Title :
A ZVS Bi-Directional DC–DC Converter for Multiple Energy Storage Elements
Author :
Liu, Danwei ; Li, Hui
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida State Univ., Tallahassee, FL
Abstract :
This letter presents a high-power-density multi-input dc-dc converter interfaced with energy storage elements such as a battery and an ultracapacitor. The converter consists of three half-bridges and a high-frequency multi-winding transformer. Bi-directional power flow between input and output is achieved by adjusting the phase-shift angles of the voltages across the two sides of the transformer. Soft-switching is implemented naturally by snubber capacitors and transformer leakage inductance. Operation principles are analyzed in detail. Simulation and experimental results are provided to verify the performance of the proposed converter
Keywords :
DC-DC power convertors; bridge circuits; capacitors; energy storage; high-frequency transformers; load flow; snubbers; switching convertors; zero current switching; zero voltage switching; ZVS; battery; bidirectional DC-DC converter; bidirectional power flow; half-bridges; high-frequency multiwinding transformer; high-power-density multiinput dc-dc converter; multiple energy storage elements; snubber capacitors; soft-switching; transformer leakage inductance; ultracapacitors; Batteries; Bidirectional control; Capacitors; DC-DC power converters; Energy storage; Inductance; Load flow; Snubbers; Supercapacitors; Zero voltage switching; Bi-directional power flow; energy storage elements; multi-input converter; soft-switching;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2006.882450
