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Engineering, Electrical & Electronic
Sajjad Makhdoomi Kaviri, Hadis Hajebrahimi, Behzad Poorali, Majid Pahlevani, Praveen K. Jain, Alireza Bakhshai
Summary: This article presents a new droop-based supervisory-level controller for nanogrids in the islanded mode of operation, which significantly improves the dynamics of power electronic interfaces in NGs by taking into account input-side, output-side parameters, and dc-bus voltage dynamics. Theoretical analysis, simulation results, and experimental results confirm the feasibility and superior performance of the proposed control system.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Albrecht Gensior
Summary: This paper proposes a converter system consisting of parallel-connected two-level voltage source converters and designs corresponding controllers. The controllers control the grid currents and converter currents in two stages using hysteresis controllers, aiming to achieve the desired current distribution. The proposed approach is validated through measurements, with results showing lower semiconductor losses and grid current harmonic distortion compared to a benchmark approach.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Minho Kwon, Sungyoul Park, Chang-yeol Oh, Jongpil Lee, Sewan Choi
Summary: This article proposes a control scheme realized by a unified control loop for smooth and autonomous mode switching between grid-connected and stand-alone modes. The scheme addresses the issues of transient states and uncontrolled states during mode transition, and enables high bandwidth output power control.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
Saban Ozdemir, Necmi Altin, Ibrahim Sefa, Zhen Zhang, Hasan Komurcugil
Summary: This paper presents an effective sliding mode control method based on the super twisting algorithm for three-phase grid-tied three-level neutral point clamped inverters. The proposed method achieves good tracking performance and suppresses chattering while maintaining the robustness and simplicity of sliding mode control. It is also capable of operating with imbalanced and deteriorated grid voltages.
Article
Engineering, Electrical & Electronic
Joseba Erdocia, Andoni Urtasun, Luis Marroyo
Summary: This paper analyzes the performance of inverter-based stand-alone microgrids and proposes a new G-f droop control method to ensure the synchronization stability of the system.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Anil Kumar Pal, Shyam Kamal, Xinghuo Yu, Shyam Krishna Nagar, Bijnan Bandyopadhyay
Summary: This technical note proposes a free-will arbitrary time terminal sliding mode control design, which allows for controlling the time duration of sliding in the sliding phase. It is shown that, under the assumption that the chosen arbitrary time is greater than the reaching phase time, the nth order chain of integrators converges to zero within the selected arbitrary time. An algorithm is also provided for the case when the reaching phase time is unknown to the designer. Stability analysis based on Lyapunov theory is conducted.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Engineering, Electrical & Electronic
Raef Aboelsaud, Ahmed Ibrahim, Ivan Aleksandrov, Ziad M. Ali
Summary: This study proposes a new algorithm based on Finite Control Set Model Predictive Control to improve the Fault Ride-Through capability of stand-alone inverters. By considering multiple aspects and optimizing the calculation method, the algorithm effectively completes fault transitions without compromising performance.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Pradeep Kumar Sahu, Satyaranjan Jena, B. Chitti Babu
Summary: This paper discusses the modeling and control of a stand-alone solar photovoltaic system with battery backup, utilizing a control scheme to improve system efficiency and stability. By designing a control scheme based on sliding mode control, the configuration of the controllers is simplified, while effectively managing system power and maintaining constant voltage.
ELECTRICAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Qingfang Teng, Guorong Xu, Xuewei Zheng, Hao Mai, Xiping Ma, Yanbo Wang
Summary: This paper proposes a new sliding mode observer (SMO)-based compound sliding mode current control (CSMCC) strategy for the single-phase grid-tied inverter system in weak grid. The SMO is designed to estimate the inverter-side current and capacitor voltage of LCL-type filter for feedback control. The CSMCC is composed of equivalent control and reaching law-based second-order nonsingular terminal sliding mode control (NTSMC) to enhance robustness against parameter variations. The strategy also includes active damping and weighted average current-based feedback to suppress resonance and improve grid current quality. Simulation and experimental results demonstrate the effectiveness of the proposed strategy.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Sourav Chakraborty, Susmita Kar
Summary: This paper proposes a hierarchical dual loop voltage and frequency control mechanism to maintain voltage balance and reduce frequency deviation. The secondary control mechanism enables intelligent load management and prioritizes customer thermal comfort. The effectiveness of the proposed method is validated through rigorous simulation and real-time simulation.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2024)
Article
Engineering, Electrical & Electronic
Ahmed Ismail M. Ali, Mahmoud A. Sayed, Takaharu Takeshita
Summary: This paper introduces a new single-phase CTMLI inverter with PWM switching technique and demonstrates its advantages through mathematical modeling and cost estimation.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2021)
Article
Energy & Fuels
Quan-Quan Zhang, Rong-Jong Wai
Summary: This study focuses on the problems of active power sharing and voltage deviation in parallel-connected inverters in an islanded micro-grid. The redesigned power-voltage droop controller and inner voltage regulator based on total sliding-mode control technique achieve high-precision active power sharing and voltage amplitude recovery simultaneously, with faster dynamic response and improved robustness.
Article
Engineering, Electrical & Electronic
Sourav Chakraborty, Susmita Kar, Subhransu Ranjan Samantaray
Summary: This paper presents a hierarchical voltage and frequency control framework for enhancing grid resiliency during peak and off-peak hours. It uses dual loop control mechanisms for maintaining voltage and frequency stability during off-peak hours, and provides additional virtual inertia to reduce overshoot in frequency transient caused by sudden load switching. The secondary control strategy prioritizes intelligent management of thermostatic control loads (TCLs) to ensure customer thermal comfort, with deep-learning based aggregation and control of heating and cooling TCLs to mitigate frequency deviation and manage energy usage during peak hours. Performance assessment is carried out in MATLAB/Simulink, and hardware in loop (HIL) experiments are performed on OPAL-RT to demonstrate the effectiveness of the proposed mechanisms under realistic conditions.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Energy & Fuels
Fatima Ez-zahra Lamzouri, El-Mahjoub Boufounas, Aumeur El Amrani
Summary: This paper presents a novel efficient output power control strategy for an electric generation hybrid system (EGHS), which aims to regulate the hybrid system output power and extend the battery life cycle. By developing an energy management strategy and control law, the proposed strategy demonstrates more robustness and fast response against environmental condition changes compared to the standard sliding mode control (SMC) for power regulation and maximum power conversion.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Automation & Control Systems
Anuoluwapo O. Aluko, Remmy Musumpuka, David G. Dorrell
Summary: This article proposes a cyberattack-resilient scheme for secondary frequency control in a stand-alone microgrid system. The scheme accurately estimates the system states and maintains frequency stability under different cyberattack scenarios.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
