ANALYSIS AND DESIGN OF A 3-PHASE LCC-TYPE RESONANT CONVERTER

A three-phase dc-to-dc LCC-type resonant converter with high-frequency transformer isolation is proposed. The operation and a simple analysi s of the converter are presented. Design curves are obtained and a des ign example is given. SPICE simulation and experimental results are pr esented to verify the performance of the proposed converter for varyin g load conditions. The converter proposed has several advantages, e.g. , operation in lagging PF mode for the entire load range, requires a n arrow variation required in switching frequency, reduced component siz e and stresses, etc.