Enhanced High-Gain Y-Source DC-DC Converter with Switched-Inductor-Capacitor Design for Improved Efficiency and Reliability in Grid-Integrated Solar Power Systems
نویسندگان
1 Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India.
2 Department of Electronics and Communication Engineering, Chandigarh College of Engineering and Technology (Degree Wing), Chandigarh, India
3 Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India.
4 Department of Electrical Engineering, Graphic Era (Deemed to be University), Dehradun, India.
5 Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India.
6 Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India.
doi
10.30501/jree.2025.493144.2191چکیده
Efficient and reliable high-gain DC–DC converters are critical in photovoltaic (PV) grid-connected systems to bridge the gap between low-output PV voltages and the high input voltages required by the grid. This paper presents a novel high-gain DC–DC converter that integrates a Y-source network with a hybrid switchedinductor-capacitor (SLC) boost module, achieving superior voltage amplification at reduced duty cycles. The proposed converter architecture can achieve a voltage gain of up to 16 times the input voltage with only an 18% duty cycle, thereby minimizing conduction and switching losses and extending the converter’s operational lifespan.The design enables continuous current draw from the source while maintaining reduced stress on components, distinguishing it from conventional converters. A detailed steady-state analysis and design methodology for the inductive and capacitive elements are provided, with final component values optimized for performance and reliability. MATLAB/Simulink simulations validate the theoretical analysis, demonstrating an efficiency of 88.8% at 100 W output power and a mean time to failure (MTTF) of 104.14 kHr, representing substantial improvements over existing topologies.Experimental validation on a 100 W prototype confirms the converter’s reliability and performance, achieving a stable output voltage of 192 V from a 12 V input. Comparative analysis with traditional Y-source and SLC-based converters highlights the proposed topology’s advantages in efficiency, voltage gain, and reduced component count, making it a promising candidate for PV grid applications.
