NDLI: Detection and estimation of grid-connected issues in quasi-Z-source inverter based photovoltaic system using robust parametric methods

Content Provider	IET Digital Library
Author	Deepamangai, Palanivel Manoharan, P. S.
Abstract	This study presents robust parametric methods for the detection and estimation of grid-connected issues such as islanding, harmonics, and interharmonics. The power system signals are time varying owing to the intermittent nature of renewable energy sources. IEEE and IEC consider signals as stationary, which are negated in a future scenario. Therefore, parametric methods need to be applied for the estimation of these signals. In this study, parametric methods such as estimation of signal parameters via rotational invariant technique (ESPRIT) and multiple signal classifier are implemented in a grid-connected quasi-Z-source inverter, for the mitigation of the aforementioned grid-connected issues. Additionally, a novel ESPRIT-aided support vector machine (ESPRIT-SVM) is proposed for harmonics estimation. A comparative study is also conducted on the different parametric methods using MATLAB/SIMULINK. The proposed method is verified for application in various scenarios such as power mismatch, load switching, and capacitor switching. The simulation results of the proposed ESPRIT-SVM are validated through real-time experiments.
Starting Page	3661
Ending Page	3674
Page Count	14
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 16, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.1582
Journal	IET Power Electronics
Publisher Date	2020-08-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Capacitor Switching Digital Signal Processing ESPRIT-aided Support Vector Machine ESPRIT-SVM Estimation of Signal Parameter Via Rotational Invariant Technique Grid-connected Issues Grid-connected QuasiZ-source Inverter Harmonics Harmonics Estimation Invertors Knowledge Engineering Technique Multiple Signal Classifier Photovoltaic Power System Photovoltaic System Power Engineering Computing Power Grid Power Supply Quality Power System Harmonics Power System Signal Power System Simulation Renewable Energy Source Robust Parametric Method Signal Classification Signal Processing And Detection Solar Power Solar Power Stations Support Vector Machine Time-vaying Signal
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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