- please see the comment from Pat, it does make sense to keep the whole model in simscape. There are also fan examples and blocks you can look at (the fan blocks probably require additional licenses besides Simscape Electrical)
- When debugging your model, you want to start small, so just running the motor on a constant physical load. I would replace the fan with a simple inertia (which you already have) and a damper block. See if you can run the motor to a steady state load that makes sense with this simple load to make sure everything on the electrical side is working as you expect. If it is, then you know there is a bug in your fan model.
Model Induction Motor with Fan
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I'm looking to model an induction motor with an axial fan attached to its rotor side via a gearbox. At the moment I have the power source, motor and a fan model connected. For the gearbox I simply multiply the electrical torque with the GR to give to the fan model.
Below is how the model looks in Simulink at the moment. In the inertia block attached to the motor "R"-port, I have accounted for the motor, gearbox & fan inertias.
I'm not getting the correct steady-state load on the rotor side. Below is what I have so far.
On the left in the figure above, the speed and load is supposed to remain constat after 5 s.
If anyone has any experience in modelling a similar system or could help me identify why it is doing this it would be greatly appreciated.
Joel Van Sickel on 29 Nov 2021