My friend said that he is seeing multiple blown diodes on his panels. He has sets of two panels in parallel and blames the blown diodes on paralleling panels. I can't think of a reason why paralleling panels will cause diodes to fail. Can you?
I'm tempted to blame either inadequate diodes or bad connections. By the way, these panels are quite a few years old.
Here's my model of parallel panels. Does this agree wtih your understanding of panel construction? Unless the inverter is doing something really ugly, it seems this should be safe.
ParallelPanels.jpg
Yet this happens:
blowndiodes.jpg Thank you.
I'm tempted to blame either inadequate diodes or bad connections. By the way, these panels are quite a few years old.
Here's my model of parallel panels. Does this agree wtih your understanding of panel construction? Unless the inverter is doing something really ugly, it seems this should be safe.
ParallelPanels.jpg
Yet this happens:
blowndiodes.jpg Thank you.
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