Problem with OMPython

[kmerbcn]

Hello

I am happy to come back after a hectic end of year with work. This week I had time to do my personal research project, doing a D-class amplifier using slidding control theory. First of all, I am doing the GAN MOSFET models from scratch.
I finally moved from version 2022 to 2026. It was a huge and nice change! I wanted to know whats wrong trying to instantiate and do a parametric analysis of my MOSFET model into Python using OMPython. It seems I have an error or warning while trying to inititalize the model. The code is as follows :

omc = OMCSessionZMQ()

mod = ModelicaSystem('C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGaNLibrary/ExperimentoEstatico.mo', 'ExperimentoEstatico', ['Modelica',
                     'C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGanLibrary/GanEstatico.mo',
                     'C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGanLibrary/FirstQuadrant.mo'])

The error/warning is as follows :

[OMC log for 'sendExpression(buildModel(ExperimentoEstatico, variableFilter=".*"), True)']: [translation:warning:498] There are nonlinear iteration variables with default zero start attribute found in NLSJac0. For more information set -d=initialization. In OMEdit Tools->Options->Simulation->Show additional information from the initialization process, in OMNotebook call setCommandLineOptions("-d=initialization").

What should I change into the ModelicaSystem statement? I tried to add command line options into it for initialization, but nothing pop up. When using the GUI and also the script edition, I do not find problems. If not Ill try to use the script version to do a parametric analysis.

Best regards and thanks!

Javier

[kmerbcn]

As soon as I do the other approach using the following code. The warning is the same, but the Python script manages to simulate

# omc = OMCSessionZMQ()

# cmds = ['loadModel(Modelica)',
#         'loadFile("C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGaNLibrary/GanEstatico.mo")',
#         'loadFile("C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGaNLibrary/ExperimentoEstatico.mo")',
#         'loadFile("C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGaNLibrary/FirstQuadrant.mo")',
#         'cd("C:/Users/jgarcia/Documents/Pruebas_modelica/EPCGanLibrary/tmp")',
#         'buildModel(ExperimentoEstatico)',
#         'simulate(ExperimentoEstatico, stopTime = 1)']

# for cmd in cmds:
#     print(cmd)
#     answer = omc.sendExpression(cmd)
#     print('\n{}:\n{}'.format(cmd, answer))

What is wrong in the previous code?

[casella]

@arun3688 can you please help?

[adeas31]

ModelicaSystem takes in command line options so try passing it -d=initialization.

[kmerbcn]

I tried already 2 days ago, but it does not work.

[kmerbcn]

ParametrizarEstatico.py
ThirdQuadrant.zip
Hello

I can send my files if someone see how to overcome this problem with initalization. Perhaps (99% sure), I am doing something wrong.

[arun3688]

@kmerbcn can you send the models as well, so that it is easy to debug

[kmerbcn]

Hello I Put the files in the previous thread as ThirdQuadrant.zip and ParametrizarEstatico.py.

Best regards!

[adeas31]

I just looked at the files you sent. You are using -d=Initialization instead of -d=initialization (its case sensitive).

I suggest using the master version. We have improved a lot and are working towards releasing v5.0.0 soon.

[kmerbcn]

Master version? What do you mean? Do you mean OMPython?

[kmerbcn]

Thanks very much for your help I am going to try now and give feedback to you.

[kmerbcn]

Still not working :(

Concerning , the version in Github I see you have version 4.0. I do not see version 5.0

[adeas31]

commandLineOptions is a list so you need to call it like commandLineOptions=["-d=initialization"].

Python will not raise a type error at runtime (type hints are not enforced).

[kmerbcn]

Sorry to disturb and now is solved. Thanks Arun!