A Novel High Step-up DC/DC Converter Based on Integrating Coupled Inductor and Switched-Capacitor Techniques for Renewable Energy Applications

In this paper, a novel high step-up dc/dc converter is presented for renewable energy applications. The suggested structure consists of a coupled inductor and two voltage multiplier cells, in order to obtain high step-up voltage gain. In addition, two capacitors are charged during the switch-off period, using the energy stored in the coupled inductor which increases the voltage transfer gain. The energy stored in the leakage inductance is recycled with the use of a passive clamp circuit. The voltage stress on the main power switch is also reduced in the proposed topology. Therefore, a main power switch with low resistance RDS (ON) can be used to reduce the conduction losses. The operation principle and the steady-state analyses are discussed thoroughly. To verify the performance of the presented converter, a 300-W laboratory prototype circuit is implemented. The results validate the theoretical analyses and the practicability of the presented high step-up converter.

[1]  A. Agarwal,et al.  Assessing the Impact of SiC MOSFETs on Converter Interfaces for Distributed Energy Resources , 2009, IEEE Transactions on Power Electronics.

[2]  Jiann-Fuh Chen,et al.  Novel High Step-Up DC–DC Converter With Coupled-Inductor and Switched-Capacitor Techniques , 2012, IEEE Transactions on Industrial Electronics.

[3]  Wei Qian,et al.  A Switched-Capacitor DC–DC Converter With High Voltage Gain and Reduced Component Rating and Count , 2012, IEEE Transactions on Industry Applications.

[4]  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.

[5]  Jiann-Fuh Chen,et al.  Analysis and implementation of a novel single-switch high step-up DC-DC converter , 2012 .

[6]  Kuo-Ching Tseng,et al.  High Step-Up High-Efficiency Interleaved Converter With Voltage Multiplier Module for Renewable Energy System , 2014, IEEE Transactions on Industrial Electronics.

[7]  Yaow-Ming Chen,et al.  Modeling and Controller Design of an Autonomous PV Module for DMPPT PV Systems , 2014, IEEE Transactions on Power Electronics.

[8]  Kuo-Ing Hwu,et al.  Voltage Gain Enhancement for a Step-Up Converter Constructed by KY and Buck-Boost Converters , 2014, IEEE Transactions on Industrial Electronics.

[9]  Jiann-Fuh Chen,et al.  Novel High Step-Up DC–DC Converter for Distributed Generation System , 2013, IEEE Transactions on Industrial Electronics.

[10]  F. Luo,et al.  Positive output super-lift converters , 2003 .

[11]  Dragan Maksimovic,et al.  Performance of Mismatched PV Systems With Submodule Integrated Converters , 2014, IEEE Journal of Photovoltaics.

[12]  Yung-Ruei Chang,et al.  High-Efficiency Power Conversion System for Kilowatt-Level Stand-Alone Generation Unit With Low Input Voltage , 2008, IEEE Transactions on Industrial Electronics.

[13]  Yi Zhao,et al.  Single-Phase High Step-up Converter With Improved Multiplier Cell Suitable for Half-Bridge-Based PV Inverter System , 2014, IEEE Transactions on Power Electronics.

[14]  Jian-Hsieng Lee,et al.  Isolated Coupled-Inductor-Integrated DC–DC Converter With Nondissipative Snubber for Solar Energy Applications , 2014, IEEE Transactions on Industrial Electronics.

[15]  I. Laird,et al.  High Step-Up DC/DC Topology and MPPT Algorithm for Use With a Thermoelectric Generator , 2013, IEEE Transactions on Power Electronics.

[16]  Tsorng-Juu Liang,et al.  Novel High Step-Up DC–DC Converter for Fuel Cell Energy Conversion System , 2010, IEEE Transactions on Industrial Electronics.

[17]  Y. Berkovich,et al.  Switched Coupled-Inductor Cell for DC-DC Converters with Very Large Conversion Ratio , 2011, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[18]  Jiann-Fuh Chen,et al.  A Novel High Step-Up DC–DC Converter for a Microgrid System , 2011, IEEE Transactions on Power Electronics.

[19]  Wuhua Li,et al.  High Step-Up Interleaved Converter With Built-In Transformer Voltage Multiplier Cells for Sustainable Energy Applications , 2014, IEEE Transactions on Power Electronics.

[20]  Jiann-Fuh Chen,et al.  Transformerless DC–DC Converters With High Step-Up Voltage Gain , 2009, IEEE Transactions on Industrial Electronics.

[21]  Tsorng-Juu Liang,et al.  Novel High Step-Up DC–DC Converter With Coupled-Inductor and Voltage-Doubler Circuits , 2011, IEEE Transactions on Industrial Electronics.

[22]  Rong-Jong Wai,et al.  High-Efficiency Single-Input Multiple-Output DC–DC Converter , 2013, IEEE Transactions on Power Electronics.

[23]  Jiann-Fuh Chen,et al.  Novel Isolated High-Step-Up DC–DC Converter With Voltage Lift , 2013, IEEE Transactions on Industrial Electronics.

[24]  Adrian Ioinovici Power Electronics and Energy Conversion Systems, Fundamentals and Hard-switching Converters , 2013 .

[25]  Yaow-Ming Chen,et al.  Boost Converter with Coupled Inductors and Buck-Boost Type of Active Clamp , 2005 .

[26]  Yong Zhao,et al.  High step-up boost converter with passive lossless clamp circuit for non-isolated high step-up applications , 2011 .

[27]  Chia-Ling Wei,et al.  Design of a Switched-Capacitor DC-DC Converter With a Wide Input Voltage Range , 2013, IEEE Transactions on Circuits and Systems I: Regular Papers.

[28]  M. Sabahi,et al.  Modeling and Control of a New Three-Input DC–DC Boost Converter for Hybrid PV/FC/Battery Power System , 2012, IEEE Transactions on Power Electronics.

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