A fault-tolerant grid-forming converter applied to AC microgrids

Antunes, Hélio M. A.; Silva, Sidelmo M.; Brandão, Danilo I.; Machado, Alysson Augusto Pereira; Ferreira, Reginaldo Vagner

doi:10.1016/j.ijepes.2020.106072

Cited by 19 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A simulation‐based study was carried out on an all‐island Irish transmission system to investigate the minimum requirement for frequency stability when using 100% IBRs based on VSGs in the system [27]. An islanded AC microgrid is used to test a proposed bidirectional GFM converter that has fault tolerance and is applied through a centralized control architecture in [101]. Multiple projects are initiated on the ground, some of which are reported in Table 8 with details related to their capacity and the type of source used with GFM technology [29, 46].…”

Section: Gfm's Real World Demonstrations and Applications In Ibrsmentioning

confidence: 99%

Grid‐forming control for inverter‐based resources in power systems: A review on its operation, system stability, and prospective

Khan,

Wu,

2024

IET Renewable Power Gen

View full text Add to dashboard Cite

The increasing integration of inverter based resources (IBR) in the power system has a significant multi‐faceted impact on the power system operation and stability. Various control approaches are proposed for IBRs, broadly categorized into grid‐following and grid‐forming (GFM) control strategies. While the GFL has been in operation for some time, the relatively new GFMs are rarely deployed in the IBRs. This article aims to provide an understanding of the working principles and distinguish between these two control strategies. A survey of the recent GFM control approaches is also delivered here, expanding the existing classification. It also explores the role of GFM control and its types in power system dynamics and stability like voltage, frequency etc. Practical insight into these stabilities is provided using case studies, making this review article unique in its comprehensive approach. Lacking elsewhere, the GFMs' real‐world demonstrations and their applications in several IBRs like wind farms, photovoltaic power generation stations etc., are also analyzed. Finally, the research gaps are identified, and the prospect of GFM is presented based on the system needs, informed by GFM real‐world projects. This work is a potential road map for the GFM large‐scale deployment in the decarbonized IBR‐based bulk power system.

show abstract

Section: Gfm's Real World Demonstrations and Applications In Ibrsmentioning

confidence: 99%

Grid‐forming control for inverter‐based resources in power systems: A review on its operation, system stability, and prospective

Khan,

Wu,

2024

IET Renewable Power Gen

View full text Add to dashboard Cite

show abstract

“…A general strategy for the FRT capability of IBGs is to make sure that it will not violate its current limit and then propose a control or topology strategy for the faulty condition [119][120][121][122]. Different control techniques, such as modulation index control and de-loading, can be employed to enable the LVRT capability [123].…”

Section: 11mentioning

confidence: 99%

An overview of stability challenges for power‐electronic‐dominated power systems: The grid‐forming approach

Shakerighadi

Johansson

Eriksson

et al. 2022

IET Generation Trans & Dist

View full text Add to dashboard Cite

Inverter-based generators (IBGs) are becoming popular in modern power systems. When the penetration of IBGs is increasing in power systems, new stability, protection, and monitoring challenges are introduced in the grid. Grid-forming (GFM) control of converters is seen as a promising solution for future power grids to overcome particular stability challenges. Here, the technical challenges of the GFM-based IBGs are reviewed from the point of view of TSOs and academic research. The properties of different GFM methods are studied for different GFM-based IBGs for a single grid-tied IBG and using the IEEE 9-bus test system. Simulation results are provided by using the PSCAD-EMT simulation software.

show abstract

“…Besides the traditional three legs/three phase inverter [55,56], as can be seen in Figure 4b, other GFM topologies can be found in the literature related to VSI. One of these topologies is the single-phase full-bridge inverter, as seen in Figure 4a, which is the most common single-phase inverter [57][58][59][60][61]. Research on GFM inverters topology with four-leg, Figure 4c, has grown due to their functionalities and advantages in microgrid applications.…”

Section: Number Of Legsmentioning

confidence: 99%

Grid Forming Inverters: A Review of the State of the Art of Key Elements for Microgrid Operation

et al. 2022

View full text Add to dashboard Cite

In the past decade, inverter-integrated energy sources have experienced rapid growth, which leads to operating challenges associated with reduced system inertia and intermittent power generation, which can cause instability and performance issues of the power system. Improved control schemes for inverters are necessary to ensure the stability and resilience of the power system. Grid-forming inverters dampen frequency fluctuations in the power system, while grid-following inverters can aggravate frequency problems with increased penetration. This paper aims at reviewing the role of grid-forming inverters in the power system, including their topology, control strategies, challenges, sizing, and location. In order to facilitate continued research in this field, a comprehensive literature review and classification of the studies are conducted, followed by research gaps and suggestions for future studies.

show abstract

A fault-tolerant grid-forming converter applied to AC microgrids

Cited by 19 publications

References 23 publications

Grid‐forming control for inverter‐based resources in power systems: A review on its operation, system stability, and prospective

Grid‐forming control for inverter‐based resources in power systems: A review on its operation, system stability, and prospective

An overview of stability challenges for power‐electronic‐dominated power systems: The grid‐forming approach

Grid Forming Inverters: A Review of the State of the Art of Key Elements for Microgrid Operation

Contact Info

Product

Resources

About