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

[Fuxue Jin]

Click the image to see the animate. Only part of objects are rotating.

 

[reni90]

ok i fixed that its rotatin now as its should but
the flux is maximum with 25 and 35 degrees :S
something bewtewn max and minimum at 0 degree, and higt at 9 degree :S
if i delete other phases, just let one phase and rotor then it shows flux as it should
maximum at 0 degree min at 90 and something like an sinus signal

 

[Fuxue Jin]

My suggestion is to set all rotor and stator material to solid, and see how the flux distributed, and then compare with when the material is set to laminated.

I still believe the stacking direction is the cause of flux distribution different from your expectation.

ok i fixed that its rotatin now as its should but
the flux is maximum with 25 and 35 degrees :S
something bewtewn max and minimum at 0 degree, and higt at 9 degree :S
if i delete other phases, just let one phase and rotor then it shows flux as it should
maximum at 0 degree min at 90 and something like an sinus signal

 

[reni90]

when i go to view/edit material i have this options
X- component unit vector (a number)
Y- component/... etc..
what is that for, some materials doesn't have it but some have and the value is set to 1 or zero.
I couldn't find what's that

 

[Fuxue Jin]

You don't need to change that, I believe. Just change the composition to solid.

when i go to view/edit material i have this options
X- component unit vector (a number)
Y- component/... etc..
what is that for, some materials doesn't have it but some have and the value is set to 1 or zero.
I couldn't find what's that

 

[reni90]

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?

 

[Fuxue Jin]

This is something I don't know. Sounds like you 3D model is the problem.

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?

 

[chaiturockz]

Hi all,
I want to learn tools like MAXWELL 2d 3d , MAGNET, FLUX etc. I want to know if I'll need to know CAD and FEM Analysis to learn the above mentioned tools.
Thankyou,
Chaitanya

 

[Fuxue Jin]

you don't need to know CAD or FEM to learn Maxwell, but you will need to learn how to draw 3D object in Maxwell. Knowledge on CAD or FEM will certainly help but not necessary to start to learn.

Hi all,
I want to learn tools like MAXWELL 2d 3d , MAGNET, FLUX etc. I want to know if I'll need to know CAD and FEM Analysis to learn the above mentioned tools.
Thankyou,
Chaitanya

 

[reni90]

u can also draw 3d objects in autocad or solidworks, i am drawing my in solidworks and importing that in maxwell

 

[reni90]

Ok people, i need again your help. So i am modeling this machine in solidworks and i save it as x_b extension so that maxwell can recognise it. My problem is that maxwell recognised the cooper parts as sheets :S
I don't know why, so i can't add material to them, and isolation :(
here are the parts please take a look
https://hotfile.com/dl/195668167/e6fa8e8/rev0.rar.html

 

[Fuxue Jin]

Try ACIS SAT (.sat) and import again

 

[reni90]

Project2 (C:/Users/nino/Documents/Ansoft/)
Maxwell3DDesign1 (Magnetostatic)
[error] Acis error: "Error in Importing C:/Users/nino/Desktop/maxwell/rev0/Assem1sa29navoja.SAT" (8:30:47 feb 23, 2013)
[error] Import Native Bodies: Translation of "C:/Users/nino/Desktop/maxwell/rev0/Assem1sa29navoja.SAT" failed. (8:30:47 feb 23, 2013)


Doesnt work :/

 

[reni90]

Ansoft Maxwell, cannot apply Current Excitation to non planar entity e

the problem was in the geometry, now i solved it.
Ok now i need advises, i want to creat one object rotating, and on stator cores measuring the voltage, how to do that, what simulation type to use?

 

[SirAskalot]

Create a sheet (2D) or solid volume (3D) covering the moving part and assign a moving band to that entity. (right click>assign ...>band) You need to use transient simulation type. As for the induced voltage, you need to crate a coil and assign it to a winding. Run the simulation with a proper time step, and remember V=d /dt, hence the need for proper time step. For a plot of the induced voltage go to Reports>Transient>select Winding ...>

 

[reni90]

this is the file https://hotfile.com/dl/196686924/0b2ee9c/Project1.mxwl.html
could you take atok at it and if it doesn't take to much of your time modife it so i can look how u done it and just let it simulate?

