Split busbars unbalance current - QuickField simulation example
Example is prepared by Ivan De Luca (I.E.C.I. Engineering srl.)
Current sharing and power losses in split three-phase busbars for ABCABC and CBAABC phase arrangements, showing the effect of conductor sequence.
How to calculate the effect of phase arrangement on current sharing and power losses in split busbars?
Answer Typical applications Geometry
CBAABC configuration:
ABCABC configuration:
Given
Task
Solution
Results
Current and power loss distribution in the CBAABC configuration.
Engineering question
Model the split busbars with parallel conductor connections and compare the current and power-loss distributions for different phase arrangements.
split furnace busbars, parallel conductor busbars, industrial busbar assemblies
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Simulation problem
Problem Type
Plane-parallel problem of AC magnetics.
Busbars length is 30 meters.
Electrical conductivity of aluminum is 33.5 MS/m
AC current is 1 kA (r.m.s.) per pair of busbars.
Frequency is 50 Hz.
Calculate current distribution in the busbars and power losses. Compare ABCABC and CBAABC configurations.
Parallel conductors are being assigned a single label and parallel connection is specified in the label properties.
We utilize the electric circuit to specify labels connection.
Current is distributed more uniformly in the CBAABC than in the ABCABC configuration.