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Stability Analysis of Grid-Connected Photovoltaic Systems with Dynamic Phasor Model

School of Engineering and Information Technology, The University of New South Wales, Canberra, ACT 2612, Australia
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Electronics 2019, 8(7), 747; https://doi.org/10.3390/electronics8070747
Received: 24 May 2019 / Revised: 27 June 2019 / Accepted: 29 June 2019 / Published: 2 July 2019
(This article belongs to the Special Issue Grid Connected Photovoltaic Systems)
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Abstract

The typical layout of power systems is experiencing significant change, due to the high penetration of renewable energy sources (RESs). The ongoing evaluation of power systems is expecting more detailed and accurate mathematical modeling approaches for RESs which are dominated by power electronics. Although modeling techniques based on state–space averaging (SSA) have traditionally been used to mathematically represent the dynamics of power systems, the performance of such a model-based system degrades under high switching frequency. The multi-frequency averaging (MFA)-based higher-index dynamic phasor modeling tool is proposed in this paper, which is entirely new and can provide better estimations of dynamics. Dynamic stability analysis is presented in this paper for the MFA-based higher-index dynamical model of single-stage single-phase (SSSP) grid-connected photovoltaic (PV) systems under different switching frequencies. View Full-Text
Keywords: renewable energy source; power electronic interface; multi-frequency averaging; dynamic phasor; switching frequency sensitivity; grid-connected photovoltaic systems renewable energy source; power electronic interface; multi-frequency averaging; dynamic phasor; switching frequency sensitivity; grid-connected photovoltaic systems
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Mahmud, M.R.; Abdou, A.F.; Pota, H. Stability Analysis of Grid-Connected Photovoltaic Systems with Dynamic Phasor Model. Electronics 2019, 8, 747.

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