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Advanced Control Techniques for Renewable Energy Systems and Power Electronics Volume II

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 10041

Special Issue Editor


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Guest Editor
Chair of High-Power Converter Systems, Technical University of Munich (TUM), 80333 Munich, Germany
Interests: predictive control; wind energy; photovoltaic; sensorless control; power electronics; electrical drive systems; energy storage systems
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Special Issue Information

Dear Colleagues,

I am inviting submissions to a Special Issue of Sustainability entitled “Advanced Control Techniques for Renewable Energy Systems and Power Electronics Volume II”.

Currently, the use of renewable energy systems (wind, photovoltaic, wave, etc.) in power generation systems has increased remarkably worldwide. Furthermore, power electronics circuits are used in various industrial applications, i.e., electrical drive systems, electric vehicles, energy storage systems, and others. Therefore, new control techniques for renewable energy systems and power electronics circuits are highly desirable. Such control techniques should improve the dynamics and steady-state performance of the system under control. Furthermore, improvement of efficiency and power quality are also imperative. The aim of the present Special Issue is to attract original high-quality papers and review articles proposing advanced control strategies for renewable energy systems and power electronics. Major topics of interest include but are not limited to the following:

  • Advanced control techniques (predictive, fuzzy, neural network, sliding mode, etc.);
  • Wind and photovoltaic energy generation systems;
  • Other renewable energy systems;
  • Multi-level power converters;
  • Back-to-back power converters;
  • Multi-phase systems;
  • Robust control systems;
  • Fault ride-through strategies.

The Special Issue will present cutting-edge research results in these emerging fields as a basis for the reliable and efficient operation of renewable energy systems and power electronics circuits. The proposed control techniques should be extensively validated by simulation and/or experimental results.

Dr. Mohamed Abdelrahem
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • control systems
  • wind energy
  • photovoltaic
  • wave energy
  • power electronics
  • robust control
  • fault ride through

Published Papers (6 papers)

