Lumped parameter model of the novel L-C-T used in the PSFB ZVS converter

Abstract

A novel inductor-capacitor-transformer (L-C-T) has been proposed to integrate the passive components into an integrated magnetic component. The phase-shift full-bridge (PSFB) zero-voltage switching (ZVS) converter with a novel L-C-T has high-power density performance, which is used in electromagnetic exploration. The structure of the novel L-C-T is very complicated, and the lumped parameter of the L-C-T is very difficult to determine. Based on the dual method of the magnetic circuit, the electromagnetic energy method and the six-lumped capacitance method, a lumped parameter model suitable for the novel L-C-T is proposed. Moreover, the experiments and finite element analysis (FEA) are used to verify the accuracy of the lumped parameter model, and a 40 kW prototype of the PSFB ZVS converter with a novel L-C-T is designed and tested.

Keywords

• zero voltage switching
• finite element analysis
• capacitors
• bridge circuits
• inductors
• lumped parameter networks
• phase shifters
• passive networks
• transformer magnetic circuits
• lumped parameter model
• PSFB ZVS converter
• passive components
• integrated magnetic component
• phase-shift full-bridge zero-voltage switching converter
• high-power density performance
• electromagnetic energy method
• electromagnetic exploration
• dual method
• magnetic circuit
• six-lumped capacitance method
• finite element analysis
• FEA
• L-C-T design
• inductor-capacitor-transformer design
• power 40.0 kW