Article
Engineering, Electrical & Electronic
Rasool Heydari, Hector Young, Freddy Flores-Bahamonde, Sadegh Vaez-Zadeh, Catalina Gonzalez-Castano, Sanaz Sabzevari, Jose Rodriguez
Summary: This article proposes a model-free predictive control scheme to regulate the output voltage of GFI without the knowledge of the physical model.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Shunliang Wang, Junjie Zhou, Ji Shu, Tianqi Liu, Junpeng Ma
Summary: This paper proposes a soft reclosing scheme for voltage source converter based high-voltage direct current (VSCHVDC) systems to address the issue of reclosing current limiting. By investigating a method for selecting the terminal to reclose first, the peak overcurrent during the reclosing process can be minimized. Additionally, an improved hybrid DC circuit breaker (HDCCB) with a soft reclosing module (SRM) is introduced to reduce energy dissipation in the arresters and increase the possibility of successful reclosing. Simulation results demonstrate the effectiveness of the proposed scheme in limiting reclosing overcurrent.
JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY
(2022)
Article
Energy & Fuels
Navid Bayati, Hamid Reza Baghaee, Mehdi Savaghebi, Amin Hajizadeh, Mohsen N. Soltani, Zhengyu Lin
Summary: A new DC fault current limiter-based circuit breaker for DC microgrid clusters is proposed, offering low complexity, cost, and power losses. Time-domain simulation studies in MATLAB/Simulink environment were conducted to assess the performance of the proposed method, validating the analytical expressions and demonstrating the effectiveness of the DC fault current limiting and clearing strategy.
Article
Energy & Fuels
Nikola Simic, Luka Strezoski, Boris Dumnic
Summary: The fault currents in microgrids can fluctuate widely depending on whether they are operating in grid-connected mode or islanded mode. When in islanded mode, the fault current contribution from distributed energy resources (DERs) is significantly lower compared to grid-connected mode. Most DERs are inverter-based, contributing to lower overall fault currents in islanded mode. The differences in fault currents between the two operation modes can have a significant impact on relay protection systems in microgrids.
Article
Energy & Fuels
Sengal Ghidewon-Abay, Ali Mehrizi-Sani
Summary: With the rise of inverter-based resources, controlling grid-connected converters has become crucial. Conventional control methods are sensitive to parameter changes, leading to performance deterioration. This study explores a deep learning-based control method using LSTM networks for a three-phase grid-connected VSC. Simulation results demonstrate that the LSTM-based controller outperforms the conventional controller and maintains stability under different system parameter changes.
Article
Engineering, Electrical & Electronic
Hashim A. Al Hassan, Thamer Alharbi, Zhi-Hong Mao, Brandon M. Grainger
Summary: Improving the design of primary and secondary level controllers of microgrids is crucial for microgrid deployment. This paper presents a reduced order, linear, inverter based, microgrid model and validates its effectiveness through simulation.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Wei Liu, Xiaorong Xie, Jan Shair, Jiaqi Zhang
Summary: This paper presents a novel method to determine the oscillatory stability region of a grid-tied VSC by deriving a variable-operating point impedance model (VOPIM) and determining the frequency and damping of each oscillation mode. The accuracy and effectiveness of the proposed method are verified through time-domain electromagnetic simulations.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Zhihao Wang, Guofang Zhu, Heng Wu, Xuesong Gao, Lei Ding, Xiongfei Wang
Summary: This article proposes a voltage-dependent current reference control scheme that enables a voltage source converter to maintain synchronization with the grid during fault ride-through. By analyzing the changes in grid parameters caused by faults, the control scheme establishes a correspondence between the during-fault and prefault grid parameters. The effectiveness and feasibility of the proposed control scheme are verified through simulation studies and experiments.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Energy & Fuels
Israel D. L. Costa, Danilo I. Brandao, Lourenco Matakas Junior, Marcelo G. Simoes, Lenin M. F. Morais
Summary: This paper compares the effects of different reference frames on AC linear current regulators for three-phase three-wire voltage source converters, finding that the dq-frame has the highest computational effort and inferior performance under negative-sequence voltage disturbances, but superior performance under positive-sequence voltages. In contrast, the abc frame has the lowest computational effort due to its straightforward implementation, with similar results in terms of steady-state and transient behavior, while the alpha beta-frame is an intermediate solution in terms of computational cost.
