mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
I gave up a long long time ago... what I need to know is that if you go with 30V or more panels, and have a 12V system, and go over about 400 watts to 750 watts in 28 -30V panels, then you want to look at a MPPT controller for charging your batteries.
If you are at or under 360W and have 12V panels, PWM controllers that are usually 1/3 the price of MPPT controllers are what you should be considering, and your 12V panels will most likely be more expensive per watt.
Those are the current Break even sizes in watts for charge controllers currently. YMMV... I am in the portable panel camp, none of this really applies to me except as an exercise. My take on it is that MPPT is poorly understood and poorly marketed as to what slight benefits it might provide in the smaller systems, and break even points when it comes to cost per amp now in solar panel costs, which continue to drop, the price of solar panels, in terms of $ per watt.
39 pages, and jrneyman and others, myself included, still don't understand fully, the actual benefits per $ /ah charge rate for MPPT.
If you are at or under 360W and have 12V panels, PWM controllers that are usually 1/3 the price of MPPT controllers are what you should be considering, and your 12V panels will most likely be more expensive per watt.
Those are the current Break even sizes in watts for charge controllers currently. YMMV... I am in the portable panel camp, none of this really applies to me except as an exercise. My take on it is that MPPT is poorly understood and poorly marketed as to what slight benefits it might provide in the smaller systems, and break even points when it comes to cost per amp now in solar panel costs, which continue to drop, the price of solar panels, in terms of $ per watt.
39 pages, and jrneyman and others, myself included, still don't understand fully, the actual benefits per $ /ah charge rate for MPPT.
