TY - JOUR
T1 - Soft-switching step-up converter with ripple-free output current
AU - Kim, Se Jin
AU - Do, Hyun Lark
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/8
Y1 - 2016/8
N2 - A soft-switching step-up converter with ripple-free output current is proposed. This converter is based on a voltage-boosting converter, named KY converter. Thus, the proposed converter has features of KY converter such as clamped switch voltage stresses to input voltage, nonpulsating output current and fast transient response. In addition, by utilizing an auxiliary circuit, the zero-voltage-switching (ZVS) of power switches is achieved. Therefore, the switching loss is reduced and the system efficiency is improved. Moreover, the auxiliary circuit cancels out the filter inductor current ripple. Then, ripple-free output current is achieved. The operational principle and a steady-state analysis of the proposed converter are provided in detail. In order to verify the theoretical analysis, experimental results based on a 60 W prototype at a constant switching frequency of 200 kHz are presented.
AB - A soft-switching step-up converter with ripple-free output current is proposed. This converter is based on a voltage-boosting converter, named KY converter. Thus, the proposed converter has features of KY converter such as clamped switch voltage stresses to input voltage, nonpulsating output current and fast transient response. In addition, by utilizing an auxiliary circuit, the zero-voltage-switching (ZVS) of power switches is achieved. Therefore, the switching loss is reduced and the system efficiency is improved. Moreover, the auxiliary circuit cancels out the filter inductor current ripple. Then, ripple-free output current is achieved. The operational principle and a steady-state analysis of the proposed converter are provided in detail. In order to verify the theoretical analysis, experimental results based on a 60 W prototype at a constant switching frequency of 200 kHz are presented.
KW - KY converter
KW - ripple free
KW - soft-switching
KW - step-up converter
UR - http://www.scopus.com/inward/record.url?scp=84963969078&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2015.2493148
DO - 10.1109/TPEL.2015.2493148
M3 - Article
AN - SCOPUS:84963969078
SN - 0885-8993
VL - 31
SP - 5618
EP - 5624
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 8
M1 - 7302602
ER -