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Author Jordan, J. ♦ Magraner, J.M. ♦ Cases, C. ♦ Esteve, V. ♦ Dede, E. ♦ Sanchis, E. ♦ Maset, E. ♦ Ferreres, A. ♦ Ejea, J.B. ♦ Gumbau, E.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2009
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Coils ♦ MOSFET ♦ Temperature ♦ Induction generators ♦ AC generators ♦ Oscillators ♦ Resonant converter ♦ Induction heating ♦ Inductance ♦ IGBT ♦ Frequency ♦ Resonance ♦ Protection ♦ Resonant inverters
Abstract In induction heating applications, the component being heated is very close to the heating coil. Due to the high temperatures reached during the process, isolation is not always possible and short-circuits may happen. Two main types of short-circuit should be considered: complete inductor's short-circuit and short-circuit between windings. Parallel resonant oscillators are widely used in induction heating applications together with a current fed inverter to generate the alternating current. Parasitic inductance in the connection between the inverter and the oscillator tank may generate high over-voltages if the switching is uncontrolled. The aim of the paper is to describe the protections needed to avoid the failure of the transistors due to over-voltages which may occur during the short-circuit process. Short-circuit critical frequency is calculated and determines whether over-voltages will appear after short-circuit occurs.
Description Author affiliation: Departament d'Enginyeria Electrònica. Universitat de València. C/ Dr. Moliner 50, 46100-Burjassot (Valencia) Spain (Jordan, J.; Esteve, V.; Dede, E.; Sanchis, E.; Maset, E.; Ferreres, A.; Ejea, J.B.; Gumbau, E.) || GH Electrotermia C/Vereda Real s/n San A. de Benageber (Valencia) Spain (Magraner, J.M.; Cases, C.)
ISBN 9781424444328
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-09-08
Publisher Place Spain
Size (in Bytes) 626.20 kB
Page Count 9
Starting Page 1
Ending Page 9

Source: IEEE Xplore Digital Library