John has used a solar simulator setup to measure the relation between the voltage and the current of a small photovoltaic cell (40 cm long and 40 cm wide). The measurement setup maintains the standard measurement conditions: the temperature is controlled to 25oC, the incident spectrum is the AM1.5 spectrum and the incident power density is 1000W/m2. The result is illustrated in the figure below.
Calculate the short-circuit current density (in mA/cm2).
John determined that the maximum power he could get out of this module is 19.5 W. Calculate the fill factor of the module (in %).
What is the efficiency of the module (in %)?
John decides to connect two of these modules with strips. This results in an additional 2mΩ series resistance loss. Which is the new fill factor (in %)? (Hint: use the voltage drop at the maximum power point).
first answer is 25
second answer: 81.25
third answer: 12.187