This paper examines existing and future direct current (DC) distribution systems with a wide range of applications in data centers, telecommunication systems, commercial buildings, residential homes, electric vehicles, spacecraft, and aircrafts. DC distribution systems have many advantages and disadvantages over their alternating current (AC) counterparts. There are a few surviving examples of DC distribution systems; among them are the telecommunication systems and data centers that use the low-voltage 48 Vdc systems. However, recently, there has been a move towards higher DC bus voltages. In this paper, a comparative study of different DC distribution architectures and bus structures is presented and voltage level selection is discussed for maximizing system efficiency and reliability, reducing system costs, and increasing the flexibility of the system for future expansion. Furthermore, DC distribution systems are investigated from a safety standpoint and the current global market for these distribution systems is also discussed.
V. A. Prabhala et al., "An Overview of Direct Current Distribution System Architectures & Benefits," Energies, vol. 11, no. 9, MDPI AG, Sep 2018.
The definitive version is available at https://doi.org/10.3390/en11092463
Electrical and Computer Engineering
Intelligent Systems Center
Keywords and Phrases
Bus Structure; Cost; DC Distribution System; Power Architectures; Protection; Reliability; Safety; Voltage Level
International Standard Serial Number (ISSN)
Article - Journal
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01 Sep 2018