scholarly journals An Overview of Direct Current Distribution System Architectures & Benefits

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2463 ◽  
Author(s):  
Venkata Prabhala ◽  
Bhanu Baddipadiga ◽  
Poria Fajri ◽  
Mehdi Ferdowsi
Keyword(s):  
Direct Current ◽  
Distribution Systems ◽  
Data Centers ◽  
Low Voltage ◽  
Global Market ◽  
System Architectures ◽  
Advantages And Disadvantages ◽  
Telecommunication Systems ◽  
Dc Distribution ◽  
Wide Range

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.

scholarly journals Arc Voltage and Current Characteristics in Low-Voltage Direct Current

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2511 ◽  
Author(s):  
Wooho Kim ◽  
Yong-Jung Kim ◽  
Hyosung Kim
Keyword(s):  
Direct Current ◽  
Distribution Systems ◽  
Low Voltage ◽  
Light Emitting ◽  
Dc Distribution ◽  
Source Voltage ◽  
Electric Generation ◽  
Current Characteristics ◽  
Dc Arc ◽  
Current Equation

Recently, Low-Voltage DC (direct current) distribution systems have received high lights according to the expansion of DC generations and DC loads such as photovoltaics (PV) generations, electric vehicles (EVs), light emitting diodes (LEDs), computers, DC homes, etc. Low-Voltage DC distribution systems have optimistic perspectives since DC has various good aspects compared to alternating current (AC). However, ensuring safety of human and electric facility in Low-Voltage DC is not easy because of arc generation and difficulty of arc-extinguishing. This paper constructs a low-voltage DC circuit and studies the arc interruption that occurs when separating electrodes from where load currents flow. Also, arc extinguishers are experimented upon and analysed in various levels of source voltage and load currents conditions. Voltage and current characteristics for arc interruption are identified based on experimental results, and we establish the electric generation for arc interruption. Further, the voltage–current characteristics and the correlation of arc during arc duration time arc are verified, and the voltage–current equation and DC arc resistance model for the breaking arc are developed.

scholarly journals Design and Testing of a Low Voltage Solid-State Circuit Breaker for a DC Distribution System

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 338
Author(s):  
Leslie Tracy ◽  
Praveen Kumar Sekhar
Keyword(s):  
Solid State ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Low Voltage ◽  
Circuit Breaker ◽  
Solid State Circuit ◽  
Dc Distribution ◽  
High Side ◽  
Solid State Circuit Breaker

In this study, a low voltage solid-state circuit breaker (SSCB) was implemented for a DC distribution system using commercially available components. The design process of the high-side static switch was enabled through a voltage bias. Detailed functional testing of the current sensor, high-side switch, thermal ratings, analog to digital conversion (ADC) techniques, and response times of the SSCB was evaluated. The designed SSCB was capable of low-end lighting protection applications and tested at 50 V. A 15 A continuous current rating was obtained, and the minimum response time of the SSCB was nearly 290 times faster than that of conventional AC protection methods. The SSCB was implemented to fill the gap where traditional AC protection schemes have failed. DC distribution systems are capable of extreme faults that can destroy sensitive power electronic equipment. However, continued research and development of the SSCB is helping to revolutionize the power industry and change the current power distribution methods to better utilize clean renewable energy systems.

Control and fault analysis of multiport converters for low voltage DC distribution systems

2021 ◽  
Vol 124 ◽  
pp. 106335
Author(s):  
Simone Negri ◽  
Enrico Tironi ◽  
Gabrio Superti-Furga ◽  
Giovanni Ubezio
Keyword(s):  
Distribution Systems ◽  
Low Voltage ◽  
Fault Analysis ◽  
Dc Distribution

Line Losses and Power Capacity in Low Voltage AC and DC Distribution Systems: a Numerical Comparative Study

2021 ◽  
Author(s):  
Leonardo Nozari da Silva ◽  
Gustavo Scherer Djambolakdjian ◽  
Bruno Alves de Andrade ◽  
Cassiano Souza Krenn ◽  
Larissa Ananda Hansen ◽  
...  
Keyword(s):  
Comparative Study ◽  
Distribution Systems ◽  
Low Voltage ◽  
Power Capacity ◽  
Dc Distribution

Design and evaluation of voltage control techniques by hierarchical coordination of multiple power converters in low-voltage dc distribution systems

2016 ◽  
Author(s):  
Il-Yop Chung Il-Yop Chung ◽  
Phi Hai Trinh Phi Hai Trinh ◽  
H. Cho ◽  
Ju-Yong Kim Ju-Yong Kim ◽  
Jin-Tae Cho Jin-Tae Cho ◽  
...  
Keyword(s):  
Distribution Systems ◽  
Power Converters ◽  
Low Voltage ◽  
Voltage Control ◽  
Control Techniques ◽  
Dc Distribution ◽  
Multiple Power
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