Control Algorithms for Inductors Movement in Induction Heated Calenders

2012 ◽  
Vol 17 (4) ◽  
pp. 51-57
Author(s):  
Andrzej Frązyk ◽  
Piotr Urbanek ◽  
Jacek Kucharski
Keyword(s):  
Temperature Profile ◽  
Induction Heating ◽  
Control Algorithms ◽  
Uniform Temperature ◽  
Cylinder Axis ◽  
Steel Cylinder ◽  
Modern Technologies ◽  
Temperature Amplitude

Abstract Fixed, placed at regular distances inductors for induction heating of a rotating steel cylinder do not provide sufficiently uniform temperature profile along cylinder axis required by modern technologies,. The article examines the influence of inductors movement along the cylinder axis on the reduction of pick-to- pick temperature amplitude.

Development of barrel heating system in injection molding machine via induction heating

2015 ◽  
Vol 21 (3) ◽  
pp. 244-249 ◽  
Author(s):  
Huy-Tien Bui ◽  
Sheng-Jye Hwang
Keyword(s):  
Temperature Distribution ◽  
Magnetic Flux ◽  
Induction Heating ◽  
Heating System ◽  
Resistance Heating ◽  
Uniform Temperature ◽  
Content Type ◽  
Uniform Temperature Distribution ◽  
Proper Design ◽  
Induction Heating System

Purpose – The purpose of this paper is to develop a barrel heating system using induction heating instead of resistance heating. And, a working coil for the induction heating system was designed so that the barrel has uniform temperature distribution. Design/methodology/approach – A coupling design combining the pitch of turns of working coil with the magnetic flux concentrators in the barrel induction heating system was developed to achieve uniform temperature distribution which was approximately the same as temperature uniformity obtained from that of resistance heating system. Findings – In contrast to resistance heating method, induction heating is more efficient because the heating is directly applied on the work-piece. Its heating rate is higher than that of resistance heating method. However, the uneven temperature distribution in the barrel is the main disadvantage of the induction heating system. But, with proper design of adjusting the pitch of turns at the center of working coil and adding magnetic flux concentrators at areas with lower magnetic flux, the barrel heating system via induction can achieve temperature distribution uniformity. Originality/value – Under proper design of working coil, the barrel heating system by induction method can achieve the same uniform temperature distribution as the barrel heated by resistance method, and could be practically used in an injection molding machine.

Search optimal control of induction heating modes for a moving workpiece

2020 ◽  
Vol 39 (1) ◽  
pp. 81-89
Author(s):  
Ivan Alexandrovich Smolyanov ◽  
Fedor Tarasov
Keyword(s):  
Control System ◽  
Mathematical Models ◽  
Induction Heating ◽  
Management Theory ◽  
Electrical Heating ◽  
Industrial Plant ◽  
Control Algorithms ◽  
Content Type ◽  
Distributed Parameters ◽  
Object Management

Purpose This paper aims to create mathematical models and control algorithms allowing the authors to study and form effective modes of operation of multi-inductor system of electrical heating of moving hollow cylindrical blanks. Design/methodology/approach The developed mathematical models were based on the finite-difference method, the control volume method and their combination. The reliability of the results obtained was verified by comparing the calculated results with the experimental ones. The temperature control system was synthesized using methods of the object management theory with distributed parameters. Findings A set of mathematical instruments has been created that allow modelling the operation modes of installation for induction heating of moving hollow cylindrical blanks. Recommendations were given on the formation of an automatic control system that provides heating of a moving hollow cylindrical billet to the required temperature with simultaneous equalization of temperature along the length of the billet in case of highly uneven initial temperature along the length of the billet. Practical implications Part of the paper will be used by the industrial plant for the purpose of heat treatment of iron alloys workpiece. Particularly, a control system will be basically formed based on the models. Originality/value The scientific novelty of the paper is to create control algorithms and mathematical models for the induction heating system of tubular workpieces allowing to explore interrelated electromagnetic and thermal processes taking into account nonlinearities and design features of the system, as well as to form effective modes of its operation based on transfer functions and methods of the object management theory with distributed parameters.

