Improved Control Strategy Of Grid Forming Inverters For Fault Ride Through In A Microgrid System
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Improved Control Strategy Of Grid Forming Inverters For Fault Ride Through In A Microgrid System
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Author :
language : en
Publisher:
Release Date : 2022
Improved Control Strategy Of Grid Forming Inverters For Fault Ride Through In A Microgrid System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
This paper develops an improved control strategy of grid-forming (GFM) inverters with fault ride-through (FRT) capabilities to guarantee the stable operation of microgrids under fault conditions, especially islanded microgrids and asymmetrical faults. The proposed control strategy includes the dual control of positive-sequence and negative-sequence control as well as the adaptive virtual impedance (VI) control. Unlike existing works, the proposed strategy applies the VI control for only the d component of the positive-sequence control and leaves the q component of the positive-sequence control and the dq component of the negative-sequence control as zero, thus achieving improved stability and balanced three-phase voltages under asymmetrical faults. The adaptive feature of the VI control guarantees the stability of the GFM inverter under severe faults, which could cause the saturation of the inner current loop, and the instability if the VI is not adaptive. Simulation results of various unbalanced faults with high and low fault impedances show that the proposed control strategy improves the stability of the GFM inverter and achieves stable and balanced output voltages in islanded microgrids. And the algorithm also improves the stability of GFM inverters under balanced faults with high and low fault impedances.
Improved Control Strategy Of Grid Forming Inverters For Fault Ride Through In A Microgrid System Preprint
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Author :
language : en
Publisher:
Release Date : 2022
Improved Control Strategy Of Grid Forming Inverters For Fault Ride Through In A Microgrid System Preprint written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
This paper develops improved control strategy of GFM inverter with fault ride-through (FRT) capabilities to guarantee stable operation of microgrid under fault conditions especially islanded microgrid and asymmetrical faults. The proposed control strategy includes dual control of positive-sequence and negative-sequence control, and the adaptive virtual impedance (VI) control. Unlike the existing works, the proposed strategy only applies the VI control for the d-component of the positive-sequence control and leaves the q-component of positive-sequence control and dq-component of negative-sequence control zero, thus achieving the improved stability and balanced three-phase voltage under asymmetrical faults. The adaptive feature of the VI control guarantees the stability of the GFM inverter under severe faults which could cause saturated inner current loop and instability if the VI is not adaptive. Simulation results of a phase-to-phase-ground fault show that the proposed control strategy improves the stability of GFM and achieves the stable and balanced output voltages in islanded microgrid.
Grid Forming Converters
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Author : Jingyang Fang
language : en
Publisher: Elsevier
Release Date : 2024-10-29
Grid Forming Converters written by Jingyang Fang and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-10-29 with Technology & Engineering categories.
Grid-Forming Converters: Principles, Control, and Applications in Modern Power Systems is a pioneering guidebook to this state-of-the-art technology and its potential in enabling more-electronics grids and deep renewable integration for the energy systems of the future. Beginning with a clear explanation of the challenges presented for the standard synchronous generator or grid-tied converters by fossil-fuel phase-out and renewable integration, this book goes on to explain the fundamental concepts of grid-forming converters.Having established a solid foundational understanding the reader will learn practical techniques for implementation including design, control, analysis, and optimization. Finally, readers tackle case studies and example applications from energy storage to electric vehicles. From several of the foremost experts and educators in energy systems and power electronics, Grid-Forming Converters is an essential tool for students, professors and engineers working to make renewable-based grids a reality. - Builds a clear, foundational understanding of the technology of grid-forming converters and its importance in resolving the challenges of renewable-based grids - Offers a holistic guide to the operation and implementation of the technology, from design to modeling and optimization - Provides case studies and simulation codes to enable new and emerging applications - Equips the reader to use this pioneering technology for more electronics and the renewable grids of the future
Low Carbon Oriented Market Mechanism And Reliability Improvement Of Multi Energy Systems
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Author : Minglei Bao
language : en
Publisher: Frontiers Media SA
Release Date : 2024-12-17
Low Carbon Oriented Market Mechanism And Reliability Improvement Of Multi Energy Systems written by Minglei Bao and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-12-17 with Science categories.
