Travelling wave inductors for the continuous induction heating of metal strips

Dughiero, Fabrizio; Lupi, Sergio; Nemkov, Valentin; Siega, P.

doi:10.1109/melcon.1994.380864

Cited by 9 publications

(6 citation statements)

References 2 publications

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“…The importance of this example is that measurement is available in addition to calculation. The other example is based on FEM solution for DSIH system [9]. For comparison reasons, FEM computation is adopted in our analysis which is widely used as a numerical technique for this kind of applications.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Reference [9] employed a double sided induction heating system whose data are given in Table 3. For the sake of comparison, the same model is adopted as a single sided induction heating system using the same line current density by removing one of the inductors along with its backing iron.…”

Section: Single Sided and Double Sided Traveling Wave Induction Heatimentioning

confidence: 99%

“…3-D finite element method (FEM) has been employed in the analysis of TFIH systems [1][2][3][4][5][6][7][8] while 2-D and 3-D FEM have been employed in the analysis of TWIH systems [9][10][11][12][13]. Few papers relating to analytical methods for the analysis of single phase and traveling wave but cylindrical induction heating systems have been published [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Double and Single Sided Induction Heating Systems by Layer Theory Approach

Qaseer¹

2010

JEMAA

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The iterative layer theory approach is applied to the analysis of double sided and single sided induction heating systems for continuous heating of thin metal strips. The excitation is transverse to the direction of strip motion and can be three phase or single phase. Nonmagnetic as well as ferromagnetic strips are employed. The important system parameters, namely, strip resistance, reactance, induced power and electromagnetic force are introduced. Accuracy of the method is verified with measurement of practical induction heating system together with comparison to numerical and analytical methods

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Single Sided and Double Sided Traveling Wave Induction Heatimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Double and Single Sided Induction Heating Systems by Layer Theory Approach

Qaseer¹

2010

JEMAA

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“…For a two-phase system, the optimal current phase shift is close to 90˚, for three-phase it is approximately 120˚, and so on [13]. The greater the number of phases, the smaller the temperature gradients that can be achieved [14].…”

Section: Travelling Wave Induction Heatingmentioning

confidence: 99%

Decoupling of Currents in Travelling Wave Induction Heating

Frogner¹,

Cedell²,

Andersson³

2014

JEMAA

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Travelling wave induction heating (TWIH) suffers from severe interference between the coils, which significantly reduces its efficiency. A strategy for decoupling the currents in TWIH is presented, based on the anti-series or anti-parallel connection of several inductors. The study investigates the coupling effect in terms of amplitude and phase shift as functions of current and frequency, respectively, including resonance behavior. In addition, the effects of deviations of the inductor properties are analyzed. Measurements indicate that the strategy produces very good results, almost eliminating the coupling effect, increasing the efficiency, and simplifying control. Simulated and measured results of the heating pattern are compared and efficiency values and power densities are presented.

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“…The number of phases also plays a key role in determining the uniformity of the heating [19]; a greater number of individually controllable coils creates more possibilities but increases the complexity and cost. Many investigations of single-and multi-phase induction heaters also involve double-sided heating, which, depending on the configuration, has the benefit of cancelling out the magnetic fields even when there is no load; in practical applications, however, there is not always space for two heating units.…”

Section: Travelling Wave Induction Heatingmentioning

confidence: 99%

Induction heating using a two-phase travelling wave setup

Frogner

Cedell

Andersson

2014

JAE

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A laboratory implementation of a two-phase travelling wave induction heating setup is described. The focus is the development of a versatile power control system for multi-coil experiments and parameter studies. The drive system features high temporal accuracy, full real-time controllability, and integrated measurement technology, analyzed step wise. The performance was tested using a full pitch travelling wave inductor based on litz wire with a flux concentrator from a powder material. Thermographic images from the experiments are presented and the results are compared with simulations. The challenges related to multi-coil configurations are explained, many of which are difficult to predict from simulations.

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Travelling wave inductors for the continuous induction heating of metal strips

Cited by 9 publications

References 2 publications

Analysis of Double and Single Sided Induction Heating Systems by Layer Theory Approach

Analysis of Double and Single Sided Induction Heating Systems by Layer Theory Approach

Decoupling of Currents in Travelling Wave Induction Heating

Induction heating using a two-phase travelling wave setup

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