Focusing on practical methods for solving real engineering optimization problems, the text features a variety of specific optimization examples for induction heater modes and. Design procedures are thoroughly covered for heat treating. Optimal control of multifrequency induction hardening dietmar homberg joint work with thomas petzold wias and elisabetta rocca universita degli studi di milano mohrenstrasse 39 10117 berlin germany tel. Induction heating is the process of heating an electrically conducting object usually a metal by electromagnetic induction, through heat generated in the object by eddy currents. Induction heating processes have become increasingly used in these last years in industry. The basics of electromagnetic and heat transfer theory are used to describe the dynamics of induction heating processes of rectangle workpieces. Induction heating is used to heat a metal rod by placing the part inside a metal coil. Induction heating is a process which is used to bond, harden or soften metals or other conductive materials.
Operations research proceedings 2001 selected papers of the international conference on operations research or 2001 duisburg, september 35, 2001, vol 2001. Slides at applicationsandcasestudies150424296 the industrial process. This paper presents another approach new optimal control techniques 2 4. The basic principles of induction heating have been understood and applied to manufacturing since the 1920s. Improved performance and optimization of the transient processes is. This book is ideal for all students, production managers, engineers, designers, scientists, and users of. Optimal control of threedimensional stateconstrained. Aug 08, 2007 temperature measurement is an important aspect of induction heating control.
Ultraflex offers a variety of turn key ir temperature sensing and control systems to simplify and assist with your induction heating application control. Measuring temperature in inductionheating processes using. Induction heating principle theory,what is induction heating. The theoretic background of an optimal control task for a precision induction heating problem is studied in this work. When the induction coil is placed next to or around a workpiece, the lines of force concentrate in the air gap between the coil and the workpiece. Design of induction heating lines using elta program.
May 10, 2011 interrelated processes in induction heating computer simulation process control machine operating mode power supply circuits thermal process heating electromagnetic process cooling quenching stresses structural transformations distortions. Main applications industrial induction heating system design. Induction heating processes optimization a general optimal. A sound introduction to the broad theory of optimal control, optimal control of induction heating processes presents a clear and accessible approach to the modern design and control of practical, costeffective induction heating processes. Pdf in general, conventional induction heating system is designed only. These properties make the blue shaded region the ideal place to operate in order to achieve control over induction heating power. We consider optimal control problems arising in induction heating processes. Inductive heating of a billet simulation tutorial comsol blog.
Heating characteristic and thermal optimization of superconducting. The images accompany this may feature article, which takes a look at the options, process and questions that will help you make the decision to automate your induction heating process. Temperature control and monitoring ultraflex power technologies. To model the heating process, timeharmonic maxwell equations are considered in the system of the state. This lends it to processes where a high degree of cleanliness is paramount, such as in semiconductor manufacturing, for example. The paper is concerned with a class of optimal heating problems in semiconductor single crystal growth processes. With electric heating, the substance can be heated uniformly, throughout whether it may be conducting or nonconducting material. Therefore, the process optimization and process control of induction. An induction heater consists of an electromagnet and an electronic oscillator that passes a highfrequency alternating current ac through the electromagnet. How induction heating works ultraflex power technologies. Aug 21, 2017 ultraflex offers a variety of turn key ir temperature sensing and control systems to simplify and assist with your induction heating application control. In this heating, temperature can be controlled and regulated accurately either manually or automatically. Optimal control of induction heating processes demonstrates how to apply and use new optimization techniques for different types of induction heating installations. Gh group training programs is the right tool to get the better return on your investment.
The unrivalled accuracy, control and efficiency of induction heating makes it ideal for. Goldstein, research engineer centre for induction technology, inc. Comsol multiphysics is able to cleverly simulate them through combining the frequency domain modeling of the magnetic field with a stationary simulation of the heat transfer, using its inductive heating interface. So, induction heating takes place without physical contact between the workpiece and induction coil. About efd induction induction heating technology and induction heating equipment. Pdf design and performance evaluation of a multipurpose hts.
