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Abstract

The paper explains the operating principle of an LLC resonant circuit for induction heating applications. Although induction heating has attracted a great deal of attention in recent years, very little consideration on designing the inductor in the resonant circuit for specific requirements has been done. Specifically, a design procedure with the required power and work-head dimension as inputs is still needed, from a practical point of view. In this paper, a quantitative analysis of power transferred to the work-head will be done to help design the resonant circuit. A design procedure for the LLC circuit will be proposed, utilizing results from the quantitative power analysis and taking into account mechanical constraints on the work-head. In addition, a simple technique to monitor the soft switching condition of the power switches in the resonant inverter, utilizing only voltage signals, is also proposed. The feasibility of the proposed design procedure will be demonstrated and verified by simulations and experiments.



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Article Details

Issue: Vol 4 No 1 (2021)
Page No.: 739-747
Published: Mar 31, 2021
Section: Research article
DOI: https://doi.org/10.32508/stdjet.v4i1.751

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Creative Commons License

Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
NGO, T., & Nguyen, N. (2021). LLC Inverter Design Procedure for Induction Heating with Quantitative Analysis of Power Transfer. Science & Technology Development Journal - Engineering and Technology, 4(1), 739-747. https://doi.org/https://doi.org/10.32508/stdjet.v4i1.751

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