Learning Forum

[ah05085]

Hello all,

I'm trying to conduct simulation on a switched reluctance motor with a custom electrical steel. The specific part I'm having trouble with is the analysis that can be referenced in :43 of 212- Ansys Maxwell - Simulating Reluctance Motor/ Ansys Calculator [part 3] .

https://www.youtube.com/watch?v=c8_J5qg2BhQ&list=PL9r_HOARy0zhIuuamW0xQ3BgJ_F5FmijK&index=5&t=115s

I got an error saying mesh size exceeded for ansys electronic desktop student limit. My first trail was for a for length of 150mm which yielded 78730 elements. The element restrictions is 64k. I then reduced the core length to 65mm, this yielded 65492. Then I reduced it to 50mm, which yielded 77640. 

Why did the elements go up when I reduced the geometry.?

I reduced the core length to 20mm then I got an error saying adaptive passes did not converge based on specified criteria. 

Can you suggest another course of action to help conduct the simulation? I'm following this series very closely; 212- Ansys Maxwell - Simulating Reluctance Motor 

Thanks & Happy Holidays,

Austin

[Praneeth]

Please note that Ansys Maxwell uses adaptive meshing in the solving process.
This algorithm is quite a complex one and it is the best for most of the cases to do the analysis.
You can change the convergence criteria of your simulation based on your need.
The adaptive pass will refine the mesh for each iteration till the specific criteria is achieved or till the maximum number of passes is arrived (which ever occurs first).
So, the solver will throw a warning to intimate the user that the adaptive pass did not converge.
But is does not mean that the simulation is not successful. This only affects the accuracy of your result.
Please go through "Adaptive Setup for Non-Transient Solutions" section of the Maxwell help pdf document for more details.
All the very best.

[ah05085]

Thanks. Happy New Year!