Induction heating is an accurate, fast, repeatable, efficient, noncontact technique for heating metals or any other electricallyconductive materials. Our training service enables to improve the performance of your installation providing you the knowledge to be able to use the equipment solved some issues avoiding downtime and therefore increasing your profit. I 5 process with very little influence of the steam temperature on the temperature of the air at the exit from the humidification device b adiabatic humidification in which hot water is sprayed into the air stream. Induction heating operation, applications and case studies. Computer simulation of induction heating processes dr. Jul 03, 2016 induction heating is a contactless heating method of bodies, which absorb energy from an alternating magnetic field, generated by induction coil inductor. Alternating current flowing through a coil generates a magnetic field. Since actions speak louder than words, we have included a video tutorial of this interaction for your viewing. Inverse model for the control of induction heat treatments ncbi. Induction heating line is an object which may be relatively easy optimized 2 5. Induction heating system design quickfield fea software. Potentials of optimal control techniques in induction through. On optimal control of heating processes springerlink.
Proper temperature ensures that the parts will meet the metallurgical parameters needed by the end user. The basics of electromagnetic and heat transfer theory are used to describe. The industrial process heating applications that use electrotechnologies have been found to improve product quality, productivity, energy. Description of the problem let us consider the problem of optimal control for induction through heating process with continuous movement of billets. Optimal control configuration of heating and humidification proc esses. Theory of heating by induction 7 tromagnetic, or flux around it. To summarize, we have developed an optimization procedure for induction heating processes. Online induction heating power calculation please fill out the parameters below for your theoretical induction heating process calculation. Induction heating power calculation tool your induction. Physical and technical basics of induction heating. Automating your induction heating production process. An induction heating system consists of an induction power supply for converting line power to an alternating current and delivering it to a workhead, and a work coil for generating an.
It has been applied to large heating systems in metallic processing. What is induction heating and how do induction coils work. Stateconstrained optimal control of semilinear elliptic. Jun 18, 2011 induction heating is used to heat a metal rod by placing the part inside a metal coil. Induction heating operation, applications and case. Optimal control of induction heating processes edgar. Induction heating is a rapid,clean, nonpolluting heating form which can be used to heat metals or change the conductive materials properties.
For modern manufacturing processes, induction heating offers an attractive combination of speed, consistency, control and energy efficiency. The part never touches the coil, and the coil itself is not too hot to touch. In the second part of this course the author explains, how the electrical efficiency of an induction heating process depends on the design of the. Numerical investigation of optimal control of induction. This article discusses measuring temperature in induction heating processes, with examples focusing on noncontact infrared temperature measurement. Fdm is effectively used for many tasks of optimization of planeparallel and cylindrical systems for induction heating. The induction coil actually functions as a transformer primary, with the workpiece to be heated becoming the transformer secondary. Optimal control of multifrequency induction hardening. This power calculation gives you approximate refrence value for your induction heating application. The strength of the field varies in relation to the strength of the current.
The main advantages of using these processes when compared to any other heating process gas furnace are, among others, their fast heating rate, good reproducibility and low energy consumption. It illustrates the theory and some examples of optimization in the field of induction through heating. Use of temperature control in induction heating 20191028t14. The book discusses the theory of induction heating, tuning of induction heating circuits and load matching and summarizes major equipment considerations in designing induction heating systems. Or heating of material by means of an electric current that is caused to flow through the material or its container by electromagnetic induction. Buy optimal control of induction heating processes mechanical engineering on. The goal is to control the quality of heating and to prescribe a temperature to reach either in the whole domain or on a prescribed closed curve. For many modern manufacturing processes, induction heating offers an attractive combination of speed, consistency and control. The coil itself does not get hot and the heating effect is under controlled. Use of temperature control in induction heating youtube. Optimal control of induction heating processes mechanical. We are mainly concerned with two classes of these processes.
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