Phase‐modulated currents in induction heating
ISSN: 0332-1649
Article publication date: 13 September 2011
Abstract
Purpose
The purpose of this paper is to determine technological potential of using multi‐frequency electromagnetic fields for the optimization of induction heating process.
Design/methodology/approach
The aim of the research is achieved by using phase‐modulated current feeding the solenoid that excites the magnetic field. In this case, the magnetic field, side by side with the carrier frequency, contains frequency spectrum arising due to modulation. At that, spectral components possess different penetration depths, which ensures a more uniform current density distribution over the cross‐section of the heated object. The results are obtained using theoretical analysis of electrodynamic and thermal processes in the heated body.
Findings
In the course of the work, a basic possibility of the objective realization is established, and its high enough efficiency is achieved using a sufficiently large range of modulation parameters.
Practical implications
The described method can significantly improve the technology of thermal treatment of metals and alloys liable to the formation of surface defects due to extreme temperature stresses.
Originality/value
The novelty of the paper consists in the use of phase‐modulated currents in induction heating.
Keywords
Citation
Kapusta, A., Levy, A. and Mikhailovich, B. (2011), "Phase‐modulated currents in induction heating", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 No. 5, pp. 1598-1605. https://doi.org/10.1108/03321641111152757
Publisher
:Emerald Group Publishing Limited
Copyright © 2011, Emerald Group Publishing Limited