Power Electronic Converters in AC Microgrid

Găiceanu, Marian; Arama, Iulian Nicusor; Ghenea, Iulian

doi:10.1007/978-3-030-23723-3_7

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Power converters are the main elements that enable the interconnection of Renewable Energy Sources (RES) and Energy Storage Systems (ESS) with the power grid and microgrids. In addition, to allow the interconnection of the different elements of the microgrid, the PCs are capable of other functions such as guaranteeing the power quality and reliability of the microgrid [2], [13], [14]. The classification of power converters is based on a variety of categories.…”

Section: Power Converters For Microgridsmentioning

confidence: 99%

Power Converters for Microgrids and Distributed Generation Systems

Osorio,

Saavedra-Montes,

Ramos-Paja

et al. 2023

TecnoL.

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This paper presents an overview and critical discussion about the utilization of power converters in several microgrid configurations that incorporate non-conventional renewable energy sources and energy storage. The methodology is developed over 69 works published in this research topic. The papers are selected from databases in electrical engineering, e.g., IEEExplore, ScienceDirect, Springer, MDPI, etc. Then, the papers are classified depending on its focus, i.e., power converters in microgrids or power converters in distribution systems. At least, three classifications are proposed and one of them is made over more than 40 papers about power converters used in microgrids and electric distribution systems. Given the wide variety of microgrids and their configurations, the selection of appropriate power converters for every scenario is not trivial; therefore, this work also classifies the converters in their most common application, their advantages and disadvantages, and also point out the study domain, i.e., simulation or physical implementation. One of the main conclusions made from the overview is a gap identified in the study of direct current/ direct current microgrids despite being the simplest configuration among the three analyzed configurations. This is because hybrid and alternate current microgrids are more widely used since they allow taking advantage of the infrastructure of the current electrical systems.

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Section: Power Converters For Microgridsmentioning

confidence: 99%

Power Converters for Microgrids and Distributed Generation Systems

Osorio,

Saavedra-Montes,

Ramos-Paja

et al. 2023

TecnoL.

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“…The VSIs are supposed to provide correct voltage and frequency into the MG, whereas the CSIs are supposed to inject current into the MG. Many researchers have presented much advance power converters for MGs [9][10][11][12][13], which are not only ensuring the primary role of power converters but also other functions, i.e., fault current handling [11], harmonics suppression, power quality improvement [12], efficiency improvement [13], to make the MG more reliable and sustainable powerhouse. The research works carried out in the literature [14][15] shows the advantages of DC MG over AC MG in terms of reliability, efficiency, protection schemes, and stability.…”

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confidence: 99%

A Comprehensive Review on Power Converters Control and Control Strategies of AC/DC Microgrid

Ansari¹,

Chandel²,

Tariq

2021

IEEE Access

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Owing to the smart lifestyle, environmental consciousness, and dwindling fossil fuel supplies, there is a huge demand for clean and green energy. Microgrid (MG) is a crucial approach to renewable and clean energy. Because of the success of the AC utility grid and the growing demand for critical loads, it is very convenient to provide AC/DC MG that can easily satisfy both the alternating current (AC) MG and the direct current (DC) MG requirements. Due to uncertainty in load variations, main grid failures, intermittent power generations from renewable energy sources (RESs), the synchronization and interconnection of different power converters are the paramount issues in the control of AC/DC MG. This paper presents an overview-oriented state of the art in the recent advancement in control strategies of AC/DC MG and its associated power converters control. Based on recent research, this paper summarizes unobstructed views on different topologies, types of power converters, power converter controls, and control strategies of AC/DC MG. Finally, it identified some future challenges that need to be addressed in order to develop a sustainable and reliable control strategy for AC/DC MG. This paper will serve as a guide for researchers. INDEX TERMS Distributed generation, Microgrids, AC/DC Microgrid, Centralized control, Decentralized control I. INTRODUCTION MGs compromise different RESs, i.e., PV cells, windmills, energy-storing systems (ESS), diesel generator sets, and small hydropower plants, as discussed in the [1,2]. With the advancements in power semiconductor devices, the integration of RESs with leading utility or MG becomes so more accessible. Based on the adopted topology, there are three types of MGs, classified as DC MG, AC MG, and AC/DC MG or hybrid MG [3]. The DC MGs are preferred to supply critical loads like computers, operation theatres, and billing counters. Whereas the AC MGs are preferred in supplying all loads during off-grid or on-grid. The AC/DC MG possesses the characteristics of both DC MG and AC MG. Since begin, in these types of MGs, the power converters are connected in parallel with the MG bus-bar and belong to the parallel topology of MG. Recently a seriescascaded MG topology is being investigated. Inam Ullah Nutkani and et al. in [4] has presented a series-cascaded AC MG topology to integrate the non-dispatchable RESs to the MG and offered its advantages and disadvantages over the parallel topology. Fig.1 shows the different topological advances of MGs.

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