 

[reni90]

should i add the windings as current voltage or external, solid or strained

 

[reni90]

i get this message rev (C:/Users/nino/Desktop/maxwell/rev1/)
Maxwell3DDesign1 (Transient)
[error] Band mesh failure: 24 of band mesh nodes are shared by both moving and static objects. (5:40:00 mar 16, 2013)
[error] Simulation completed with execution error on server: Local Machine. (5:40:01 mar 16, 2013)

what do i need to do?

 

[SirAskalot]

Maybe try moving the edges of the band object further away from another edge of an object. That is, if this is a machine, the band should be in the middle of the air gap, with equal distance to stator and rotor yoke.

Else, try defining a finer mesh in the area of the outer edge of the band.

 

[reni90]

ok that's done now i have this message
rev (C:/Users/nino/Desktop/maxwell/rev1/)
Maxwell3DDesign1 (Transient)
[warning] Terminal surface mesh does not fit with conduction path in the following bodies {Part2_1,Part2}. Please verify them to ensure no bad effect on solutions! (7:30:11 mar 16, 2013)
[error] Moving part cannot directly touch stationary part. They should be separated by some thickness of the band region. (7:31:02 mar 16, 2013)
[error] Simulation completed with execution error on server: Local Machine. (7:31:02 mar 16, 2013)

the movien part are not touching stationary aprts :S

 

[SirAskalot]

In maxwell the moving part is the whole area enclosed by the band object. The error indicate that your band object also covers some other objects that are stationary.

Make one object covering the moving parts of the machine, the outer edges of this object should not touch anything else than vacuum/air. Then right click this object and assign it the parameter band. No other object in your model should be assigned the band parameter.

 

[reni90]

Ansoft Maxwell, cannot apply Current Excitation to non planar entity e

i have problems with my laptop while making these simulations, so i am thinking to buy a new pc
what specifications would you recommend me for maxwell 3d simulations

 

[gerbi]

i have problems with my laptop while making these simulations, so i am thinking to buy a new pc
what specifications would you recommend me for maxwell 3d simulations

As powerful as possible.
More RAM -> better (bigger mesh can be applied).
Faster CPU -> faster calcs (multicore is not so usefull since Maxwell will use single core of CPU, unless you use multi-core license).

For a PC.. 16-32GB / +3Ghz (2-4 cores) CPU would be good for not very demanding simulations.

 

[wubishet]

Maxwell: Terminal surface mesh does not fit with conduction path in th

Hi guys,
I run a simulation on Maxwell and got the following warning.
"
Terminal surface mesh does not fit with conduction path in the following bodies {Coil}. Please verify them to ensure no bad effect on solutions! "

I could not identify how to fix the problem. chenging mesh size didn't help me.

Thanks in advance for your help !

 

[gerbi]

Simplify this coil (no rounding). In addition, check if your "region" around model does not touch any element besides coil terminals (coil terminals must lay on "region" box plane).

 

[Pankit]

i get this message rev (C:/Users/nino/Desktop/maxwell/rev1/)
Maxwell3DDesign1 (Transient)
[error] Band mesh failure: 24 of band mesh nodes are shared by both moving and static objects. (5:40:00 mar 16, 2013)
[error] Simulation completed with execution error on server: Local Machine. (5:40:01 mar 16, 2013)

what do i need to do?

Maxwell3DDesign1 (Transient)
[error] Band mesh failure: 9 of band mesh nodes are shared by both moving and static objects. (12:38:16 PM Oct 16, 2014)
[error] Simulation completed with execution error on server: Local Machine. (12:38:16 PM Oct 16, 2014)
Please help me.

 

[gerbi]

Create a cylinder which will contain moving parts. Apply band to this cylinder.

 

[Yi Tao]

Excuse me I have the same problem as your first one. And I can't find "select geometry" option.All I can find are "Select Objects", "Select Faces", "Select Edges", "Select Vertices" and "Select Multi". Could you please tell me how to solve this proiblem more in detail?

 

[Fuxue Jin]

What solution type are you using? What do you try to solve?

 

[Yi Tao]

What solution type are you using? What do you try to solve?

I have a detector with a spherical geometry, and there is a little anode ball in the centre of the sphere (the anode is connected with a straight rod). I just want to excite a high volage on the anode ball. But I don't know hou to realize it. And then I want to study the electric field distribution.