Article
Engineering, Multidisciplinary
Mahmoud M. Amin, Ahmed S. Soliman, Fayez F. M. El-Sousy, Osama A. Mohammed
Summary: This article presents a new modularized high frequency DC-link integration methodology for connecting multiple renewable energy sources and battery energy storage system to the AC-grid. It proposes a high frequency-based front-end multisource bridgeless boost (MBB) architecture and uses direct-mount decoupling snubber capacitor and soft switching to improve system efficiency.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Youwen Zhang, Xuejun Pei, Zonglin Li, Peng Zhou
Summary: The fast short-circuit fault ride-through capability of the inverter is crucial for the reliability of an independent power supply system. This study proposes a short-circuit fault diagnosis strategy and a current-limiting control strategy to achieve fast short-circuit protection.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Energy & Fuels
Awagan Goyal Rameshrao, Ebha Koley, Subhojit Ghosh
Summary: The complexity of protection task in hybrid microgrid due to sensor placement and communication delay has been addressed through a low-cost protection scheme with optimal sensor placement and immunity against converter faults.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Green & Sustainable Science & Technology
Kunlin Wang, Zhe Wang, Songwei Sheng, Yaqun Zhang, Zhenpeng Wang, Yin Ye, Wensheng Wang, Hongjun Lin, Zhenxin Huang
Summary: In this study, a combination method was implemented to split a high power hydraulic power generation system (HPGS) in a wave energy converter (WEC) into multiple low power HPGSs, aiming to reduce power fluctuations in isolated microgrids. The research results showed that multiple HPGSs have a lower impact on the grid when operating at the same total rated power of the generator. This method has been successfully applied to connect large-scale wave energy converters to isolated microgrids powered by diesel generators.
Article
Engineering, Electrical & Electronic
Saeed Golestan, Esmaeil Ebrahimzadeh, Bo Wen, Josep M. Guerrero, Juan C. Vasquez
Summary: This article focuses on the stability analysis of power electronics-based power systems, exploring different impedance models developed for three-phase VSCs in recent years and the use of advanced three-phase PLLs to address the limited filtering ability of standard SRF-PLL.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Yuntao Ju, Wenwu Liu, Zifeng Zhang, Ruosi Zhang
Summary: A fully distributed power flow calculation method is proposed in this paper, which robustly handles the non-smooth constraints in three-phase AC/DC hybrid networked microgrids, while reducing the dependence on initial values.
IEEE TRANSACTIONS ON SMART GRID
(2022)
Article
Automation & Control Systems
Jian Guo, Zhiqiang Meng, Yandong Chen, Wenhua Wu, Shuhan Liao, Zhiwei Xie, Josep M. Guerrero
Summary: This article proposes an impedance-based approach for stability analysis of droop inverters in an islanded microgrid with unbalanced loads. The harmonic transfer function (HTF) based alpha beta-impedance modeling methods are used to simplify impedance measurement and stability analysis, while preserving the coupling and multiple-frequency characteristics. Experimental results validate the accuracy of the proposed SISO impedance models, which accurately reveal low-frequency oscillations in the islanded microgrid.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yi Zhang, Qiuye Sun, Jianguo Zhou, Josep M. Guerrero, Rui Wang, Abderezak Lashab
Summary: This paper proposes a novel virtual synchronous generator (VSG) controller for converters in AC microgrids (MGs) that improves control cost, DC-side energy requirements, and considers system non-linearity for frequency support. The frequency dynamics of the MG are analytically studied based on the VSG with a secondary frequency controller, and a nonlinear state space representation is formulated. An online adaptive dynamic programming (ADP) method is used to solve the optimal frequency regulation problem, and a single echo state network (ESN) is constructed for approximation to reduce computational burden and improve real-time computation. Simulation results show significant improvement in system frequency response and retention of more DC-side energy.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Green & Sustainable Science & Technology
Vjatseslav Skiparev, Komeil Nosrati, Aleksei Tepljakov, Eduard Petlenkov, Yoash Levron, Juri Belikov, Josep M. Guerrero
Summary: Reducing system inertia and maintaining frequency at nominal value is crucial for the operation, stability, and resilience of today's and future power systems. We propose a variable fractional-order PID controller for virtual inertia control applications, which is tuned online using a modified neural network-based algorithm. The proposed hybrid algorithm captures all tuning knobs of the discrete type and fully tunable variable FOPID controller, combining classical and advanced techniques. Comparative analysis with standard FOPID and PID controllers demonstrates the effectiveness of the proposed controller under different scenarios involving the connection/disconnection of renewable energy sources and loads.
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2023)
Article
Energy & Fuels
Nabil Mohammed, Leonardo Callegaro, Mihai Ciobotaru, Josep M. Guerrero
Summary: Accurate load power sharing and bus voltage regulation are critical for the power quality and reliable operation of DC microgrids. Existing techniques for improving power sharing accuracy through virtual resistance do not consider the relation between virtual resistances and feeder resistance mismatch, leaving room for further enhancement. This paper proposes a strategy that incorporates this relation to achieve accurate power sharing among converters in a DC microgrid. The proposed approach utilizes online estimation algorithms to tune the virtual resistances based on the physical feeder resistances, ensuring robust operation even in scenarios involving communication failures.
