Institute Sistemas Fotovoltaicos Of Concentracion Isfoc

Ciudad Real, Spain

Institute Sistemas Fotovoltaicos Of Concentracion Isfoc

Ciudad Real, Spain
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Sanchez D.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Mora J.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Calvo-Parra G.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Martinez M.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc
AIP Conference Proceedings | Year: 2015

One of the challenges during the characterization of CPV modules is to deal with the thermal behavior. During normal operation in the field the concentrator is connected to the inverter and a fraction of the energy coming from the sun is dissipated with the corresponding conversion into electricity. On the other hand, when making the characterization of CPV modules, they are usually kept in VOC between I-V sweeps, what means that none energy is converted into electricity resulting in a higher operation temperature. Current standards, like IEC-62108:2007 and IEC-62670-3 C01 draft, define that, during the outdoor characterization, the CPV module should be connected to an electrical load to maintain it near MPP between I-V sweeps, what simulates normal operating conditions. The easiest solution could be to use mini-inverters, but it is an expensive solution and not easily adaptable to the different technologies. ISFOC has designed and developed a low-cost MPPT equipment that can be easily implemented in an outdoor characterization laboratory. This equipment is compatible with most of the CPV technologies since it covers a wide range of voltage and current values (up to 150V and 10A) and it is able to distinguish between absolute and local MPP what permits working with modules in any phase of development or making shading effects measurements. Currently, the MPPT is implemented and in operation at ISFOC's outdoor laboratory to make the long term validation. But the results obtained up to now are very promising; the equipment is able to maintain the CPV module under test within a ±3% of the expected power in stable conditions and is able to keep tracking the MPP after any variation in the operating conditions, like cloudy periods, tracking incidence, shading, etc. © 2015 AIP Publishing LLC.


Martinez M.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Sanchez D.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Calvo-Parra G.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | De La Rubia O.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | And 6 more authors.
AIP Conference Proceedings | Year: 2016

This paper covers the adaptation and experimental verification that has been carried out to the Helios 3198 solar simulator to use it in the characterization of a LCPV prototype. The challenge is to deal with the diffuse light that can distort the measurement of a LCPV prototype because of the larger acceptance angle. A deflector chamber for the flash lamp has been designed and implemented to capture this diffuse light. The experimental verification has proven the reliability of the solution, demonstrating that the inclusion of this element in the equipment is not modifying the spatial uniformity and the angular distribution of the light at the receiver plane. Therefore, this work demonstrates that the Helios 3198 solar simulator, including a deflector chamber for the lamp, can be used for the characterization of a LCPV prototype. © 2016, American Institute of Physics Inc. All rights reserved.


Trujillo Serrano P.J.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Alamillo Davila C.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Martinez Montes M.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Martinez Montes M.,Complutense University of Madrid | And 8 more authors.
Progress in Photovoltaics: Research and Applications | Year: 2013

A photovoltaic (PV) hybrid system combines PV with other forms of electricity generation, usually a diesel generator. The system presented in this paper uses concentration photovoltaic (CPV) as the main generator in combination with a storage system and the grid, configured as the backup power supply. The load of the system consists of an air conditioning system of an office building. This paper presents the results obtained from the first months of operation of the CPV hybrid system installed at Instituto de Sistemas Fotovoltaicos de Concentraciõn facilities together with exhaustive simulations in order to model the system behaviour and be able to improve the self-consumption ratio. This system represents a first approach to the use of a CPV in office buildings complemented by an existing AC-coupled hybrid system. The contribution of this paper to the analysis of this new system and the existing tools available for its simulation, at least a part of it, can be considered as a starting point for the development of these kinds of systems. Copyright © 2013 John Wiley & Sons, Ltd.


Rubio F.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Martinez M.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Sanchez D.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Aranda R.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc
Conference Record of the IEEE Photovoltaic Specialists Conference | Year: 2011

ISFOC has completed the installation and acceptance of the first MW, so it is the moment for beginning with the operation and maintenance of the plants. In this paper, ISFOC will give the results of the demonstration plants. First of all we make the comparison between the production of CPV and PV systems in Puertollano. A performance study of the production is also presented to show if there is degradation after two years of operation. At the same time we have carried out the analysis of Operation and Maintenance issues, showing the possible solutions for some of the problems. Finally, a detailed study of the module condensation in the demonstration plant is also presented. © 2011 IEEE.


Rubio F.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Martinez M.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Sanchez D.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Aranda R.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc | Banda P.,Institute Sistemas Fotovoltaicos Of Concentracion Isfoc
AIP Conference Proceedings | Year: 2011

ISFOC has completed the installation and acceptance of the first MW, so it is the moment for beginning with the operation and maintenance of the plants. In this paper, ISFOC will give the results of the demonstration plants. First of all we make the comparison between the production of CPV and PV systems in Puertollano. A performance study of the production is also presented to show if there is degradation after two years of operation. At the same time we have carried out the analysis of Operation and Maintenance issues, showing the possible solutions for some of the problems. Finally, a detailed study of the module condensation in the demonstration plant is also presented. © 2011 American Institute of Physics.

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