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

Ramalingam, Senthil Rajan, Boopthi, CS, Ramasamy, Sridhar, Ahsan, Mominul and Haider, Julfikar ORCID logoORCID: https://orcid.org/0000-0001-7010-8285 (2021) Induction Heating for Variably Sized Ferrous and Non-Ferrous Materials through Load Modulation. Energies, 14 (24). p. 8354.

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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.

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