Skip to content

Energy vs Circuit Inductance issue

image-20250119-093830.pngBnorm.mp4image-20250119-093731.pngimage-20250119-093744.png

Inductance calculation

Energy

The calculation is done in ParaView

W = B*H/2 = mu*B^2/2

We integrate that over the entire domain, then

L = 2W/I^2

Circuits

L = XL/(2 pi f) = Im[U/I]/(2 pi f)

ElmerFEM

We can get magnetic field energy from Elmer

Reason

Have to set relaxation factor!

WhatsApp attēls 2025-01-19 plkst. 12.59.06_e14c488e-20250119-110821.jpg

The problem is that B and H fields look ok. The problem is that H field is too large than it should be.