Article
Automation & Control Systems
Hasan Komurcugil, Sertac Bayhan, Naki Guler, Haitham Abu-Rub
Summary: This article presents a new exponential reaching law (ERL) approach for sliding mode control, which achieves faster reaching time without using a sign function. An expression of reaching time in terms of reaching law gains is derived. The stability of the proposed reaching law is proven. Experimental results confirm the efficacy of the proposed reaching law for controlling a 5-kW three-phase multilevel multifunction converter under fast-changing nonlinear load currents.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Sabir Ouchen, Mohamed Benbouzid, Frede Blaabjerg, Achour Betka, Heinrich Steinhart
Summary: This article proposes a direct power control (DPC) associated with space vector modulation (SVM) for a shunt active power filter (SAPF), which is able to decrease high active and reactive power ripples. Additionally, supertwisting second-order sliding mode controllers (ST-SMCs) are used to replace PI controllers in the active and reactive power control loops, improving the performance of the proposed scheme. The proposed control DPC-SVM based on ST-SMC is investigated through simulation and practical implementation using MATLAB/Simulink with a real-time interface based on a dSPACE 1104 board.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Cristian Lascu
Summary: This article introduces a novel voltage control scheme for VSCs using sliding-mode control to enhance robustness against load perturbations. The SMC and equivalent control achieve fast response and accurate load regulation.
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
Automation & Control Systems
Yundi Chu, Shixi Hou, Cheng Wang, Juntao Fei
Summary: A continuous fractional order sliding mode controller based on a developed output feedback feature selection neural network (OFFSNN) is studied for an active power filter (APF) to improve power quality. The proposed OFFSNN is adept at adjusting neural structure and parameters by selecting beneficial nodes and deleting useless ones. Experiments on the APF platform demonstrate the effectiveness and superiority of the presented scheme.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Computer Science, Artificial Intelligence
Xiaojie Su, Yao Wen, Peng Shi, Shuoyu Wang, Wudhichai Assawinchaichote
Summary: This article presents a novel continuous-time dynamic sliding mode control method for Takagi-Sugeno fuzzy nonlinear systems based on an event-triggered mechanism. By establishing a new sliding mode dynamic system and utilizing a new Lyapunov function and reciprocally convex method, the asymptotic stability of the constructed network sliding mode dynamics is ensured. The explicit expression of the desired sliding mode controller is given in the form of linear matrix inequalities, and the applicability and effectiveness of the proposed design techniques are demonstrated through a numerical example.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2021)
Article
Engineering, Aerospace
Tinu Valsa Paul, George Vadakkekara Itty, Thirunavukkarasu Indiran
Summary: In this paper, the classical second order sliding mode control is implemented for a nonlinear model of a quadrotor with varied trajectories in a closed loop. The results demonstrate the robustness of the sliding mode controller compared to the nonlinear PID controller.
JOURNAL OF AEROSPACE ENGINEERING
(2023)
Article
Automation & Control Systems
Irfan Sami, Shafaat Ullah, Nasim Ullah, Jong-Suk Ro
Summary: This paper presents a high-performance control system for wind power generation based on fuzzy fractional-order terminal sliding mode control, which achieves a balance between control performance and chattering elimination through the boundary layer approach. Additionally, a novel wind speed estimation technique based on Gaussian process regression is proposed.
Article
Engineering, Electrical & Electronic
Yuxiao Zhang, Ke Dai, Hongwei Xu, Tianyi Liu, Haitao Lin, Ziwei Dai, Yong Kang
Summary: This article presents a 100-kHz sampling and switching frequency shunt active power filter (SAPF) based on a dual-core DSP, which utilizes multithreading and multiprocessing to speed up signal processing, achieve wider current control bandwidth, and broaden the spectrum of harmonic suppression. The proposed SAPF with a higher sampling frequency and multiresolution RDFT strategy can suppress wider frequency harmonics effectively, as verified by a prototype complying with IEEE standard 519-2014.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Wenhai Qi, Xianwen Gao, Choon Ki Ahn, Jinde Cao, Jun Cheng
Summary: The issue of sliding-mode control design for a class of nonlinear semi-Markovian switching systems via T-S fuzzy approach is studied. Novel integral sliding-mode surfaces and a fuzzy SMC law under complex stochastic semi-Markovian switching process are proposed. The theoretical findings are validated through an electric circuit model.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2022)
Article
Automation & Control Systems
Zhen Zhang, Yinan Guo, Dunwei Gong, Jianxing Liu
Summary: In this study, an improved integral sliding-mode control method is proposed to address the difficulties in controlling the drilling of a hydraulic roofbolter. By using a nonlinear extended state observer and an uncertain gain adaptive law, the proposed method achieves better tracking performance and exhibits good dynamic and steady-state performance.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Energy & Fuels
Andrzej Szromba
Summary: This paper presents a simple yet efficient control method for active power filters to improve power quality, which is based on obtaining reference signals indirectly and utilizing closed-loop current control technique, enabling additional functionalities for managing active power in the system.
