Steady-state analysis of ZVS and NON-ZVS full-bridge inverters with asymmetrical control for induction heating applications
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Author list: Yachiangkam S., Sangswang A., Naetiladdanon S., Koompai C., Chudjuarjeen S.
Publisher: Springer
Publication year: 2015
Journal: Journal of power electronics (1598-2092)
Volume number: 15
Issue number: 2
Start page: 544
End page: 554
Number of pages: 11
ISSN: 1598-2092
eISSN: 2093-4718
Languages: English-Great Britain (EN-GB)
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Abstract
This paper presents a steady-state operation analysis of full-bridge series-resonant inverters focusing on the distorted load current due to low-quality-factor resonant circuits in induction heating and other applications. The regions of operation based on the zero-voltage switching (ZVS) and non-zero-voltage switching (NON-ZVS) operations of the asymmetrical voltage-cancellation control technique are identified. The effects of a distorted load current under a wide range of output powers are 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 the variable frequency method and the conventional fixed-frequency method is provided. ฉ 2015 KIPE.
Keywords
Asymmetrical voltage-cancellation, Series-resonant inverter
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