Research on optimal configuration of AC/DC hybrid system integrated with multiport solid-state transforms and renewable energy based on a coordinate strategy

Huang, Lei; Li, Yixue; Cui, Qiong; Xie, Ning; Zeng, Jie; Shu, Jie

doi:10.1016/j.ijepes.2020.105880

Cited by 13 publications

(12 citation statements)

References 52 publications

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“…However, the three-phase unbalance problem can cause adverse impacts on the power quality of the SST [92,93]. Applications that integrated SSTs and DG were studied in [94][95][96].…”

Section: Based On Sstmentioning

confidence: 99%

Comprehensive Analysis of Microgrids Configurations and Topologies

Candelo-Becerra

Santos

2022

Sustainability

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Microgrids have been proposed as a solution to the growing deterioration of traditional electrical power systems and the energy transition towards renewable sources. One of the most important aspects of the efficient operation of a microgrid is its topology, that is, how the components are connected. Some papers have studied microgrid topologies; however, these studies do not perform an exhaustive analysis of the types of topologies, their applications, characteristics, or technical advantages and disadvantages. The contribution of this paper is the integration of the most important functional properties of microgrid topologies in terms of reliability, efficiency, structure, costs, and control methods. The study analyzes 21 topologies divided into six classifications with their respective sub-classifications. The analysis was based on the characteristics of the current (AC or DC), the control mechanisms, the transition between the operating modes, and the operating costs. As a result of the evaluation, it was evidenced that SST-based completely isolated coupled AC topologies, completely isolated two-stage AC decoupled, and multiple microgrids show the best performances. In contrast, the use of two-stage and three-stage partially isolated AC decoupled topologies is not recommended because of their high operating cost and low efficiency and reliability.

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“…However, the three-phase unbalance problem can cause adverse impacts on the power quality of the SST [92,93]. Applications that integrated SSTs and DG were studied in [94][95][96].…”

Section: Based On Sstmentioning

confidence: 99%

Comprehensive Analysis of Microgrids Configurations and Topologies

Candelo-Becerra

Santos

2022

Sustainability

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“…In this context, special attention is paid to the Dual Active Bridge (DAB) (i.e., a bidirectional DC/DC converter with identical full bridges on its primary and secondary side and a high frequency transformer being the set of power electronics responsible for converting MVDC to LVDC in a three-stage SST), the minimization of the core's volume, losses and cost, and the optimal incorporation of the three-stage SST in modern applications [30,31]. Such applications include a wide range of scales, from smart buildings up to entire distribution systems [32][33][34].…”

Section: Interface With the Ac Gridmentioning

confidence: 99%

State of the Art of Low and Medium Voltage Direct Current (DC) Microgrids

et al. 2021

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Direct current (DC) microgrids (MG) constitute a research field that has gained great attention over the past few years, challenging the well-established dominance of their alternating current (AC) counterparts in Low Voltage (LV) (up to 1.5 kV) as well as Medium Voltage (MV) applications (up to 50 kV). The main reasons behind this change are: (i) the ascending amalgamation of Renewable Energy Sources (RES) and Battery Energy Storage Systems (BESS), which predominantly supply DC power to the energy mix that meets electrical power demand and (ii) the ascending use of electronic loads and other DC-powered devices by the end-users. In this sense, DC distribution provides a more efficient interface between the majority of Distributed Energy Resources (DER) and part of the total load of a MG. The early adopters of DC MGs include mostly buildings with high RES production, ships, data centers, electric vehicle (EV) charging stations and traction systems. However, the lack of expertise and the insufficient standards’ framework inhibit their wider spread. This review paper presents the state of the art of LV and MV DC MGs in terms of advantages/disadvantages over their AC counterparts, their interface with the AC main grid, topologies, control, applications, ancillary services and standardization issues. Overall, the aim of this review is to highlight the possibilities provided by DC MG architectures as well as the necessity for a solid/inclusive regulatory framework, which is their main weakness.

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“…Huang et al 140 searched the optimal configuration of the hybrid AC/DC system integrated into multiport solid‐state transformers (SSTs) and DERs according to two criteria which are (a) the operating strategy of SSTs, which aims to reduce the operating loss of SSTs, and (b) the operating strategy of ESSs. Different operating strategies were defined by the authors for the hybrid AC/DC system to form different optimization scenarios.…”

Section: Efficiency and Energy Losses In Hybrid Ac/dc Power Distributionmentioning

confidence: 99%

“…Topology diagram of a hybrid AC/DC system with solid‐state transformer (SST) dual‐machine parallel operation proposed by Reference 140 …”

Section: Efficiency and Energy Losses In Hybrid Ac/dc Power Distributionmentioning

confidence: 99%

Efficiency and energy‐loss analysis for hybrid AC / DC distribution systems and microgrids: A review

Charadi

Chaibi

Redouane

et al. 2021

Int Trans Electr Energ Syst

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Historically, the development and design of distribution systems (DSs) and microgrids (MGs) were based primarily on alternating current (AC) as a traditional approach due to many advantages such as eliminating the need for synchronization, as well as the ease of integrating distributed energy resources (DERs). Recently, given the democratization of DER through local installations of renewable energy systems and appliances using power electronics, direct current microgrids (DC‐MGs) are gaining more and more momentum. In order to enable durable and economically viable use by integrating DC and AC DERs into microgrids, hybrid AC/DC microgrids (HMGs‐AC/DC) present one of the most promising approaches in eliminating the need for AC‐DC or DC‐AC conversions. The improvement of energy efficiency, protection, management, and control of this kind of systems are relevant research topics. This article provides an overview of theoretical works and industrial applications of hybrid AC/DC microgrids/distribution systems. In addition, an efficiency/energy‐losses study of different literature‐based works is discussed. Accordingly, a critical analysis is provided, and research perspectives related to this subject are outlined. This review article can be considered as a guide for future research on the efficiency and energy losses of hybrid AC/DC distribution systems/microgrids.

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Research on optimal configuration of AC/DC hybrid system integrated with multiport solid-state transforms and renewable energy based on a coordinate strategy

Cited by 13 publications

References 52 publications

Comprehensive Analysis of Microgrids Configurations and Topologies

Comprehensive Analysis of Microgrids Configurations and Topologies

State of the Art of Low and Medium Voltage Direct Current (DC) Microgrids

Efficiency and energy‐loss analysis for hybrid AC / DC distribution systems and microgrids: A review

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