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External limiting an GTIL2 SUN-1000G2 with raspberry
(02-01-2019, 07:39 PM)Wolf Wrote: Solardad,
Don't give up yet, Again with two CT's wired in parallel (1 CT on L1 and the other CT turned 180 going around L2)  going to 1 GTLI 2000 you can effectively stop exporting to the grid because you are monitoring both phases.
I think I may get one sooner than later and verify that it will work. but I'm sure it will.

Wolf

Update: Yessssss it will work Auto sensing.

I think that is a typo/error, the spec from the manufacturer (Deye) only states 185v-265v AC for the 2000w version:
https://www.deyeinverter.com/product/grid-tie-inverter-with-limiter/solar-power-grid-tie-inverter/portable-cart-2-2-2.html

Also I believe it is still possible to backfeed with two CT in parallel monitoring two phases to a single inverter. The only difference would be that the meter may not account for the backfeed since the backfeed will be the delta to the other leg. However it is still possible for the utility to monitor for prolonged unbalanced backfeeding. Unfortunately the only clear solution to minimize backfeeding is a limited inverter per phase. 

lepdiypowerwalls
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Well as soon as I get my IoTaWatt hooked up and running I will find that out for sure as it will monitor my incoming Split phase from the grid and my production from my 1000GTIL2. That will tell me if there is an imbalance on the mains when the GTIL fires up. All I know at this point is that when I look at my power companies graph of my power consumption it clearly shows very low consumption when my GTIL is up and running.
Unfortunately ground is frozen so I cannot run the conduit to the meter yet to put another set of CTs on the mains. But as soon as that's done I will let you guys know what the outcome is.
I also sent the company a question about the 2000GTIL2 regarding split phase output.

Later
Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 60mΩ or below Smile
Last count as of 2/16/2019
Total Number of Cells           2290
Cells  >80% of Capacity        1555
Cells <79% of Capacity         713
Cells >2200mAh & ≥ 80%     1129
Google Drive for info https://drive.google.com/drive/folders/1...sp=sharing
Not your average Wolf       
            Cool



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Shoot... one detail that I over looked on the 2000 version, DC input range only starts at 45. No lower option like the 1000.

I have a battery bank and 45v is at the high end so I could not use roughly half of my battery pack, Chevy volt at 44.4 nominal, 12s.

Probably stick with the 1000.
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The 1000W Wind GTIL 24V unit has a start at 23V and accepts upto 60V so can work on 48V, but..... The unit has an internal limiter and tried hooking it up to the battery through a 6A breaker (did not want to fry the unit) but the wind units have larger input capacitors and I could not get the breaker to stay on as it would trip immediately with a minimal charge into the capacitors. As the capacitors are at the other side of a 3 phase bridge rectifier and I was connecting the battery via 2 legs I thought I would end up blowing the bridge diodes as I am guessing these are only rated for around 40A... so I may end up trying to slow charge (via a long wire) to get it hooked up with no magic smoke.

I had though that another way to control the output is to just simulate an AC waveform from the audio port on a raspberry with a way to switch the phase around (crossover switch) and send this into the internal limiter port. If you need more output, just send a small 50Hz signal and the unit should ramp up, reverse the polarity and do the same to decrease the output. Get the data from the wifi to see what the output actually is. That is if the 50Hz input signal can be out of phase with the actual output, which I'm presuming it can.
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(02-02-2019, 12:46 PM)Solardad Wrote: Shoot... one detail that I over looked on the 2000 version, DC input range only starts at 45. No lower option like the 1000.

I have a battery bank and 45v is at the high end so I could not use roughly half of my battery pack, Chevy volt at 44.4 nominal, 12s.

Probably stick with the 1000.
FYI

Additional info on the 2000.

Email I got back from NingBo Deye Inverter Technology Co.,Ltd.

Sun2000 can’t work at 110v only 220v


--------------原始邮件--------------
发件人:"浙江华企发件邮箱,请勿回复 "<admin3@hwaq1.cc>;
发送时间:2019年2月2日(星期六) 凌晨5:25
收件人:"yinhk" <yinhk@deye.com.cn>;
主题:NingBo Deye Inverter Technology Co.,Ltd.
-----------------------------------

Question.
Does the 2000GTIL2 work similar as the 1000GTIL2 and is able to supply power to both legs of a split phase 220 circuit?
I have a 1000GTIL2 running and it supplies 110 to both the L! and L2.
Does the 2000GTIL work the same way?

Thanks

Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 60mΩ or below Smile
Last count as of 2/16/2019
Total Number of Cells           2290
Cells  >80% of Capacity        1555
Cells <79% of Capacity         713
Cells >2200mAh & ≥ 80%     1129
Google Drive for info https://drive.google.com/drive/folders/1...sp=sharing
Not your average Wolf       
            Cool



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