Experimental characterization of materials with controlled Curie temperature for domestic induction heating applications

The use of materials with controlled electromagnetic properties, such as Curie temperature, for the development of different domestic induction heating applications can improve their safety, energy efficiency and performance.In this article, a measurement system for the magnetic characterization of ferromagnetic materials is presented. The study focuses on materials with low Curie temperature, since typically the information provided by the manufacturers of this type of alloys is limited, giving only the Curie point. It has been obtained the value of its magnetic permeability for different conditions of temperature, excitation current and frequency. These data are useful to carry out simulations of different induction heating applications and design power converters for these systems.The results obtained confirm the manufacturer’s Curie point and also provide the magnetic permeability values and their dependencies for use in simulations or system design.