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Research

27 pages, 2054 KiB  
Article
Sensorless Tracking Control Based on Sliding Mode for the “Full-Bridge Buck Inverter–DC Motor” System Fed by PV Panel
by Ángel Adrián Orta-Quintana, Rogelio Ernesto García-Chávez, Ramón Silva-Ortigoza, Magdalena Marciano-Melchor, Miguel Gabriel Villarreal-Cervantes, José Rafael García-Sánchez, Rocío García-Cortés and Gilberto Silva-Ortigoza
Sustainability 2023, 15(13), 9858; https://doi.org/10.3390/su15139858 - 21 Jun 2023
Cited by 3 | Viewed by 1293
Abstract
This paper presents a sliding mode control (SMC) for the “full-bridge Buck inverter–DC motor” system when a photovoltaic (PV) panel is considered as the power supply. The control executes the trajectory tracking task related to the angular velocity of the DC motor shaft [...] Read more.
This paper presents a sliding mode control (SMC) for the “full-bridge Buck inverter–DC motor” system when a photovoltaic (PV) panel is considered as the power supply. The control executes the trajectory tracking task related to the angular velocity of the DC motor shaft without the need for electromechanical sensors. The proposed control is validated through realistic simulation results via Matlab-Simulink. In this regard, the system is constructed by using the electronic components of the specialized power systems library of Simscape. The results of the following four case studies are presented: (i) The performance of the closed-loop system considering two desired angular velocity profiles and three different incident solar irradiance shapes on the PV panel. (ii) An analysis associated with the primary energy source. (iii) A comparison of the proposed SMC versus a passive control. (iv) A study of the current ripple and its relationship with the execution of the tracking control task on the angular velocity. Full article
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25 pages, 13399 KiB  
Article
Analysis and Experimental Validation of Single-Phase Cascaded Boost AC–AC Converter with High Voltage Gain
by Dina S. M. Osheba, Sayed M. Ahmed and Azza E. Lashine
Sustainability 2023, 15(4), 3353; https://doi.org/10.3390/su15043353 - 12 Feb 2023
Viewed by 1313
Abstract
This article presents a single-phase cascaded AC–AC converter with boosting capability for power-quality issues. A high voltage gain can be obtained based on the number of cascaded units. The basic construction of one unit in the cascaded connection requires only two four-quadrant switches [...] Read more.
This article presents a single-phase cascaded AC–AC converter with boosting capability for power-quality issues. A high voltage gain can be obtained based on the number of cascaded units. The basic construction of one unit in the cascaded connection requires only two four-quadrant switches with a low-voltage rating. The performance features for the topology are a unity power factor that is close to unity on the input side, high steady-state performance, and fast dynamic response. The operation modes and mathematical model for the topology are presented. An appropriate PI-based control method/strategy is created, so the converter may continue to run while attaining the desired voltage gain, even if one of the cascaded units fails. The control circuit’s ability to maintain the continuity of matching the input current waveform with the input voltage waveform allows a decrease in the THD with different operating conditions. Moreover, the ability to solve a dead time problem carried out by the control circuit leads to a reduction in voltage stress. The effectiveness and robustness of the proposed technique were demonstrated via a computer simulation using MATLAB/Simulink. Moreover, an experimental setup for the system was built in the laboratory to validate the practicability of the system, which was tested under different conditions. The good agreement obtained between the theoretical and experimental results endorses the validity of the designed circuit. Full article
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22 pages, 9440 KiB  
Article
Multiport DC-DC Converter with Differential Power Processing for Fast EV Charging Stations
by Mohamed A. Elkeiy, Yousef N. Abdelaziz, Mostafa S. Hamad, Ayman S. Abdel-Khalik and Mohamed Abdelrahem
Sustainability 2023, 15(4), 3026; https://doi.org/10.3390/su15043026 - 7 Feb 2023
Cited by 6 | Viewed by 2338
Abstract
With the growing interest in owning electric vehicles due to increased environmental awareness and uncertain energy security together with the development of Li-ion batteries, quietness, and trouble-free operation, it is urgent to develop charging stations that are fast enough to supply the vehicles [...] Read more.
With the growing interest in owning electric vehicles due to increased environmental awareness and uncertain energy security together with the development of Li-ion batteries, quietness, and trouble-free operation, it is urgent to develop charging stations that are fast enough to supply the vehicles with energy conveniently, as in case of conventional petrol stations. The main reason that hinders the spread of fast charging stations is the installation cost, comprising the infrastructure and converter costs. In this article, a multiport DC-DC converter with differential power processing stages is proposed for Electric Vehicle (EV) fast charging stations, which results in a considerable reduction in the cost of using converters while achieving high efficiency. The proposed topology consists of two paths for the power flow (outer and inner loops) for EV battery charging with main and auxiliary DC-DC converters in the outer loop; all the ports are connected in series with the main supply, where the bulk power is being transferred. The main DC-DC converter injects a series voltage to control the power in the outer loop. The auxiliary DC-DC converters are rated at a fractional power that controls the partial power supplied to each port through the inner loops. Thanks to the fractional power processed by the auxiliary converter with the remaining power fed to the battery through the main converter, the proposed architecture enables simultaneous charging of multiple electric vehicles with better efficiency, lower cost, and the capability of providing a fault tolerance feature. A PWM control scheme for the converters to achieve bi-directional power flow in the partially rated DC-DC converters is discussed for the proposed system. Moreover, a practical down-scaled hardware prototype is designed to validate the functionality, control scheme, and effectiveness of the proposed topology in different case studies being investigated. The efficiency of the proposed converter is compared to the conventional configuration. Full article