scholarly journals OPTIMIZATION OF STATIONARY AND TRANSITIONAL OPERATING MODES OF THE ELECTRICAL COMPLEX IN METAL PROCESSING LINE

2021 ◽  
Vol 11 (3) ◽  
pp. 157-167
Author(s):  
Aleksandr I. DANILUSHKIN ◽  
Vasilij A. DANILUSHKIN
Keyword(s):  
Induction Heating ◽  
Power Distribution ◽  
Internal Heat ◽  
Heating System ◽  
Function Optimization ◽  
Nonlinear Dependence ◽  
Control Algorithms ◽  
Heating Unit ◽  
Induction Heater ◽  
Heater Length

In the electrical complex “induction heater - deforming equipment”, the limiting performance of the complex is the induction heating unit. In this regard, an important task of increasing the effi ciency of the processing complex is to optimize both the design and operating parameters of the induction heating unit. It is shown that the main design parameter infl uencing the energy characteristics of the complex is the length of the heating system. When optimizing the total length of the heater, an iterative model of the process of induction heating of ferromagnetic billets is used. The power distribution algorithm along the length of a two-section heater is a piecewise continuous function. Optimization of the heater length according to the proposed method made it possible to reduce the heater length from 2.8 m to 2.1 m, i.e. by 25%. To search for eff ective control algorithms for non-stationary modes, a refi ned electrothermal model is proposed in the work. It takes into account the nonlinear dependence of the distribution of the power of the sources of internal heat release on the temperature distribution in the metal of the workpieces along the radial and axial coordinates. The problem of fi nding the optimal control of transient modes of a two-section induction heater of methodical action is formulated and solved. The results obtained provide a minimum of energy consumption for heating billets in transient modes under conditions of technological and energy constraints. Variants of starting the heater at various initial temperature states of the load are considered. The results of a comparative analysis of the eff ectiveness of the obtained control algorithms are presented. The structure of the power supply and control system of the induction heating complex is proposed.

scholarly journals Velocity-Controlled Particle Swarm Optimization (PSO) and Its Application to the Optimization of Transverse Flux Induction Heating Apparatus

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 487 ◽  
Author(s):  
Youhua Wang ◽  
Bin Li ◽  
Liuxia Yin ◽  
Jiancheng Wu ◽  
Shipu Wu ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Temperature Distribution ◽  
Induction Heating ◽  
Particle Swarm ◽  
Support Vector ◽  
Uniform Temperature ◽  
Swarm Optimization ◽  
Uniform Temperature Distribution ◽  
Transverse Flux ◽  
Better Than

The main disadvantage of transverse flux induction heating (TFIH) is its resulting non-uniform temperature distribution on the surface of the strip at the inductor outlet. For obtaining a uniform temperature distribution, an improved particle swarm optimization (PSO) named velocity-controlled PSO (VCPSO) is proposed and applied to optimize this problem. Support vector machine (SVM) is adopted to establish a regression model to replace the complex and time-consuming coupling calculation process involved in TFIH problem. Simulation results of several test functions show that VCPSO performs much better than standard PSO (SPSO). Moreover, based on the existing research and experiments, the application of VCPSO combined with SVM to the TFIH problem achieves satisfactory results.

scholarly journals Uniform temperature profile for a dense array CPV receiver under non uniform illumination profile

2014 ◽  
Author(s):  
Sara Riera ◽  
Jérôme Barrau ◽  
Arnaud Perona ◽  
Alain Dollet ◽  
Joan I. Rosell ◽  
...  
Keyword(s):  
Temperature Profile ◽  
Uniform Temperature ◽  
Dense Array ◽  
Uniform Illumination
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