A Novel Hilbert Transform Weight-Factor Based Control Strategy For Grid Connected PV System With Multifunctional Capability

Surender Kumar  Sharma; Vijayakumar  Gali; Sunil Kumar  Gupta

doi:10.6180/jase.202309_26(9).0007

A Novel Hilbert Transform Weight-Factor Based Control Strategy For Grid Connected PV System With Multifunctional Capability

Electrical Engineering

Surender Kumar Sharma , Vijayakumar Gali , and Sunil Kumar Gupta

Department of Electrical and Electronic Engineering, Poornima University, Jaipur, Rajasthan, India.

Received: March 11, 2022
Accepted: October 6, 2022
Publication Date: November 24, 2022

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202309_26(9).0007

ABSTRACT

This Paper proposes a Hilbert transform weight factor (HTWF) based control strategy for improving the reliability of grid integrated solar photovoltaic (PV) system. The integration of PV to the main grid increasing numerously across the globe. However, grid synchronization, stability and harmonic elimination is always a challenge under distorted grid voltage conditions. The proposed HTWF control strategy uses delayed input vectors to extract fundamental supply voltage components from the distorted supply voltage. Further, a complex filter is being inserted to synchronize the PV system with the utility grid without any phase delay. The proposed HTWF based DC-link voltage control technique is developed in a MATLAB®/ Simulink environment. The performance of the proposed HTWF based DC-link voltage control technique is tested in comparison with LMS and LAD based control techniques under various grid supply and load currents. The MATLAB simulation results show that the proposed system is robust, takes lesser time for convergence, no synchronizing problems along with maintain the harmonic spectral of source current within IEEE-519 standards.

Keywords: IEEE Standards; Hilbert transform weight factor (HTWF); power quality; PV integration; renewable energy; utility grid

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