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Settings Infinisolar 3-Phase 10 KW


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Hi guys, i’m very happy with this forum, because i can’t find important info elsewhere. 
Let’s start saying what installation i have:
 

I have an Infinisolar 3-phase 10KW inverter

18 panels Atersa 335Wt

6 Pylon Lithium bateries 2.4KW

Settings:

PV Energy supply priority setting: Off-Grid (I)

Max. charge current 100Amp

Max. charge current AC 50Amp

Bulk charge 53,2V

Float charge 53,2V

 

I would like to use as much battery power as possible, let’s say, discharge everyday to 25-30%.

 

I would like that any PV amount above my load will be used to charge my batteries. If PV drops below my load (clouds or towards the end of the day), the system will draw the shortfall from my 6 Pylon batteries.

Once my PV is down to 0, it will draw my full load from the Pylon, (with gridhelp; in case cooker, kettle and coffeemachine are needed at the same time)

Once my Pylon voltage drops to my 'Back to Grid voltage (discharged to 25% i don’t know what voltage that is, yet), it will switch over to Utility.

It will run on Utility until my Pylon’s have been recharged back to the 'Back to Discharge Voltage' setpoint (what voltage setting?). Then it will run on PV/Battery again until my Pylon’s voltage drops to my 'Back to Grid voltage setpoint again - and so on...

 

Questions:

What settings should i make for:

-Battery cut-off discharching voltage when grid is available?

-Battery re-discharging voltage when grid is available?

-Battery cut-off discharching voltage when grid is unavailable?

-Battery re-discharging voltage when grid is unavailable?

-Max. battery discharge current in hybrid mode?

 

Any help would be more than welcome again.

Thnx in advance John Bijker

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4 hours ago, John Bijker said:

Questions:

What settings should i make for:

-Battery cut-off discharching voltage when grid is available?

-Battery re-discharging voltage when grid is available?

-Battery cut-off discharching voltage when grid is unavailable?

-Battery re-discharging voltage when grid is unavailable?

-Max. battery discharge current in hybrid mode?

What possibilities do you have when you put your inverter in PYL mode? Guess it will automatically fill in the right values.

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On 2020/07/31 at 5:42 PM, John Bijker said:

Questions:

 

What settings should i make for:

-Battery cut-off discharching voltage when grid is available?

-Battery re-discharging voltage when grid is available?

-Battery cut-off discharching voltage when grid is unavailable?

-Battery re-discharging voltage when grid is unavailable?

-Max. battery discharge current in hybrid mode?

Hi John!  We have very similar systems and use them in the same way, so I will gladly share my settings with you.

I run my inverter in "Grid-tie with backup II" mode and use "PV - Battery - Grid" to supply load when PV is available.  I use 100A as max discharge in hybrid mode because that equates to 5kW (my inverter's upper limit) and I don't (usually) exceed that.  I don't export to grid and I don't use the AC charger either (I have enough solar capacity to cater for all but the worst weather, plus enough battery storage to survive an off-grid night without fully charged batteries as happened on July 28).

My bulk & float charging is set to the same voltage because the BMS system inside the Pylontechs manage their own bulk and float cycles any way.  I use Pylontech's lower voltage limit (52.5V) for charging.  I've brought my maximum charge current down somewhat (to 70A) because it allows the inverter to run a lot cooler, whilst still recharging my batteries by noon.

I run the following battery cut-off points.  I found that 48.4V equates to about 25-30% SoC given my base load.  I've selected a 0.5V lower limit for when the gird is unavailable in which case I asume (never had tit happen yet!) that the BMS in the batteries will decide when to stop the party:

image.png.6e94019f7839d621a8ab69f8c3bd9a92.png

My base load at night drops to about 500W and in mid-winter (longer night) it runs the batteries down to about 40% SoC.  Here's a graph showing battery voltage vs. SoC over the past few days to give you an idea.  July 28 shows you how much the voltage can vary whilst charging/discharging during an overcast day (while SoC remains constant), and also how my 48.9V cut-off seems to be very tough to breach:

image.thumb.png.17d7f8df7f88117e1be2f9ca16720d9f.png

Hope this helps!

Edited by ChristoSnake
Removed lots of blank lines at end of post
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10 hours ago, ChristoSnake said:

Hi John!  We have very similar systems and use them in the same way, so I will gladly share my settings with you.

