mppt or pwm An opinion from Victron
Hi all, Victron, which makes high quality equipment, has charge controllers. At the end of an overview they give their description of the differences between PWM and MPPT. They do not support it wi...
Forum Discussion
I wonder what would have happened if they had compared "No controller" results with the controller results?
In my older RV, I had a PWM controller - 15 amp Mark III I think, and I installed a 3 way on-off-on switch with power from the panels going to the common terminal, and one going to the factory input for the PWM and the other going directly to the amp meter output. So I could switch to bypass the controller, and usually get an extra 1/4 - 1/2 amp according to the cheap meter on the controller. While camping, I could switch to the output, and get an extra couple of amp hours daily from the panels.
Now I have a 300 watt system and Solarbooste 50 amp MPPT controller. I always have wondered if the amperage will increase or not when bypassing the controller. At a lower output voltage, solar panels will increase it's amperage flow. So with a MPPT controller changing the output volts higher in order to convert it to a higher amperage, it might be slowing the charge rate.. .
Fred.
In my older RV, I had a PWM controller - 15 amp Mark III I think, and I installed a 3 way on-off-on switch with power from the panels going to the common terminal, and one going to the factory input for the PWM and the other going directly to the amp meter output. So I could switch to bypass the controller, and usually get an extra 1/4 - 1/2 amp according to the cheap meter on the controller. While camping, I could switch to the output, and get an extra couple of amp hours daily from the panels.
Now I have a 300 watt system and Solarbooste 50 amp MPPT controller. I always have wondered if the amperage will increase or not when bypassing the controller. At a lower output voltage, solar panels will increase it's amperage flow. So with a MPPT controller changing the output volts higher in order to convert it to a higher amperage, it might be slowing the charge rate.. .
Fred.
