Problem 1. We have identical crystalline silicon solar cells available, with a short circuit current of 4 A and an open circuit voltage of 0.6 V at STC. These cells are used to make a PV module with 54 cells connected in series. I. What is the open circuit voltage of the module at STC? Assume that the interconnection losses are negligible. II. What is the short circuit current of the module at STC? III. Assume that the module does not have any bypass diodes. If the module is partially shaded and one of the cells is only able to produce 2 A, what will be the new short circuit current under these conditions?

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Problem 1.

We have identical crystalline silicon solar cells available, with a short circuit current of 4 A and an open circuit
voltage of 0.6 V at STC. These cells are used to make a PV module with 54 cells connected in series.

I. What is the open circuit voltage of the module at STC? Assume that the interconnection losses are
negligible.
II. What is the short circuit current of the module at STC?

III. Assume that the module does not have any bypass diodes. If the module is partially shaded and one of
the cells is only able to produce 2 A, what will be the new short circuit current under these conditions?

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