Work

Two-stage photovoltaic system with a high-gain fifth-order boost converter

Year: 2025

Type: article

Abstract: This paper introduces a novel two-stage PV system comprising a high-gain, efficient fifth-order boost converter. The dynamic modeling of the system components, including the PV array, fifth-order boost converter-based PV-side converter (FOBC-PVSC), grid-side converter (GSC), and grid is analyzed. The system’s dynamic and small-signal analyses are evaluated to determine how FOBC-PVSC input capacitor changes affect the system’s overall performance. The FOBC-PVSC’s eigenvalue and PV input-to-output transfer function analyses are used to determine the stability and allowable range of the DC-stage input capacitor values. The grid-side converter’s eigenvalue analysis evaluates the proposed model’s robustness to grid short-circuit ratio changes and band-pass filter damping ratio variations in grid voltage measurement. The grid-side LCL filter stability analysis is considered and different passive damping models evaluated to address resonance issues. Also, the proposed system’s MPPT and GSC controllers are modeled to obtain the maximum available PV power, boost the voltage to 800 DC volts, and convert the DC output to AC grid-rated value.

Source: e-Prime - Advances in Electrical Engineering Electronics and Energy

DOI: 10.1016/j.prime.2025.101038

Authors: Chikezie M. Emeghara, Satish M. Mahajan, Ali Arzani

Institution: Tennessee Technological University

Language: English

Topic: Advanced DC-DC Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,400