Special Issue "Grid Connected Photovoltaic Systems"

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: 31 January 2019

Special Issue Editor

Guest Editor
Dr. Apel Mahmud

School of Engineering, Deakin University, Waurn Ponds, VIC 3216, Australia
Website | E-Mail
Interests: power system dynamics, resiliency of power grids, power system modeling, power system stability and control, power system fault analysis for bushfire mitigation, microgrids (AC, DC, and hybrid AC/DC), grid integration of renewable energy sources (small- and large-scale), transactive energy management and optimization for microgrids, smart metering and smart grid data analytics, energy storage systems (small- and large-scale), nonlinear control theory and applications

Special Issue Information

Dear Colleagues,

This special issue aims to explore different aspects of grid-connected photovoltaic (PV) systems. The grid integration of PV systems is increasingly pursued all over the world due to several technical, economical, and environmental benefits. However, the integration of small to medium-scale PV systems closer to the customer ends leads to several challenges such as dynamic interactions, power quality, stability, and few other to name. Therefore, it is worth to investigate these problems based on the development of some meaningful dynamical models along with corresponding stability analysis and controller design. By considering these facts, this special issue will stress on the following key topics (but not limited to):

  • Schemes of the grid integration of PV systems
  • Modeling of grid-connected PV systems
  • Dynamic stability analysis of grid-connected PV systems
  • Controller design for grid-connected PV systems
  • Approaches for the economic analysis of grid-connected PV systems
  • Schemes for power quality enhancement of the grid-connected PV systems 

The special issue solicits original theoretical and practical contributions along with review papers on any relevant area of grid-connected PV systems. I would like to cordially invite you for the contribution to this special issue.

Dr. Apel Mahmud
Guest Editor

Manuscript Submission Information

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Keywords

  • Grid Integration
  • Solar PV Systems
  • Dynamical Modeling of Grid-Connected PV Systems
  • Small and large signal Stability Analysis of Grid-Connected PV Systems
  • Control of Grid-Connected PV Systems
  • Economic Analysis of Grid-Connected PV Systems
  • Power Quality Enhancement of Grid-Connected PV Systems

Published Papers (3 papers)

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Research

Open AccessArticle Partial Feedback Linearizing Model Predictive Controllers for Multiple Photovoltaic Units Connected to Grids through a Point of Common Coupling
Electronics 2018, 7(9), 175; https://doi.org/10.3390/electronics7090175
Received: 23 July 2018 / Revised: 24 August 2018 / Accepted: 1 September 2018 / Published: 3 September 2018
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Abstract
In this paper, partial feedback linearizing model predictive controllers are designed for grid-connected systems comprising multiple photovoltaic (PV) units where these units are connected through a point of common coupling (PCC). The proposed controllers are designed for voltage source inverters (VSIs) based on
[...] Read more.
In this paper, partial feedback linearizing model predictive controllers are designed for grid-connected systems comprising multiple photovoltaic (PV) units where these units are connected through a point of common coupling (PCC). The proposed controllers are designed for voltage source inverters (VSIs) based on comprehensive dynamical models of grid-connected PV systems with the proposed topology. The proposed partial feedback linearization scheme decouples multiple PV units in the forms of several reduced-order subsystems and enables linear controller design through the linear continuous-time receding horizon model predictive control scheme. The proposed partial feedback linearization scheme also considers dynamic interactions among multiple PV units as external noises or disturbances and decouples these noises. This paper includes the noise decoupling capability of the partial feedback linearization for grid-connected PV systems with multiple PV units which are connected through a PCC. Simulation results clearly demonstrate the effectiveness of the proposed scheme under different operating conditions as compared to an existing proportional integral controller. Full article
(This article belongs to the Special Issue Grid Connected Photovoltaic Systems)
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Open AccessArticle An Improved Frequency Measurement Method from the Digital PLL Structure for Single-Phase Grid-Connected PV Applications
Electronics 2018, 7(8), 150; https://doi.org/10.3390/electronics7080150
Received: 12 July 2018 / Revised: 9 August 2018 / Accepted: 18 August 2018 / Published: 20 August 2018
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Abstract
The Phase Locked Loop (PLL) technique has been studied to obtain the phase and frequency information in grid-connected distributed generations for the sake of synchronizing the grid voltage and the inverter output current. In particular, the line frequency information, such as the anti-islanding
[...] Read more.
The Phase Locked Loop (PLL) technique has been studied to obtain the phase and frequency information in grid-connected distributed generations for the sake of synchronizing the grid voltage and the inverter output current. In particular, the line frequency information, such as the anti-islanding function, is very important for the grid connection requirement. This paper presents a novel frequency measurement method from the digital PLL control structure for single-phase grid-connected PV applications. The conventional PLL controller uses the phase information to calculate the frequency of PV inverter output voltage after every line cycle and has shown a relatively low accuracy. This paper uses the angular frequency to directly measure the frequency after every line cycle. To verify the validity of the proposed method compared with the conventional method, a simulation was conducted. According to the simulation results, the measurement error of the proposed method is 80 times lower than the conventional one. Full article
(This article belongs to the Special Issue Grid Connected Photovoltaic Systems)
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Open AccessArticle Photovoltaic-STATCOM with Low Voltage Ride through Strategy and Power Quality Enhancement in a Grid Integrated Wind-PV System
Electronics 2018, 7(4), 51; https://doi.org/10.3390/electronics7040051
Received: 5 March 2018 / Revised: 7 April 2018 / Accepted: 7 April 2018 / Published: 12 April 2018
Cited by 5 | PDF Full-text (18658 KB) | HTML Full-text | XML Full-text
Abstract
The traditional configurations of power systems are changing due to the greater penetration of renewable energy sources (solar and wind), resulting in reliability issues. At present, the most severe power quality problems in distribution systems are current harmonics, reactive power demands, and the
[...] Read more.
The traditional configurations of power systems are changing due to the greater penetration of renewable energy sources (solar and wind), resulting in reliability issues. At present, the most severe power quality problems in distribution systems are current harmonics, reactive power demands, and the islanding of renewables caused by severe voltage variations (voltage sag and swell). Current harmonics and voltage sag strongly affect the performance of renewable-based power systems. Various conventional methods (passive filters, capacitor bank, and UPS) are not able to mitigate harmonics and voltage sag completely. Based on several studies, custom power devices can mitigate harmonics completely and slightly mitigate voltage sags with reactive power supplies. To ensure the generating units remain grid-connected during voltage sags and to improve system operation during abnormal conditions, efficient and reliable utilization of PV solar farm inverter as STATCOMs is needed. This paper elaborates the dynamic performance of a VSC-based PV-STATCOM for power quality enhancement in a grid integrated system and low voltage ride through (LVRT) capability. LVRT requirements suggest that the injection of real and reactive power supports grid voltage during abnormal grid conditions. The proposed strategy was demonstrated with MATLAB simulations. Full article
(This article belongs to the Special Issue Grid Connected Photovoltaic Systems)
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