Slot of electric machine
QuickField simulation example
In this tutorial we will analyze the skin effect occurring at the industrial frequency 50 Hz. The resistance of the conductor carrying 500 A sinusoidal current in the slot of the electric machine will be calculated.
Problem Type
Plane-parallel problem of AC magnetics.
Geometry
Given
Conductivity of copper σ = 58 MS/m;
Current I = 500 A, frequency f = 50 Hz.
Task
Calculate the current density distribution and the resistance.
Solution
Relative permeability of steel is much higher than that of air and copper. On stator surface Ht=0 boundary condition is specified.
Results
Resistance is 0.296 mOhm per 1 meter of the conductor length.
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