Design of induction coil of a coreless induction furnace to melt aluminum

This paper proposes the design of a coreless induction furnace to melt Aluminum, which is represented by a transformer with N primary turns and one short circuited secondary turn. The mechanical parameters of the furnace along with the thermal parameters of the charge material, determined by the desired furnace capacity, provide the required melting power. Design considerations and computations of its mechanical and electrical parameters are carried out for the anticipated melting power. The temperature dependency of the inductance coil is investigated to propose the essentials of its power control for better efficiency. Furthermore, a computer program is developed to obtain the optimal coil design besides computing the other parameters by taking the geometric limitations into account.