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12 pages, 3129 KiB  
Article
A Robust Control Scheme for Dynamic Voltage Restorer with Current Limiting Capability
by Jie Shi and Xiangzheng Xu
Sustainability 2022, 14(24), 16752; https://doi.org/10.3390/su142416752 - 14 Dec 2022
Cited by 1 | Viewed by 1252
Abstract
In this paper, a second order sliding mode control scheme is utilized for outer voltage loop of a three-phase fault current limiter-based dynamic voltage restorer (FCL-DVR) instead of a conventional proportional integral/proportional resonance (PI/PR) controller. The new control strategy improves the dynamic performance [...] Read more.
In this paper, a second order sliding mode control scheme is utilized for outer voltage loop of a three-phase fault current limiter-based dynamic voltage restorer (FCL-DVR) instead of a conventional proportional integral/proportional resonance (PI/PR) controller. The new control strategy improves the dynamic performance of the FCL-DVR against voltage distortion. Furthermore, by using the proposed robustness controller, the FCL-DVR can smoothly switch between the FCL and DVR operation modes. Compared with other existing control schemes, the proposed control strategy for the FCL mode can still work well under a large fault current. The MATLAB/Simulink simulation results demonstrate that the proposed control strategy is robust to voltage harmonics, sag and swell. They also show that the proposed control scheme can effectively limit the fault current in different scenarios. Full article
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24 pages, 1545 KiB  
Article
Analysis and Control of Chaos in the Boost Converter with ZAD, FPIC, and TDAS
by Simeón Casanova Trujillo, John E. Candelo-Becerra and Fredy E. Hoyos
Sustainability 2022, 14(20), 13170; https://doi.org/10.3390/su142013170 - 14 Oct 2022
Cited by 1 | Viewed by 1120
Abstract
This paper presents an analysis and control of chaos in the boost converter controlled with zero average dynamics, fixed-point induced control, and time-delayed autosynchronization techniques. First, the existence of chaos is demonstrated numerically when positive Lyapunov exponents are found in the controlled system, [...] Read more.
This paper presents an analysis and control of chaos in the boost converter controlled with zero average dynamics, fixed-point induced control, and time-delayed autosynchronization techniques. First, the existence of chaos is demonstrated numerically when positive Lyapunov exponents are found in the controlled system, for a range from k1=0.26 to k1=0.4387, when k2=0.5. Additionally, chaos is also found for a range from k1=0.435 to k1=0.26, when k2=0.5. Subsequently, fixed-point-induced control and time-delayed autosynchronization techniques are used to control the chaos. The results show that both techniques are useful to control the chaos in the boost converter. Furthermore, the fixed-point-induced control technique allows better regulation than the time-delayed autosynchronization technique. Moreover, when only the fixed-point induced control technique is used on the boost converter with a time delay, the results were not good enough to stabilize orbits. The stability is validated by calculating the Lyapunov exponents. Full article
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20 pages, 1868 KiB  
Article
Evaluation of the Main Control Strategies for Grid-Connected PV Systems
by Mostafa Ahmed, Ibrahim Harbi, Ralph Kennel, José Rodríguez and Mohamed Abdelrahem
Sustainability 2022, 14(18), 11142; https://doi.org/10.3390/su141811142 - 6 Sep 2022
Cited by 5 | Viewed by 1747
Abstract
The present study aims at analyzing and assessing the performance of grid-connected photovoltaic (PV) systems, where the considered arrangement is the two-stage PV system. Normally, the maximum power point tracking (MPPT) process is utilized in the first stage of this topology (DC-DC). Furthermore, [...] Read more.
The present study aims at analyzing and assessing the performance of grid-connected photovoltaic (PV) systems, where the considered arrangement is the two-stage PV system. Normally, the maximum power point tracking (MPPT) process is utilized in the first stage of this topology (DC-DC). Furthermore, the active and reactive power control procedure is accomplished in the second stage (DC-AC). Different control strategies have been discussed in the literature for grid integration of the PV systems. However, we present the main techniques, which are considered the commonly utilized and effective methods to control such system. In this regard, and for MPPT, popularly the perturb and observe (P&O) and incremental conductance (INC) are employed to extract the maximum power from the PV source. Moreover, and to improve the performance of the aforementioned methods, an adaptive step can be utilized to enhance the steady-state response. For the inversion stage, the well-known and benchmarking technique voltage-oriented control, the dead-beat method, and the model predictive control algorithms will be discussed and evaluated using experimental tests. The robustness against parameters variation is considered and an extended Kalman filter (EKF) is used to estimate the system’s parameters. Future scope and directions for the research in this area are also addressed. Full article
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