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Dual output direct AC–AC series resonant converter for all metal induction heating system with a hybrid control technique

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Abstract

A dual output direct AC–AC series resonant converter is presented in this paper, to meet the requirements of modern domestic induction heating. To address the significant limitations of the classic induction heating system, a hybrid control approach comprising pulse frequency modulation and asymmetrical duty-cycle control is developed. A single source is connected to multiple loads with this control technique to achieve minimum switching losses; power controllability of two loads is achieved independently and simultaneously. The power controllability of two loads is achieved independently and simultaneously. This research presents an induction heating system that can heat both ferromagnetic and non-ferromagnetic materials, such as steel and aluminum. A prototype is developed to use switching frequencies of 30 kHz and 150 kHz for steel load and aluminum load, respectively. The experimental setup resulted in an efficiency of 97.5% under wide load resonant condition. The suggested hybrid control approach allows the converter to regulate a wide range of output power while increasing efficiency, making it suitable for practical induction heating.

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Authors and Affiliations

  1. Department of Electrical Engineering, NIT Jamshedpur, Jharkhand, 831014, India

    A. Kumaraswamy & Ananyo Bhattacharya

  2. Indian Institute of Technology (Indian School of Mines), Dhanbad, India

    Pradip Kumar Sadhu

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  1. A. Kumaraswamy
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  2. Ananyo Bhattacharya
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  3. Pradip Kumar Sadhu
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Kumaraswamy, A., Bhattacharya, A. & Sadhu, P.K. Dual output direct AC–AC series resonant converter for all metal induction heating system with a hybrid control technique. Electr Eng 105, 1363–1375 (2023). https://doi.org/10.1007/s00202-023-01743-4

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