Ansoft Maxwell, "cannot apply Current Excitation to non planar entity" error

[sandeep777]

I have 3 phase 2D Model of Induction machine in Ansys maxwell. For phase-A (one of the three phase)I have 12 coils which I need to connect them in a particular pattern, how I will connect them since there is no option for connecting the coils for a particular winding? I am doing analysis in transient solver.

 

[hsnprvz]

Verify conduction path 'Path1': For any conduction path that has current excitation(s) specified, either exactly one internal current excitation or at least two external current excitations should be specified. Kindly share the solution. Thank you

 

[hsnprvz]

Here is the screenshot of error i am having. I know that reason for leakage is coil and excessive region for coil. What can i do to eliminate this current leak? Kindly help regarding this as i am stuck with this for a week. Thank you

 

[gerbi]

Here is the screenshot of error i am having. I know that reason for leakage is coil and excessive region for coil. What can i do to eliminate this current leak? Kindly help regarding this as i am stuck with this for a week. Thank you

You're right. The problem is caused by too large "region". Reduce it's size so your excitation would be on the face of "region".
In your case delete the "region", create a new one with option to "pad individual directions". Then input the parameters but remember that in X direction (-X and +X) it should be 0. In Y and Z input percentages you think will create the region big enough to cover all phenomena you'd like to simulate. Alternatively this can be done via components tree - just open the create region command there and input parameters as mentioned above.

 

[hsnprvz]

Region is being made according to cylinders i have made. And for coil this region is too big. For my project, i cannot make large coil so i have to stick with this. Is there any other alternative. I just did what you said. Thanks for reply

 

[gerbi]

You can modify the size of "region" the way I just mentioned. Adjust it's size. Does this fix your problem ?

 

[hsnprvz]

Nope, actually when I set region to 25 or 50 or 100.it is adjusted according to cylinders. 0 means attached to cylinders but still big for coil.

 

[gerbi]

Oh, so the cylinders are not your coil. Okay. So, where's the coil ? cant's see it.

 

[hsnprvz]

Coil is in front, it is helical one wounded on ferrite cylinderical core. 3 large cylinders are acting as transmission lines. And region is being made according to large cylinders

 

[gerbi]

So you need to adjust your geometry, there's no other way.

 

[hsnprvz]

Can I give you file? If you can consider once more?

 

[gerbi]

Nope. Try adding some wires to that coil which would act like a power supply.

 

[hsnprvz]

Okay thank you for your kind responses.

 

[Tarek]

ok now i have another problem,
Maxwell3DDesign1 (Magnetostatic)
[info] Parametric Analysis on ParametricSetup1 has been started. (1:08:33 jun 01, 2012)
[info] A variation (kut='0deg') has been requested on machine Local Machine (1:08:33 jun 01, 2012)
[error] Could not preserve critical nodes. (1:21:22 jun 01, 2012)
[info] A variation (kut='5deg') has been requested on machine Local Machine (1:21:22 jun 01, 2012)
[error] Could not preserve critical nodes. (1:35:03 jun 01, 2012)
[info] A variation (kut='10deg') has been requested on machine Local Machine (1:35:03 jun 01, 2012)
[error] Parametric Analysis failed - User aborted. (1:45:30 jun 01, 2012)
what does it mean critical nodes?

please, how did you solve this problem?