Slot of electric machine - QuickField simulation example
Current-density distribution and AC resistance of a conductor embedded in an electric-machine slot, showing skin effect at industrial power frequency.
How to find skin effect in electric machine slot conductor?
Answer Typical applications Geometry
Given
Task
Solution
Results
Engineering question
Solve the AC-magnetic current distribution in the slot conductor, integrate the Joule losses, and calculate AC resistance from P/I^2.
motor slot conductors, stator slot windings, embedded conductors
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Simulation problem
Problem Type
Plane-parallel problem of AC magnetics.
Conductivity of copper σ = 58 MS/m;
Current I = 500 A, frequency f = 50 Hz.
Calculate the current density distribution and the resistance.
Relative permeability of steel is much higher than that of air and copper. On stator surface Ht=0 boundary condition is specified.
Resistance is 0.296 mOhm per 1 meter of the conductor length.
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