Medium frequency induction melting furnace as a load on the power system

Yılmaz,; Ermis,; Cadirci,

doi:10.1109/ias.2011.6074408

Cited by 29 publications

(18 citation statements)

References 9 publications

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“…NDUCTION heating (IH) generators are resonant inverters in which the resonant tank is formed by the heating coil and a series capacitor, in series resonant inverters (SRI) [1]- [3], or a parallel capacitor, in parallel resonant inverters (PRI) [4] [5]. They are used to heat metals to be welded, melted or hardened [6] [7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Pulse-Density-Modulated Power Control for High-Frequency Induction Heating Inverters

Esteve

Jordán

Sanchis-Kilders

et al. 2015

IEEE Trans. Ind. Electron.

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This paper presents a 100 kW, 100 kHz IGBT series resonant inverter for induction heating applications that uses an improved power control scheme based on the standard pulse density modulation (PDM). This standard power control is a good solution for the design of high frequency inverters because the output power factor is near to unity in a wide range of output power, resulting in a great reduction of switching losses and electromagnetic noise. However, the output current can be in discontinuous mode especially for resonant loads of low quality factor or for low output power or low load operation. This output current fluctuation produces a high output current ripple that can lead to an increase of power losses and loss of accuracy of the response of the frequency tracking control. The proposed control strategy, called enhanced pulse density modulation (EPDM), provides twice less output current ripple, thus resulting in an improved inverter behaviour in terms of frequency tracking accuracy and energy efficiency. Experimental tests have been made in order to compare the EPDM strategy with standard power control schemes.

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Section: Introductionmentioning

confidence: 99%

Enhanced Pulse-Density-Modulated Power Control for High-Frequency Induction Heating Inverters

Esteve

Jordán

Sanchis-Kilders

et al. 2015

IEEE Trans. Ind. Electron.

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“…For a current-fed inverter, the simultaneous opening of the four IGBTs is not possible since it is prohibited to open a current source. In order to vary the input power, an additional DC/DC converter is needed [5], [25]. The first and second derivatives of u u u and the first derivative of i i i are given by 9 u u u = ( 9 r + jr 9 ϕ) e jϕ , : u u u = : r − r 9 ϕ 2 + j (2 9 r 9 ϕ + r : ϕ) e jϕ and di i i dt = j 9 θje jθ .…”

Section: A System Descriptionmentioning

confidence: 99%

Novel Phasor Transformation for Feedback Control Design of Induction Heating Systems With Experimental Results

Zerad

Riachy

Toussaint

et al. 2015

IEEE Trans. Ind. Electron.

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For analyzing the transients of induction heating systems, time-dependent phasor transformations were proposed so far in the literature. Applying these transformations to a linear R, L, C circuit equations leads to differential equations in the complex domain from which equivalent circuits modeling the envelopes of sinusoidal waveforms were derived. The present work proposes a phasor transformation which is based on fictitiously replacing the real voltage and current signals of a system by complex ones. It leads to transformed system equations in the real domain where instantaneous amplitudes, phases and frequencies appear explicitly, which makes the transformed equations suitable for the feedback control design. The methodology is applied to a parallel induction heating system in order to design a sliding mode controller. The theory is supported by simulations, experiments and comparisons.

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“…It includes some features like cleanliness, speed and portability of heat sources. However, in recent years, induction heating has also been introduced in some minimally invasive therapies [9]. Hyperthermia is a cancer therapy based on heating the target tumour at temperatures over 50 0 C. This local treatment removes cancer tissue while minimizing the damage to surrounding healthy cells.…”

Section: Medical Applicationsmentioning

confidence: 99%

“…Fig. 1 shows a typical arrangement of an induction heating system [6], [9] in a longitudinal flux configuration. An AC source is used to supply alternating voltage to an the induction heating coil.…”

Section: Introductionmentioning

confidence: 99%

Induction heating as fluid geyser

Patil

Bhadade²

2015

2015 International Conference on Industrial Instrumentation and Control (ICIC)

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Induction heating has become extremely popular in recent times across the globe, as most of the kitchens use induction cookers for preparing food. It has become especially popular owing to their increase in efficiency and user friendliness. Because of the advancement in technology, it is now possible to use this device in household applications. Owing to induction heating the pan is directly heated without thermal inertia. The efficiency of appliances using the principle of induction is more than that of traditional methods like immersion heaters and LPG geysers. In this paper, we propose the method in which the fluid will get heated directly from the coil. The experimental results show that efficiency of the suggested method increases nearly by about 20%.

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Medium frequency induction melting furnace as a load on the power system

Cited by 29 publications

References 9 publications

Enhanced Pulse-Density-Modulated Power Control for High-Frequency Induction Heating Inverters

Enhanced Pulse-Density-Modulated Power Control for High-Frequency Induction Heating Inverters

Novel Phasor Transformation for Feedback Control Design of Induction Heating Systems With Experimental Results

Induction heating as fluid geyser

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