Advanced Input Options: Full I-V Curves
If the user has full I-V curve data measured at STC (and any other temperature/irradiance conditions), the “Full IV Curves” input option is recommended. The primary benefit of this feature is that PlantPredict will automatically extract the maximum power, voltage and current at maximum power, short-circuit current, and open-circuit voltage of all I-V curves provided. Furthermore, if the user provides performance data at multiple temperatures and irradiances, the temperature coefficients and relative efficiencies will be automatically calculated, respectively. The only required I-V curve is one measured at 25⁰C, 1000 W/m2.
Click “Add New Module”, and then select “Enter Full I-V Curves” when the modal appears.
In order to add data manually, click “Add Curve” to add data at a new irradiance (within a temperature tab). Add data at a different temperature by adding a temperature tab to the data matrix. The minimum required (I, V) points for each curve is 40.
Once a curve is supplied at STC, the electrical characteristics at STC will be extracted. When sufficient data is supplied at a given temperature, the relative efficiencies for each irradiance will calculate automatically. Similarly, when data is provided at 1000 W/m2 for multiple temperatures, the temperature coefficients will calculate automatically.
Alternatively, the user can download the .xlsx template and upload it to automatically populate the Full I-V Curves page.
Clicking “continue” will land the user on the main module file creation page documented in the guide for “Generating a Module File From Basic Data”. The “Electrical Characteristics at STC”, “Temperature Coefficients” and table of relative efficiencies in the “Advanced Tuning” section will be prepopulated with any data processed from the Full I-V Curves page.