Title :
A LLC-Type Dual-Bridge Resonant Converter: Analysis, Design, Simulation, and Experimental Results
Author_Institution :
Fac. of Inf. Technol., Macau Univ. of Sci. & Technol., Taipa, China
Abstract :
In this paper, a high-frequency isolated dual-bridge LLC -type resonant converter is proposed. The steady-state analysis of the proposed converter is performed using a modified fundamental harmonics approximation approach, by which the component stress can be obtained quickly without complicated calculation. Necessary and sufficient conditions for zero-voltage switching of all switches are derived too. To illustrate the usefulness of the FHA analysis for a fast design, a design example of a 100 kHz, 200 V input, 40-48 V output 300 W converter is given. Computer simulation and experiment results are included for the purpose of validation. It is shown that this converter is able to maintain zero-voltage switching operation for a wide load range while keeping high efficiency.
Keywords :
resonant power convertors; zero voltage switching; FHA analysis; LLC-type resonant converter; ZVS; component stress; computer simulation; frequency 100 kHz; high-frequency isolated dual-bridge converter; modified fundamental harmonics approximation approach; power 300 W; steady-state analysis; voltage 200 V; voltage 40 V to 48 V; zero-voltage switching operation; Bridge circuits; Hafnium; Harmonic analysis; Steady-state; Switches; Switching frequency; Zero voltage switching; Dc-to-dc converter; resonant power conversion; zero-voltage switching (ZVS);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2013.2291207
