Solar Controllers--Don't be a Sucker! :(
Just got to say it again, how it is we are sitting here for five months off grid on solar with no problems at all (third season on solar like this), using the non-programmable, non-MPPT, solar control...
Forum Discussion
It all depends on setup conditions. Temperature and battery voltage are extremely important factors for mppt efficiency. For pwm, temp and voltage are non-factors. Stating 10% gains without defining conditions is meaningless.
Typical gains of mppt are 5% over pwm. Typical conditions are: temperature is about 25C above ambient and battery voltage above 13V. It doesn't take much surface charge to bring a 12.5V battery to 13.0V.
Sal
Typical gains of mppt are 5% over pwm. Typical conditions are: temperature is about 25C above ambient and battery voltage above 13V. It doesn't take much surface charge to bring a 12.5V battery to 13.0V.
Sal
HiTech wrote:
I've sort of done a less expensive version of that for just my one panel type. I saw an honest +/- 10% full sun gain for an ideal MPPT controller vs direct to battery (PWM style). Not 30% but not 0 either. That's my working number until I collect more data under more conditions.
Jim
