Study Total Harmonic Distortion in PI-Controlled Single-Stage Grid-Connected Photovoltaic Systems under Non-linear Load

Author(s)	Suman Pramanik, Dr. Tushar Kanti Gangopadhayay
Country	India
Abstract	Concerns about power quality, particularly effects of Total Harmonic Distortion (THD) caused by non-linear loads, have increased due to the rapid integration of solar energy into the power grid. This paper presents a detailed study of THD content in grid-connected single-stage photovoltaic (PV) systems using proportional-integral (PI) controllers. Single-stage systems are preferred due to their simplicity and efficiency. The LCL filter is designed to attenuate the harmonic content. This paper employs a PI current-controlled strategy in conjunction with an LCL filter to maintain grid power quality. The system's performance is assessed under non-linear loading conditions with simulation-based modelling in MATLAB/Simulink for a single-stage grid-connected photovoltaic system.
Keywords	Power Quality, Total Harmonic Distortion (THD), PI Controller, Single Stage Grid-Connected Photovoltaic System
Field	Engineering
Published In	Volume 8, Issue 4, July-August 2026
Published On	2026-08-12
DOI	https://doi.org/10.36948/ijfmr.2026.v08i04.85620

About IJFMR Fees & Payment Current Issue Publication Archive	Submit Research Paper Track Submission Status Publication Guidelines Publication Ethics Peer Review & Plagiarism	Join as a Reviewer Editors & Reviewers Reviewer Referral Program Get Reviewer Membership Certi.	Website/Journal Policies Usage Policy Content Policies Privacy Policy

Contact Us		+91-9687-828-838	editor@ijfmr.com

International Journal For Multidisciplinary Research