Article
Engineering, Electrical & Electronic
Yun Yu, Yajuan Guan, Wenfa Kang, Sanjay K. Chaudhary, Juan C. Vasquez, Josep M. Guerrero
Summary: This letter proposes a novel control scheme by combining fractional-order control and virtual synchronous generator, which involves more degrees of freedom in the controller design. It achieves well-damped power control without oscillations and significantly improves the inertial effect. The feasibility of the proposed scheme is validated by both theoretical and experimental results.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Gaoxiang Li, Fujun Ma, Chuanping Wu, Mingshen Li, Josep M. Guerrero, Man-Chung Wong
Summary: With the application of synchronverter technology in renewable energy power generation, the issue of power system stability becomes more complex. A generalized harmonic compensation control strategy of active power filter (APF) with supercapacitor is proposed to suppress sub-synchronous oscillation (SSO) caused by impedance interaction between the synchronverter based wind farm and the series compensated transmission line. The proposed method does not require prior knowledge of the system oscillation frequency and is validated through experimental results.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2023)
Review
Green & Sustainable Science & Technology
Nur Najihah Abu Bakar, Najmeh Bazmohammadi, Juan C. Vasquez, Josep M. Guerrero
Summary: Cold ironing is a significant electrification innovation in the maritime industry, where diesel engines are switched to shore-supplied electricity during berthing. It serves as a power supply for electric ships and contributes to green port strategies. However, the high upfront costs and unclear benefits have limited its utilization, despite the necessity posed by emission policies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Medicine, Research & Experimental
Gonzalo Martinez-Navajas, Jorge Ceron-Hernandez, Iris Simon, Pablo Lupianez, Sofia Diaz-McLynn, Sonia Perales, Ute Modlich, Jose A. Guerrero, Francisco Martin, Teresa Sevivas, Maria L. Lozano, Jose Rivera, Veronica Ramos-Mejia, Claudia Tersteeg, Pedro J. Real
Summary: Bernard-Soulier syndrome (BSS) is a rare congenital disease characterized by macrothrombocytopenia and frequent bleeding. It is caused by pathogenic variants in three genes (GP1BA, GP1BB, or GP9) that encode for the GPIba, GPIbb, and GPIX subunits of the GPIb-V-IX complex, leading to absent or dysfunctional platelet surface receptors. The use of gene editing tools and lentiviral-based gene therapy vectors has shown promise in understanding and potentially rescuing BSS.
MOLECULAR THERAPY-NUCLEIC ACIDS
(2023)
Article
Engineering, Electrical & Electronic
Jayant Sharma, C. K. Sundarabalan, C. Balasundar, N. S. Srinath, Josep M. Guerrero
Summary: A unified variable regularization factor strategy is proposed in this paper to filter harmonics at the supply side of the distribution system. The proposed algorithm uses a combined regularization affine projection sign algorithm-based control technique, which calculates weight values for the load current's active power and reactive power segments. The algorithm includes a variable mixing factor of two adaptive filters with different regularization parameters, resulting in improved tracking performance, quick convergence, and less steady-state error compared to other filtering schemes.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Yi Yu, Guo-Ping Liu, Yi Huang, Josep M. Guerrero
Summary: The paper presents an optimal distributed data-driven secondary control strategy for voltage restoration and current balancing in DC microgrids. The strategy uses input and output data of DC microgrids to design a controller that incorporates the physical coupling relationship between voltage and current. By using a cost function, the designed control strategy achieves better output current quality at steady state. The strategy combines limiting the voltage reference value generated by the secondary controller and a current cooperative strategy based on the data model to achieve a trade-off between voltage regulation and current sharing.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Computer Science, Artificial Intelligence
Danial Sadrian Zadeh, Behzad Moshiri, Moein Abedini, Josep M. Guerrero
Summary: This paper investigates the effectiveness of state estimation fusion for a synchronous generator and an induction motor to improve system monitoring. A nonlinear state-space model is used for each machine, and a fusion structure based on an internet of things communication network is presented. Simulation results show that combining simple filters with simple data fusion methods can produce more accurate results in a short period of time.
INFORMATION FUSION
(2023)
Article
Engineering, Electrical & Electronic
Jian Sun, Shanwen Tan, Honghao Zheng, Guanqiu Qi, Sen Tan, Deguang Peng, Josep M. M. Guerrero
Summary: This paper proposes a resilient frequency regulation scheme using adaptive vehicle-to-grid technology to reduce the impact of uncertain power fluctuations in electric vehicles and to mitigate the effects of denial of service attacks. The scheme integrates integral sliding mode control and a periodic event-triggered mechanism to improve communication efficiency. An adaptive mechanism for V2G frequency regulation capacity is also proposed to adapt to attack intensity and improve performance under high-intensity attacks.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Energy & Fuels
Xiang Guo, Donghai Zhu, Jiabing Hu, Xudong Zou, Yong Kang, Josep M. Guerrero
Summary: In this paper, a new method called inertial phase-locked loop (iPLL) is proposed for frequency support capability in renewables-dominated power systems. The iPLL introduces inertial and damping loops to emulate the frequency regulation characteristics of a synchronous generator, resulting in a faster frequency response and simpler design and implementation compared to existing methods. The effectiveness of the proposed iPLL method is validated through experiments.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Guangze Shi, Hua Han, Yao Sun, Junlan Ou, Yajuan Guan, Josep M. M. Guerrero
Summary: This study proposes a decentralized second frequency control method for cascaded-type microgrids, which achieves frequency restoration and average power sharing using only local information and is suitable for loads with different characteristics. The control algorithm convergence analysis and control coefficient selection are provided based on the singularity theory. Real-time simulation results verify the feasibility of the proposed method.
IEEE TRANSACTIONS ON POWER SYSTEMS
(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)
