Article
Engineering, Electrical & Electronic
Fredrik Gothner, Raymundo E. Torres-Olguin, Javier Roldan-Perez, Atle Rygg, Ole-Morten Midtgard
Summary: Droop control is commonly used for microgrids and distributed generators due to its power-sharing characteristics and low dependence on communication systems. However, the stability of MGs under this control approach is sensitive to parameter values and system topology. A centralized controller is proposed in this article to enhance stability margins by periodically identifying apparent impedance and modifying droop gains accordingly. This method shows improvement in stability margins without compromising power sharing, transient performance, and communication system dependence of droop control. Simulation and experimental results confirm the effectiveness of the proposed control scheme for an MG with 60 kVA DGs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Marine
Muhammad Muzammal Islam, Syed Ahmad Siffat, Iftikhar Ahmad, Muwahida Liaquat
Summary: This paper proposes Robust Integral Backstepping, Synergetic, and Terminal Synergetic controllers for course keeping control of ships, aiming at improving course keeping performance and reducing energy consumption. The efficiency of these controllers is assessed by computing output response, energy consumption, and smoothness performances.
Article
Chemistry, Physical
Burak Yildirim
Summary: This paper presents an advanced controller design for load frequency control of an islanded fuel cell microgrid based on renewable energy resources. The controller design is based on determining the stability parameter plane and adding virtual gain and phase margin testers to provide the desired dynamic properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Automation & Control Systems
Ali Soltani Sharif Abadi, Pooyan Alinaghi Hosseinabadi, Ayesha Hameed, Andrew Ordys, Barbara Pierscionek
Summary: An exoskeleton robot is a wearable device that requires the application of interactive force between human and robot. Force sensors placed on the robot must consider factors such as cost, noise, and weight. This study proposes a method of using state observers and a robust fixed-time controller to estimate the interactive force between a human arm model and an exoskeleton robot.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Article
Computer Science, Information Systems
Issarachai Ngamroo, Tossaporn Surinkaew
Summary: This paper presents an adaptive robust control strategy for future microgrids considering CCG modes, effectively addressing the lack of system inertia and control issues brought by new CCG modes through robust controller design by identifying microgrid models.
Article
Computer Science, Artificial Intelligence
Kamel Sabahi, Mehdi Tavan, Amin Hajizadeh
Summary: The paper proposes an adaptive type-2 fuzzy PID (T2FPID) controller for load frequency control in an AC microgrid system, which can handle system nonlinearities and uncertainties better and demonstrates its effectiveness in maintaining generation-load balance.
Article
Computer Science, Artificial Intelligence
Hadi Delavari, Morteza Zolfi
Summary: An indirect adaptive fuzzy fractional-order sliding mode control method is proposed in this paper for maximum power extraction in photovoltaic systems. The method is based on a two-loop approach and eliminates chattering in control signal using a continuous function.
Article
Engineering, Electrical & Electronic
Zhihao Zhang, Xianqiang Yang, Xiaogang Jia
Summary: This article proposes a multiscale template matching method based on nearest neighbor search, deriving a scale-adaptive measure through probabilistic analysis and explicit deformation penalization. Experiments show that the method is robust to scale changes and other challenging aspects, outperforming the state-of-the-arts in real-world scenarios.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Computer Science, Information Systems
Izzat Al-Darraji, Dimitrios Piromalis, Ayad A. Kakei, Fazal Qudus Khan, Milos Stojemnovic, Georgios Tsaramirsis, Panagiotis G. Papageorgas
Summary: This study introduces an adaptive robust controller based on the Radial Basis Function neural network to stabilize Aerial Robot Arms (ARAs) and address modeling errors and unknown payload issues. The research also takes into account high nonlinearity, coupling control loops, and environmental conditions, showing the validation and significance of the control algorithm through simulations.
Article
Green & Sustainable Science & Technology
Nada Zine Laabidine, Badre Bossoufi, Ismail El Kafazi, Chakib El Bekkali, Najib El Ouanjli
Summary: This research proposes an adaptive super twisting approach to control the wind energy conversion system, resolving the oscillation issue in sliding mode control technique and improving the efficiency and stability of the system, resulting in better productivity of the wind power generation system.
Article
Computer Science, Information Systems
Luis Morales, Jose Aguilar, Oscar Camacho, Andres Rosales
Summary: This paper presents a new intelligent sliding mode controller based on the LAMDA algorithm for computing continuous and discontinuous control actions, which can be applied to SISO systems. Simulations on nonlinear chemical processes validate the method's excellent performance in controlling tanks, significantly improving performance and robustness.
INFORMATION SCIENCES
(2021)
Article
Computer Science, Information Systems
Ahmed M. Hussien, Rania A. Turky, Hany M. Hasanien, Ahmed Al-Durra
Summary: This study introduces a novel implementation of an adaptive PI controller to enhance the efficiency of autonomous microgrid operation. The practicality of the control plan is demonstrated through evaluation under different environments, with results matching those obtained using optimal PI controllers based on SFO and PSO algorithms.