 

[Fuxue Jin]

You need to use Electrostatic solution, then you can apply Voltage excitation on an object.

 

[Yi Tao]

You need to use Electrostatic solution, then you can apply Voltage excitation on an object.

Thank you very much!

 

[HamidMazaheri]

Hello
I have a problem as Reni had in the first page of this topic. I have modeled an asynchronous motor in Maxwell2D. When analyzing the model, I get these messages in Message Manager:

Maxwell2DDesign1 (Transient, XY)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: SpanExt is modified from 25 to 34.8382 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: One-conductor length: 158.601 (mm). (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: End leakage inductance per coil per turn (4 poles): 0.00020383 (mH). (4:09:55 PM Jan 10, 2016)
[warning] Currently no mesh operations or data link have been created for the setup(s): Setup1. The initial mesh will be used. The initial mesh is usually not fine enough to achieve an accurate solution. (4:09:58 PM Jan 10, 2016)
[error] Maxwell2d solver, process solver2d error: Internal Solver Error: 'Multiple solution domain detected!'. (4:09:58 PM Jan 10, 2016)
[error] Simulation completed with execution error on server: Local Machine. (4:09:58 PM Jan 10, 2016)

What are the origins of the two errors?
I am new with Maxwell, so I apologize asking odd questions.

 

[Fuxue Jin]

The last error is because the first error.

The first error, I am not sure but wonder if you have defined your solution region. In 2D simulation,the region is called balloon or something like that.

Hello
I have a problem as Reni had in the first page of this topic. I have modeled an asynchronous motor in Maxwell2D. When analyzing the model, I get these messages in Message Manager:

Maxwell2DDesign1 (Transient, XY)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: SpanExt is modified from 25 to 34.8382 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: One-conductor length: 158.601 (mm). (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: End leakage inductance per coil per turn (4 poles): 0.00020383 (mH). (4:09:55 PM Jan 10, 2016)
[warning] Currently no mesh operations or data link have been created for the setup(s): Setup1. The initial mesh will be used. The initial mesh is usually not fine enough to achieve an accurate solution. (4:09:58 PM Jan 10, 2016)
[error] Maxwell2d solver, process solver2d error: Internal Solver Error: 'Multiple solution domain detected!'. (4:09:58 PM Jan 10, 2016)
[error] Simulation completed with execution error on server: Local Machine. (4:09:58 PM Jan 10, 2016)

What are the origins of the two errors?
I am new with Maxwell, so I apologize asking odd questions.

 

[HamidMazaheri]

You mean that: I should select the edge of the Region and assign it as a Balloon Boundary?
Is it the only Boundary I should assign?

 

[Fuxue Jin]

I am not very familiar with 2D simulation. With modern computers, it is very easy to use 3D model with better result. 2D simulation isn't very useful.

You mean that: I should select the edge of the Region and assign it as a Balloon Boundary?
Is it the only Boundary I should assign?

 

[HamidMazaheri]

Thank you Fuxue Jin.
I think there is sth wrong with running Maxwell. My computer system has an Intel(R) Core(TM) i3 -4150 CPU @3.50GHz processor. When I run the Maxwell it uses only 25 percent of the processor. Is there any way to dedicate a more portion to Maxwell?

 

[Fuxue Jin]

You need additional license to use multiple processors. You can take a look at your settings in Maxwell see if you can use more processors.

Thank you Fuxue Jin.
I think there is sth wrong with running Maxwell. My computer system has an Intel(R) Core(TM) i3 -4150 CPU @3.50GHz processor. When I run the Maxwell it uses only 25 percent of the processor. Is there any way to dedicate a more portion to Maxwell?

 

[HamidMazaheri]

You need additional license to use multiple processors. You can take a look at your settings in Maxwell see if you can use more processors.

Do you know where I can find "Settings"?

 

[HamidMazaheri]

There is something else that seems to be strange and abnormal. I have assigned three series of winding for the Stator of the motor and every winding has some coils. When I change the material of one coil of a winding to vacuum, its current should decrease to zero because of infinite resistance. But nothing changes.
1. Are the assigned coils of a winding connected in series? If so, the current of a winding which contains a vacuum coil should be zero.
2. Or maybe the problem is due to wrong settings of the software.

 

[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.