Title :
A 13 kW high frequency FB ZVS DC-DC converter with additional capacitors
Author :
Kim, Eun-Soo ; Joe, Kee-yeon ; Kye, Moon-Hoo ; Koo, Heon-Hoi
Author_Institution :
Power Electron. Div., Korea Electrotechnol. Res. Inst., Changwon, South Korea
Abstract :
The conventional phase-shifted zero-voltage-switching (ZVS) DC-DC power converter is applied to many power supplies in order to reduce the voltage and current stresses of the main switching devices. The ZVS method needs a fairly large leakage inductance in the primary side of the high frequency power transformer to obtain good ZVS characteristics. Large leakage inductance results in several defects-small effective duty, high primary current and low efficiency etc. The proposed ZVS topology can obtain almost the same ZVS characteristics even though the circuit has small leakage inductance. The proposed ZVS full-bridge (FB) DC-DC power converter unit of 13 kW (125 V, 100 A)/30 kHz for a battery charger was designed, verified experimentally and applied to real unit. This paper includes its operating sequence, simulation and experimental results
Keywords :
DC-DC power convertors; PWM power convertors; bipolar transistor switches; bridge circuits; high-frequency transformers; insulated gate bipolar transistors; power bipolar transistors; power semiconductor switches; power transformers; switching circuits; 100 A; 125 V; 13 kW; 30 kHz; ZVS DC-DC power converter; ZVS characteristics; battery charger; effective duty; efficiency; full-bridge; high frequency power transformer; leakage inductance; primary current; Batteries; Circuit simulation; Circuit topology; DC-DC power converters; Frequency conversion; Inductance; Power supplies; Power transformers; Stress; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-3044-7
DOI :
10.1109/APEC.1996.500486