Article
Automation & Control Systems
Kemal Ucak, Gulay Oke Gunel
Summary: This paper introduces a novel adaptive stable backstepping controller based on support vector regression for nonlinear dynamical systems. The controller utilizes SVR to identify the dynamics of the nonlinear system and integrates stable BSC behavior. The experimental results demonstrate successful control performance for both nonlinear systems.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2024)
Article
Mathematics
Sultan Alghamdi, Hatem F. F. Sindi, Ahmed Al-Durra, Abdullah Ali Alhussainy, Muhyaddin Rawa, Hossam Kotb, Kareem M. M. AboRas
Summary: A distributed control scheme is proposed in this article to compensate for voltage harmonics in islanded microgrids. The scheme includes primary and secondary control levels for each distributed generation (DG) source, and utilizes virtual impedance control loops to divide power between the main and harmonic components of the DGs. A modified droop controller structure is used for coordinated operation of the inverters during islanding, resulting in accurate voltage regulation. A harmonic droop controller is designed to calculate and add harmonic voltages to the reference voltage, improving the quality of the output voltage. The inverter voltage control loop is modified with resistive impedance to significantly reduce the total harmonic distortion (THD) of the output voltage in the presence of nonlinear loads.
Article
Engineering, Marine
Lu Liu, Lichuan Zhang, Guang Pan, Shuo Zhang
Summary: Autonomous underwater vehicles (AUVs) have significant research attention in marine science and technology due to their wide applications and ability to replace humans in dangerous operations. In this study, a robust fractional-order proportional-integral-derivative (FOPID) controller design for an AUV yaw control system is proposed. The simulation results demonstrate the superior robustness and transient performance of the proposed control algorithm.
Article
Automation & Control Systems
Bo Long, PengJie Lu, Danny Zhan, Xin Lu, Jose Rodriguez, Josep M. Guerrero, Kil To Chong
Summary: This paper proposes a Fuzzy-FOSMC dual loop current controller for a reduced-order three-phase LCL-type grid-connected converter. The introduced fractional-order term can suppress chattering, and the fuzzy controller adjusts the fractional-order of FOSMC to improve system performance. The inner loop is implemented using a Fuzzy-FOSMC controller to ensure current tracking.
Article
Automation & Control Systems
Yi Zhang, Qiuye Sun, Jianguo Zhou, Rui Wang, Josep M. Guerrero, Abderezak Lashab
Summary: This paper proposes a novel virtual inertia controller for converters in power systems to solve the nonlinearity and provide frequency support. An online adaptive dynamic programming method is used to solve the optimal frequency regulation problem, and the stability of the controller is verified through small-signal analysis.
JOURNAL OF CONTROL AND DECISION
(2023)
Article
Computer Science, Artificial Intelligence
Vishnu Suresh, Przemyslaw Janik, Michal Jasinski, Josep M. Guerrero, Zbigniew Leonowicz
Summary: This article investigates the economic dispatch problem of microgrids by applying traditional and newly introduced metaheuristic optimization algorithms to solve for the optimal power flow problem. The best performing algorithm is chosen to achieve cost-effective economic dispatch in a microgrid facility. The results demonstrate that the ant-colony based algorithm is the most suitable choice with the best convergence time, final solution value, and reliability. It is then utilized for economic dispatch guided by an objective function to minimize the levelized cost of energy in the microgrid.
APPLIED SOFT COMPUTING
(2023)
Article
Thermodynamics
Ali Abdali, Ali Abedi, Kazem Mazlumi, Abbas Rabiee, Josep M. Guerrero
Summary: In this paper, a comprehensive and precise 3D computational fluid dynamic (CFD) based modeling is proposed for hotspot temperature (HST) prediction in corrugated wall distribution transformers (CWDTs). Optical fiber sensors (OFSs) are employed to validate the precision of the proposed method during the temperature rise test (TRT). The results indicate that the proposed 3D CFD-based model is accurate in predicting HST, and thermal camera results are in good agreement with the simulation.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Milad Moafi, Reza Rouhi Ardeshiri, Manthila Wijesooriya Mudiyanselage, Mousa Marzband, Abdullah Abusorrah, Muhyaddin Rawa, Josep M. Guerrero
Summary: This paper proposes a three-level gameplay-based intelligent structure to evaluate individual and collaborative strategies of electricity manufacturers. It optimizes and models distributed energy resources and renewable sources using particle swarm optimization and fuzzy logic algorithms, and applies cooperative game theory and allocation methods to increase coalition profits and ensure fair profit allocation.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
S. M. Hashemi, H. Arasteh, M. Shafiekhani, M. Kia, J. M. Guerrero
Summary: This paper addresses the optimal operation of microgrids with both electrical and thermal loads. It proposes metrics to evaluate the flexibility of the system for both electrical and thermal units. A multiobjective framework is proposed considering flexibility and financial concerns. The Information Gap Decision Theory method is used to handle uncertainties. The Normalized Normal Constraint approach is employed to find evenly distributed Pareto solutions.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Engineering, Multidisciplinary
Farooq Alam, Syed Sajjad Haider Zaidi, Arsalan Rehmat, Muhammad Umair Mutarraf, Mashood Nasir, Josep M. Guerrero
Summary: Hybrid microgrid optimization, integration, and control are crucial in the context of renewable energy source integrations in shipping ports. The lack of cold ironing services in several seaports necessitates the continuous operation of diesel engines and diesel generator-based shipboards when docking. This research focuses on the robustness of a proposed hierarchical control design for a hybrid shipboard microgrid system with multiple DGs and renewable energy resource (RES) integrations, comparing the performance of conventional PI and SMC-based control designs.
