On multi-frequency induction heating

A. Kapusta - A. Levy - B. Mikhailovich

Ben-Gurion University of the Negev, POB 653, Beer-Sheva 84105, Israel

Abstract
A method of multi-frequency induction heating using frequency-modulated electric current in a heater-solenoid is proposed. Electrodynamic and thermal problems are formulated and solved. Spectral characteristics of currents in a heated cylindrical body are evaluated, and temperature dependencies for sinusoidal and frequency-modulated currents are presented Figs 7, Refs 6.