Serial vs Parallel Solar Panel Shading
I was asked if a post in another thread if this "Serial is actually better for shading (than parallel) if that is a concern for you." was a typo. It is not a typo but panel shading is not always under...
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The PWM controller does not operate at Isc. Isc is a short circuit current with zero volts on panel's terminals. What PWM controller does is switching the current on and off at BATTERY voltage once it starts controlling. Since solar panels are rated at their Maximum Power Point, only MPPT controller extracts panel's rated power because it operates at Maximum Power Point and not battery voltage which is lower.
With panels in parallel only panels in shade are affected. With panels in series you have to rely on bypass diodes to get any output which is not what I am prepared to do.
How MPPT controller works depends entirely on the manufacturer of the controller and we all know that there is abundance of bogus claims.
With panels in parallel only panels in shade are affected. With panels in series you have to rely on bypass diodes to get any output which is not what I am prepared to do.
How MPPT controller works depends entirely on the manufacturer of the controller and we all know that there is abundance of bogus claims.
