A New Zone-Control Induction Heating System Using Multiple Inverter Units Applicable Under Mutual Magnetic Coupling Conditions

Fujita, Hideaki; Uchida, Naoki; Ozaki, Kazuhiro

doi:10.1109/tpel.2010.2101084

Cited by 91 publications

(38 citation statements)

References 17 publications

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“…But 3D modeling of induction heating is time consuming. In this paper, induction heating model is created as 2D FE model in the help of assumption of input current as = J = I (6) where I, S, are input current, cross sectional area of the coil and unit vector in the circumferential direction respectively. This article has been accepted for publication in a future issue of this journal, but has not been fully edited.…”

Section: A Finite Element Modelingmentioning

confidence: 99%

“…However, it is challenging to design induction coils for complex-shaped mechanical parts. The simultaneous dual frequency (SDF) heating method uses two different frequencies of currents to harden the surface layer of a gear with a uniform contour thickness [5] and this has focused on achieving more even temperature distribution along the outer contour of gears [6,7]. In SDF, medium frequency current and high frequency current are used simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Heat Treatment of Gears Using a Simultaneous Dual Frequency Induction Heating Method

et al. 2015

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This paper presents the development of a simultaneous dual frequency (SDF) induction hardening apparatus for gear hardening process. First, 2D FE modeling for thermal-electromagnetic coupled field is introduced for gear hardening and the analytical results are investigated. By modeling the gear hardening as 2D FE model, we can calculate for the coupled field more efficiently. And optimum process parameters can also be found through this analysis. A real SDF heat treatment equipment is manufactured using analytical results like input frequency and gear hardening experiments are conducted. Through analysis and experiments, we can validate the performance of the developed machine.

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Section: A Finite Element Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Heat Treatment of Gears Using a Simultaneous Dual Frequency Induction Heating Method

et al. 2015

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“…As the amplitude and frequency change, the phase shift of the induced current is significantly affected (see Figure 3(b)). This means that the system becomes difficult to control, as demonstrated by Fujita et al [4], and that the efficiency is limited.…”

Section: Travelling Wave Induction Heatingmentioning

confidence: 99%

“…Studies of ZCIH demonstrate that the need for proper control design to achieve good results as well as the importance of maintaining the same current phase angle to prevent interaction that severely reduces the efficiency [4]. A selected combination of frequencies has also been demonstrated to produce good results [8].…”

Section: Introductionmentioning

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 inverter is connected to one of the loads based on the selected resonant frequency. Authors in [6,7,15] have proposed a zone control induction heating method (as shown in Fig. 1) in which the working coil is divided into several split coils each controlling the particular zone of the work piece.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Multi Coil Induction Heating System for Semiconductor Processing

Nisha¹,

Vishwas²,

Suryanarayana³

et al. 2016

International Journal of Innovative Research in Electrical, Ele

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Abstract:Heating by induction is a promising technology for processing circular semiconductor wafers because it offers quick and high temperature heating. Heat develops inside the work piece hence losses due to conduction and radiation is reduced. It is rather difficult to attain uniform temperature distribution in the work piece using single coil induction heating method. In this paper, a multi coil induction heating system for processing circular semiconductor wafers is proposed. The working coil or inductor is divided into a number of multi turn coils. The paper presents ANSYS Maxwell 3D modelling and simulations of the four coil induction heating system. The phase angle between the currents differs by 90º to generate a travelling wave magnetic field that can uniformly heat the subsector.

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A New Zone-Control Induction Heating System Using Multiple Inverter Units Applicable Under Mutual Magnetic Coupling Conditions

Cited by 91 publications

References 17 publications

Investigation of Heat Treatment of Gears Using a Simultaneous Dual Frequency Induction Heating Method

Investigation of Heat Treatment of Gears Using a Simultaneous Dual Frequency Induction Heating Method

Decoupling of Currents in Travelling Wave Induction Heating

Analysis of Multi Coil Induction Heating System for Semiconductor Processing

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