Bug Report

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TosinB
I am getting an error message when I try to simulate on SAM

I am getting this error message when I try to Simulate. Please do you know how I can fix this.

fail(subarray1_mismatch_loss, min=0): -1.1
Simulation pvsamv1 failed.
SSC requires input ‘gen’, but was not found in the SAM UI or from previous simulations
Simulation levpartflip failed.

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2 posts / 0 new
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Paul Gilman
Support Forum Not Working

The SAM support forum is not working. We are working to fix it. In the meantime, please email us your questions or comments about SAM.

Sorry for the inconvenience.

Best regards,
Paul.

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3 posts / 0 new
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Paul Gilman
Support Forum is Down

We are fixing some problems with the support forum and have temporarily disabled new posts until we resolve them. In the meantime please email us with your questions or comments about SAM. We apologize for the inconvenience.

Paul.

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5 posts / 0 new
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klucas@energy.s...
Battery discharging beyond energy need

I am experimenting to see what size battery would be needed to move off grid for a sample load. PV system set approximately equal to 100% of annual load. Battery set to a very high energy and power level (250 kWh / 50 kW), and can charge and discharge in any hour from PV. Behavior as expected through spring months (battery slowly charges from excess energy), but on a relatively high use day in spring, the battery basically drains 200 kWh of stored energy in 5 hours against a load of maybe 25 kWh in that same time.

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1 post / 0 new
stef
Error when I run python file generated with SAM.

Hello,
I generate with SAM (Python 3) an .py file, but when I run this file (ide spyder), I have an syntax error.

.....File "/Users/srmac/Dropbox/Kepler/Projets/Affaire Moulin/-100kMoulin_80%dette_.py", line 44
ssc.data_set_matrix( data, b'subarray1_shading:mxh', subarray1_shading:mxh );
^
SyntaxError: invalid syntax....

Do you have any ideas ?
regards
stef

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2 posts / 0 new
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Erik_H
SAM Crashes Using Downloaded .srw Files

Hello,

I am in a renewable energy systems course at the University of Wisconsin and many, possibly all, of my classmates and I are having this same issue. Our assignment asked us to download 2012 NREL WIND toolkit data for a specific zip code (53597) and the data successfully saves to the computer. The file directory looks good and everything. However, once you hit "Simulate," SAM immediately crashes. This is an issue affecting both Macs and PCs.

I have attached my .sam file in case it helps troubleshoot this issue. Thanks for your help!

Best,

Erik

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klucas@energy.s...
Errors in excess credit calculation with net billing affecting Project NPV

Hi,

I just downloaded the updated patch. However, there is still an error in the calculation for the excess credit in September, which in turn causes the sum of the first year monthly values to not match the annual first year values.

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2 posts / 0 new
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Luca S
Dispatch Control not working on physical trough at night times

Dear Sam team,

I am modeling a physical trough system with a thermal storage, that should be filled on daytime and discharged at nighttime (7pm until 11pm). In the Daytime no power production is needed an the power cycle should stand still.

To achieve this, I tried to use the dispatch control for the TES as shown in the attached screenshot.
Turb. out. fraction = 1; Storage dispatch w/ & w/o solar = 0 for the times from 7pm until 11pm.
At these times there is no irradiation and the "field thermal power absorbed" is zero.

3 posts / 0 new
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klucas@energy.s...
Demand costs not included in Electricity bill when there is excess credit

Hi,

I am modeling a 4 part rate with a NCP and TOU demand charge, as well as TOU energy charges. I noticed when running the macro "Value of RE" that the Total Bill is not the sum of the individual components (i.e. fixed, energy, demand). This impacts both the Year 1 and PV of Annual Costs, as the savings compared to no system calculation is based on the incorrect total bill, which in turn affects the NPV of annual costs.

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5 posts / 0 new
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LeeMerrill
SAM Broken with Windows 10 1709 Fall Creators Update

SAM does not work correctly with Windows 10 1709 update released last week.

Menu systems do not allow for saving, renaming, changing models, adding battery storage, etc. all menus I tested seem broken with the new version of Win 10. The keyboard shortcuts do work, so it appears to be a UI bug.

I have a small screen capture (mp4 format) if the dev team needs examples.

Thanks.

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