Forum Discussion
time2roll
May 04, 2018Nomad
For the OP on shading...
These panels have bypass diodes and separate the panel in three sections. If one cell is shaded in one section then that section will produce virtually no power. However the bypass diode will allow all other sections or panels in series to pass through power. So with two panels you have six sections that either produce 10 volts each or they don't. Four sections with sun you get 40 volts etc.
With parallel any shading on one panel will drop the voltage and the entire panel will not contribute.
Filtered sun and shade will be some mix of all this depending on conditions.
The point is all power does not shut down with series. And parallel is not exactly perfect either. Shade hurts, look for a sunny place to park.
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These panels have bypass diodes and separate the panel in three sections. If one cell is shaded in one section then that section will produce virtually no power. However the bypass diode will allow all other sections or panels in series to pass through power. So with two panels you have six sections that either produce 10 volts each or they don't. Four sections with sun you get 40 volts etc.
With parallel any shading on one panel will drop the voltage and the entire panel will not contribute.
Filtered sun and shade will be some mix of all this depending on conditions.
The point is all power does not shut down with series. And parallel is not exactly perfect either. Shade hurts, look for a sunny place to park.

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