A methodology is presented to determine both the short‐term and the long‐term influence of
the spectral variations on the performance of multi‐junction (MJ) solar cells and concentrator …

Spectral indices can be defined to characterize how the solar spectrum affects photovoltaic
devices. The use of such indices is particularly important in technologies which are highly …

Concentrator photovoltaics (CPV) requires accuracy in optical alignment. Optical
misalignment in the module was measured and analyzed. Such information was useful to …

Starting on June 2011, NGCPV has been the first coordinated project between the European
Commission and Japanese NEDO in order to advance in the science and technology of …

For applications of stand-alone systems including an electric vehicle (EV) power station, a
tracking system with low power consumption will be demanded. One possible solution to …

The acceptance angle of concentrator modules measured by short circuit current Isc is
always larger than that by maximum power P m even by use of advanced concentrator …

CPV went off the market mainly due to problems of trackers. We are trying to solve the
tracking issue. Step 1. Control of the mating module by imperfection of tackers: We have …