TY - JOUR
T1 - Quadratic Boost DC-DC Converter with High Voltage Gain and Reduced Voltage Stresses
AU - Lee, Sin Woo
AU - Do, Hyun Lark
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2019/3
Y1 - 2019/3
N2 - This paper proposes a quadratic boost dc-dc converter with a high voltage gain and reduced voltage stresses. The conventional quadratic boost converter has a limited voltage gain, which is not suitable for high-step-up applications with various microgrids. In the proposed converter, to improve the voltage gain beyond that of a quadratic converter, a coupled inductor is adopted. Additionally, passive clamping circuits are applied to reduce the high voltage stresses caused by leakage inductance of the coupled inductor. Hence, additional power losses from the snubber circuit do not occur, and low-voltage-rating switching devices can be utilized for the main switch and output diode. Moreover, the reverse-recovery problem of the output diode can be alleviated by the leakage inductance. Therefore, the total power efficiency is improved. The theoretical analysis of the proposed converter is verified with a 300-V, 120-W prototype.
AB - This paper proposes a quadratic boost dc-dc converter with a high voltage gain and reduced voltage stresses. The conventional quadratic boost converter has a limited voltage gain, which is not suitable for high-step-up applications with various microgrids. In the proposed converter, to improve the voltage gain beyond that of a quadratic converter, a coupled inductor is adopted. Additionally, passive clamping circuits are applied to reduce the high voltage stresses caused by leakage inductance of the coupled inductor. Hence, additional power losses from the snubber circuit do not occur, and low-voltage-rating switching devices can be utilized for the main switch and output diode. Moreover, the reverse-recovery problem of the output diode can be alleviated by the leakage inductance. Therefore, the total power efficiency is improved. The theoretical analysis of the proposed converter is verified with a 300-V, 120-W prototype.
KW - Clamping circuit
KW - coupled inductor
KW - high-step-up converter
KW - quadratic boost converter
UR - https://www.scopus.com/pages/publications/85047811315
U2 - 10.1109/TPEL.2018.2842051
DO - 10.1109/TPEL.2018.2842051
M3 - Article
AN - SCOPUS:85047811315
SN - 0885-8993
VL - 34
SP - 2397
EP - 2404
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 3
M1 - 8369098
ER -
