Investigation of Power Quality Enhancement in Grid-Connected Solar System

DOI

10.2991/978-94-6239-654-8_25How to use a DOI?

Keywords

grid-connected solar systems; Total harmonic distortion; hybrid IPSO-NN MPPT technique; virtual Synchronous Machine; Finite Control Set Model Predictive Control (FCS-MPC)

Abstract

Grid connected solar PV systems mostly face problems related to power quality like harmonic distortion, voltage fluctuation and slow response under varying sunlight. To overcome this issue the paper introduces a system which provides optimal solution to the problems by using combination of advanced Power electron components and smart control technique to improve overall efficiency and stability. In the proposed system, the PV array is connected through an interleaved high gain coupled inductor DC-DC boost converter. This converter helps to reduce ripple in input current and maintain a steady DC-link voltage. To extract maximum power from the PV panel a hybrid IPSO-NN MPPT method is used, which contains Particle Swarm optimization with Neural Network. This approach ensures that the system is quicker and more accurate in tracking maximum power point even under varying weather conditions or partial shading. The regulated DC power is then supplied to a silicon carbide (Sic) based three level Neutral point clamped (NPC) inverter. This inverter works based on Finite Control Set Model Predictive Control (FCS-MPC) which make the system fast response to changes and improved quality of the output grid current. This helps in reducing switching losses, improving harmonic performance, and fast transient response. The LCL filter with active damping helps to reduce the switching harmonics and ensures the system sends clean, required current into the network. To improve grid support Virtual Synchronous Machine (VSM) based grid-farming is used, which provides virtual inertia, improved voltage stability, and adaptive droop-based power sharing. Experimental and simulation results show the significant improvement in total harmonic distortion (THD) below 3%, faster MPPT tracking, better dynamic stability, and overall high-power quality at PCC.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - S. Dhivya
AU  - S. Prakash
PY  - 2026
DA  - 2026/04/24
TI  - Investigation of Power Quality Enhancement in Grid-Connected Solar System
BT  - Proceedings of the Global Conference on Sustainable Energy Systems, Smart Electronics and Intelligent Computing (GCSESEIC 2025)
PB  - Atlantis Press
SP  - 288
EP  - 303
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-654-8_25
DO  - 10.2991/978-94-6239-654-8_25
ID  - Dhivya2026
ER  -