Authors:
Srinivas Kandadai Nagaratnam, K. Arulvendhan, P. Srinivasan, C. Sathish Kumar, Saly Jaber
Addresses:
Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India. Department of Electrical and Electronics Engineering, Saveetha Engineering College, Thandalam, Chennai, Tamil Nadu, India. Department of Computer Science, Faculty of Science and Humanities, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India. Department of Analytical Chemistry, Saint Joseph University, Beirut, Lebanon.
Abstract:
This Paper targets the analysis and optimization of the dynamic time response of a photovoltaic (PV) energy conversion system with a closed-loop re-boost converter, with active and reactive power control implemented by a fractional-order proportional–integral–derivative (FOPID) controller. The research targets the modelling and simulation of FOPID-based current limitation for a grid-connected inverter, ensuring stable and efficient operation under varying load and grid conditions. Active and reactive power control have played major roles in power system applications, especially with voltage-source inverters (VSIs), where pulse-width modulation (PWM) techniques are used to generate the switching pulses. To improve power quality, an active filter is employed to eliminate load current harmonics, ensuring the overall reliability of the grid interface. Simulation experiments are performed to compare the responses of FOPID-controlled active and reactive power methods with those of a conventional proportional–integral (PI) controller. The comparison is based on extensive time-domain parameters and includes data on transient response, settling time, and harmonic suppression. Comparative results indicate that although both control schemes are satisfactory, the FOPID-based scheme consistently delivers better performance, with higher dynamic response, lower overshoot, and improved harmonic elimination than its PI-based counterpart.
Keywords: Re-Boost Converter; Solar Panel; Pulse Width Modulation; PWM Inverter; PI-Controller; FOPID-Controller; Voltage Source Inverters; Grid-Connected PV Systems.
Received: 14/11/2024, Revised: 02/01/2025, Accepted: 13/02/2025, Published: 09/12/2025
DOI: 10.64091/ATIEL.2025.000188
AVE Trends in Intelligent Energy Letters, 2025 Vol. 1 No. 2 , Pages: 87-99