I run my inverter in "Grid-tie with backup II" mode and use "PV - Battery - Grid" to supply load when PV is available.  I use 100A as max discharge in hybrid mode because that equates to 5kW (my inverter's upper limit) and I don't (usually) exceed that.  I don't export to grid and I don't use the AC charger either (I have enough solar capacity to cater for all but the worst weather, plus enough battery storage to survive an off-grid night without fully charged batteries as happened on July 28).

My bulk & float charging is set to the same voltage because the BMS system inside the Pylontechs manage their own bulk and float cycles any way.  I use Pylontech's lower voltage limit (52.5V) for charging.  I've brought my maximum charge current down somewhat (to 70A) because it allows the inverter to run a lot cooler, whilst still recharging my batteries by noon.

I run the following battery cut-off points.  I found that 48.4V equates to about 25-30% SoC given my base load.  I've selected a 0.5V lower limit for when the gird is unavailable in which case I asume (never had tit happen yet!) that the BMS in the batteries will decide when to stop the party:

image.png.6e94019f7839d621a8ab69f8c3bd9a92.png

My base load at night drops to about 500W and in mid-winter (longer night) it runs the batteries down to about 40% SoC.  Here's a graph showing battery voltage vs. SoC over the past few days to give you an idea.  July 28 shows you how much the voltage can vary whilst charging/discharging during an overcast day (while SoC remains constant), and also how my 48.9V cut-off seems to be very tough to breach:

image.thumb.png.17d7f8df7f88117e1be2f9ca16720d9f.png

Hope this helps!

Thank you very much for your answers!

so, for a 10KW inverter i could discharge max 200A? Or, because i have 6 Pylons only 150A?

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Battery specs for the US2000:

image.png.24dec4bb2b7d8ed18d0fc54362c60208.png

So you can safely discharge six of them at 150A and not exceed their recommended limit.  Or go higher if your inverter, battery cabling and fuses allow.

"Off-grid 1" uses a relay to physically disconnect the grid completely and will only use a mix of pv & battery (no grid!) to supply the load.  When it's overcast & your batteries are flat you will lose electricity completely.

"Grid-tie with backup II" mode syncs the inverter to the grid and allows you to blend pv, batteries and grid to supply the load.  Using "PV - Battery - Grid" priority means that available solar will prioritise the load and additional current will be used to recharge the batteries.  When you disable feed to the grid & AC charger in this mode, you are effectively running off-grid but retaining the grid as a safety net.  Sort of like having your cake and eating it 😀

Edited by ChristoSnake
Added off-grid vs grid-tie info
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12 hours ago, ChristoSnake said:

Battery specs for the US2000:

image.png.24dec4bb2b7d8ed18d0fc54362c60208.png

So you can safely discharge six of them at 150A and not exceed their recommended limit.  Or go higher if your inverter, battery cabling and fuses allow.

"Off-grid 1" uses a relay to physically disconnect the grid completely and will only use a mix of pv & battery (no grid!) to supply the load.  When it's overcast & your batteries are flat you will lose electricity completely.

"Grid-tie with backup II" mode syncs the inverter to the grid and allows you to blend pv, batteries and grid to supply the load.  Using "PV - Battery - Grid" priority means that available solar will prioritise the load and additional current will be used to recharge the batteries.  When you disable feed to the grid & AC charger in this mode, you are effectively running off-grid but retaining the grid as a safety net.  Sort of like having your cake and eating it 😀

Thnx. for the quick answers, i’m happy with them.

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  • 3 weeks later...
On 2020/08/02 at 10:42 PM, John Bijker said:

Thank you very much for your answers!

so, for a 10KW inverter i could discharge max 200A? Or, because i have 6 Pylons only 150A?

 

On 2020/08/02 at 10:42 PM, John Bijker said:

Thank you very much for your answers!

so, for a 10KW inverter i could discharge max 200A? Or, because i have 

On 2020/08/02 at 12:13 PM, ChristoSnake said:

Hi John!  We have very similar systems and use them in the same way, so I will gladly share my settings with you.

