Title :
High-efficiency ultracapacitor charger using a soft-switching full-bridge DC-DC converter
Author :
Min-Kwon Yang ; Hyoung-Sup Cho ; Seung-Jae Lee ; Woo-Young Choi
Author_Institution :
Div. of Electron. Eng., Chonbuk Nat. Univ., Jeonju, South Korea
Abstract :
This paper proposes a high-efficiency ultracapacitor charger using a soft-switching full-bridge pulse-width modulated (PWM) converter. Conventional full-bridge phase-shift modulated (PSM) converter is used for charging ultracapacitors. However, the power efficiency of conventional converters is low because of its circulating current and high output diode voltage stresses. This study presents a high-efficiency full-bridge PWM converter to overcome the drawbacks of conventional converters. The proposed converter has the advantages of lower switch voltage stresses and reduced circulating current compared to other converter topologies. The performance of the proposed converter is evaluated by experimental results for a 54-V, 35-F ultracapacitor bank.
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; supercapacitors; switching convertors; zero current switching; zero voltage switching; capacitance 35 F; high output diode voltage stress; high-efficiency ultracapacitor charger; pulse width modulated converter; soft switching full-bridge PWM DC-DC converter; voltage 54 V; Batteries; Inductors; Stress; Supercapacitors; Switches; Voltage control; Voltage measurement;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE
Conference_Location :
Charlotte, NC
DOI :
10.1109/APEC.2015.7104630
