Steady state magnetic with steady state/transient thermal cosimulation

Steady state magnetic – Steady state thermal

The different internal steps implemented during the cosimulation of steady state AC magnetic or transient magnetic (in steady state) with the steady state thermal are :

Step Electromagnetic Thermal
0 The initial temperature is set by the user The initial source terms (losses) are null
1 Solving Steady state AC / Transient magnetic – steady state
2 Export of the losses RMS / average values
3 Import of losses
4 Verification of the convergence of the heat source field solution as to accuracy*
5 Solving Steady state thermal
6 Export of the temperature field
7 Import of the temperature field
8 Solving Steady state AC / Transient magnetic – steady state
9 Export of the losses RMS / average values
10 Import of losses
11 Verification of the convergence of the heat source field solution as to accuracy*
12

Stop the solving process, if convergence is attained

Else if Return to step 5 (after suppressing the results)

*The convergence is defined here in the thermal project (in the «cosimulation» box). The convergence verifying is done on the imported heat source field (with respect to the previous temperature field)

Steady state magnetic – Transient thermal

The different internal steps implemented during the cosimulation of steady state AC magnetic or transient magnetic – steady state with the transient thermal are :

Step Electromagnetic Thermal
0 The initial temperature is set by the user The initial source terms (losses) are null
1 Solving Steady state AC / Steady state transient magnetic
2 Export of the losses RMS / average values
3 Import of losses
4 Verification of the convergence of the heat source field solution as to accuracy: at the same step ti
5 Solving transient thermal at step ti
6 Export of the temperature field
7 Import of the temperature field
8 Solving Steady state AC / Steady state transient magnetic
9 Export of the losses RMS / average values
10 Import of losses
11 Verification of the convergence of the heat source field solution as to accuracy: at the same step ti
12

If the convergence is attained : Passage to the next thermal time step ti+1

Return to step 5 if not, to iterate on the same time step ti
13 End of the cosimulation having solved all the time steps of the thermal project

*The convergence has to be defined in the thermal project (in the cosimulation box). The verifying at a time step ti is done in relation with the last imported heat losses field. As long as the accuracy is not reached, a loopback is repeated on the same thermal time step. Once accuracy has been attained, the thermal computation passes to the next time step.