On modelling weakly coupled electromagnetic-thermal problems with prescribed nonlinear surface heat transfer

Finite element modelling of coupled electromagnetic-thermal problems is described. The thermal sources can be eddy currents in conductors and winding I²R losses. Since the thermal time constants are relatively very long the coupled electromagnetic-thermal problem is solved as a weakly coupled system, using time-harmonic and time-transient thermal methods. Nonlinear surface convection and radiation terms are included in the thermal model. Results are compared with experimental measurements.