SAM 2018.11.11 - Storage model bug?

  • Gabriel Susca-Lopata
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24 Sep 2019 21:36 #7674 by Gabriel Susca-Lopata
SAM 2018.11.11 - Storage model bug? was created by Gabriel Susca-Lopata
I am currently modeling a solar and AC-coupled storage system in SAM 2018.11.11. When I use the battery-inverter conversion efficiency of 98% proposed for my project, the simulation shows more total AC energy generated vs simulating with only the solar component; and in the summary graphs shows a "negative" 4% "AC connected battery loss". I noticed that to get a net positive "AC connected battery loss", I have to enter battery-inverter conversion efficiencies around ~80%. Could there be a bug in the storage model with the current version of SAM that I'm using? 

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  • Paul Gilman
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25 Sep 2019 18:03 #7679 by Paul Gilman
Replied by Paul Gilman on topic SAM 2018.11.11 - Storage model bug?
Hi Gabriel,

Did you change any other battery model parameters from their default values? The total AC output of a PV system should be more than the output of the same system connected to a battery because of electrical losses from the battery.

Would you mind sharing your .sam file so I can investigate?

Best regards,
Paul.

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  • Rob Frohne
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29 Jan 2020 07:00 #7916 by Rob Frohne
Replied by Rob Frohne on topic SAM 2018.11.11 - Storage model bug?
Hi Paul,
Was this resolved?
Thanks,
Rob

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