Article
Automation & Control Systems
Juntao Fei, Lunhaojie Liu
Summary: An adaptive super-twisting SMC using a nonlinear extended state observer based on an interval type-2 fuzzy neural network strategy is proposed to improve the tracking performance of the current controller of APF system. The controller estimates the system states and total disturbance using the IT2FNN-based NESO, and compensates for the total disturbance, including unmodeled dynamics and external disturbances. The ASTW control method is employed to offset the remaining uncertainty and estimation error, and reduce the system chattering.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
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
Engineering, Electrical & Electronic
Laysa L. De souza, Nady Rocha, Darlan A. Fernandes, Reuben P. R. De Sousa, Cursino B. Jacobina
Summary: This article presents a finite-set model predictive control (FS-MPC) method applied to the shunt active power filters (SAPF) with two parallel inverters. The method ensures the sinusoidal shape of the grid current, high power factor, and suppression of circulating and offset currents. The results show that the SAPF with FS-MPC has competitive efficiency and can be applied in industrial and residential applications.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Miguel Castilla, Manel Velasco, Jaume Miret, Angel Borrell, Ramon Guzman
Summary: This article presents a control scheme that solves the problems of negative-sequence voltage compensation and negative-sequence current sharing in grid-connected microgrids. The proposed control scheme improves previous schemes with characteristics such as accurate negative-sequence current sharing and low control-data traffic. Experimental results in a laboratory microgrid validate the characteristics of the proposed control.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
Carlos Alfaro Aragon, Ramon Guzman, Luis Garcia de Vicuna, Jaume Miret, Miguel Castilla
Summary: This article proposes a large-signal model and control method for microgrids. The model does not require direct voltage control and is able to maintain stability under different impedances and loads. Experimental results demonstrate satisfactory performance of the proposed control method in case of load variations and non-linear loads.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Roberto Barrenechea, Luis Garcia de Vicuna, Miguel Castilla, Federico Rypin, Pedro Paiva-Mata
Summary: The primary and secondary distribution grids are typically designed and operated separately, but with the inclusion of distributed generation and optimization of voltage and reliability, the distribution grids will become more interconnected in the future. Load flow algorithms applicable for meshed configurations are needed to avoid singularity problems. This paper presents variations of load flow methods suitable for low and medium voltage grids and compares different convergence criteria.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Automation & Control Systems
Carlos Alfaro, Ramon Guzman, Luis Garcia de Vicuna, Hasan Komurcugil, Helena Martin
Summary: This article introduces a novel distributed direct power sliding-mode control for an islanded AC microgrid, which enhances system robustness, achieves stability, and provides accurate active and reactive power sharing.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Angel Borrell, Manel Velasco, Miguel Castilla, Jaume Miret, Ramon Guzman
Summary: This article presents a novel control scheme for achieving accurate voltage balance in islanded AC microgrids, and it seamlessly integrates with the existing hierarchical control of the microgrid. The proposed scheme compensates for unbalanced loads and avoids the overcurrent stress of a single inverter.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Energy & Fuels
Gabriel Nasser Doyle de Doile, Pedro Paulo Balestrassi, Miguel Castilla, Antonio Carlos Zambroni de Souza, Jaume Miret
Summary: This paper proposes a tool for tuning the parameters of the secondary consensus control for inverter-based islanded microgrids, aiming to improve energy conversion efficiency. Using experimental design methodology, microgrid parameters can be adjusted efficiently to reach the optimal setting, reducing the time and cost of the trial-and-error process.
Article
Engineering, Electrical & Electronic
Jaume Miret, Miguel Castilla, Manel Velasco, Ramon Guzman, Luis Garcia de Vicuna
Summary: In islanded microgrids, a closed-loop control is proposed to ensure maximum current injection during any kind of short circuit while maintaining the underlying droop control. By emulating low-voltage ride-through protocols, voltage unbalance can be reduced. The proposed control strategy is validated through experimental results.
IET POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Hossein Khoun Jahan, Mehdi Abapour, Kazem Zare, Seyed Hossein Hosseini, Frede Blaabjerg, Yongheng Yang
Summary: This paper proposes a switched-capacitor (SC)-based cascaded half-bridge multilevel inverter to address the issues of the cascaded H-bridge multilevel inverter (CMI) in photovoltaic (PV) applications. The proposed topology only requires one dc source and achieves the minimum number of switches, spontaneous capacitor charging, voltage boosting, and continuous input current. The feasibility and effectiveness of the proposed topology are validated through simulations and experimental tests.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Josue Duarte, Manel Velasco, Pau Marti, Antonio Camacho, Jaume Miret, Carlos Alfaro
Summary: This article presents a distributed control strategy for islanded AC microgrids that achieves accurate power sharing and voltage regulation simultaneously. The strategy uses a single controller at each voltage source inverter (VSI) that combines two control loops for decoupled design of power sharing control and voltage control. The cooperative operation of all VSIs through a communication network ensures control objectives are met independently of impedance mismatches and connection/disconnection of inverters and loads. Experimental results validate the proposed control approach.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Miguel Castilla, Jaume Miret, Luis Garcia de Vicuna, Angel Borrell, Carlos Alfaro
Summary: This paper presents a control scheme for grid-forming inverters in islanded microgrids that limits the current to a safe value during short circuits while providing a lower voltage imbalance. The control scheme reduces the reference voltage amplitude and the instantaneous reference voltage to achieve low voltage imbalance. Theoretical and experimental results confirm the improvement in voltage imbalance. The paper also includes control design guidelines and practical performance comparison based on experimental tests.
IET POWER ELECTRONICS
(2023)
