1. Example #8 Influence of the interleaving on the winding losses
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2. Open PExprt application
This example will show how changing the interleaving of windings can affect the winding losses.

3. Select File/New for a new project
Select “Waveform Based” transformer component from the list of components and click on “OK” button

4. Select Ferroxcube library for design
Drag the Ferroxcube library from the “Stock Library” and drop it on the “Design Library” to assign it

5. Define the required converter parameters
Turns Ratio: 1:2
Switching Frequency: 150 kHz
Power: 100 W
Rest of parameters: default ones

6. Rest of parameters: default ones
Define the Design Inputs
Select “1D completely-full layers” winding strategy in order to generate 1D designs
Rest of parameters: default ones

7. Start the design process
Use “Calculations/Start Design Process” or click on the button at the toolbar

8. Allow PExprt selecting the core, wires and core materials
Click on “Yes” button

9. Save the project after the design process
Designing the component…
Save the project after the design process

10. Remove all the designs of the list except the fourth one
You have to delete all the designs in the list of results except the fourth one (the one highlighted in the list below)

11. Remove all the designs of the list except the fourth one
Deleting designs
1. Select the design clicking on it
2. Right mouse button click (or use “delete” key in the keyboard)
3. Select “Delete” in the pup-up menu

12. After deleting the designs, only the last one should be in the list
Only one design left in the list of results
After deleting the designs, only the last one should be in the list

13. Creating copies of the design
Create two copies of the design
Creating copies of the design
1. Select the design clicking on it
2. Right mouse button click
3. Select “Create a Copy” in the pup-up menu
Repeat steps 2 and 3 to create a second copy
Save the component

14. Select the first design in the list
Selecting the design to be modified
Select the first design in the list

15. Select “Open PExprt Modeler [PEmag]”
Modifying the winding strategy of the designs
Use “Modeler/Generate Model” menu or click on the button at the toolbar
Select “Open PExprt Modeler [PEmag]”
Click on “OK”

16. Modifying the winding strategy of the designs
PExprt Modeler Widow

17. Modifying the winding strategy of the designs
Select “Connections/Remove” menu item
Remove all the connections clicking on the connection ends

18. Modifying the winding strategy of the designs
Select “Connections/Add” menu item
Create primary winding (winding A) using the layer at the middle
Create secondary winding (winding B) using the other layers

19. Generating the Analytical based model (based on transmission lines)
Select “Modeler/Analytical Modeler (1D)/Start 1D model generation”
or use the tool bar button

20. Click on “Model + Values”
Generating Analytical based models of the designs
Click on “Model + Values”

21. Exit the PExprt Modeler application
Modifying the winding strategy of the designs
Save the component
Do not delete the model
Exit the PExprt Modeler application

22. Select the second design in the list
Generating FEA based models of the designs
Select the second design in the list

23. Generating FEA based models of the designs
Use “Modeler/Generate Model” menu or click on the button at the toolbar
Select “Analytical Model” in order to generate the transmission line base model
Click on “OK”

24. Select “NO” in order to use the 1D models previously generated
Recalculating winding losses with the previously generated models
Use “Calculations/Recalculate Winding Losses” menu or click on the button at the toolbar
Select “NO” in order to use the 1D models previously generated

25. Explore results
This design was the original one. The coupling between the windings is not considered
Winding losses have been recalculated using the models
The icon is modified in order to notify that the winding losses of these designs have been recalculated with the 1D (transmission line based) model.
The coupling between the windings is considered

26. Explore results Each design can be explored in detail
For example, select the second design

27. Explore the performance results
Explore results
Explore the performance results

28. Explore the constructive results
Explore results
Explore the constructive results

29. Explore results: Comparing results