Question

4. Assume the cell characteristics for the figure shown below are: Voc=0.5 and Ise=4 A, draw the clectrical characteristics for the three panels connccted in series when (i) no shading (ii) partial shaded string (18 cells) receiving 25 % of sunlight (ii) partial shaded string (18 cells) receiving 50 % of sunlight (iv) compare maximum power in the previous parts.

Answer 1

Voc → Is a characteristic of liden: Solar cell characteristics Voc=0.5 Ise=4 typical I-V {Hectrië} characteristig of a solar cell given by :- I Isc Pmax Impe Vmpp Voc V Solar-cell band-gop, so for a solar cell it remains same, irrespective of Amount of Sunlight Exposure.

(i) for No - shaking means full sunlight exposure. Isc = 4A ; Voc = 0.5V IN MPP = 480.5=2w Isc = 4Ah 0-5 V > (ii) for partial shaded string of 18 cells receiving 25% sunlight Voc = 18X0.5V = guseries (connection Isc =25% Ise = 4*4A = gu IA In IA mpp - Pronay = 1x9 =gw gv v

(iii) - String of 18 celles 18 celly receiving 50% of Sunlight. Isc = 50% XC984A 1 x4A = 2A Voc = 18X0-5V- gu In RA Pmay- = 2x9 =18W E gr (iv) Max Pewer is in case of 50 % Sublight with 18 cell 18W strings