Stack Overflow
Stack Overflow

Questions tagged [solar]

67 questions
0
votes
0 answers

Errors when using SSW to downlaod GOES data

I installed the SSW from the official site, then I tried downloading GOES data by using SSW, with the OS of Windows 11. However, some errors were confronted. The following is what shown in the Command-Line Interface when I entered "goes" and…
Sung
  • 1
  • 1
0
votes
0 answers

How to Prevent PID Overshoot in a System with Variable Solar Power Input?

I am using a Proportional-Integral-Derivative (PID) controller to manage power flow in a system with fluctuating solar power input. The system is primarily based on the 'active_load_kw' variable, which represents the load on the battery bank. The…
Diegitoo113
  • 1
  • 2
0
votes
0 answers

Power generation on roof of a van

Should I run a small windmill on my roof of my van to charge my secondary battery (for camping off the grid) or would it be more effective to invest in solar panels for the roof of the van?? I have yet to try either option but both are about the…
Mat Jenkins
  • 1
0
votes
0 answers

Is there a quick (equation) way to calculate the solar zenith angle if the solar azimuth angle is known?

I'm reviewing solar geometry calculations regarding to shading problems and, in the basic case, one wants to know whether a point will be shaded by another point at certain distance, height, azimuth angle made by both points regardint the N-S line…
javert 8
  • 11
  • 1
0
votes
1 answer

Seeking clarity in the generator design when using the SolaR package in r

I am trying to determine the generation output of a solar generation facility using historical solar irradiance conditions. I am using the SolaR R package (specifically prodGCPV function) to help in this effort. The generator design consists of 10…
user10836645
  • 1
0
votes
1 answer

Error: "The model is structurally singular" Dymola Modelica Solar thermal coupled with hot water tank and floor heating

Here what I am doing is that using the weather data as input parameter, if the global radiation is higher than 100 W/m^2 open the valve. First solar heat will be released to the hot water tank, and then the heat will be given to the Boundry_pT via…
Orhun C.
  • 17
  • 4
0
votes
1 answer

Which solar geometry should be assumed by pvlib?

I try to calibrate my PV panel's efficiency by means of reference GHI, dHI values measured by our national weather service, which is 12 km away from my local PV site. At the reference site, I calibrate the Ineichen model by trimming its…
Milan Hronsky
  • 1
  • 1
0
votes
0 answers

Problems with PHP/CURL data retrieval from Growatt inverters via Web API

I have installed a very nice solar power plant with 600Wp feed-in capacity on my balcony, properly installed and registered, of course. The power plant produces more energy during the day than is required for the base load and in the evening less…
Daniel Stappenbeck
  • 9
  • 2
0
votes
1 answer

Python script running 'subprocess' using a lot of cpu on Rapsberry Pi Zero

I have a short python script that monitors the battery voltage of a solar folding project I'm running, and shuts off the Pi if the battery voltage drops below a certain threshold. The problem is that the script is using a constant 60-65% of the Pi…
mlek
  • 1
0
votes
1 answer

Why NSRDB API is not working with refering the Lat, Lon values inside the code?

I'm trying to fetch TMY Solar Resource Data from NSRDB Database using Pvlib_get_psm3() method. Using the below code. But getting error. The code that I AM Using: NREL_API_KEY = '{{API_KEY' lat1=st.number_input('Insert the…
pvrepy
  • 1
  • 1
0
votes
0 answers

Why are the constraints I set in my CVXPY solar power optimization problem violated?

I am struggling with a CVXPY optimization problem because the optimized result violates the constraints I set. The optimization problem deals with energy produced by solar panels throughout a full day, considering the energy limit set by the…
rebeccaholt
  • 11
  • 1
0
votes
0 answers

How to Import TMY Data from NASA SSE Solar Database by location coordinates in Python?

I'm trying import TMY weather data from NASA SSE (Free) Solar Database via API call in my python App. I tried to explore wit PVLIB but the example codes that I found are maainly reading data from local library folder. What I want to perform is that…
pvrepy
  • 1
  • 1
0
votes
0 answers

Sunpath at particular location in jupyter notebook

How can i find out sun position at a particular location with consideration of surroundings such as trees, nearby buildings etc., to calculate to irradiation coming to the PV module? How can i create a horizontal shading profile to find shading…
naveen kumar
  • 1
  • 2
0
votes
1 answer

How to fix on dspace 6.3 --> org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException

[org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException1
Getie wagaye
  • 1
  • 1
0
votes
0 answers

Pysolar: calculate irradiation: what time span it covers

I am supposed to calculate the irradiation of the sun at a certain geographic location and to be able to perform further calculations. For this I need the maximum value at clear sky. To determine this value i user pysolar. So far to work done. I can…
Fritz Gerlich
  • 1
1 2
3
4 5