scholarly journals Prospects of regenerative current breaking in DC circuit breaker topology

2021 ◽  
Vol 10 (3) ◽  
pp. 217
Author(s):  
S. M. Sanzad Lumen ◽  
Ramani Kannan ◽  
Nor Zaihar Yahaya
Keyword(s):  
Power System ◽  
Circuit Breaker ◽  
Normal Operation ◽  
Stored Energy ◽  
Zero Crossing ◽  
Nonlinear Resistor ◽  
Dc Power ◽  
Main Challenge ◽  
Dc Circuit Breaker ◽  
Ac Current

Due to the stunning advancement of power electronics, DC power system is getting immense attention in the field of research. Protection and hereafter the protective devices for the DC power system application are two vital areas that need to be explored and developed further. Designing a protective device such as DC circuit breaker possesses a lot of challenges. The main challenge is to interrupt a current which does not have a natural zero crossing like AC current has. In addition, energy is stored in the network inductances during normal operation. Instantaneous current breaking is opposed by this stored energy during circuit breaker tripping, hence, all the DC circuit breaker topologies proposed in literature use snubber network, nonlinear resistor to dissipate this stored energy as heat during the current breaking operation. However, it is possible to store this energy momentarily and reuse it later by developing an improvised topology. In this paper, the prospects of energy recovery and reuse in a DC circuit breaker was studied and a new topology with regenerative current breaking capability had been proposed. This new topology can feed the stored energy of the network back into the same network after breaking the current and thus can improve the overall system efficiency.

scholarly journals A new direct current circuit breaker with current regeneration capability

2021 ◽  
Vol 12 (4) ◽  
pp. 2322
Author(s):  
S. M. Sanzad Lumen ◽  
Ramani Kannan ◽  
Nor Zaihar Yahaya
Keyword(s):  
Power Systems ◽  
Direct Current ◽  
Normal Load ◽  
Circuit Breaker ◽  
Vital Role ◽  
Normal Operation ◽  
Stored Energy ◽  
Zero Crossing ◽  
Dc Circuit Breaker ◽  
Regeneration Capability

Direct current (DC) power systems are becoming very popular due to better control ability and equipment reliability thanks to the continuous development of power electronics. A DC circuit breaker (DCCB) used for current interruption in a DC network is a major part of the system. It plays the vital role of isolating networks during fault clearing as well as during normal load switching. Breaking the DC current is a major challenge as it does not have any natural zero crossing points like the AC current has. In addition, energy stored in the network inductances during normal operation opposes the instantaneous current breaking. Hence, all the conventional DC circuit breaker topologies use lossy elements to dissipate this stored energy as heat during the current breaking operation. However, it is possible to store this energy and reuse it later by developing an improvised topology. In this paper, the prospects of energy recovery and reuse in DC circuit breakers have been studied, and a new topology with regenerative current breaking capability has been proposed. This new topology can feed the stored energy of the network back into the same network after breaking the current and thus can improve the overall system efficiency.

scholarly journals Operation Characteristics for the Superconducting Arc-Induction Type DC Circuit Breaker

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3897
Author(s):  
Sangyong Park ◽  
Hyosang Choi
Keyword(s):  
Power Systems ◽  
Power System ◽  
Superconducting Magnets ◽  
Circuit Breaker ◽  
Transient State ◽  
Superconducting Magnet ◽  
Power Semiconductors ◽  
Dc Power ◽  
Induction Type ◽  
Dc Circuit Breaker

The multi-terminal direct current network is expected to commercialize while carrying out projects related to DC power systems worldwide. Accordingly, it is necessary to develop a DC circuit breaker required for the DC power system. A DC circuit breaker should be developed to protect the DC power system and the consumer from the transient state on the line in any case. Currently, the use of power semiconductors increases the performance of DC circuit breakers. However, power semiconductors are expensive and suffer series of losses from frequent failures. Therefore, the DC circuit breaker must have a reliable, stable, and inexpensive structure. We proposed a new type of arc-induction type DC circuit breaker. It consists of a mechanical blocking contact, an induction needle and a superconducting magnet. It blows the arc with an induction needle using the Lorentz force according to the high magnetic field of the superconducting magnet. The arc-induction needle absorbs the arc and flows through the ground wire to the ground to extinguish the arc. We established this principle of arc induction as a mathematical model. In addition, the Maxwell program was used to secure data of electric and magnetic fields and apply them to mathematical models. The results obtained through numerical analysis were analyzed and compared. As a result, we confirmed that the magnitude of the force exerted on the electrons between the mechanical contacts with the superconducting magnets increased about 1.41 times and reasoned the arc-induction phenomenon out numerically.

Malfunction Issue of SiC-SIT Based DC Circuit Breaker in 400V DC Power Distribution Systems for Data Centers

2012 ◽  
Vol E95.B (6) ◽  
pp. 1990-1996
Author(s):  
Seiya ABE ◽  
Sihun YANG ◽  
Masahito SHOYAMA ◽  
Tamotsu NINOMIYA ◽  
Akira MATSUMOTO ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Data Centers ◽  
Circuit Breaker ◽  
Power Distribution Systems ◽  
Dc Power ◽  
Dc Circuit Breaker

A Novel Forced Resonant Mechanical DC Circuit Breaker by Using Auxiliary Oscillation Switch for Zero-crossing

2021 ◽  
pp. 1-1
Author(s):  
Lei Qi ◽  
Xilin Chen ◽  
Xinyuan Qu ◽  
Liangtao Zhan ◽  
Xiangyu Zhang ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Zero Crossing ◽  
Dc Circuit Breaker

scholarly journals Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 953 ◽  
Author(s):  
Lukas Tapia ◽  
Igor Baraia-Etxaburu ◽  
Juan José Valera ◽  
Alain Sanchez-Ruiz ◽  
Gonzalo Abad
Keyword(s):  
Solid State ◽  
Power System ◽  
Electric Propulsion ◽  
Circuit Breaker ◽  
Design Guidelines ◽  
Zero Crossing ◽  
Solid State Circuit ◽  
Dc Breaker ◽  
Solid State Circuit Breaker ◽  
Grid Based

Electric propulsion and integrated hybrid power systems can improve the energy efficiency and fuel consumption of different kinds of vessels. If the vessel power system is based on DC grid distribution, some benefits such as higher generator efficiency and lower volume and cost can be achieved. However, some challenges remain in terms of protection devices for this kind of DC grid-based power system. The absence of natural zero crossing in the DC current together with the fast and programmable breaking times required make it challenging. There are several papers related to DC breaker topologies and their role in DC grids; however, it is not easy to find comprehensive information about the design process of the DC breaker itself. In this paper, the basis for the design of a DC solid-state circuit breaker (SSCB) for low voltage vessel DC grids is presented. The proposed SSCB full-scale prototype detects and opens the fault in less than 3 µs. This paper includes theoretical analyses, design guidelines, modeling and simulation, and experimental results.

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