Ferrite Modeling & B-H Curve
- 1. ACME Electronics Corporation 1 Ferrite Modeling & B-H Curve In PSPICE Simulation By Ray Lai, FAE June 2015
- 2. ACME Electronics Corporation 2 Ferrite Modeling in PSPICE Spice is the analog electronic simulation tool widely used with robust standardized algorithm. PSpice is a GUI enhanced version of Spice. Magnetic device can be modeled in Pspice to simulation the real PSpice supports two models of magnetic core: 1. Jiles-Atherton model (level 2) Introduced here 2. Spice Plus model (level 3)
- 3. ACME Electronics Corporation 3 1. Ferrite Modeling in PSPICE Jiles-Atherton model (level 2) * It’s CGS unit adopted for magnetics in PSPICE.
- 4. ACME Electronics Corporation 4 1. Ferrite Modeling in PSPICE Jiles-Atherton model (level 2) Pspice Model Editor can create the Jiles-Atherton model parameters from keying the B-H values in the “Hysteresis Curve” field.
- 5. ACME Electronics Corporation 5 1. Ferrite Modeling in PSPICE -Jiles-Atherton model Creating new core model in Pspice Model Editor: Select new model
- 6. ACME Electronics Corporation 6 Default Screen: 1. Ferrite Modeling in PSPICE -Jiles-Atherton model Key in B-H in CGS
- 7. ACME Electronics Corporation 7 Starting from this point, the most out contour. P45 1 2 3 4 5 6 7 8 9 10 11 12 13 H 0.003 0.126 0.258 0.389 0.507 0.632 0.889 1.155 1.311 1.552 2.541 6.297 11.310 B 1381.2221713.6812303.0002650.2283165.2313995.8174176.2714399.8844538.1244626.9094713.6234836.2335097.846 14 15 16 17 18 19 20 21 22 23 24 25 H 14.861 11.330 6.698 2.578 1.562 1.286 0.874 0.635 0.514 0.381 0.245 0.167 B 4827.0644613.0794458.1534135.1603763.4933350.1612539.568 955.908 472.083 272.562 77.408 -15.318 1. Ferrite Modeling in PSPICE -Jiles-Atherton model
- 8. ACME Electronics Corporation 8 1. Ferrite Modeling in PSPICE -Jiles-Atherton model Select Tools Extract Parameters after keying in the B-H data
- 9. ACME Electronics Corporation 9 1. Ferrite Modeling in PSPICE -Jiles-Atherton model B-H curve scree will change to the corresponding data after parameter extracted
- 10. ACME Electronics Corporation 10 1. Ferrite Modeling in PSPICE -Jiles-Atherton model mi will affect the magnetic parameters in this model
- 11. ACME Electronics Corporation 11 1. Ferrite Modeling in PSPICE -Jiles-Atherton model NiZn Material needs higher X-axing setting to be able to model correctly
- 12. ACME Electronics Corporation 12 1. Ferrite Modeling in PSPICE -Jiles-Atherton model P45 ui=3100 P45 ui=2500 However, the B-H curve will not change much
- 13. ACME Electronics Corporation 13 1. Ferrite Modeling in PSPICE -Jiles-Atherton model H(K1)*1000/(4*pi) 0 20 40 60 80 100 120 140 160 180 200 B(K1)/10000 B(K2)/10000 0 200m 400m 500m P41 for mi=2400 (green) and 2000 (red)
- 14. ACME Electronics Corporation 14 1. Ferrite Modeling is PSPICE -Jiles-Atherton model P41 (green) and P45 (red) @100kHz
- 15. ACME Electronics Corporation 15 1. Ferrite Modeling in PSPICE -Jiles-Atherton model P45 B-H at 25℃ (green) and 100℃ (red)
- 16. ACME Electronics Corporation 16 1. Ferrite Modeling in PSPICE -Jiles-Atherton model Good accuracy of Jiles-Atherton model. Too bad there is no temperature coefficients
- 17. ACME Electronics Corporation 17 1. Ferrite Modeling in PSPICE -Jiles-Atherton model P4
- 18. ACME Electronics Corporation 18 1. Ferrite Modeling in PSPICE -Jiles-Atherton model P48
- 19. ACME Electronics Corporation 19 1. Ferrite Modeling in PSPICE -Jiles-Atherton model Gap behavior is well simulated by J-A model, too. GAP=0.5mm Gap=0.01mm Gap=0.05mm
- 20. ACME Electronics Corporation 20 1. Ferrite Modeling in PSPICE P45 by Spice Plus Model (level 3)
- 21. ACME Electronics Corporation 21 1. Ferrite Modeling in PSPICE Spice Plus Model for magnetic core is greatly simplified.
- 22. ACME Electronics Corporation 22 1. Ferrite Modeling in PSPICE Jiles-Atherton model (red) is a better approach than Spice Plus (green)
- 23. ACME Electronics Corporation 23 Open Discussions
- 24. ACME Electronics Corporation ACME Electronics Corporation Aggressively Committed to Manufacturing Excellence