ground testing of the Solar cells before the space application is launched. A low-cost Solar Simulator was designed using LEDs for the visible spectrum and halogen lamps for the infrared spectrum. A design procedure is provided to determine the intensity and geometry of the lights needed to meet spectral match and spatial uniformity requirements. The presented Solar Simulator design is adequate for testing GaInP2/GaAs/Ge triple-junction Solar cells intended for use in a cube satellite application and has a significantly lower cost than commercially-available Solar Simulators.
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Solid-state Solar Simulator
IEEE Transactions on Industry Applications, 2012Co-Authors: Ali M. Bazzi, Zach Klein, Kevin P. Kroeger, Pradeep S. Shenoy, Micah Sweeney, Philip T. KreinAbstract:This paper presents an efficient, low-cost, and versatile LED-based Solar Simulator intended to produce a well- characterized spectrum for tests of Solar cells and other photo- sensitive devices. Three major design aspects are addressed: LED spectra, power converters for LED drive, and control. The visible light of a standard Solar spectrum is simulated using six LED colors. The number of LEDs and their placement for uniformity are addressed. Boost converters under current-mode control are used to achieve reproducible LED brightness through adjustable currents, or equivalent radiant-flux commands. The independent control of the six colors can simulate a range of different light sources and Solar spectra. Uniformity tests verify that the system achieves standard spectral uniformity requirements over an area of 100 mm × 100 mm in simulations and 100 mm × 50 mm in experiments. LEDs in the proposed Simulator consume less power and reduce the Simulator size compared to the available state of the art. The user-friendly interface also allows active control of the simulated spectrum.
Yuan Wang - One of the best experts on this subject based on the ideXlab platform.
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Testing and design of a low-cost large scale Solar Simulator
Proceedings of SPIE, 2011Co-Authors: Qinglong Meng, Yuan WangAbstract:To simulate Solar radiation at the earth's surface, a new economical multiple-lamp Solar Simulator was designed. The Solar Simulator is comprised of 188 reflector sunlight dysprosium lamps whose light spectrum is very similar to air mass 1.5 (AM1.5) Solar spectrum terrestrial standards. Lamps are configured in a hexagonal pattern with 15 columns of 12 or 13 lamps at a lamp-to-lamp spacing and column-to-column spacing of 295mm. Without altering the radiation spectral distribution, the average irradiance on target irradiated area can be adjusted over a wide range between 150 and 1100W/m2 by means of the variation of lamps number or/and lamp-to-irradiated area distance. At the height of 2.0m the Solar Simulator provides 2m×1.5m irradiated area with over 1000 W/m2. Measurement of irradiance indicates that the multiple-lamp Simulator conforms to Class B of ASTM (American Society for Testing and Materials) Standard (ASTM E927-2005) in regard to spectrum match, irradiance uniformity and stability. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%.
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irradiance characteristics and optimization design of a large scale Solar Simulator
Solar Energy, 2011Co-Authors: Yuan Wang, Qinglong Meng, Linhua ZhangAbstract:Abstract A new economical large-scale multiple-lamp Solar Simulator was designed and constructed to provide a test platform for the simulation of Solar radiation at the earth’s surface. The light source and fabrication of the Simulator is described. Measurement of the irradiance indicates that the multiple-lamp Simulator conforms to Class B of the ASTM (American Society for Testing and Materials) and IEC (International Electrotechnical Commission) standard in regard to spectrum match, irradiance uniformity and stability. Without altering the spectral distribution, the average irradiance on the target area can be adjusted between 150 and 1100 W/m2 by varying the number of lamps and/or the lamp-to-area distance. Diurnal irradiance variation trends could also be simulated through suitable control. The irradiation characteristics of the Solar Simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The optimal reflection angle was determined by means of optical simulation. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%.
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Irradiance characteristics and optimization design of a large-scale Solar Simulator
Solar Energy, 2011Co-Authors: Qinglong Meng, Yuan Wang, Linhua ZhangAbstract:A new economical large-scale multiple-lamp Solar Simulator was designed and constructed to provide a test platform for the simulation of Solar radiation at the earth's surface. The light source and fabrication of the Simulator is described. Measurement of the irradiance indicates that the multiple-lamp Simulator conforms to Class B of the ASTM (American Society for Testing and Materials) and IEC (International Electrotechnical Commission) standard in regard to spectrum match, irradiance uniformity and stability. Without altering the spectral distribution, the average irradiance on the target area can be adjusted between 150 and 1100W/m2by varying the number of lamps and/or the lamp-to-area distance. Diurnal irradiance variation trends could also be simulated through suitable control. The irradiation characteristics of the Solar Simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost. To enlarge the effective irradiated area, two large mirror-like stainless steel plates was mounted on both of the long sides of the Solar Simulator. The optimal reflection angle was determined by means of optical simulation. The radiation characteristics of Simulator are improved and the optimized effectively irradiation surface is expanded up to 81.6%. © 2011 Elsevier Ltd.
