A Two-Phase Interleaved High-Voltage Gain DC-DC Converter with Coupled Inductor and Built-in Transformer for Photovoltaic Applications

This paper presents a two-phase interleaved high-voltage gain DC-DC converter for photovoltaic (PV) energy harvesting. Utilizing double two-winding coupled inductors (CIs) and a two-winding built-in transformer (BIT) with switched-capacitor (SC) cells, the proposed converter achieves higher voltage gains than the similar converters in the previous studies. In addition, a continuous input current with the reduced ripple and low current stresses on the components are obtained due to the interleaved configuration of the converter. Furthermore, thanks to the reduced voltage stresses of the switches, low-voltage-rated MOSFETs with low RDS(on) are selected, which helps to reduce conduction losses. Moreover, a resistor-capacitor-diode (RCD) snubber is considered to absorb the energy of the leakage inductances of the CIs. Also, the reverse-recovery problem of the diodes is solved by the leakage inductances that provide zero-current switching (ZCS) turn-off for the diodes. The operating modes and steady-state analysis of the proposed converter are presented. In addition, a performance comparison is carried out, and a 200 W converter with a voltage gain of 25 and output voltage of 400 V is simulated in PLECS Blockset to prove the effectiveness and validity of the proposed converter.

[1]  Ramin Rahimi,et al.  A Coupled Inductor-Based Dual-Switch High Step-up DC-DC Converter with Common Ground , 2021, IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society.

[2]  Ramin Rahimi,et al.  A Three-Winding Coupled Inductor-Based Interleaved High-Voltage Gain DC–DC Converter for Photovoltaic Systems , 2021, IEEE Transactions on Power Electronics.

[3]  Ramin Rahimi,et al.  A High Step-Up Z-Source DC-DC Converter for Integration of Photovoltaic Panels into DC Microgrid , 2021, 2021 IEEE Applied Power Electronics Conference and Exposition (APEC).

[4]  Mehdi Ferdowsi,et al.  Efficiency Assessment of a Residential DC Nanogrid with Low and High Distribution Voltages Using Realistic Data , 2021, 2021 IEEE Green Technologies Conference (GreenTech).

[5]  Ramin Rahimi,et al.  An Interleaved High Step-Up DC-DC Converter Based on Combination of Coupled Inductor and Built-in Transformer for Photovoltaic-Grid Electric Vehicle DC Fast Charging Systems , 2021, 2021 IEEE Texas Power and Energy Conference (TPEC).

[6]  Ramin Rahimi,et al.  A Dual-Switch Coupled Inductor-Based High Step- Up DC-DC Converter for Photovoltaic-Based Renewable Energy Applications , 2021, 2021 IEEE Texas Power and Energy Conference (TPEC).

[7]  Tohid Nouri,et al.  A Novel High Step-Up High Efficiency Interleaved DC–DC Converter With Coupled Inductor and Built-In Transformer for Renewable Energy Systems , 2020, IEEE Transactions on Industrial Electronics.

[8]  T. Nouri,et al.  A Novel ZVS High-Step-Up Converter With Built-In Transformer Voltage Multiplier Cell , 2020, IEEE Transactions on Power Electronics.

[9]  Ramin Rahimi,et al.  Filter-Clamped Two-Level Three-Phase Transformerless Grid-Connected Photovoltaic Inverter for Leakage Current Reduction , 2020, 2020 IEEE Kansas Power and Energy Conference (KPEC).

[10]  Roy A. McCann,et al.  A High Voltage Ratio Three-stage Cascaded Interleaved Boost Converters for PV Application , 2020, 2020 IEEE Power and Energy Conference at Illinois (PECI).

[11]  Ebrahim Babaei,et al.  An Interleaved High Step-Up Converter With Coupled Inductor and Built-In Transformer Voltage Multiplier Cell Techniques , 2019, IEEE Transactions on Industrial Electronics.

[12]  Jun Imaoka,et al.  Effect of inductor parasitic resistances on the voltage gain of high step‐up DC–DC converters for electric vehicle applications , 2018, IET Power Electronics.

[13]  Mehdi Ferdowsi,et al.  A High-Voltage-Gain DC–DC Converter Based on Modified Dickson Charge Pump Voltage Multiplier , 2017, IEEE Transactions on Power Electronics.

[14]  Poria Fajri,et al.  A DC–DC Converter With High Voltage Gain and Two Input Boost Stages , 2016, IEEE Transactions on Power Electronics.

[15]  Romeo Ortega,et al.  Energy Management of Fuel Cell/Battery/Supercapacitor Hybrid Power Sources Using Model Predictive Control , 2014, IEEE Transactions on Industrial Informatics.

[16]  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.

[17]  Wuhua Li,et al.  Zero-voltage transition interleaved high step-up converter with built-in transformer , 2011 .

[18]  Raheel Afzal,et al.  A High Step-up Integrated Coupled Inductor-Capacitor DC-DC Converter , 2021, IEEE Access.

[19]  Wuhua Li,et al.  Interleaved High Step-Up ZVT Converter With Built-In Transformer Voltage Doubler Cell for Distributed PV Generation System , 2013, IEEE Transactions on Power Electronics.

[20]  Wuhua Li,et al.  Interleaved High Step-Up Converter With Winding-Cross-Coupled Inductors and Voltage Multiplier Cells , 2012, IEEE Transactions on Power Electronics.