The energy crisis has brought great challenges to the low-carbon and economic development of the energy system. To achieve net-zero emissions, energy systems can have an increasing penetration of renewable energy and a deep coupling of multiple energy sectors (i.e., electricity, gas, and heat). To deal with the increasing fluctuations of renewable energy in multi-energy systems, the market mechanism is an effective solution for the optimal allocation of resources. An optimal market design could stimulate different resources to actively assist the carbon reduction and reliability improvement of multi-energy systems. Therefore, research on low-carbon-oriented market design and optimal operation is expected to improve the reliability and sustainability of multi-energy systems. The objective of this Research Topic is to explore the latest advances in market design and reliability improvement technologies of multi-energy systems with a focus on low-carbon, reliability, and resilience. We have the following research goals: 1. Effective market mechanisms and interaction frameworks to support the operation of energy systems. 2. Advanced operation and control methods for flexible resources, such as traditional units, energy storage, electric vehicles, electric hydrogen production, etc. 3. Advanced planning strategies and portfolio management for flexible resources in multi-energy systems. 4. Advanced evaluation methods for flexibility, resilience, and carbon emissions of energy systems. 5. Effective applications of integrated demand response in energy systems with new technical and economic models. Original research and review articles in theoretical, methodological, or practical focuses, such as models, policies, algorithms, and applications, are all welcome. Research areas may include (but are not limited to) the following: • Low-carbon-oriented market mechanism • Interaction framework designs for flexible resources • Modeling and optimization technologies for multi-energy systems • Evaluation methods for the system resilience, flexibility, and carbon emissions • Operation, control, and planning methods of multi-energy systems • Applications of artificial intelligence technology in reliability improvement • Renewable energy prediction and integration
Power Electronics Applications In Renewable Energy Systems
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Author : Gilsoo Jang
language : en
Publisher: MDPI
Release Date : 2021-06-04
Power Electronics Applications In Renewable Energy Systems written by Gilsoo Jang and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-04 with Technology & Engineering categories.
The renewable generation system is currently experiencing rapid growth in various power grids. The stability and dynamic response issues of power grids are receiving attention due to the increase in power electronics-based renewable energy. The main focus of this Special Issue is to provide solutions for power system planning and operation. Power electronics-based devices can offer new ancillary services to several industrial sectors. In order to fully include the capability of power conversion systems in the network integration of renewable generators, several studies should be carried out, including detailed studies of switching circuits, and comprehensive operating strategies for numerous devices, consisting of large-scale renewable generation clusters.
Recent Advances In Power Electronics And Drives
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Author : Om Hari Gupta
language : en
Publisher: Springer Nature
Release Date : 2025-01-02
Recent Advances In Power Electronics And Drives written by Om Hari Gupta and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-01-02 with Technology & Engineering categories.
This book entitled “Recent Advances in Power Electronics and Drives - select proceedings of EPREC-2024 provides the rigorous discussions, case studies, and recent developments in the emerging areas of power electronics, especially, power inverter and converter, electrical drives, regulated power supplies, electric vehicle and its charging infrastructure, etc. There are two main problems with the electric vehicle (EVs) technology, which are associated with the range anxiety, charging spot and time. These problems can be taken care of with having a good charging infrastructure, which provides ways to improve the environmental conditions and make sure to mitigate these issues. The same issues would be addressed via this book. The readers would be benefited in enhancing their knowledge and skills in the domain areas. Also, this book may help the readers in developing new and innovative ideas. The book can be a valuable reference for beginners, researchers, and professionals interested in advancements in power electronics and drives.
Community Energy And Microgrids
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Author : Jiefeng Hu
language : en
Publisher: Springer Nature
Release Date : 2024-12-07
Community Energy And Microgrids written by Jiefeng Hu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-12-07 with Technology & Engineering categories.
