Forward-Based High Step-Up DC–DC Converter with Input Current Sharing and Output Filter Reduction: Design, Modeling, and Control

AbstractThis paper presents a DC–DC converter capable of dealing with low-voltage and high-input current sources. The proposed topology is based on Forward converters with inputs connected in parallel and outputs connected in series. This configuration allows a natural sharing of the input current and provides high static gain to the converter. The phase-shift modulation is applied to reduce size and volume of the single output filter presented at the topology. The study carried out in this work includes the converter operation stages, equation, theoretical waveforms, and modeling. In addition, experimental results performed from a 1-kW prototype are presented and discussed in order to validate the proposed converter operation in closed loop.

[1]  Milan M. Jovanovic,et al.  Analysis and evaluation of interleaving techniques in forward converters , 1998 .

[2]  Roberto Francisco Coelho,et al.  Grid-connected PV-wind-fuel cell hybrid system employing a supercapacitor bank as storage device to supply a critical DC load , 2011, 2011 IEEE 33rd International Telecommunications Energy Conference (INTELEC).

[3]  James Larminie,et al.  Fuel Cell Systems Explained , 2000 .

[4]  Linbing Wang Input-Parallel and Output-Series Modular DC-DC Converters with One Common Filter , 2007, EUROCON 2007 - The International Conference on "Computer as a Tool".

[5]  Robert W. Erickson,et al.  Fundamentals of Power Electronics , 2001 .

[6]  Xiaozhong Liao,et al.  A General Control Strategy for Input-Series–Output-Series Modular DC–DC Converters , 2014, IEEE Transactions on Power Electronics.

[7]  Zhiqiang Guo,et al.  Digital Control Strategy for Input-Series-Output-Parallel Modular DC/DC Converters , 2010 .

[8]  R. Demonti,et al.  Photovoltaic energy processing for utility connected system , 2001, IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243).

[9]  K. Agbossou,et al.  Optimal hydrogen production in a stand-alone renewable energy system , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[10]  B. Davat,et al.  Design of a High Power, High Step-Up Non-isolated DC-DC Converter for Fuel Cell applications , 2006, 2006 IEEE Vehicle Power and Propulsion Conference.

[11]  Roberto F. Coelho,et al.  High step-up DC-DC converter with input current sharing for fuel cell applications , 2015, 2015 IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

[12]  Chao-Ming Huang,et al.  Interleaved high step-up DC-DC converter with parallel-input series-output configuration and voltage multiplier module , 2017, 2017 IEEE International Conference on Industrial Technology (ICIT).

[13]  Kazem Mazlumi,et al.  Modeling of a hybrid power system for economic analysis and environmental impact in HOMER , 2010, 2010 18th Iranian Conference on Electrical Engineering.

[14]  K. Smedley,et al.  Analysis and Design of Forward Converter With Energy Regenerative Snubber , 2010, IEEE Transactions on Power Electronics.

[15]  Frede Blaabjerg,et al.  Step-Up DC–DC Converters: A Comprehensive Review of Voltage-Boosting Techniques, Topologies, and Applications , 2017, IEEE Transactions on Power Electronics.

[16]  Xiangning He,et al.  Common-Duty-Ratio Control of Input-Parallel Output-Parallel (IPOP) Connected DC–DC Converter Modules With Automatic Sharing of Currents , 2012, IEEE Transactions on Power Electronics.

[17]  K. Agbossou,et al.  Energy management of hydrogen-based stand-alone renewable energy system by using boost and buck converters , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..