Castelfranco di Sopra, Italy
Castelfranco di Sopra, Italy

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Antonini A.,Italian Institute of Technology | Antonini A.,CPower Srl | Butturi M.A.,CPower Srl | Zurru P.,CPower Srl | And 2 more authors.
Progress in Photovoltaics: Research and Applications | Year: 2015

A concentrating photovoltaic module design incorporating a spatial spectral splitting approach with dichroic mirrors is presented. The advantages of this technology are reported, as well as a short description of the design evolution process. The experimental results are summarised, highlighting possible improvements through the use of different production processes and components. Materials, design and assembly procedures are taken into account, keeping in mind the fundamental constrains of cost and reliability of the final product. Finally, the possibilities for market exploitation of this technology in the current photovoltaic landscape are analysed. Copyright © 2014 John Wiley & Sons, Ltd.

Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: ENERGY-2007-2.1-03 | Award Amount: 11.45M | Year: 2008

APOLLON proposal concerns the optimisation and development of Point focus and Mirror Based Spectra Splitting photovoltaic concentrating (CPV) systems (multi-approach). The different technology paths will be followed with due focalisation on the recognised critical issues related to each system component in order to increase CPV efficiency, assure reliability, reduce cost and environmental impact. MJ solar cells will be manufactured by using new materials and deposition technologies allowing reaching and even surpassing the MJ solar cell efficiency target set on the European Strategic Research Agenda on Concentration Photovoltaics. Optimisation of Fresnel and Prismatic lens along with the development of new non-imaging, low F/#, high concentration, cell self-protecting stable optics will allow getting high optical efficiency and wide acceptance angles. New concepts will be applied for Mirror based spectra splitting systems which will allow eliminating the cooling needs. Both the optimised and the new technologies will be properly tested to get reliable a long life time CPV systems. High Integration obtained with microelectronic and automotive light technologies for high throughput module assembly techniques, along with intelligent solutions for accurate, reliable, cost effective tracking and reduced mismatch losses will be addressed. Prototype systems will be developed for a full environmental and economical assessment finally leading to economically-attractive concentrating photovoltaics. In APOLLON all the actors chain, from Universities, SME, Big Enterprise up to the final End-User will bring to present scientific valuable, exploitable and durable products, with results dissemination all around Europe.

Antonini A.,Italian Institute of Technology | Antonini A.,CPower Srl | Butturi M.A.,CPower Srl | Zurru P.,CPower Srl
Progress in Photovoltaics: Research and Applications | Year: 2015

The design and the technical features of a low concentration photovoltaic module based on silicon solar cells are here presented, reporting manufacturing topics and results of experimental tests. The product here described has been developed, taking into account costs, efficiency, reliability, and investments required for its industrial production and for its commercial exploitationThe design of a specific low concentration photovoltaic module is described here, with a report of the results of the first experimental tests of its industrial version. The product is a 20× reflective concentrating photovoltaic module based on silicon solar cells. The optics were designed to mount these modules on 2-axis trackers with angular pointing accuracy of up to about ±4° without significant power loss. The high angular acceptance of the non-imaging optics permits the collection of a high fraction of the circumsolar light impinging on the module's frontal aperture, providing high direct normal irradiance efficiency in real operative conditions. Many technical features of the product are described here, in which features are the result of 5 years of product development in order to improve performance, reliability and cost issues. © 2015 John Wiley & Sons, Ltd.

Parretta A.,University of Ferrara | Parretta A.,ENEA | Aldegheri F.,University of Ferrara | Antonini A.,CPOWER Srl | And 2 more authors.
Journal of Optics (United Kingdom) | Year: 2012

In this paper we describe two optical characterization methods applied to photovoltaic solar concentrators. Both methods are of the 'inverse' type, where the light source is applied in place of the receiver in order to reverse the path of light inside the concentrator. The first method is the 'inverse illumination method', already known in the literature, whereas the second one is a method obtained by modifying the 'inverse luminescence method', operating with electroluminescent light. Both methods use ideal Lambertian sources for producing the inverse light and can be applied to any type of solar concentrator (photovoltaic or thermodynamic). The optical simulations show their equivalence in obtaining the angular distribution of the transmission efficiency function of Rondine® PV concentrators, but the original inverse illumination method requires a simpler configuration and significantly lower simulation times. © 2012 IOP Publishing Ltd.

Parretta A.,University of Ferrara | Parretta A.,ENEA | Martinelli G.,University of Ferrara | Antonini A.,CPower SRL | And 2 more authors.
Optics InfoBase Conference Papers | Year: 2010

We discuss two classes of methods for characterizing solar concentrators (mainly nonimaging): "direct" and "inverse", in relation to the way these are irradiated. We derive the optical collection efficiency under collimated and diffused light. © 2010 Optical Society of America.

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