1. Power Magnet Devices: A Multi-Objective Design Approach
Chapter 5: Introduction to Electromagnet Design
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

2. 5.1 Common Electromagnet Architectures
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

3. 5.2 Analysis of an EI Core Electromagnet
Configuration
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

4. 5.2 Analysis of an EI Core Electromagnet
Electrical analysis
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

5. 5.2 Analysis of an EI Core Electromagnet
Magnetic analysis
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

6. 5.2 Analysis of an EI Core Electromagnet
In expressions for magnetizing reluctances
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

7. 5.2 Analysis of an EI Core Electromagnet
End airgap permeance
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

8. 5.2 Analysis of an EI Core Electromagnet
Center airgap permeance
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

9. 5.2 Analysis of an EI Core Electromagnet
Slot leakage
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

10. 5.2 Analysis of an EI Core Electromagnet
End slot leakage
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

11. 5.2 Analysis of an EI Core Electromagnet
We obtain
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

12. 5.2 Analysis of an EI Core Electromagnet
Derivation of new portion of Phsl
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

13. 5.2 Analysis of an EI Core Electromagnet
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

14. 5.2 Analysis of an EI Core Electromagnet
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

15. 5.2 Analysis of an EI Core Electromagnet
Front face leakage
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

16. 5.2 Analysis of an EI Core Electromagnet
Expression for force
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

17. 5.2 Analysis of an EI Core Electromagnet
We have
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

18. 5.2 Analysis of an EI Core Electromagnet
and have
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

19. 5.2 Analysis of an EI Core Electromagnet
Limits as the gap goes to zero
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

20. 5.2 Analysis of an EI Core Electromagnet
Example 5.2A. Let’s take a look at a EI core
Dimensions (in mm):
Winding
N=40, ac = 11 mm2
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

21. 5.2 Analysis of an EI Core Electromagnet
Predicted resistance: 24.7 mW
Measured resistance: 30.5 mW
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

22. 5.2 Analysis of an EI Core Electromagnet
Force versus current (predicted)
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

23. 5.2 Analysis of an EI Core Electromagnet
Force over power versus current (predicted)
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

24. 5.3 EI Core Electromagnet Design
Configuration
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

25. 5.3 EI Core Electromagnet Design
Design space
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

26. 5.3 EI Core Electromagnet Design
Widths
Conductors
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

27. 5.3 EI Core Electromagnet Design
Dimensions
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

28. 5.3 EI Core Electromagnet Design
Metrics
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

29. 5.3 EI Core Electromagnet Design
Constraints
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

30. 5.3 EI Core Electromagnet Design
More constraints
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

31. 5.3 EI Core Electromagnet Design
Pseudo-code for fitness function
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

32. 5.4 Case Study Specifications
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

33. 5.4 Case Study Design space
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

34. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

35. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

36. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

37. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

38. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

39. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

40. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

41. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach

42. 5.4 Case Study
S.D. Sudhoff, Power Magnetic Devices: A Multi-Objective Design Approach