ABSTRACT
This chapter aims to one of the applications – induction cookers. The working principles of induction heating are historically well known. The magnetic field may also be created by moving the inductor inside a magnetic field or an inductor inside a magnetic field. The heating is due to the resistive losses in the load. Induction heating is used in furnaces, welding machines and for applications that require heating up and melting purposes. Since the induced magnetic field is localised around the inductor, the heat developed is also localised to a small region. The rate of heating is proportional to the intensity of the current passing through the inductor, the specific heat of the material, the frequency of the induced current, the permeability of the material and the resistance of the material. Modern induction cookers operate around the 20 kHz to 100 kHz frequency range. The magnetic field normally surrounds the conductor.
