# PMSM inter winding fault modeling
**URL:** https://forum.plexim.com/t/pmsm-inter-winding-fault-modeling/2925
**Category:** General
**Created:** [March 18, 2026, 8:59am UTC](https://forum.plexim.com/t/pmsm-inter-winding-fault-modeling/2925 "2026-03-18T08:59:05Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Bijen\_Mali](https://forum.plexim.com/u/Bijen_Mali)
#### Post date: [March 18, 2026, 8:59am UTC](https://forum.plexim.com/t/pmsm-inter-winding-fault-modeling/2925/1 "2026-03-18T08:59:05Z")
I am looking at the possibility of simulating PMSM inter winding faults where I can control the degree/ severity of the fault. Are there any materials related to this?
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### Author:  [@Munadir\_Ahmed](https://forum.plexim.com/u/Munadir_Ahmed)
#### Post date: [April 6, 2026, 11:36am UTC](https://forum.plexim.com/t/pmsm-inter-winding-fault-modeling/2925/2 "2026-04-06T11:36:55Z")
Hi Bijen\_Mali,
There is currently no demo model or application note available that simulates this type of fault case, so you would need to implement such a model yourself.
One helpful feature of the machine models in PLECS is that they are open for inspection. While library components cannot be modified directly, you can break the library link by right-clicking on the component and selecting **Link \> Break Library Link**. This allows you to modify the component and add the level of detail required for your fault simulation.
For fault simulations, you will likely need to use the VBR implementation. I recommend reviewing the following forum post for a brief overview of machine models in PLECS:
> [@Electric Machine FAQ](https://forum.plexim.com/t/electric-machine-faq/2698):
>
> DQ Transformation Multiple conventions exist for the DQ (direct-quadrature) transformation, differing in frame alignment and axis ordering. The choice of convention affects the resulting equations and signs in the model. The convention used in PLECS is shown in Fig. 1 highlighting: The rotor’s electrical angle \theta\_e is measured from the phase A flux to the rotor’s angular position. The D-axis is aligned with the stator’s phase A winding flux linkage when the rotor’s electrical angle \theta…
For a more in-depth understanding of the VBR model, a literature review is recommended. A good starting point is the set of references on which the PLECS models are based:
> **[References - Synchronous Machine (Salient Pole) — PLECS 5.0 Documentation](https://docs.plexim.com/plecs/latest/components-by-category/sm_salientpole/#references)**
>
> Salient pole synchronous machine with main-flux saturation
Hope this helps, and best of luck. I would be very interested to see your model once it is ready, and I’m sure it would be valuable to the broader community as well.