Solar module performance varies with ambient temperature and light intensity. Ratings are therefore standardized at a temperature of 25°C and solar irradiance of 1000 w/m² to ensure consistency. The solar modules are rated with their outp. Solar module performance varies with ambient temperature and light intensity. Ratings are therefore standardized at a temperature of 25°C and solar irradiance of 1000 w/m² to ensure consistency. The solar modules are rated with their output open circuit voltage (Voc), short circuit current (Isc) and peak power (Wp). That means these three parameter. Drawing a graph with voltage on the X-axis and currentson the Y-axis illustrates the V-I characteristics of a solar module, showing how voltage and current relate.Under Standard Test Condition positive and negative terminal of a solar module are short circuited, then the current delivered by the module is short circuit current. Bigger value of this current indicates betterness of the module. Although under standard test condition, this current also depends upon the area of the module exposed to the light. As. Under standard test conditions with no load connected, the voltage output of a solar module, known as Voc, depends on the cell technology used. Higher Voc values indicate superior module quality. This open circuit voltage of a solar module also depends upon operating temperature.This is the maximum amount of power which can deliver by the module Under Standard Test Conditions. For a fixed dimension of a module higher the maximum power better the module. Maximum power also called peak power and this is denoted as Wm or Wp. A solar module can be operated in any voltage and current combination upto Voc and Isc. But for a part.
