[fehmi]

Step 4 - Determining the value of Rsh

As in the example presented in the study referred to in the first topic, I will also choose to calculate the value of Rsh, in order to obtain a voltage drop in Rsh with the ratio of 1 mV for each 10W / m2. So for a Solar Radiation 1300W / m2 intend to get a voltage drop of 130mV Rsh. Using Ohm's law as R = V / I, we Rsh = 0,130V / 0,075A ie Rsh = 1.7333333 Ohm.

Hi for all

Please I want illustration about the ratio ( 1 mV each 10 W/m2 ) how to use or supposed these ratio ???

thank a lot for brilliant job.

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I get it ....

when solar radiation is 1300 w/m2 , Isc was 75 mA
so voltage drop is : Isc = 75mA * Rsh = 1.74 ohm = 130 mV
therefore
1300 w/m2 --------> 130 mV drop
10 w/m2 --------> X mV drop
so X= 1 mV