Modelling, Estimation and Control of Grid-Connected Converter Systems under Adverse Grid Voltage Conditions

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

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 3514

Special Issue Editors


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Guest Editor
School of Computer Science and Electronic Engineering, the Nuclear Futures Institute, Bangor University, Bangor LL57 2DG, UK
Interests: advanced control system; mechatronics; renewable energy systems; sliding mode control and observation; environmental monitoring; signal processing
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Guest Editor
Norwegian University of Science & Technology, 7491 Trondheim, Norway
Interests: digital control of power electronics for cyberphysical systems; wind and solar energy integration; microgrid; smart grids; robust control theory for power electronics systems

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Guest Editor
Institut de Recherche Dupuy de Lôme (UMR CNRS 6027 IRDL), University of Brest, 29238 Brest, France
Interests: fault detection and diagnosis; failure prognosis; cyberattack detection; fault-resilient control; machine learning
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Grid-connected power electronic systems are an integral part of modern power system architectures. The last few decades have seen an exponential growth in grid-connected custom power devices, e.g., renewable energy interfaced inverters, active rectifiers, dynamic voltage restorers, active power filters, motor drives and uninterrupted power supply, to name a few. However, in today’s renewable heavy power grid, the operation of grid-connected inverters has become very challenging due to adverse grid conditions. In order to meet the demand of an ever-changing scenario of the customer devices landscape, innovative techniques are required that can cope with the presence of various distortions in the grid. This will enable a smooth transition towards a more renewable power grid.

This Special Issue will consider recent developments in the modelling, estimation and control of grid-connected converter systems under adverse grid conditions. Both original research articles and reviews are welcome. Topics of interest for this Special Issue include but are not limited to,

  • Grid-synchronisation techniques (PLL, FLL etc.);
  • Harmonics and grid abnormalities detection techniques;
  • Advanced control of grid-connected devices;
  • Advanced power converter topology development for distorted grid;
  • Topology development, modelling, estimation and control of EV chargers;
  • Multifunctional grid-connected renewable energy systems;
  • Adaptive and learning-based techniques (e.g., neural networks) for grid-connected systems;
  • Energy management of grid-connected systems;
  • Control of grid-connected high voltage DC (HVDC) converters and modular multilevel converters (MMC);

Stability and interaction issues in grid-connected converters.

Dr. Hafiz Ahmed
Dr. Mohammad Amin
Prof. Dr. Mohamed Benbouzid
Guest Editors

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Keywords

  • grid-connected system
  • renewable energy systems
  • advanced control
  • grid-synchronisation
  • phase-locked loop
  • frequency-locked loop
  • HVDC
  • harmonics
  • distorted grid
  • EV charger

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Published Papers (1 paper)

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Research

15 pages, 1486 KiB  
Article
A New Grid-Connected Constant Frequency Three-Phase Induction Generator System under Unbalanced-Voltage Conditions
by Mohammadreza Moradian, Jafar Soltani, Gholam Reza Arab Markadeh, Hossein Shahinzadeh and Yassine Amirat
Electronics 2021, 10(8), 938; https://doi.org/10.3390/electronics10080938 - 14 Apr 2021
Cited by 13 | Viewed by 2442
Abstract
This paper presents a new constant frequency, direct grid-connected wind-based induction generator system (IGS). The proposed system includes a six-phase cage rotor with two separate three-phase balanced stator windings and a three-phase SV-PWM inverter which is used as a STATCOM. The first stator [...] Read more.
This paper presents a new constant frequency, direct grid-connected wind-based induction generator system (IGS). The proposed system includes a six-phase cage rotor with two separate three-phase balanced stator windings and a three-phase SV-PWM inverter which is used as a STATCOM. The first stator winding is connected to the STATCOM and is used to excite the machine. The main frequency of the STATCOM is considered to be constant and equal to the main grid frequency. In the second stator winding, the frequency of the induced emf is equal to the constant frequency, so the generator output frequency is independent of the load power demand and its prime mover speed. The second stator winding is directly connected to the main grid without an intermediate back-to-back converter. In order to regulate the IGS output active and reactive power components, a sliding mode control (SMC) is designed. Assuming unbalanced three-phase voltages for the main grid, a second SMC is developed to remove the machine output’s negative sequence currents. Moreover, a conventional PI controller is used to force the average exchanging active power between the machine and STATCOM to zero. This PI controller generates the reference value of the rotor angular speed. An adjustable speed pitch angle-controlled wind turbine is used as the IGS’s prime mover. The effectiveness and capability of the proposed control scheme have been supported by the simulation results. Full article
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