A new decentralized DC power system for telecommunications systems

Mizuguchi, K.; Muroyama, S.; Kuwata, Y.; Ohashi, Yasuo

doi:10.1109/intlec.1990.171225

Cited by 19 publications

(4 citation statements)

References 1 publication

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“…DC Microgrids DC distributed power systems have been widely applied in telecommunication systems [14], electric vehicles [15], and shipboard power systems [16]. Recently, the intensive use of electronic loads in office buildings and commercial facilities, together with the fast growing of Photovoltaic (PV) and fuel cell system, make Low-Voltage DC (LVDC) microgrid become an attractive network solution.…”

Section: Microgrid Configurationsmentioning

confidence: 99%

A Review of Power Electronics Based Microgrids

Wang¹,

Guerrero²,

Blaabjerg³

et al. 2012

Journal of Power Electronics

154

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The increased penetration of Distributed Energy Resources (DER) is challenging the entire architecture of conventional electrical power system. Microgrid paradigm, featuring higher flexibility and reliability, becomes an attractive candidate for the future power grid. In this paper, an overview of microgrid configurations is given. Then, possible structure options and control methods of DER units are presented, which is followed by the descriptions of system controls and power management strategies for AC microgrids. Finally, future trends of microgrids are discussed pointing out how this concept can be a key to achieve a more intelligent and flexible power system.

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Section: Microgrid Configurationsmentioning

confidence: 99%

A Review of Power Electronics Based Microgrids

Wang¹,

Guerrero²,

Blaabjerg³

et al. 2012

Journal of Power Electronics

154

View full text Add to dashboard Cite

show abstract

“…Therefore, the integration of the low-voltage DC (LVDC) system within the AC distribution system can reduce the number of converters. [4][5][6] The LVDC system is a suitable and more cost-effective option for existing medium-voltage AC (MVAC) distribution systems. 7,8 To increase the reliability of the LVDC system, it must be connected to the AC grid through a controlled voltage source converter that provides bidirectional power flow.…”

Section: Introductionmentioning

confidence: 99%

Studying grounding arrangements of the LVDC system through simulation

Shabani

Mazlumi

2018

SIMULATION

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Low-voltage DC (LVDC) systems may soon become an integral part of our electric grid. Faults on DC lines are usually pole-to-ground faults that depend on the grounding arrangement of the DC system. The grounding of the LVDC system is not adequately covered in the literature and there is no comprehensive standard for it. This paper studies the effect of various grounding arrangements of the LVDC system on pole-to-ground fault protection. An overall scheme of the LVDC system is modeled and a pole-to-ground fault is placed on the DC lines. Possible grounding arrangements are analyzed employing MATLAB/Simulink software and detailed discussion is given for each arrangement. Finally, simulation results are compared and a preferred grounding arrangement is selected with the objective of having selective and effective protection without device damage.

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“…The stochastic nature of PV power and dynamic nature of demand forces the energy storage devices connected in the DC microgrid, to smoothen the power flow with high quality. At present, low voltage DC distribution systems are used only in some applications, such as telecommunication equipment with 48 V DC [6], traction systems [7], and shipboard systems [8].…”

Section: Introductionmentioning

confidence: 99%

Intelligent Energy Management System for PV-Battery-based Microgrids in Future DC Homes

Chauhan

Rajpurohit

González-Longatt

et al. 2016

International Journal of Emerging Electric Power Systems

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This paper presents a novel intelligent energy management system (IEMS) for a DC microgrid connected to the public utility (PU), photovoltaic (PV) and multi-battery bank (BB). The control objectives of the proposed IEMS system are: (i) to ensure the load sharing (according to the source capacity) among sources, (ii) to reduce the power loss (high efficient) in the system, and (iii) to enhance the system reliability and power quality. The proposed IEMS is novel because it follows the ideal characteristics of the battery (with some assumptions) for the power sharing and the selection of the closest source to minimize the power losses. The IEMS allows continuous and accurate monitoring with intelligent control of distribution system operations such as battery bank energy storage (BBES) system, PV system and customer utilization of electric power. The proposed IEMS gives the better operational performance for operating conditions in terms of load sharing, loss minimization, and reliability enhancement of the DC microgrid.

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A new decentralized DC power system for telecommunications systems

Cited by 19 publications

References 1 publication

A Review of Power Electronics Based Microgrids

A Review of Power Electronics Based Microgrids

Studying grounding arrangements of the LVDC system through simulation

Intelligent Energy Management System for PV-Battery-based Microgrids in Future DC Homes

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