Title :
A simplified FEM based calculation model for 3-D induction heating problems using surface impedance formulations
Author :
Nerg, Janne ; Partanen, Jarmo
Author_Institution :
Dept. of Electr. Eng., Lappeenranta Univ. of Technol., Finland
fDate :
9/1/2001 12:00:00 AM
Abstract :
A simplified FEM based combined magneto-thermal calculation model for nonlinear 3-D induction heating problems is described. The model is based on the combination of linear and nonlinear surface impedances evaluated using transient magnetic field calculation. The power dissipated in surface impedances is calculated and transferred to the thermal model as heat fluxes. After the temperature distribution is calculated the surface impedances are updated to correspond to the present electromagnetic and thermal states of the work piece. The performance of the model was verified with comparison to the measurements
Keywords :
eddy currents; electric impedance; finite element analysis; induction heating; temperature distribution; 3D induction heating; eddy current; electromagnetic state; finite element method; heat flux; impedance boundary condition; linear surface impedance; magneto-thermal model; nonlinear surface impedance; power dissipation; temperature distribution; transient magnetic field; Boundary conditions; Cogeneration; Coils; Eddy currents; Frequency; Magnetic fields; Magnetic flux; Magnetic materials; Skin; Surface impedance;
Journal_Title :
Magnetics, IEEE Transactions on
