โJun-07-2015 08:40 AM
โJun-11-2015 05:24 AM
12thgenusa wrote:jrnymn7 wrote:
Re; 100% SOC,
The controller has no idea at what soc the bank is at. Yesterday, it was showing 72%, but after I temporarily disconnected things to do a flat comparison, and reconnected, soc was 50%, meanwhile the bank was at about 95%.
I don't' know the process by which it would ever know. At least the Trimetric counts amps in and amps out with an adjustable discount for amps in. But it does not account for Peukert effect.
The controller has no way of knowing what portion of its output goes to the battery and what may go directly to loads. It doesn't know if amps have been added to the battery through other means. It doesn't know how many amps have been discharged from the battery. Determining SOC from battery voltage while charging or discharging is not possible. Does the manual say how it is supposed to work?
โJun-11-2015 05:21 AM
12thgenusa wrote:jrnymn7 wrote:
Yeah, he does one with a bosch drill, as well, and although it's at float voltage, it is clearly in mppt mode, as input v & a are way different than output v & a. It appears maybe these things never go out of mppt? I have yet to see mine or any of the ones in the videos ever match input/panel amps to output amps, as I would expect to see in pwm mode.
No. Tracking and bucking are two separate functions. It is always bucking panel voltage down to battery voltage no matter what mode it is in. In fact, unless in poor light conditions the difference between panel and battery voltages will be greater during float and abs than it is when in mppt.
โJun-11-2015 05:07 AM
jrnymn7 wrote:
Re; 100% SOC,
The controller has no idea at what soc the bank is at. Yesterday, it was showing 72%, but after I temporarily disconnected things to do a flat comparison, and reconnected, soc was 50%, meanwhile the bank was at about 95%.
โJun-11-2015 04:52 AM
โJun-11-2015 04:47 AM
jrnymn7 wrote:
Yeah, he does one with a bosch drill, as well, and although it's at float voltage, it is clearly in mppt mode, as input v & a are way different than output v & a. It appears maybe these things never go out of mppt? I have yet to see mine or any of the ones in the videos ever match input/panel amps to output amps, as I would expect to see in pwm mode.
โJun-11-2015 04:37 AM
โJun-11-2015 04:33 AM
โJun-10-2015 06:43 AM
โJun-09-2015 02:02 PM
โJun-09-2015 11:57 AM
โJun-09-2015 11:50 AM
โJun-09-2015 10:56 AM
โJun-08-2015 07:23 PM
red31 wrote:
this video show @ ~ the 5:20 mark shows boost to float, shortly after a scroll though batt (battery charge:float) and pv shows pv mode: mppt, I don't believe the pv mode: mppt will change but do the research!
https://www.youtube.com/watch?v=KHvLWjNwVwM
โJun-08-2015 07:10 PM
โJun-08-2015 06:50 PM