Learning Forum

[ranjanpal999]

Hi,

I referred to an example of PMSM motor available in *ExamplesTwin BuilderComponentsInterfacesMaxwellTR-TR2D

[HDLI]

Hello Ranjapen999 I am just wondering why you want to set the sinusoidal function for this inductance and it is end winding inductance of the electrical machine. This inductance should be constant value.
If you want to set the sinusoidal value, we just enter a sine function or use parameter.

HDLI

[ranjanpal999]

Hello HDLI Thanks a lot for your feedback. I shall apply the same.
The reason to set the sinusoidal function for inductance is to create an environment for changing load torque.
In one of my earlier posts, you had clarified that mechanical transient process could not be performed on PMSM motors. (/forum/discussion/27747/load-torque-vs-transient-torque-for-pmsm-motor-coupled-with-vfd#latest)
Now, please consider following 2 points:
Inductance tend to change with change in current (https://www.researchgate.net/post/Does_the_inductance_changes_with_current_change_in_a_magnetic_circuit_containing_inductor_coil_resistance)
And, change in current is also an indication for change in load torque.
So, combining points 1 and 2, it can be said that, if inductance is a assumed as a sinusoidal function then, current will also tend to vary, which means load is varying.
Please let me know your views on this.

[denny9696]

hi
how do analyze the motor model
use maxwell circuit

i can't get rotation model

[Meroz]