I am new to this forum, so I hope I am posting in the correct section.
I have been studying PV installations in my region (most of which are excellent examples of bad practice )
I have just studied an 8yr old installation. There are 16 Kyocera solar panels of 120W, connected in 4 paralell series for a 48V system. However many of the panels are only operating at half their Open Circuit Voltage- ie some panels give 16V or so and others only 8V.
My question is- what effects will this have on the system? Can you have panels connected in series with such different voltages?
The total Open Circuit Voltage of the system is about 60V- but with the batteries connected no current seems to be getting to the batteries (possibly a failed charge controller)
Thanks very much for any information