Steady-State Analysis of ZVS and NON-ZVS Full- Bridge Inverters with Asymmetrical Control for Induction Heating Applications

This paper presents a steady-state operation analysis of full-bridge series-resonant inverters focusing on the distorted loadcurrent due to low-quality-factor resonant circuits in induction heating and other applications. The regions of operation based onthe zero-voltage switching (ZVS) and non-zero-voltage switching (NON-ZVS) operations of the asymmetricalvoltage-cancellation control technique are identified. The effects of a distorted load current under a wide range of output powersare also analyzed for achieving a precise ZVS operating region. An experimental study is performed with a 1kW prototype. Simulation and experimental studies have confirmed the validity of the proposed method. An efficiency comparison between thevariable frequency method and the conventional fixed-frequency method is provided.

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Cite this article

[IEEE Style]

S. Yachiangkam, A. Sangswang, S. Naetiladdanon, C. Koompai, S. Chudjuarjeen, "Steady-State Analysis of ZVS and NON-ZVS Full- Bridge Inverters with Asymmetrical Control for Induction Heating Applications," Journal of Power Electronics, vol. 15, no. 2, pp. 544-554, 2015. DOI: 10.6113/JPE.2015.15.2.544.

[ACM Style]

Samart Yachiangkam, Anawach Sangswang, Sumate Naetiladdanon, Chayant Koompai, and Saichol Chudjuarjeen. 2015. Steady-State Analysis of ZVS and NON-ZVS Full- Bridge Inverters with Asymmetrical Control for Induction Heating Applications. Journal of Power Electronics, 15, 2, (2015), 544-554. DOI: 10.6113/JPE.2015.15.2.544.