A New High-Gain DC-DC Converter with Continuous Input Current for DC Microgrid Applications

The growth of renewable energy in the last two decades has led to the development of new power electronic converters. The DC microgrid can operate in standalone mode, or it can be grid-connected. A DC microgrid consists of various distributed generation (DG) units like solar PV arrays, fuel cells, ultracapacitors, and microturbines. The DC-DC converter plays an important role in boosting the output voltage in DC microgrids. DC-DC converters are needed to boost the output voltage so that a common voltage from different sources is available at the DC link. A conventional boost converter (CBC) suffers from the problem of limited voltage gain, and the stress across the switch is usually equal to the output voltage. The output from DG sources is low and requires high-gain boost converters to enhance the output voltage. In this paper, a new high-gain DC-DC converter with quadratic voltage gain and reduced voltage stress across switching devices was proposed. The proposed converter was an improvement over the CBC and quadratic boost converter (QBC). The converter utilized only two switched inductors, two capacitors, and two switches to achieve the gain. The converter was compared with other recently developed topologies in terms of stress, the number of passive components, and voltage stress across switching devices. The loss analysis also was done using the Piecewise Linear Electrical Circuit Simulation (PLCES). The experimental and theoretical analyses closely agreed with each other.

[1]  Mahajan Sagar Bhaskar,et al.  Interleaved Multilevel Boost Converter With Minimal Voltage Multiplier Components for High-Voltage Step-Up Applications , 2020, IEEE Transactions on Power Electronics.

[2]  Janusz A. Starzyk,et al.  A DC-DC charge pump design based on voltage doublers , 2001 .

[3]  Telles B. Lazzarin,et al.  High Step-Up DC-DC Converter Using Built-In Transformer Voltage Multiplier Cell and Dual Boost Concepts , 2021, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[4]  Juan Miguel González-Lopez,et al.  A Transformer-less High-Gain Boost Converter With Input Current Ripple Cancelation at a Selectable Duty Cycle , 2013, IEEE Transactions on Industrial Electronics.

[5]  Mohammad Zaid,et al.  Improved Dual Switch Non-Isolated High Gain Boost Converter for DC microgrid Application , 2021, 2021 IEEE Texas Power and Energy Conference (TPEC).

[6]  Junyun Deng,et al.  A ZVS Three-Port DC/DC Converter for High-Voltage Bus-Based Photovoltaic Systems , 2019, IEEE Transactions on Power Electronics.

[7]  A. Sarwar,et al.  A Transformerless Quadratic Boost High Gain DC-DC Converter , 2020, 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[8]  Adil Sarwar,et al.  A Non-Inverting High Gain DC-DC Converter With Continuous Input Current , 2021, IEEE Access.

[9]  Mohamad Reza Banaei,et al.  Analysis and Implementation of a New SEPIC-Based Single-Switch Buck–Boost DC–DC Converter With Continuous Input Current , 2018, IEEE Transactions on Power Electronics.

[10]  Mehdi Ferdowsi,et al.  A Family of Scalable Non-Isolated Interleaved DC-DC Boost Converters With Voltage Multiplier Cells , 2019, IEEE Access.

[11]  Ebrahim Babaei,et al.  Extendable Nonisolated High Gain DC–DC Converter Based on Active–Passive Inductor Cells , 2018, IEEE Transactions on Industrial Electronics.

[12]  S. Hemamalini,et al.  Nonisolated High Gain DC–DC Converter for DC Microgrids , 2018, IEEE Transactions on Industrial Electronics.

[13]  A. Sarwar,et al.  A New Transformerless Quadratic Boost Converter with High Voltage Gain , 2020 .

[14]  A. Andrade,et al.  Hybrid High Voltage Gain Transformerless DC–DC Converter , 2022, IEEE transactions on industrial electronics (1982. Print).

[15]  S. Saravanan,et al.  Design and Development of Single Switch High Step-Up DC–DC Converter , 2018, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[16]  Mohammad Zaid,et al.  A Single Switch High Gain DC-DC converter with Reduced Voltage Stress , 2020, 2020 IEEE 7th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON).

[17]  Mehran Ektesabi,et al.  Non‐isolated buck–boost dc–dc converter with quadratic voltage gain ratio , 2019, IET Power Electronics.

[18]  Gun-Woo Moon,et al.  Nonisolated High Step-up Boost Converter Integrated With Sepic Converter , 2010, IEEE Transactions on Power Electronics.

[19]  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.

[20]  K. Sundaramoorthy,et al.  Non-Isolated n-Stage High Step-up DC-DC Converter for Low Voltage DC Source Integration , 2021, IEEE transactions on energy conversion.

[21]  Tan-Tai Tran,et al.  Transformerless High Step-Up DC-DC Converters with Switched-Capacitor Network , 2019 .

[22]  Yao Liu,et al.  A New Hybrid Boosting Converter for Renewable Energy Applications , 2016, IEEE Transactions on Power Electronics.

[23]  S Dwari,et al.  An Efficient High-Step-Up Interleaved DC–DC Converter With a Common Active Clamp , 2011, IEEE Transactions on Power Electronics.

[24]  F. Blaabjerg,et al.  A High Voltage Gain DC–DC Converter Based on Three Winding Coupled Inductor and Voltage Multiplier Cell , 2020, IEEE Transactions on Power Electronics.

[25]  Gheorghe-Daniel Andreescu,et al.  Bidirectional Power Flow Control in a DC Microgrid Through a Switched-Capacitor Cell Hybrid DC–DC Converter , 2017, IEEE Transactions on Industrial Electronics.

[26]  Hyun-Lark Do,et al.  Quadratic Boost DC–DC Converter With High Voltage Gain and Reduced Voltage Stresses , 2019, IEEE Transactions on Power Electronics.

[27]  Ebrahim Babaei,et al.  Voltage-Lift Technique Based Nonisolated Boost DC–DC Converter: Analysis and Design , 2018, IEEE Transactions on Power Electronics.

[28]  Frede Blaabjerg,et al.  An original transformer and switched-capacitor (T & SC)-based extension for DC-DC boost converter for high-voltage/low-current renewable energy applications: Hardware implementation of a new T & SC boost converter , 2018 .

[29]  Fang Lin Luo,et al.  Positive output multiple-lift push-pull switched-capacitor Luo-converters , 2004, IEEE Transactions on Industrial Electronics.

[30]  Jesus Leyva-Ramos,et al.  Switching regulator using a quadratic boost converter for wide DC conversion ratios , 2009 .

[31]  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.

[32]  Atif Iqbal,et al.  A New Structure of High Voltage Gain SEPIC Converter for Renewable Energy Applications , 2019, IEEE Access.

[33]  Yao Zhang,et al.  An Interleaved Zero-Voltage Zero-Current Switching High Step-Up DC-DC Converter , 2021, IEEE Access.

[34]  Fernando Lessa Tofoli,et al.  Survey on non-isolated high-voltage step-up dc–dc topologies based on the boost converter , 2015 .