Article
Engineering, Electrical & Electronic
Shengqing Li, Shi Yan, Jian Zheng, Na Deng
Summary: A control strategy for automatically regulating the droop coefficient is proposed to address the issue of active power distribution error caused by the difference in output line impedance of parallel inverters in island photovoltaic microgrid. The strategy utilizes active power and reactive power as feedback values and employs reactive power disturbance to compute the sharing error of active power, achieving automatic regulation of the droop coefficient and significantly improving the accuracy of active power sharing.
IEEE SENSORS JOURNAL
(2022)
Article
Computer Science, Information Systems
Jingfeng Mao, Xiaotong Zhang, Tengfei Dai, Aihua Wu, Chunyun Yin
Summary: A new cascade control method based on nonlinear virtual inertia and adaptive backstepping sliding mode is proposed to improve the bus voltage robustness of distributed multi-source DC microgrid. Through mathematical modeling and designing double closed-loop controllers, the feasibility and effectiveness of the proposed method is verified by conducting multi-case simulations in MATLAB/Simulink.
Article
Automation & Control Systems
Bishuang Fan, Qikai Li, Wen Wang, Ganzhou Yao, Haihang Ma, Xiangjun Zeng, Josep Guerrero
Summary: In this article, an adaptive virtual impedance-based droop control strategy is proposed to solve the reactive power sharing problem caused by the difference of line impedance. By introducing the reactive power output and voltage into the controller, a tradeoff between reactive power sharing accuracy and voltage drop can be achieved.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Green & Sustainable Science & Technology
Ahmed Rashwan, Alexey Mikhaylov, Tomonobu Senjyu, Mahdiyeh Eslami, Ashraf M. Hemeida, Dina S. M. Osheba
Summary: This paper presents an innovative solution to the challenge of achieving fast power sharing and stable performance in isolated microgrid (IMG) power systems. The proposed modified droop control effectively dampens low-frequency oscillations, even at higher gain values, improving stability and power sharing. The effectiveness of the proposed controller is validated through time domain simulation analysis, demonstrating significant improvement in system performance.
Article
Engineering, Marine
Hao Chen, Jiajia Li, Ning Gao, Jingang Han, Nadia Ait-Ahmed, Mohamed Benbouzid
Summary: Considering the complexity of marine ship operating environment, higher demands are placed on positioning accuracy and performance of Dynamic Positioning (DP) systems. This paper presents an Adaptive Backstepping Fast Terminal Sliding Mode Control (ABFTSMC) to address low accuracy, slow convergence, and poor anti-interference performance in ship positioning due to uncertain dynamic model parameters and unknown time-varying environmental disturbances. The proposed method combines Fast Terminal Sliding Mode Control (FTSMC) with backstepping techniques to ensure robustness to uncertainties and disturbances, and employs an adaptive law to estimate unknown uncertainty terms. Multiple simulation results demonstrate that ABFTSMC outperforms Adaptive Backstepping Control (ABC) and Adaptive Backstepping Sliding Mode Control (ABSMC), confirming the effectiveness and superiority of the proposed approach.
Article
Energy & Fuels
Ijaz Ahmed, Iftikhar Ahmad, Shahzad Ahmed, Hafiz Mian Muhammad Adil
Summary: Three sliding mode controllers for battery electric vehicle charging units were designed, with the supertwisting sliding mode controller effectively reducing chattering and exhibiting better dynamic performance in G2V mode. Through simulation and hardware in the loop experiments, the robustness and effectiveness of the proposed controller were verified.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Kafeel Ahmed, Irfan Hussain, Mehdi Seyedmahmoudian, Alex Stojcevski, Saad Mekhilef
Summary: Advancements in power conversion efficiency and the growing prevalence of DC loads have highlighted the importance of DC microgrids in modern energy systems. This paper proposes the integration of universal droop control with sliding mode control to enhance distributed energy resource interfacing and power-sharing control in DC microgrids.
Article
Automation & Control Systems
Minh-Duc Pham, Hong-Hee Lee
Summary: The article proposes a coordinated virtual impedance control strategy to compensate for mismatched line impedance among DGs by adjusting both virtual resistance and virtual inductance, enhancing microgrid system stability. The adaptive regulation of virtual impedance ensures good power-sharing performance even with communication interruptions or sudden load changes.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Automation & Control Systems
Hafiz Muhammad Salman Yaseen, Syed Ahmad Siffat, Iftikhar Ahmad, Ali Shafiq Malik
Summary: This paper proposes three nonlinear controllers for position and flux tracking in a magnetic levitation system. Through simulation and comparative analysis, it is found that the adaptive terminal sliding mode control has better performance. The robustness of the proposed controllers is also validated through parameter variations and disturbances.
Article
Mathematics, Interdisciplinary Applications
Shengxin Sun, Yang Zhao, Hao Wu
Summary: This paper investigates how to improve the success rate of space debris capture by proposing two control methods to solve the control problem of a space robot arm. Firstly, a linear sliding mode control method is presented considering model uncertainties and external disturbances. Then, a novel backstepping control method based on a finite-time integral sliding mode disturbance observer is developed to reduce conservativeness and relax restrictions on external disturbances. Simulation examples are provided to demonstrate the effectiveness of the proposed control methods.
Article
Chemistry, Multidisciplinary
Shutong Huang, Ju Jiang, Ouxun Li
Summary: This paper introduces an adaptive sliding mode control scheme for an air-breathing hypersonic vehicle using a new double power reaching law to speed up state stabilization and improve tracking performance. The proposed controller effectively reduces the influence of uncertainties on the AHV, achieving good tracking performance in simulation studies.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Sandy Youssef Rahme, Shirazul Islam, Syed Muhammad Amrr, Atif Iqbal, Irfan Khan, Mousa Marzband
Summary: This paper aims to compensate for the instability caused by EV chargers in a DC microgrid using adaptive sliding mode control (ASMC). The proposed controller adjusts its gain to maintain stability margin during large variations in load demand, ensuring high robustness against changes in charging power demand and without prior knowledge of system bounds.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2023)
Article
Green & Sustainable Science & Technology
Eluri N. V. D. V. Prasad, Mrutyunjaya Sahani, P. K. Dash
Summary: This paper proposes a new adaptive integral back stepping fractional-order sliding mode control (AIBFOSMC) for stabilizing the DC bus voltage in a DC microgrid, and introduces an improved incremental conductance (IIC) based maximum power tracking method (MPPT) for extracting maximum power from the PV and wind systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Automation & Control Systems
Xuanju Dang, Xiaoan Zhao, Chao Dang, Hui Jiang, Xiru Wu, Lantian Zha
Summary: An incomplete differential-based improved adaptive backstepping integral sliding mode control (ID-BIABISMC) is proposed in this paper to enhance the position control accuracy of hydraulic servo systems by addressing non-structural uncertainties such as nonlinear friction. Experimental results demonstrate that the proposed method outperforms traditional control methods in terms of tracking performance.
Article
Automation & Control Systems
Magdi S. Mahmoud, Muhammad Maaruf, Sami El-Ferik
Summary: This paper proposes an adaptive neural network based control method for continuous polymerization reactors, which demonstrates strong robustness and stability, effectively suppresses external disturbances, and eliminates chattering effects.
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)
