A Dual-Output Induction Heating Machine Using a Modified Half-Bridge Inverter

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Watanyu Meesrisuk
Narongrit Sanajit
Anuwat Jangwanitlert


      This paper aims to present a modified half-bridge inverter for applying as a dual-output induction heating machine. By using a series-resonant principle, the output power of inverter could be adjusted. In addition, main switches in the circuit could operate under a zero-voltage switching condition (ZVS) resulting in eliminating switching power losses during the turning on stage. The proposed circuit was designed, built and tested at          1,300 W of total rated power (650 W for each load), 230 V 50 Hz of AC input voltage and 40 - 50 kHz of switching frequency by using three sizes of iron work pieces (12, 9 and 6 mm of diameter). From experimental results, the maximum efficiency of inverter was 98.67 %.


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Meesrisuk, W., Sanajit, N., & Jangwanitlert, A. (2019). A Dual-Output Induction Heating Machine Using a Modified Half-Bridge Inverter. Naresuan University Engineering Journal, 14(1), 41–49. Retrieved from https://ph01.tci-thaijo.org/index.php/nuej/article/view/133709
Research Paper


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