Sun Flower Optimization with Self-Tuned Fuzzy Logic MPPT Controller and Reactive Power Compensation for Grid-Connected PV System

Abstract

This paper presents a detailed study on the analysis of the reactive power compensation methodology used for delivering the maximum power to single-phase grid–PV systems. The main purpose of this work is to develop a Sunflower Optimization (SFO) integrated with a Self-tuned Fuzzy Logic Controller (SFLC)-based Maximum Peak Point Tracking (MPPT) controlling mechanism for extracting the maximum power from the solar PV system. For this, an efficient Entwined LUO (ELUO) DC-DC converter has been utilized that helps to regulate the output voltage with reduced ripples. Also, the inverter provides real power in addition to the reactive power without exceeding its current limit. For controlling the capability of energy transmission, the Phased Locked Loop (PLL) based synchronization is performed at the point of common coupling. Additionally, the LCL filtering technique is employed to reduce the harmonics and unbalanced current efficiently. The proposed system improves the overall system performance by producing grid-side current in a clean sinusoidal shape with an appropriate phase shift in grid voltage. The simulation and experimental results are validated to demonstrate the effectiveness of the proposed control method.

KEYWORDS:

• Entwined LUO (ELUO) Converter
• LCL Filter
• Reactive Power Compensation
• Solar Photovoltaic (PV)
• Sun Flower Optimization integrated with Self-tuned Fuzzy Logic Controller (SFO-SFLC)

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Nirmala Rajendran

Nirmala Rajendran received a BE degree from Tamil Nadu College of Engineering in 2015 and an ME degree from Alagappa Chettiar Government College of Engineering and Technology in 2017. She is currently working towards the PhD degree in the faculty of electrical engineering, Department of Electrical and Electronics Engineering, Alagappa Chettiar Government College of Engineering & Technology, Karaikudi, Tamil Nadu, India. Her main research interests focus on renewable energy systems and power electronics.

Venkatesan Sundharajan

Venkatesan Sundharajan obtained MTech in electrical drives and control from Pondicherry University and a PhD in electrical engineering from Anna University, Chennai, India. Currently working as assistant professor in Alagappa Chettiar Government College of Engineering and Technology, Karaikudi, Tamil Nadu, India. He completed his research in the area of performance enhancement of standalone PV system. His current research interests are power converters for renewable energy sources, reactive power compensation in the grid–PV system, and improving the performance of an electric vehicle. Email: [email protected]