Article
Automation & Control Systems
Jinghang Lu, Bingfu Zhang, Xiaochao Hou, Josep M. Guerrero
Summary: This article presents a distributed control scheme for addressing the issue of voltage unbalance in the sensitive load bus of an AC microgrid. By implementing event-triggered communication, the proposed control strategy effectively compensates for the unbalanced voltage while reducing communication burdens without compromising control performance.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Nabil Mohammed, Abderezak Lashab, Mihai Ciobotaru, Josep M. Guerrero
Summary: This article proposes an accurate reactive power sharing strategy for islanded ac microgrids, considering the mismatched feeder impedances. The strategy optimally adjusts the virtual complex impedance for each inverter, and has advantages such as establishing a relationship between the mismatched values of actual feeders and assigned values for virtual complex impedance, estimating actual feeder impedances online, and being reliable and fault-tolerant.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Energy & Fuels
Amir Basati, Josep M. Guerrero, Juan C. Vasquez, Ahmad Fakharian, Karl Henrik Johansson, Saeed Golestan
Summary: This paper proposes a robust internal model-based voltage control scheme for DC Microgrids (DCMGs) in the presence of unknown external disturbances. The proposed control method includes a modified IMC control and an output feedback H∞ control, which together address the challenge of maintaining voltage reference tracking under measurement noise, delays, model parameter uncertainties and unknown external disturbances. The effectiveness of the proposed control scheme is evaluated through real-time MATLAB/Simulink simulations considering various case study scenarios.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2023)
Article
Mathematics
Upasana Lakhina, Nasreen Badruddin, Irraivan Elamvazuthi, Ajay Jangra, Truong Hoang Bao Huy, Josep M. M. Guerrero
Summary: This paper proposes an enhanced multi-objective multi-verse optimizer algorithm (MOMVO) for stochastic generation power optimization in a renewable energy-based islanded microgrid framework. The algorithm schedules power among different generation sources to minimize generation costs and power losses in the microgrid. Simulation results demonstrate that MOMVO outperforms other metaheuristic algorithms for multi-objective optimization.
Article
Automation & Control Systems
Ali Abdali, Ali Abedi, Kazem Mazlumi, Abbas Rabiee, Josep M. Guerrero
Summary: In this article, a novel formula is proposed to predict the hotspot temperature (HST) of distribution transformers (DTs) by considering the impact of electrical and mechanical parameters on heat dissipation capacity. Complete and accurate 3D modeling based on computational fluid dynamics (CFD) is utilized to validate the proposed formula. Experimental results show that the proposed formula is highly accurate and has a good correlation with empirical values.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Bo Long, Shihan Zhu, Jose Rodriguez, Josep M. Guerrero, Kil To Chong
Summary: The inertia of a power system decreases as more renewable energy is integrated, which poses great challenges to the stability of the power system. A virtual synchronous generator (VSG) has emerged as an effective solution for high distributed generation, but its coupling during power transmission can lead to steady-state errors and dynamic oscillations, limiting the power output capability and grid support ability. To address this issue, this study investigates the power coupling mechanism of VSG and proposes a virtual-inductor and virtual-capacitor control strategy for power decoupling, enhancing the ability to suppress reactive power fluctuations. Simulation and laboratory experiments demonstrate the effectiveness of the proposed decoupling strategy.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Saeed Golestan, Josep M. Guerrero, Abdullah M. Abusorrah, Muhyaddin J. H. Rawa, Juan C. Vasquez, Jose Rodriguez
Summary: This article explains why amplitude and phase estimation loops in many grid synchronization systems are dynamically coupled, and provides guidelines to mitigate this coupling. Several case studies are presented, along with numerical and experimental results to clarify the issue.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Review
Engineering, Electrical & Electronic
Abdelfattah A. Eladl, Samaa Fawzy, Elhossaini E. Abd-Raboh, Akram Elmitwally, Gibran Agundis-Tinajero, Josep M. Guerrero, Mohamed A. Hassan
Summary: Most countries are increasingly exploiting renewable energy resources, particularly wind power, for economic and environmental reasons. However, the high penetration of wind energy in modern electrical networks raises issues such as frequency variation, voltage instability, and transmission capacity limitations. To address these problems, strategies such as spilling wind power or adding dispatchable generation and storage systems have been proposed. This paper provides a comprehensive literature review on the issue of wind power spillage (WPS) and discusses state-of-the-art solutions to minimize WPS while ensuring power system stability and security. The paper also explores real-world applications, challenges, and future trends in the field of WPS research.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)