Cheap China Solar Controller Failure
For a couple days been noticing higher than the 14.6 voltage,.....going to 15, and even 15.5,....I knew something was not right. The next day it was showing 16, then quickly went to 17+.......I quickl...
Forum Discussion
Yes, the Eco-W and all the other MPPT controllers fancy or not AFAIK are the same way. Once they get the batts to Vabs, they go out of MPPT but still are a buck converter. When the buck converter is operating without MPPT, they call that PWM Mode.
In Float, you see what the battery is taking in amps and then if you turn a load on, amps intake goes up. That amps intake is often seen as being more than panel Isc so you know the buck converter is still in business.
I am not too sure that is correct terminology, but that's what they call it. I think PWM just refers to the method of maintaining the voltage at a set-point by switching the panel on and off by Series or Shunt method. A PWM controller has no buck converter
But a buck converter has a setting for output voltage, so if you have that, why would you need any PWM to monkey with the panel input to the controller?
In Float, you see what the battery is taking in amps and then if you turn a load on, amps intake goes up. That amps intake is often seen as being more than panel Isc so you know the buck converter is still in business.
I am not too sure that is correct terminology, but that's what they call it. I think PWM just refers to the method of maintaining the voltage at a set-point by switching the panel on and off by Series or Shunt method. A PWM controller has no buck converter
But a buck converter has a setting for output voltage, so if you have that, why would you need any PWM to monkey with the panel input to the controller?
