Results 61 to 70 of about 325 (124)

Evaluation of existing DC protection solutions on the performance of an active LVDC distribution network under different fault conditions [PDF]

, 2017
Low Voltage Direct Current (LVDC) distribution is one of the new promising technologies that has been introduced for the integration of renewables and powering certain applications.
Burt, Graeme, Emhemed, Abdullah, Norman, Patrick, Wang, Dong   +3 more
core  

High‐Current Cryogenic DC Solid‐State Circuit Breaker for Electric Aircraft

IET Electric Power Applications
Cryogenic and superconducting technologies have great potential to significantly enhance the power density and efficiency of electric propulsion aircraft.
Zhongying Wang, Jiawen Xi, Xianwu Zeng, Emelie Nilsson, Jean‐francois Rouquette, Edwin Calderon, Ravi Kiran Surapaneni, Ludovic Ybanez, Xiaoze Pei   +8 more
doaj   +1 more source

A DC SSCB With Range-Limited Parallel Operation Switches and a Snubber Circuit Utilizing Inverse Current Injection

IEEE Access
Although many snubber circuits have been studied, research on circuits that effectively suppress surge voltage while supporting bidirectional operation remains relatively limited.
Jae-Seong Jo, Sun-Pil Kim, Sang-Hyeok Lee, Sung-Geun Song, Feel-Soon Kang   +4 more
doaj   +1 more source

Solid-State Circuit Breaker Topology Design Methodology for Smart DC Distribution Grids with Millisecond-Level Self-Healing Capability

Energies
To address the challenges of prolonged current isolation times and high dependency on varistors in traditional flexible short-circuit fault isolation schemes for DC systems, this paper proposes a rapid fault isolation circuit design based on an adaptive ...
Baoquan Wei, Haoxiang Xiao, Hong Liu, Dongyu Li, Fangming Deng, Benren Pan, Zewen Li   +6 more
doaj   +1 more source

Logic-controlled solid state switchgear for 270 volts dc [PDF]

A feasibility study to design and demonstrate solid state switchgear in the form of circuit breakers and a power transfer switch is described. The switchgear operates on a nominal 270 V dc circuit and controls power to a load of up to 15 amperes.
Buchanan, E. E., Jr., Sundberg, G. R., Waddington, D.   +2 more
core   +1 more source

Maturing DC protection methods for the more-electric aircraft [PDF]

, 2015
With the increasing electrification of modern aircraft designs, there is a growing dependence on the aircraft’s electrical power system for safe flight.
Burt, G. M., Fletcher, S. D. A., Fong, K., Galloway, S. J., Norman, P. J.   +4 more
core  

Comparison of Surge Voltage Reduction and Economic Efficiency of DC SSCBs According to MOV and RCD Snubber Combination

IEEE Open Journal of the Industrial Electronics Society
Metal oxide varistor (MOV) is a nonlinear resistive element whose resistance decreases rapidly when the applied voltage exceeds a threshold value. A dc solid-state circuit breaker (SSCB) uses MOVs or MOV with resistor-capacitor-diode (RCD) snubber ...
Seong Jin Lim, Sung-Geun Song, Guangxu Zhou, Feel-Soon Kang   +3 more
doaj   +1 more source

Integration of Superconducting Fault Current Limiter and DC Circuit Breaker for Electric Aircraft DC Network [PDF]

Large-scale electric aircraft are a promising technology that could revolutionise air travel to reduce the environmental impact. Fault current limitation and interruption technology is crucial to realise the safety and reliability of the electric ...
Hu, Jintao, Nilsson, Emelie, Pei, Xiaoze, Rouquette, Jean Francois, Wang, Zhongying, Xi, Jiawen, Ybanez, Ludovic, Zeng, Xianwu   +7 more
core   +1 more source

DC-SSCB Snubber for Electric Propulsion Ships With Effective Surge Voltage Reduction and Fast Dissipation of Fault Current Energy

IEEE Access
This paper proposes a snubber circuit for SSCB that performs voltage clamping operation in two stages to reduce surge voltage. The surge voltage is suppressed in the first stage using a MOV with low operating initiation and clamping voltages.
Jae-Hun Cha, Guangxu Zhou, Sung-Geun Song, Feel-Soon Kang   +3 more
doaj   +1 more source

Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance [PDF]

Current-limiting strategies for solid-state circuit breaker (SSCB) without adding impedance is introduced in this paper. With the current limitation of novel phase-shifting method, the advantages are simple hardware structure, relatively low cost, no ...
Castellazzi, Alberto, Effah, Francis Boafo, Gu, Chunyang, Watson, Alan James, Wheeler, Patrick   +4 more
core