Three-phase busbar losses - QuickField simulation example
Engineering question
How to find frequency and proximity effect in busbar losses?
Engineering answer
Set up a plane-parallel QuickField AC Magnetics problem for a three-phase busbar system and evaluate frequency and proximity effect losses from computed field results.
Typical applications
three-phase busbar systems, laminated busbars, power distribution busbars
Download
- Download simulation files (files may be viewed using any QuickField Edition).
Simulation problem
Problem TypePlane-parallel problem of AC Magnetics.
Geometry
Given
Material of busbar - aluminum;
AC current I = 1000 A (R.M.S. value);
Frequency f: 50 Hz, 400 Hz, 1 kHz, 3 kHz.
Task
Calculate the dependence of the busbar losses on the alternating current frequency.
Results
Current density distribution of a three-phase busbar (f = 50 Hz):
| Joule heat losses, W/m | |||
|---|---|---|---|
| Frequency, Hz | A | B | C |
| 0 | 24 | 24 | 24 |
| 50 | 25.3 | 25.0 | 25.0 |
| 400 | 37.6 | 50.7 | 37.3 |
| 1000 | 56 | 90 | 56 |
| 3000 | 98 | 155 | 98 |
Video
- Three-phase busbar losses. Watch on YouTube.