Incorrect SoC for Lead Acid: Custom PV-battery

  • BatterySimulator
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27 Apr 2020 07:22 #8146 by BatterySimulator
Incorrect SoC for Lead Acid: Custom PV-battery was created by BatterySimulator
Hello everyone!

Im trying to simulate a saltwater battery as a Lead Acid: Custom PV-battery but have run into some problems. 

When discharging or charging a large amout of kWh only a tiny fraction of the SoC is discharged/charged as you can see in this table:   i.imgur.com/y1tT4LB.png  

I was wondering what the problem would be? Why is the battery acting like this?

Im using this weather data and have attached the project file.
climate.onebuilding.org/WMO_Region_6_Europe/SWE_Sweden/UP_Uppsala/SWE_UP_Uppsala.University.024620_TMYx.2004-2018.zip

File Attachment:

File Name: SaltwaterS...4-27.sam
File Size:175 KB


I would be very grateful for even the smallest bit of help!

Thank you in advance.

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  • pgilman
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27 Apr 2020 15:24 #8150 by pgilman
Hi Benjamin,
.
You specified a custom voltage curve with a maximum cell voltage of 40 V but left the cell nominal voltage at its default 1.5 VDC. Changing the cell nominal voltage to 48 V will result in a more reasonably sized battery bank so that the battery charges and discharges at the rates you expect.



Best regards,
Paul.

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