This book focuses on community energy and microgrids with details including system control, operation, optimization, as well as communication requirements. It provides insight into future community microgrids development for scholars/engineers in academic and industry communities with conceptual illustration, investigations, and examples in the changing energy landscape. The topics covered includes Basic understanding of community energy and microgrids; Overview of cutting-edge technologies in power converter control and distributed power generation; Energy storage systems and electric vehicles in home energy systems; Demand response and fault protection with working principles; Monitoring, communication and control of a microgrid from a practical point of view, toward operational benefit optimization. This book can promote research in renewable energy and future smart grid and motivate the generation of new technologies to address the current challenges. The target audiences include scholars, researchers, students, lab technicians, engineers, managers in both academic and industry broader communities.
Design Power Control Strategies Of Grid Forming Inverters For Microgrid Application Preprint
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Author :
language : en
Publisher:
Release Date : 2021
Design Power Control Strategies Of Grid Forming Inverters For Microgrid Application Preprint written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
This paper compares two control schemes in the application control layer of a non-PLL grid-forming (GFM) inverter to gain the insights and understanding of how the two schemes affect the dynamic responses of the GFM inverters and the transition operation of microgrids. Both schemes can achieve smooth microgrid transition operation and power tracking, however, the first scheme expects to exhibit more transients due to the feedforward of the inverse dynamic model of the output filter. Simulation results show that both control schemes achieve successful transition operation with smooth transients, and the second control scheme exhibits slightly better transients in the system frequency during islanding operation and the first one has slightly superior transients in the system frequency during reconnection operation. The power tracking performance in the grid-connected mode is evaluated, which shows that the first scheme has better active power tracking and the second one has better reactive power tracking. The analysis and results are useful to develop reliable control schemes for non-PLL GFM inverters because more and more inverters will work as non-PLL grid-forming sources in the future grids due to better stability and reliability.
Study Of Inverter Control Strategies On The Stability Of Low Inertia Microgrid Systems Preprint
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Author :
language : en
Publisher:
Release Date : 2022
Study Of Inverter Control Strategies On The Stability Of Low Inertia Microgrid Systems Preprint written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
This paper investigates the stability of low-inertia microgrid systems with two control strategies that have different percentages of grid-forming (GFM) inverters. The first control strategy has approximately 50% GFM inverters, and all the battery inverters are working in GFM control mode. Originally, the second control strategy has approximately 10% GFM inverters, with only two battery inverters working in GFM control mode and the rest working in grid-following (GFL) PQ control mode based on current control, which cannot stabilize the microgrid system. Then, the second control strategy is modified to change the GFM inverters from droop control to isochronous control and the GFL battery inverters from traditional current control to voltage control for power control. Both control strategies can maintain system stability; however, the first control strategy can better handle contingency events. The study indicates that 1) a microgrid system with a higher percentage of GFM inverters has better stability; and 2) a microgrid with a lower percentage of GFM inverters can have poor stability, but improved control strategies in inverters can improve system stability. This study improves the understanding of how different percentages of GFM inverters and inverter control strategies affect the system stability of low-inertia microgrids.
Study Of Inverter Control Strategies On The Stability Of Low Inertia Microgrid Systems
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Author :
language : en
Publisher:
Release Date : 2022
Study Of Inverter Control Strategies On The Stability Of Low Inertia Microgrid Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
This paper investigates the stability of low-inertia microgrid systems with two control strategies that have different percentages of grid-forming (GFM) inverters. The first control strategy has approximately 50% GFM inverters, and all the battery inverters are working in GFM control mode. Originally, the second control strategy has approximately 10% GFM inverters, with only two battery inverters working in GFM control mode and the rest working in grid-following (GFL) PQ control mode based on current control, which cannot stabilize the microgrid system. Then, the second control strategy is modified to change the GFM inverters from droop control to isochronous control and the GFL battery inverters from traditional current control to voltage control for power control. Both control strategies can maintain system stability; however, the first control strategy can better handle contingency events. The study indicates that 1) a microgrid system with a higher percentage of GFM inverters has better stability; and 2) a microgrid with a lower percentage of GFM inverters can have poor stability, but improved control strategies in inverters can improve system stability. This study improves the understanding of how different percentages of GFM inverters and inverter control strategies affect the system stability of low-inertia microgrids.