TY - JOUR
T1 - Ultra-large gain step-up switched-capacitor DC-DC converter with coupled inductor for alternative sources of energy
AU - Liang, Tsorng Juu
AU - Chen, Shih Ming
AU - Yang, Lung Sheng
AU - Chen, Jiann Fuh
AU - Ioinovici, Adrian
N1 - Funding Information:
Manuscript received January 21, 2011; revised April 25, 2011, July 03, 2011; accepted August 15, 2011. Date of current version March 28, 2012. This work was supported by the National Science Council of Taiwan under Project NSC 98-2221-E-006-247-MY3 and 99-2220-E-006-006-. This paper was recommended by Associate Editor E. Alarcon.
PY - 2012
Y1 - 2012
N2 - An ultra-large voltage conversion ratio converter is proposed by integrating a switched-capacitor circuit with a coupled inductor technology. The proposed converter can be seen as an equivalent parallel connection to the load of a basic boost converter and a number of forward converters, each one containing a switched-capacitor circuit. All the stages are activated by the boost switch. A single active switch is required, with no need of extreme duty-ratio values. The leakage energy of the coupled inductor is recycled to the load. The inrush current problem of switched capacitors is restrained by the leakage inductance of the coupled-inductor. The above features are the reason for the high efficiency performance. The operating principles and steady state analyses of continuous, discontinuous and boundary conduction modes are discussed in detail. To verify the performance of the proposed converter, a 200 W/20 V to 400 V prototype was implemented. The maximum measured efficiency is 96.4%. The full load efficiency is 95.1%.
AB - An ultra-large voltage conversion ratio converter is proposed by integrating a switched-capacitor circuit with a coupled inductor technology. The proposed converter can be seen as an equivalent parallel connection to the load of a basic boost converter and a number of forward converters, each one containing a switched-capacitor circuit. All the stages are activated by the boost switch. A single active switch is required, with no need of extreme duty-ratio values. The leakage energy of the coupled inductor is recycled to the load. The inrush current problem of switched capacitors is restrained by the leakage inductance of the coupled-inductor. The above features are the reason for the high efficiency performance. The operating principles and steady state analyses of continuous, discontinuous and boundary conduction modes are discussed in detail. To verify the performance of the proposed converter, a 200 W/20 V to 400 V prototype was implemented. The maximum measured efficiency is 96.4%. The full load efficiency is 95.1%.
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U2 - 10.1109/TCSI.2011.2169886
DO - 10.1109/TCSI.2011.2169886
M3 - Article
AN - SCOPUS:84859715456
SN - 1057-7122
VL - 59
SP - 864
EP - 874
JO - IEEE Transactions on Circuits and Systems I: Regular Papers
JF - IEEE Transactions on Circuits and Systems I: Regular Papers
IS - 4
M1 - 6174511
ER -