High step-up voltage-doubling DC-DC converter with coupled inductors

In this paper, a novel high step-up DC-DC converter is presented. The proposed topology is composed by a nonlinear-gain boost converter with two coupled inductors and integrated with two voltage-doubler circuits to accomplish high step-up voltage ratio. In addition, the energy stored in leakage inductance can be retrieved during switch-off period. Moreover, the voltage across the switch is effectively clamped under a lower voltage rating and therefore a low on-resistance power switch can be adopted to reduce the conduction loss. Attributing to the above-mentioned merits, the conversion efficiency can be apparently improved. Finally, a novel high step-up DC-DC converter with 18~26 V input voltage, 400 V output voltage and 200 W output power is implemented to verify the proposed topology.

[1]  Xuefeng Hu,et al.  A High Voltage Gain DC–DC Converter Integrating Coupled-Inductor and Diode–Capacitor Techniques , 2014, IEEE Transactions on Power Electronics.

[2]  Ching-Shan Leu,et al.  A Novel Current-Fed Boost Converter With Ripple Reduction for High-Voltage Conversion Applications , 2010, IEEE Transactions on Industrial Electronics.

[3]  Adrian Ioinovici,et al.  Ultra-Large Gain Step-Up Switched-Capacitor DC-DC Converter With Coupled Inductor for Alternative Sources of Energy , 2012, IEEE Transactions on Circuits and Systems I: Regular Papers.

[4]  Tae-Jin Kim,et al.  High boost converter using voltage multiplier , 2005, 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005..

[5]  Rong-Jong Wai,et al.  High-Efficiency DC-DC Converter With High Voltage Gain and Reduced Switch Stress , 2007, IEEE Transactions on Industrial Electronics.

[6]  Xu Yang,et al.  Analysis and Design of a High Step-up Current-Fed Multiresonant DC–DC Converter With Low Circulating Energy and Zero-Current Switching for All Active Switches , 2012, IEEE Transactions on Industrial Electronics.

[7]  Yu Tang,et al.  A Switched-Capacitor-Based Active-Network Converter With High Voltage Gain , 2014, IEEE Transactions on Power Electronics.

[8]  Prasad N. Enjeti,et al.  Design of a wide input range DC-DC converter with a robust power control scheme suitable for fuel cell power conversion , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[9]  O. Cornea,et al.  Comparative study of buck and hybrid buck “switched-inductor” DC-DC converters , 2012, 2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM).

[10]  Pin-Yu Huang,et al.  A Novel Dual-Inductor Boost Converter With Ripple Cancellation for High-Voltage-Gain Applications , 2011, IEEE Transactions on Industrial Electronics.

[11]  Pin-Yu Huang,et al.  A novel voltage doubler rectifier for high output voltage applications , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.