Slot embedded conductor skin effect - QuickField simulation example
In the lab the current density is obtained by potential measuring in the conductor cross-section by voltmeter. Phase is determined by the digital phasemeter.
How to find skin effect in slot embedded conductor?
Answer Typical applications Geometry
Given
Task
Solution
Results
Engineering question
Set up a plane-parallel QuickField AC Magnetics problem for a slot embedded conductor and evaluate skin effect from computed field results.
electric machine slot conductors, armature bars, embedded conductors
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Simulation problem
Problem Type
Plane-parallel problem of AC magnetics.
Relative permeability of steel μ=100
Relative permeability of air, copper μ= 1
Conductivity of copper σ=57 MS/m .
The steel is laminated, so its conductivity along the bar is zero.
Frequency f = 50 Hz.
The total current per slot is 300 A (peak value)
Draw a plot of current distribution within the conductor placed in the slot of electric motor.
Each slot is symmetrical about the vertical axis. One half of each slot is included in the model. Although these parts are in the same geometry model file, they do not affect each other, bacause parts are separated.
Vertical distribution of current density (RMS value) along the copper bar (y=0 at the bottom of the slot).
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