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Import Measured IV

You can import a full measured I/V curve, with up to 400 points.

  1. Define your Currents and Voltages on an EXCEL document, and just "Copy" these values and "Paste" them here.
  2. When ready, a sheet "Model" will appear.
  3. Define the exact irradiance and module temperature Gref and Tref as measured during the I/V curve recording.
  4. Press "Optimize" for getting the best adjustment of the one-diode model to your data.
  5. Now you can play with the Rserie and Rshunt values for seeing their effect on the model. By clicking the default checkboxes, you can get the default values which would be proposed by PVsyst without the information of the full curve.
  6. If desired, the button Set Model to Module will transfer these model parameters to your module definition.

NB: This tool will establish the one-diode parameters using one operating condition only (usually near to the STC). This doesn't give any information about the temperature dependence, which should be defined by the muIsc and muPmpp parameters in the general dialog of the PV module.