Not getting enough power

A place where users can meetup with other FlexPower One users and can find support for one another. A great place for people who have not purchased the FlexPower One yet to look up information.
Post Reply
wpmaura
Forum Whiz
Posts: 46
Joined: Wed Feb 19, 2020 1:25 pm
My RE system: flex power one 3kw. 16 x 6v 415ah Rolls, 15x 270watt 30V 9amp panels

Not getting enough power

Post by wpmaura »

So 2pm hot and bright and I am pulling in 900watts with 12 270 watt panels. This cant be right. Using 100feet of 8 gauge. But this seems low
raysun
Forum Emperor
Posts: 4624
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
Honda EU7000is gas fuel generator

Re: Not getting enough power

Post by raysun »

What is the battery charger doing? Is in Absorb, Float?
wpmaura
Forum Whiz
Posts: 46
Joined: Wed Feb 19, 2020 1:25 pm
My RE system: flex power one 3kw. 16 x 6v 415ah Rolls, 15x 270watt 30V 9amp panels

Re: Not getting enough power

Post by wpmaura »

absorb but now its at 900 and its with light cloud cover
raysun
Forum Emperor
Posts: 4624
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
Honda EU7000is gas fuel generator

Re: Not getting enough power

Post by raysun »

The charge controller is only going to harvest what's needed to charge the battery and service loads. During Absorb, especially in the latter time of the phase, the current requirement declines significantly.

Turn on some load, and you should see the solar harvest increase.
wpmaura
Forum Whiz
Posts: 46
Joined: Wed Feb 19, 2020 1:25 pm
My RE system: flex power one 3kw. 16 x 6v 415ah Rolls, 15x 270watt 30V 9amp panels

Re: Not getting enough power

Post by wpmaura »

I take it that float means it wont utilze much just enough to keep batteries topped up, now its back at float and at 700 and sunny, I still think something funny going on. guess only way to know is get on rood now and test all the circuit breakers one by one.
wpmaura
Forum Whiz
Posts: 46
Joined: Wed Feb 19, 2020 1:25 pm
My RE system: flex power one 3kw. 16 x 6v 415ah Rolls, 15x 270watt 30V 9amp panels

Re: Not getting enough power

Post by wpmaura »

I really cant thank you enough, for all my stupid questions. Until I get this set up for 240, really wont have much load on it, then ac during day
raysun
Forum Emperor
Posts: 4624
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
Honda EU7000is gas fuel generator

Re: Not getting enough power

Post by raysun »

wpmaura wrote: Thu May 21, 2020 12:16 pm I take it that float means it wont utilze much just enough to keep batteries topped up, now its back at float and at 700 and sunny, I still think something funny going on. guess only way to know is get on rood now and test all the circuit breakers one by one.
You could go measure stuff on the roof, but I doubt it's going to show you much - especially relative to spending some time understanding the battery charge cycle and the charge controller's role in it.

If the battery is at Float, then the controller considers it fully charged, and is only going to provide as much charge as is needed to keep the battery full. That's what "controller" in "charge controller" implies.

For example, my array is 6,000 watts. My two charge controllers rarely, if ever, harvest that much power. Why? Is my array defective somehow? Not in the least. The answer is simply my system rarely demands that much power. When my battery starts charging at 7AM the sun is low in the sky and not providing sufficient power during the Bulk phase to drive the array to maximum. By about 9:30, with the sun much higher in the sky, the battery is to the point the charge cycle switches from Bulk to Absorb, and power demands start steadily declining. By about 11:30 the battery is in Float, and charging demand is reduced to about 100 Watts. Unless I'm running some sort of house load, the charge controllers have no need to harvest more than that. My array is not defective, it's just that its potential is not needed.
Last edited by raysun on Thu May 21, 2020 5:56 pm, edited 1 time in total.
raysun
Forum Emperor
Posts: 4624
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
Honda EU7000is gas fuel generator

Re: Not getting enough power

Post by raysun »

wpmaura wrote: Thu May 21, 2020 12:25 pm I really cant thank you enough, for all my stupid questions. Until I get this set up for 240, really wont have much load on it, then ac during day
Yes, most days in the afternoon, if I'm up to fiddling, I'll pump water from one of my storage tanks to the other, just so some of those photons won't have traveled 93 million miles just to die in vain.
Post Reply