Photovoltaic concentrator systems allow for substantial reduction in system cost substituting high cost photovoltaic panels with low cost reflective surface and a small amount of high efficiency concentrator cells. Mirror based concentrator systems, complete with accurate tracking, allow for the highest concentration levels but the use of single large parabolic mirrors is expensive, adds technical complexity to the system and suffers from hot spots problems requiring the use of mixing secondary systems. The use of an array of small commercial flat mirror mounted on a metallic support structure allows for a cheaper system and greatly improves the illumination uniformity of the target. We propose a non-imaging mirror based two axis tracking concentrator capable, with no secondary concentrator, of an uniform 120 sun illuminated field.
High performance photovoltaic concentrator systems
MARTINELLI, Giuliano;BUTTURI, Maria Angela;MALAGU', Cesare;STEFANCICH, Marco;VINCENZI, Donato;PARRETTA, Antonio;
2002
Abstract
Photovoltaic concentrator systems allow for substantial reduction in system cost substituting high cost photovoltaic panels with low cost reflective surface and a small amount of high efficiency concentrator cells. Mirror based concentrator systems, complete with accurate tracking, allow for the highest concentration levels but the use of single large parabolic mirrors is expensive, adds technical complexity to the system and suffers from hot spots problems requiring the use of mixing secondary systems. The use of an array of small commercial flat mirror mounted on a metallic support structure allows for a cheaper system and greatly improves the illumination uniformity of the target. We propose a non-imaging mirror based two axis tracking concentrator capable, with no secondary concentrator, of an uniform 120 sun illuminated field.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
