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ecvolt
- 23
- 0
I would like to understand exactly what happens when a PN doped crystalline silicon cell is shaded.Lets assume we have ten solar cells wired together in a series string.That there is plenty of sunlight on the first nine cells but cell ten is completely shaded.Lets say the forward bias of each solar cell is .5 volts let's say the conventional current is moving from anode to cathode and Electron flow is cathode to anode.This would make the anode more positive {more holes} than the cathode {more electrons}When current is flowing in the first nine solar cells at a forward bias how does the tenth cell reverse in bias {now the anode is less positive and the cathode is more positive} ? Do the other nine cells which are getting plenty of photons from the sun also go into reverse bias or just the shaded cell? Is the current flow of electrons and holes in the tenth cell the shaded one going in the opposite direction of the other nine ? What causes the shaded cell to create extreme heat?Lets assume we have no by pass diodes in this ten celled string.lets assume this collection of solar cells is a solar module Thank you ecvolt.