Results 181 to 190 of about 16,999 (226)

Hybrid DC circuit breaker based on oscillation circuit

Journal of Power Electronics, 2020
With the rapid development of DC transmission technology, DC circuit breakers, the key equipment for DC fault handling, have become a research hotspot of scholars. This paper proposes a novel hybrid DC circuit breaker topology to improve the shortcomings of traditional hybrid DC circuit breakers.
Yiqi Liu, Tian Xia, Deqing Li
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Modified z-source DC circuit breaker topologies

2014 Clemson University Power Systems Conference, 2014
The Z-source dc circuit breaker has been introduced as a new circuit for quickly and automatically switching off in response to faults. A modified Z-source breaker design is introduced for the operation at medium-voltage dc with future applications in naval ship power systems. Compared to existing designs, the respective design will allow for greater
Atif Maqsood, Allan Overstreet, Keith Corzine   +2 more
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A New Z-Source DC Circuit Breaker

IEEE Transactions on Power Electronics, 2010
A novel type of circuit breaker is introduced for operation at medium-voltage dc with future naval ship power systems as a targeted application. The breaker utilizes a z-source LC circuit in order to automatically commutate a main-path SCR during a fault.
Keith A. Corzine, Robert W. Ashton
openaire   +1 more source

Study on DC Circuit Breaker

2014 Fifth International Conference on Intelligent Systems Design and Engineering Applications, 2014
Unlike ac systems, there is no zero crossing to extinguish the arc that occurs on breaker opening. With the rapid development of EHVDC, VSC-HVDC and DC distribution calling for the use of DC circuit breaker, more and more work has been done in recent years on this aspect.
openaire   +1 more source

Medium voltage DC vacuum circuit breaker

2015 3rd International Conference on Electric Power Equipment – Switching Technology (ICEPE-ST), 2015
The increased use of directed current (DC) as an enabler for the integration of renewable sources gains rising interest also for power transmission and distribution networks. Some preliminary installations showed some benefit of this technique compared with alternating current (AC) and pushed the development of switchgear for high (HV) and medium ...
Lars Liljestrand, Magnus Backman, Lars Jonsson, Edgar Dullni, Marco Riva   +4 more
openaire   +1 more source

Hybrid DC Circuit Breaker Feasibility Study

IEEE Transactions on Components, Packaging and Manufacturing Technology, 2017
Recently, a growing number of dc systems exist based on the development of electrical energy consumption. For low-voltage dc grids, switching devices are needed that have to meet technically sophisticated requirements. These devices have to handle fault currents of several hundred amperes and system voltages up to 1000 V.
Dirk Bösche, Ernst-Dieter Wilkening, Hendrik Köpf, Michael Kurrat   +3 more
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Modeling for series arc of DC circuit breaker

2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA), 2017
In electric distribution systems, a series arc occurs when a load and a power source are disconnected from a connector such as a circuit breaker, a socket–plug, or a coupler. In dc systems, the arc is not extinguished unless the arc current decreases to zero. Sustaining plasma arc current can cause huge fire disasters. To cope with the arc faults in dc
Yong-Jung Kim, Hyosung Kim
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Circuit breaker for DC micro grids

2015 IEEE First International Conference on DC Microgrids (ICDCM), 2015
In order to eliminate power conversion steps, future micro grids with renewable energy sources are being visualized as dc power systems. System components such as sources (solar panels, fuels cells, etc.) loads, and power conversion have been identified and are readily available.
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Solid-state DC circuit breaker [PDF]

, 2016
A high-speed, solid-state circuit breaker is capable of interrupting high DC currents without generating an arc, and it is maintenance-free. Both the switch and the tripping unit are solid-state, which meet precise protection requirements. The high-speed, solid-state DC circuit breaker uses an emitter turn-off (ETO) thyristor as the switch.
openaire  

Self Powered Low Voltage DC Circuit Breaker

2019 National Power Electronics Conference (NPEC), 2019
Short circuit protection remains one of the major technical barriers in DC power system because of the high rate of rise of fault currents and the absence of current zeros. Circuit breaker based on power semiconductor devices have the potential of fast interruption of fault currents.
Rajesh M, Himanshu J Bahirat
openaire   +1 more source