Short-Circuit Critical Frequency for Induction Heating Parallel Resonant Inverters

被引：0

作者：

Jordan, J. ^{[1
]}

Magraner, J. M. ^{[2
]}

Cases, C. ^{[2
]}

Esteve, V. ^{[1
]}

Dede, E. ^{[1
]}

Sanchis, E. ^{[1
]}

Maset, E. ^{[1
]}

Ferreres, A. ^{[1
]}

Ejea, J. B. ^{[1
]}

Gumbau, Eva ^{[1
]}

机构：

[1] Univ Valencia, Dept Elect Engn, C Dr Moliner 50, E-46100 Valencia, Spain

[2] GH Electrotermia, Valencia, Spain

来源：

EPE: 2009 13TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS, VOLS 1-9 | 2009年

关键词：

Induction heating; MOSFET; IGBT; Resonant converter;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

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.

引用

页码：3407 / +

页数：2