Analysis and Design of a Current-Source CLCC Resonant Converter for DBD Applications

This paper presents the analysis and optimal design of a current-source four-element CLCC resonant converter used in dielectric barrier discharge (DBD) field. Mathematically, by analyzing different operating modes, the expressions that accurately describe the behavior of the converter under any load conditions are derived. In addition, the characteristic parameters are expressed as functions of inherent circuit parameters and the control variables to make the analytical results readily employed. Also, an optimal design method is developed to facilitate a decrease of the primary winding current of the transformer and a reduction of the switching frequency variation of the inverter. An 8-kW DBD power supply for the surface treatment (one of the applications of DBD) is designed using the proposed method. The simulation and experimental results are given to verify the proposed analysis and design.

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