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Melt Surface Temperature Monitoring In Tiltable Induction Furnace

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Second International Workshop on Magnetic Materials & Nanomaterials

MMN2018 UMBB / Boumerdes 1 – 4 October 2018

Melt Surface Temperature Monitoring In Tiltable Induction Furnace

AOUABDI Salim*1-, BENDJAMA Hocine 1-, BOUTASSETA Nadir 1-- and BOULKROUNE Ramzi 1-

1Research Center in Industrial Technologies CRTI, P.O.Box 64, Cheraga-Algiers-ALGERIA.

{s.aouabdi, h.bendjama, n. boutasseta and r.boulakroune}@crti.dz

ABSTRACT

The supervision of the induction furnace is the subject of increasing development because of the rising demand on reliability and safety. An essential aspect of the pyrometers of induction furnace is the determination of the exact temperature on the melt surface related to the current and frequency flow resulting from optimum coil position depending on the applied actual power. With the aid of the mathematical model that describes the appearance and development of the temperature change in the area of inductive cold wall crucible melting, with the use of the automatic control methods it is possible to determine the change of temperature variation corresponding to direct visualization of a meniscus forms on the melt surface under the energy created by the induction coil, the latter can fully or partly influence the meniscus. To solve the problem of pyrometer temperature variation we propose the determination and the study of the total interaction force related to the operating current of the induction generator. This contribution presents an application for melt temperature change detection through a case study of the tiltable induction furnace with induction generator MFG-20. The study indicates that the pyrometer of the measurement temperature is powerful device related to the development of a new control method.

References

[1] TILTABLE INDUCTION FURNACE, « IT-KTS-400X400/800/1850 WITH INDUCTION GENERATOR MFG- 20 » SERIAL NO.10020306, EDV NO.17478, MAY.2017.

[2] Hans Windsheimer, Roland Waitz and Peter Wubben, « Inductive melting in cold wall crucible : technology and applications » Induction technology, Reports, pp.1-5,2015.

[3] Albert, « Temperature measurement in induction heating applications- methods and innovations » Technical Reports, pp.1-6,2013.

[4] F. JULLIEN, « The IT earthing system (unearthed neutral ) in LV», Cahier technique No/ 178.

[5] J. SCHONEK, « Les protections différentielles en basse tension », Cahier technique No/ 114.

[6] C. David. Whitefield, « New online motor stator insulation Monitor (MSIM) for 3500 System », News, Vol.32, No.1,2012.

[7] Hong-Chan et all, « On-line motor condition monitoring system for abnormality detection », Computers and electrical engineering, pp1-15, 2015.

[8] Karm Younsi, et all, « On- line capacitance and dissipation factor monitoring of AC stator insulation », IEEE Transactions on dielectrics and electrical insulation, Vol.17,No.5, 2010.

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Second International Workshop on Magnetic Materials & Nanomaterials

MMN2018 UMBB / Boumerdes 1 – 4 October 2018

[9] Vincent Choqueuse et all, « Estimation of amplitude, phase and unbalance parameters in three-phase systems:

analytical solutions, efficient implementation and performance analysis », IEEE Transactions on signal processing, vol.62,No.16,2014.

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