Analytical Calculation of Permanent-Magnets Induction Heaters based on Magnetic Field Data

Analytical methods for calculating the performances of induction heaters with permanent magnets are computationally fast and very flexible, but require a mathematical model of the magnets and their geometry, which can be difficult for complex configurations. In this paper it is described an analytical method that is based only on the static field produced by the magnets, which can be calculated with simple numerical software and does not require such an analytical modeling. This method can also be applied to heaters already built and even of unknown internal structure, since it requires only the measurement of the magnetic field.