Study on Heating Performance Improvement of Practical Induction Heating Rice Cooker With Magnetic Flux Concentrator

This paper presents a finite-element analysis (FEA) that features a model for electromagnetic-thermal coupling 3D-FEA. To confirm magnetic flux density and thermal distribution, we carry out 3D-FEA on an induction heating (IH) rice cooker with a magnetic flux concentrator (MFC). The analysis is conducted with respect to the bar-type MFC. The current waveform and temperature transition of the actual model is measured, and FEA modeling is based on the shape and current waveform of the model. The IH jar temperatures derived by the initial FEA model and the actual model are compared. The models show good agreement in terms of temperature transition. To improve efficiency and fast heating, the application of the MFC in the modeling is considered. To confirm the effect of the MFC, the initial and proposed models are compared using 3D-FEA results.