Induction Heating for Variably Sized Ferrous and Non-Ferrous Materials through Load Modulation

Senthil Rajan Ramalingam, C. S. Boopthi, Sridhar Ramasamy, Mominul Ahsan and Julfikar Haider
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Senthil Rajan Ramalingam: Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, India
C. S. Boopthi: Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, India
Sridhar Ramasamy: Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, India
Mominul Ahsan: Department of Computer Science, University of York, Deramore Lane, York YO10 5GH, UK
Julfikar Haider: Department of Engineering, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK

Energies, 2021, vol. 14, issue 24, 1-18

Abstract: Induction heating (IH) is a process of heating the electrically conducting materials especially ferromagnetic materials with the help of electromagnetic induction through generating heat in an object by eddy currents. A well-entrenched way of IH is to design a heating system pertaining to the usage of ferromagnetic materials such as stainless steel, iron, etc., which restricts the end user’s choice of using utensils made of ferromagnetic only. This research article proposes a new scheme of induction heating that is equally effective for heating ferromagnetic and non-ferromagnetic materials such as aluminium and copper. This is achieved by having a competent IH system that embodies a series resonant inverter and controller where a competent flexible load modulation (FLM) is deployed. FLM facilitates change in operating frequency in accordance with the type of material chosen for heating. The recent attempts by researchers on all metal IH have not addressed much on the variable shapes and sizes of the material, whereas this research attempts to address that issue as well. The proposed induction heating system is verified for a 2 kW system and is compatible with both industrial and domestic applications.

Keywords: induction heating; load flexible modulation; series resonant inverter; non-ferromagnetic materials (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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