Induction cooker - QuickField simulation example
An electric kitchen stove heats metal cookware via induced eddy currents generated by a high-frequency magnetic field.
How to find the heating power and efficiency of an induction cooker?
Answer Typical applications Problem Type
Geometry
Given
Task
Solution
Results
Dependence of Joule heat on supply frequency at constant electric current magnitude:
Engineering question
Set up an axisymmetric QuickField AC Magnetics problem to model the electromagnetic interaction between the induction coil and the pan.
induction stove, induction heating, wireless power transfer
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Simulation problem
Axisymmetric problem of AC magnetics.
Coil outer diameter = 190 mm;
Number of turns = 54, wire diameter = 3 mm;
Current value I = 14 A (r.m.s. value);
frequency range f = 20 kHz… 100 kHz;
Pan volume = 1100 ml;
Estimate Joule heat in the pan.
Flat spiral coils can be represented as concentric circles. Consequently, the problem can be solved as an axisymmetric 2D problem (the axis of rotation is the horizontal one).
Joule heat in the pan at a frequency of 40 kHz is 960 W.
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