Elmer Discussion Forum

Hey Lauri, thanks for your great repsonse! I simplified my example to match the test case https://github.com/ElmerCSC/elmer-elmag/tree/main/CircuitBuilder/2D/circuit_examples/current_source . I also edit your points into the example, but after quite a while of tests i'm sure that it's not because of...

Hello everyone, maybe someone can check my sif file. I've been trying to convert my simulations with the circuit solver for a long time now, but I keep getting error messages and I'm a bit lost now. The circuit file is created with CircuitBuilder. Mesh with gmsh. The same case without the circuit de...

Hi Frederic, you can save this informations with "SaveData" "SaveScalars" Solver. The Keywords are "CPU Time", "CPU Memory" and "Dofs". Solver n Exec Solver = After Saving Procedure = "SaveData" "SaveScalars Filename = "results.da...

I don't know if I really understand your last paragraph. You say that it would be enough to sweep only iq and set id to 0 to calculate the flux including the saturation. In my opinion this is a special case of what I described above where I would need to sweep id, iq and position. Your approach wou...

Hi Mladen, I think the calculation of the machine parameter can be quiet hard. There are simply too many possibilities in modelling, especially for the control engineers. What your goal? The frozen permeability method is to seperate the field excitation by stator and magnets. The sum of both fields ...

Hi Mladen,

thanks for sharing your files. circuit.definitions is missing.


Best regards
Fabian

Just a short note for your mesh: For the transient calculation you need to split Body 10 into two parts. One like Body 9, just the half of the airgap. The second have to be the air of the slot opening.Further you need 2 curves between Body 9 and new Body 10 (mid of the airgap). Both curves lie direc...

Meanwhile I'm confused how to set up equations for the matrix to calculate the coil values via CircuitsAndDynamics. Afters some tests by hand and the CircuitBuilder, I still have a deviation of the matrix B and open questions. Simple Example: https://github.com/ElmerCSC/elmer-elmag/tree/main/Circuit...

As Kevin wrote, you need two surfaces that are coupled by a boundary condition. For a 2D model for example, gmsh says Physical Line for that. Both Lines are coupled by the MortarBC. You can add Target Boundaries, if necessary. Boundary Condition 1 Name = Sliding_Rotor End Boundary Condition 2 Name =...

Hi,

it looks like your boundary is not correct at your transient calculation. The flux lines close within your rotor section with much higher saturation.

The order in your sif-file is hard to read^^ check your sliding boundary. Its not clear what your 2nd boundary no. 14 is.


Best regards
Fabian