PARAMETERS DESIGN OF A PHASE SHIFT FULL BRIDGE CONVERTER WITH A RESONANT TANK FOR HIGH DIRECT CURRENT APPLICATIONS
Journal Title: International Journal of Electrical and Electronics Engineering Research (IJEEER) - Year 2017, Vol 7, Issue 1
Abstract
In high current power supply applications, phase shift full bridge zero voltage switching (PSFB ZVS) converters have been used with the benefit of ZVS technique. In a conventional PSFB converter, switching loss, conduction loss, and voltage drop on diodes of secondary side rectifier are experienced, and still left problems unsolved, especially with respect to high primary current. This paper presents parameters design of the PSFB with an additional resonant tank for high direct current applications considering all the problems mentioned above. Magnetizing inductance of transformer is determined. A series capacitor is added to reduce the high circulating current and current stress in the transformer. Both of these components are dealt as a resonant tank. Based on the characteristics of the resonant tank, ZVS area can be found. The voltage drop on diodes of secondary side rectifier can be stayed under limits, and conduction loss can be reduced if the capacitor and inductor are suitably parameterized. The parameters of transformer, resonant tank, and output filter are designed by proposed parameters design procedure. Simulation result demonstrates the switching loss, and conduction loss reduction by selecting the suitable values of magnetizing inductance, and resonant tank parameters. The performance of high current power supply is verified by the hardware experiment of a 500 A PSFB converter.
Authors and Affiliations
TAT-THANG LE, MINH-CHAU DINH, CHUL-SANG HWANG, MINWON PARK, IN-KEUN YU
Keywords
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