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High concentration photovoltaics - state-of-the-art and novel approaches

: Willeke, G.

Kurokawa, K. ; Institute of Electrical and Electronics Engineers -IEEE-:
3rd World Conference on Photovoltaic Energy Conversion 2003. Proceedings. Vol.C : Joint conference of 13th PV Science & Engineering Conference, 30th IEEE PV Specialists Conference, 18th European PV Solar Energy Conference ; Osaka International Congress Center "Grand Cube", Osaka, Japan, 11 - 18 May 2003
Osaka, 2003
ISBN: 4-9901816-2-X
World Conference on Photovoltaic Energy Conversion (WCPEC) <3, 2003, Osaka>
PV Science and Engineering Conference <13, 2003, Osaka>
PV Specialists Conference <30, 2003, Osaka>
European PV Solar Energy Conference <18, 2003, Osaka>
Fraunhofer ISE ()

The paper presents a discussion of the state-of-the-art, novel concepts and the perspectives of high concentration photovoltaic HCPV technology. Commercially available HCPV generator designs are based on moving up to hundreds of square meters of mirrors or Fresnel lens modules in two-axis tracking units deliverings tens of kW of peak power. These units usually have a mass of up to several tons because of mechanical stability and wind load reasons and therefore have to be considered not suitable for the particularly rapidly expanding roof-mounted grid-connected market. In the present work a novel concept is presented which is based on tracking on the cell rather than the module level. This building integration HCPV design concept involves moving the concentration optics inside a stationary glass housing that will protect the micro-trackers from wind strains.