A given solar cell has the following specifications:

Question

Isc=4A
Voc=0.7V
36 identical cells with the above specifications are to be interconnected to create a PV module.

What is the open-circuit voltage (in V) of the PV module if all the solar cells are connected in a series configuration?

What is the short-circuit current (in A) of the PV module if all the solar cells are connected in a series configuration?

Now suppose that the PV module mentioned above is set up using a series connection of solar cells with the above mentioned specifications. Two of the solar cells have gone faulty (completely stopped generating power), but fortunately you have bypass diodes connected across the faulty solar cells. Assume that the bypass diodes are ideal (has a 0 voltage drop when conducting).

What is the measured open-circuit voltage (in V) of the above PV module with the faulty solar cells?

Answer 1

When you conect cells in series... the total voltage is CellV*number of cells. The current remain the same. without losses, the voltage remain the same.

Answer 2

25.2 Volts

4A

23.8 Volts.

Answer 3

No Ratan, C is the same with A..... 25.2Volt, due to no Voltage drop. This is the correct.

Answer 4

The answer is 25.2 V, 4 A, and 23.8 V

When two cells go faulty they do not produce power and since you by-pass them (they are as if they do not exisit, i.e., their voltage contribution becomes Zero, hence the total module voltage = 25.2-1.4 = 23.8 v