Error in cosimulation - ANSYS Maxwell and ANSYS simplorer

I have a simple pulse generator circuit (in ANSYS simplorer (twin builder)) connected to an external cable (in ANSYS Maxwell) as shown below. While the individual simulations give results, the co-simulation shows the errors below. Any help would be greatly appreciated!



  [error] An external simulator couldn't be setup for simulation.

  [error] Simulation completed with execution error on server: Local Machine.


 Maxwell2DDesign1 (Transient, about Z)

  [error] Excitation 'Winding1': Winding does not have any coil.

  [warning] Eddy effect settings may need revisiting due to the recent changes in the design. The default value will be used for the object if the value is not specified. 

  [error] Simulation completed with execution error on server: Local Machine.


  • icellb1icellb1 Forum Coordinator

    Hi, @arshiah ,

    I saw your Maxwell side has an error message "winding does not have any coil". Could you check if you add coil(s) to winding1 correctly on Maxwell side?

  • Dear@icellb1 Thanks for your comment!

    I realized that the external winding I assigned in Maxwell should have a coil. So, I made a pulse generator in simplorer and coupled it with a 3 phase machine in maxwell and the coupling between Simplorer and maxwell worked fine.

    But the coupling did not run for a simple cylindrical coaxial cable as shown above. So I wondering if it has to do with the winding geometry. Should I design the cable in helical shape? Or are there any other options to add coils to a cylindrical winding in Maxwell?

  • icellb1icellb1 Forum Coordinator

    Hi, @arshiah,

    From your screenshot, the cylindrical coaxial cable looks like an open loop coil, so two coil terminals at 2 ends of a coil need to be added to a winding.

  • Oh, that totally makes sense. That might be where I was going wrong! Thanks so much @icellb1 . I shall try that and write an update!

  • So if I understood correctly, I need to assign the same external winding name to both ends of the coil? @icellb1

  • icellb1icellb1 Forum Coordinator

    Hi, @arshiah ,

    You should only assign coil terminal excitation to the two end faces of the physical coil. Then add the two coil terminal excitations to one winding excitation. Change the excitation type of that one winding excitation to "external".

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