A New Topology for Induction Heating System With PM Excitation: Electromagnetic Model and Experimental Validations

Abstract

This paper presents a new structure of an induction heater for aluminium parallelepiped workpiece. The studied device uses a magnetic field created by a permanent magnets (PM) inductor (Halbach inductor) in which the conducting workpiece is subjected to a linear oscillatory motion with alternating velocity. An analytical electromagnetic model is developed to find the induced heating power in the workpiece. To consider the transverse edge effect, an analytical corrected model is also presented. The most important results obtained by these models are verified experimentally on a prototype. Index Terms-, analytical model, oscillatory linear motion, permanent magnet, transverse edge effect. 0018-9464 (c)

Permanent magnet linear induction heating device: new topology enhancing performances

“…In this paper, a new linear permanent magnet induction heating device topology is proposed. It consists in substituting superconductors by modern permanent magnet inductor (Mach et al , 2012; Mach et al , 2014; Bensaidane et al , 2015). The arrangement of the permanent magnets is very important to ensure the concentration of the field and consequently to inject a maximum and a homogeneous distribution of power in the workpiece to be heated, which will allow a heart heating.…”

Eddy Current Computation in Translational Motion Conductive Plate of an Induction Heater With Consideration of Finite Length Extremity Effects

“…The well-known principle is based on the fact that any stationary conductor placed in a variable magnetic field is flowed by eddy currents creating Joule losses. Another induction heating process is to move the conductive plate in a static magnetic field [1], [2], [3].…”

“…This paper proposes an exact 3D electromagnetic model to compute heating power in the conducting plate of a novel translational motion heating device [1].…”

“…In [1], we have developed a 2D analytical model to compute the heating power in the studied device. In order to consider the edge effects, a correction factor has been used.…”

Optimisation and measurement of eddy current damping in a passive tuned mass damper

“…Publications in literature provide semi-analytical and analytical solutions for eddy currents and electromagnetic damping [7][8][9][10][11]. Few publications apply single or multiple layers of current mirrors to mimic the finiteness of the conductor [12], whereas others assume periodicity in the permanent magnet (PM) array [13]. However, periodicity is not present in the PM array of the TMD and, therefore, not suitable.…”