Analysis and optimization of a solar PV system with high-gain DC-DC converter and multilevel inverter
Year: 2025
Type: article
Abstract: This paper presents a comprehensive analysis of a solar photovoltaic (PV) system incorporating Maximum Power Point Tracking (MPPT) using Perturb and Observe (P&O) algorithm, interfaced with a high gain (HG) step-up DC-DC converter and fed into an 11-level inverter with Proportional Resonant (PR) control. The suggested system is designed to optimize energy extraction from the solar array and enhance voltage gain to meet the requirements of medium-to-high power applications. The high step-up DC-DC converter ensures an efficient boost in voltage while maintaining low voltage stress on the components. An 11-level inverter is employed to convert the stepped up DC voltage into AC for grid-tied or standalone applications. The PR controller is chosen for its superior performance in tracking sinusoidal references and minimizing steady-state error. Using the PR controller, lower Total Harmonic Distortion (THD) values are achieved, with 6.45% for voltage and 4.65% for current. The performance of the inverter is analysed under Rotating Trapezoidal Sinusoidal Pulse Width Modulation (RTSPWM) technique, to evaluate their impact on harmonic distortion, voltage regulation, and overall efficiency.
Source: Engineering Research Express
Authors: Shakeera Shaik, Rachananjali K
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4409671393