I run my inverter in "Grid-tie with backup II" mode and use "PV - Battery - Grid" to supply load when PV is available.  I use 100A as max discharge in hybrid mode because that equates to 5kW (my inverter's upper limit) and I don't (usually) exceed that.  I don't export to grid and I don't use the AC charger either (I have enough solar capacity to cater for all but the worst weather, plus enough battery storage to survive an off-grid night without fully charged batteries as happened on July 28).

My bulk & float charging is set to the same voltage because the BMS system inside the Pylontechs manage their own bulk and float cycles any way.  I use Pylontech's lower voltage limit (52.5V) for charging.  I've brought my maximum charge current down somewhat (to 70A) because it allows the inverter to run a lot cooler, whilst still recharging my batteries by noon.

I run the following battery cut-off points.  I found that 48.4V equates to about 25-30% SoC given my base load.  I've selected a 0.5V lower limit for when the gird is unavailable in which case I asume (never had tit happen yet!) that the BMS in the batteries will decide when to stop the party:

image.png.6e94019f7839d621a8ab69f8c3bd9a92.png

My base load at night drops to about 500W and in mid-winter (longer night) it runs the batteries down to about 40% SoC.  Here's a graph showing battery voltage vs. SoC over the past few days to give you an idea.  July 28 shows you how much the voltage can vary whilst charging/discharging during an overcast day (while SoC remains constant), and also how my 48.9V cut-off seems to be very tough to breach:

image.thumb.png.17d7f8df7f88117e1be2f9ca16720d9f.png

Hope this helps!


 

 

Hi, i have changed all my settings to Tie-grid with back-up II. (Like you showed me)

I needed to change charging source to ‘PV only’  to force the inverter to discharge batteries, during the day, when the loads were higher then PV, otherwise Utility would have helped PV when loads were higher, instead of the batteries!

When i change to  ‘PV and Grid’ in charging source, utility will charge batteries and ‘help’ PV to power the loads! That’s not what i want...

Another question is: Are the dipswitches of the BMS-card OK for my system? (Infinisolar 3-phase 10KW with 6 pylontech US 2000 2,4KW)
 

Thanks innadvance

04287630-21E9-4B1F-AB9F-40DE2C5DE488.jpeg

F6CB452E-A41C-44D4-8CE2-7075BEC9D4BB.jpeg

3F95A0E5-911F-4FEC-B57E-C5175C8F8CA9.jpeg

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Your settings are now equivalent to what I have on mine.  This should be perfect for maximum electricity saving with the benefit of grid backup when required. 👌

If you find that the inverter switches back to grid too soon in the mornings, decrease both of the "voltage when grid is available" settings down by 0.1 V at a time and see if it makes the required difference.  I keep them 0.5V apart to compensate for the voltage fluctuations you get when removing the load from the batteries.  If the inverter keeps switching between batteries & grid in the morning, they are too close and the redischarging voltage can be increased by 0.1V at a time until this behaviour stops.

I do not have any experience with the BMS card - I use ICC via a 🍓🥧 for al my monitoring...

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  • 3 months later...

Hi again,

The infini 10KW works fine, after a couple of months. During sunny days when available solar charged allready my batteries, i would like to “feed-in to grid” my additional current. Here in Spain Iberdrola will pay €0,05/KWh. 
I just need to activate “Allow to feed-in to the grid” ? And i don’t need extra cards or meters?

What means the “Feeding grid power calibration R S T” ?

Many thanks in advance, John

ED96184B-1D3F-425F-BB93-78364E2F1566.jpeg

8A1C5160-268F-480F-83E7-DBF0772F63E4.jpeg

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  • 4 weeks later...
  • 7 months later...

Any changes I make in SolarPower 1.14SP1 or 1.15SP9 to my Infinisolar 10kw Hybrid inverter take a few attempts to save (after entering the administrator password), then are ignored by the inverter. Any ideas? Screenshots show settings and morning after, BlueNova 12kWh LiFePo4 battery is at 52.8V, not the configured 51V...

 

 

IMG_4215.jpeg

IMG_4217.jpeg

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  • 1 month later...

Hi guys, i installed an infinisolar 15kw. The the settings are Grid tie with backup II, and charges with PV only. The bad thing is, if connected to PV and Battery it works perfectly well. The same applies if its connected to grid and battery, but if i connect battery, pv and grid, it quickly goes to error 12. Went to a level of testing with new panels not installed and not earthed, it does the same. Anyone with an idea of what might be the error. 

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