TY - GEN
T1 - A New Zero-Voltage Switching Three-Level Converter with Reduced Rectifier Voltage Stress
AU - Kim, Keon Woo
AU - Lim, Cheon Yong
AU - Kim, Dong Kwan
AU - Jang, Yu Jin
AU - Moon, Gun Woo
N1 - Publisher Copyright:
© 2018 IEEJ Industry Application Society.
PY - 2018/10/22
Y1 - 2018/10/22
N2 - Three-level converters are an attractive structure when the high input voltage is required. Although the voltage stress of switches in the three-level converter becomes half of the input voltage, zero-voltage switching cannot be achieved at light load conditions, which degrades the light load efficiency. This paper proposes a new three-level converter with achieving zero-voltage switching over entire load conditions. In addition, in the proposed converter, the voltage stress of rectifier diodes is low, leading to a reduction of conduction loss in the rectifier circuit. Therefore, by reducing the switching losses in primary switches, light load efficiency increases, and by decreasing the conduction loss in the rectifier circuit, heavy load efficiency is improved. The proposed converter is tested by the prototype with 540-600 VDC input and 750W (48 V/15.625 A) output.
AB - Three-level converters are an attractive structure when the high input voltage is required. Although the voltage stress of switches in the three-level converter becomes half of the input voltage, zero-voltage switching cannot be achieved at light load conditions, which degrades the light load efficiency. This paper proposes a new three-level converter with achieving zero-voltage switching over entire load conditions. In addition, in the proposed converter, the voltage stress of rectifier diodes is low, leading to a reduction of conduction loss in the rectifier circuit. Therefore, by reducing the switching losses in primary switches, light load efficiency increases, and by decreasing the conduction loss in the rectifier circuit, heavy load efficiency is improved. The proposed converter is tested by the prototype with 540-600 VDC input and 750W (48 V/15.625 A) output.
UR - https://www.scopus.com/pages/publications/85057340936
U2 - 10.23919/IPEC.2018.8507902
DO - 10.23919/IPEC.2018.8507902
M3 - Conference paper
AN - SCOPUS:85057340936
T3 - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
SP - 1655
EP - 1660
BT - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Y2 - 20 May 2018 through 24 May 2018
ER -