I want to connect the Twin activate with the psim for simulation.

Hello, I have a circuit diagram of simple buck converter in PSIM v.2025 extention .psimsch into the Twin activate 2025.1. I take the inductor current at the input side and use the "in Link node" and at the output terminal of inductor i used the "out link node" and also used the "out link node" at the output voltage. i want to chek the impact of inducor current inside the circuit.

I already make a same circuit and run it for a 1 sec and save the data points of "inductor_in" at the input side pf inductor and "inductor_ou" at the output side of the inductor and the points.

for information:

buck.psimsch: used for collect the time depended signal

buck2.psimsch: used for comsimulation with Twin activate

csv file in which i save the time depended signal

buck2.psimsch

buck.psimsch

buck_Vout_I1_I2.csv

buck_altair_twin_activate2.scm

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RSGarciarivas

hi @FarhanAhmad,

Do you have specific questions or are you having issues running these models?

FarhanAhmad

when i run this circuit in the Altair Twin activate : it did not run and showing error "Mocustom block" .At this stage i am learning the software of Altair Twin activate and step by step it can be a specific questions; to extending this knowledge this work will be merged into a Digital Twin and/or its support for power electronics circuits.

RSGarciarivas

hi @FarhanAhmad,

I had a look at your models and noticed several issues:

You had accidentally imported a full palette into the diagram, i.e., all the blocks available in a subfolder. This was causing the Mocustom block error (a Modelica Custom Block had missing information). I've removed the palette from the diagram.
In the FromCSV block, you were incorrectly declaring variable names. Whenever dealing with strings, you should use ' around the value. I.e., 'Time' and 'I1'. I fixed those definitions.
Your PSIM nodes are incorrectly set up. The output of current sensor ISEN1 is connected to a co-simulation link input. If you want to define the input current from Twin Activate, you need to use a controlled current source in PSIM and connect the input link there.

I strongly suggest going over the introductory trainings for both PSIM and Twin Activate:

Getting Started with Twin Activate - Getting Started with Twin Activate | Altair Engineering

Getting Started with PSIM

Hope this helps!

Rafael

buck-altair-twin-activate2_corrected.scm