Results 201 to 210 of about 13,323 (257)
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DC Arc Model Based on 3-D DC Arc Simulation
IEEE Transactions on Industry Applications, 2016DC arc flash hazard assessment is a mounting concern with the recent development of large-scale photovoltaic arrays and dc buses. Currently, there are few methods available to model dc arcs and are largely based on historical arc tests, which may not be suitable for modern dc applications.
Shiuan-Hau Rau, Wei-Jen Lee
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DC arc photography and modelling
Minerals Engineering, 2002Abstract Direct-current arc furnaces operate with a graphite cathode positioned above a molten slag and metal bath contained inside a furnace vessel. The plasma arc, consisting of ionised particles at extremely high temperatures, forms a conducting path between the graphite cathode and the molten bath.
R.T Jones, Q.G Reynolds, M.J Alport
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A Review of Commonly Used DC Arc Models
IEEE Transactions on Industry Applications, 2014The dc arc hazard is a great concern to industry. Quantitative arc hazard assessments are performed on dc systems to determine a nearby worker's potential incident energy exposure during an arcing event. Four viable dc assessment methods are reviewed in this paper.
Tammy Gammon +3 more
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DC-Arc Models and Incident-Energy Calculations
IEEE Transactions on Industry Applications, 2009There are many industrial applications of dc power systems, but only a limited amount of scientific literature addresses the modeling of dc arcs. Since the early dc arc research focused on the arc as an illuminant, most of the early data was obtained from low current dc systems.
Ravel F. Ammerman +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), 2017In 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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A Model for DC Interruption in Diffuse Vacuum Arcs
IEEE Transactions on Plasma Science, 1980A theoretical model for current interruption in a diffuse vacuum arc with dc commutation is described. Before current zero the interelectrode plasma is modeled as an ion-neutral fluid through which electrons are flowing. After current zero a positive ion sheath grows into the plasma from the former anode, driven by the transient recovery voltage. Using
S. E. Childs, A. N. Greenwood
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Modelling of DC arcs for photovoltaic system faults
2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC), 2016Arc faults in a PV system are difficult to study using models developed for conventional power sources mainly due to non-linear behavior of PV current and its dependence on external factors such as irradiance, shading and maximum power tracking controls.
Weerasekara, Madhawa +2 more
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