Model Technical Details

2 posts / 0 new
Last post
davyboy
Roof shade model shows two roof slopes

What do I do with the second roof slope? This is a home PV model. I have multiple slopes because it is a hip and valley roof, but it looks like I can only model one roof surface at a time.

2 posts / 0 new
Last post
Reza66
Electric load consumption

Hi Dear,

I received my Annual electric load consumption for the hospital and the file is on Excel format in 15 min interval,

but the problem is that when I import the file, monthly load summery (peak) shows the same number for all months and view load data shows a straight line during all months instead of curve line.

I appreciate if you guide me to fix the problems.

2 posts / 0 new
Last post
davyboy
How to model rows on roof slope with tree next to roof

I have a PV model w/ 11 panels. They are laid on a sloping roof with a tree off to one side. The higher up the roof slope, the less shade. The panels and single inverter are already specified, so how to I model the Syetem Design page to reflect reality. The panels are laid 6 panels bottom row, 4 panels second row and 1 panel 3rd row. I tried to set up more than one subarray, but parameters are grayed out. Also, the modules per string that I set for the Always Enabled subarray won't let me change it for the second subarray.

3 posts / 0 new
Last post
burakomersaracoglu
burakomersaracoglu's picture
List Of Solar Performance Models Equations

Dear SAM Developers and Users;

I am looking for a list of latest equations for SAM solar performance models (Detailed Photovoltaic Model, PVWatts, Empirical Trough, Physical Trough Model, etc.).

Are there any lists of latest equations (only equations and their respective titles)?

Have a nice day

Best Regards

2 posts / 0 new
Last post
adam_gaglione
Modeling of an Off-Grid, DC only system with SSC SDKTool

I'm hoping to model an off-grid, dc-only system using a combination of SSC SDK and Excel. It looks like I can use wfreader, irradproc, and pv6parmod to get hourly dc output, then I can use Excel to derive the battery SOC for each hour. FYI, I am also using the CEC Modules.csv file that I dug out of the SAM folders, which gives me the pv module coefficients that are needed for pv6parmod. I not able to find much documentation for pv6parmod. Assuming this is the right approach, which model does pv6parmod use for dc output?

3 posts / 0 new
Last post
caseyzak24
Sub-hourly modeling and 'hourly' DC loss adjustments

According to the SAM help docs:
"The SAM CSV format supports hourly and sub-hourly data with up to a one-minute resolution. SAM recognizes the weather file's time resolution based on the number of data rows in the weather file. For example, SAM recognizes a file with 8,670 data rows as an hourly data file, and a file with 35,040 rows as 15-minute data."

2 posts / 0 new
Last post
Allan54
High Pressure Water Properties into SAM

I'm running the Process Heat Parabolic Trough simulation. I get a warning when entering water outlet temperatures above 300C which they can be if a very high pressure system is being simulated. Pressure can be up to 11MPa. Is the warning real? Is there a database I can input for higher pressures and temperatures. Any help is appreciated. Thanks (newbie to SAM)

7 posts / 0 new
Last post
caseyzak24
Running irradproc submodule with PySSC

I am attempting to use the irradproc module and the PySSC wrapper to calculate sun zenith angle. Here is my Python code:

2 posts / 0 new
Last post
caseyzak24
Running irradproc submodule with PySSC

I am attempting to use the irradproc module and the PySSC wrapper to calculate sun zenith angle. Here is my Python code:

2 posts / 0 new
Last post
lanvin7c
Diesel Generator

Is it possible to model diesel generators along with Solar PV and batteries while designing a hybrid solar system?

Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer