TY - GEN
T1 - A Hybrid Step-up DC-DC Converter based on Ladder Switched-capacitor and High-frequency Transformer
AU - Dong, Qinqin
AU - Fu, Yu
AU - Liu, Shanwei
AU - Li, Shouxiang
AU - Zhang, Guoju
N1 - Publisher Copyright:
© 2022 IEEJ-IAS.
PY - 2022
Y1 - 2022
N2 - In this paper, a hybrid step-up DC-DC converter based on Ladder switched-capacitor and high-frequency (HF) transformer is proposed. Based on the traditional 3X Ladder switched-capacitor converter (SCC), one active switch is replaced by the secondary winding of the HF transformer, while the other active switch is substituted by a diode. Besides, the primary side circuit is constructed by one active switch and the primary winding of the HF transformer. Compared with the traditional Ladder SCC, the novel hybrid converter has the merits of high step-up gain, wide voltage-gain variation range, low component counts and electrical isolation, making it suitable for renewable energy harvesting system. A comprehensive analysis of operation principle, voltage gain expression, boundary condition and small signal model is given. A 36.3V~69.5V to 400V open-loop prototype with output power of 80W~120W was designed, built and tested to verify the theoretical analysis.
AB - In this paper, a hybrid step-up DC-DC converter based on Ladder switched-capacitor and high-frequency (HF) transformer is proposed. Based on the traditional 3X Ladder switched-capacitor converter (SCC), one active switch is replaced by the secondary winding of the HF transformer, while the other active switch is substituted by a diode. Besides, the primary side circuit is constructed by one active switch and the primary winding of the HF transformer. Compared with the traditional Ladder SCC, the novel hybrid converter has the merits of high step-up gain, wide voltage-gain variation range, low component counts and electrical isolation, making it suitable for renewable energy harvesting system. A comprehensive analysis of operation principle, voltage gain expression, boundary condition and small signal model is given. A 36.3V~69.5V to 400V open-loop prototype with output power of 80W~120W was designed, built and tested to verify the theoretical analysis.
KW - DC-DC converter
KW - high-frequency transformer
KW - switched-capacitor
UR - http://www.scopus.com/inward/record.url?scp=85134197800&partnerID=8YFLogxK
U2 - 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807149
DO - 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807149
M3 - Conference contribution
AN - SCOPUS:85134197800
T3 - 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia
SP - 2636
EP - 2640
BT - 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia
Y2 - 15 May 2022 through 19 May 2022
ER -
