Experimental study of a 400 V class DC microgrid for commercial buildings

Noritake, Masatoshi; Yuasa, Kazufumi; Takeda, Takashi; Shimomachi, Kentaro; Hara, Ryoichi; Kita, Hidetoshi; Matsumura, Toshiro

doi:10.1109/icpe.2015.7168011

Cited by 19 publications

(10 citation statements)

References 2 publications

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“…Another voltage level of 380-400 V was investigated in the literature used for the data centers. A 380 V DC test system was presented in [31], which has been constructed in Obihiro, Japan. It was concluded that the system allowed not only the reduction of the environmental load while improving energy efficiency but also the formation of an independent community energy system.…”

Section: Physical Architecturementioning

confidence: 99%

A Review of DC Microgrid Energy Management Systems Dedicated to Residential Applications

et al. 2021

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The fast depletion of fossil fuels and the growing awareness of the need for environmental protection have led us to the energy crisis. Positive development has been achieved since the last decade by the collective effort of scientists. In this regard, renewable energy sources (RES) are being deployed in the power system to meet the energy demand. The microgrid concept (AC, DC) is introduced, in which distributed energy resources (DERs), the energy storage system (ESS) and loads are interconnected. DC microgrids are appreciated due to their high efficiency and reliability performance. Despite its significant growth, the DC microgrid is still relatively novel in terms of grid architecture and control systems. In this context, an energy management system (EMS) is essential for the optimal use of DERs in secure, reliable, and intelligent ways. Therefore, this paper strives to shed light on DC microgrid architecture, control structure, and EMS. With an extensive literature survey on EMSs’ role, different methods and strategies related to microgrid energy management are covered in this article. More attention is centered on the EMS for DC microgrids in terms of size and cost optimization. A very concise analysis of multiple optimization methods and techniques has been presented exclusively for residential applications.

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Section: Physical Architecturementioning

confidence: 99%

A Review of DC Microgrid Energy Management Systems Dedicated to Residential Applications

et al. 2021

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“…F I G U R E 2 Schematic flowchart of the inclusive data review methodology 3.1 | Hybrid AC/DC distribution system for residential and commercial buildings As the electrical loads in buildings become more and more of a direct current nature, 88 it is natural to use direct current as an electrical distribution system in buildings for both residential or commercial areas, 89 in parallel with the classic AC distribution system. 37,38,50,54,[90][91][92] The use of a HDS also facilitates the DG integration via solar PV or wind power and also for the integration of different ESSs such as batteries and supercapacitors. 47 HMGs can be considered as a conception that can bring together DG alternative energy, hybrid storage energy, and residential and/or commercial loads.…”

Section: Applications Of Hybrid Ac/dc Power Distribution and Mgmentioning

confidence: 99%

Efficiency and energy‐loss analysis for hybridAC/DCdistribution 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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“…In addition, the recent growth in Several previous works have prototyped DC plug loads for newly constructed DC buildings in the residential and commercial sectors. Many of these efforts create prototypes for a variety of DC appliances as a means of performing system or microgrid tests [33][34][35][36][37]. Recent research has produced DC prototypes in many end-use categories such as lighting [25,26,[34][35][36][37][38], motor loads [34,36,37,[39][40][41][42], electronics [34][35][36][37]43], and induction cooking [35,44].…”

Section: Motivation For DC Distribution In Buildingsmentioning

confidence: 99%

Energy-saving opportunities of direct-DC loads in buildings

2019

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Despite the recent interest in direct current (DC) power distribution in buildings, the market for DC-ready loads remains small. The existing DC loads in various products or research test beds are not always designed to efficiently leverage the benefits of DC. This work addresses a pressing need for a study into the development of efficient DC loads. In particular, it focuses on documenting and demonstrating how to best leverage a DC input to eliminate or improve conversion stages in a load's power converter. This work identifies how typical building loads can benefit from DC input, including bath fans, refrigerators, wall adapters, task lights, and zone lighting. It then details the development of several prototypes that demonstrate efficiency savings with DC. The most efficient direct-DC loads are explicitly designed for DC from the ground up, rather than from an AC modification.

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Experimental study of a 400 V class DC microgrid for commercial buildings

Cited by 19 publications

References 2 publications

A Review of DC Microgrid Energy Management Systems Dedicated to Residential Applications

A Review of DC Microgrid Energy Management Systems Dedicated to Residential Applications

Efficiency and energy‐loss analysis for hybridAC/DCdistribution systems and microgrids: A review

Energy-saving opportunities of direct-DC loads in buildings

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