Power Rating Based on Two Different Spectroheliometers with Lattice-Matched (LM) and Upright Metamorphic (UMM) Component Solar Cells

Synthetic and empirical data have been used to explore the influence of spectral mismatch between MJ cell technologies on outdoor CPV module rating uncertainty. Calibration biases are attenuated by tightly filtering spectral conditions to a spectral matching ratio (SMR) of 1 ± 2.5%. The sensitivity of calibrated current to spectral deviations greatly depends on the direction and distribution of the deviations on the SMR space.