Browsing NTNU Open by Author "Abid, Fahim"
Now showing items 1-11 of 11
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Arc Voltage Characteristics in Ultrahigh-Pressure Nitrogen Including Supercritical Region
Abid, Fahim; Niayesh, Kaveh; Jonsson, Erik; Støa-Aanensen, Nina Sasaki; Runde, Magne (Journal article; Peer reviewed, 2017)A supercritical (SC) fluid is formed when both pressure and temperature of a fluid exceed the critical point, where distinct gas and liquid phases no longer exist. SC fluids demonstrate combined properties of gas and liquid, ... -
Arc Voltage Distribution Measurement in Tube Constricted Ultrahigh-Pressure Nitrogen Arc
Abid, Fahim; Niayesh, Kaveh; Støa-Aanensen, Nina Sasaki (Chapter, 2020)This work contributes to the fundamental understanding of axial voltage distribution of the arc burning inside polytetrafluoroethylene (PTFE) tube at very high filling pressures of nitrogen. The arc peak current of 85 A ... -
Characteristics of Switching Arc in Ultrahigh-pressure Nitrogen
Abid, Fahim (Doctoral thesis, 2020)An increasing number of wind farms and mining operations located far off the coast will lead to the development of offshore substations. To avoid the large costs associated with platforms and floaters, such a substation ... -
Characterization of Ultrahigh Pressure Nitrogen Arc Using Black Box Arc Model
Abid, Fahim; Niayesh, Kaveh (Journal article; Peer reviewed, 2023)In this paper, the effect of filling pressure on the black box arc parameters of nitrogen arc is reported using Mayr arc model. The arc current is approximately 130 A at 190 Hz. The filling pressure is varied at absolute ... -
Current interruption performance of ultrahigh-pressure nitrogen arc
Abid, Fahim; Niayesh, Kaveh; Espedal, Camilla; Støa-Aanensen, Nina Sasaki (Peer reviewed; Journal article, 2020)In this paper, the influence of gas filling pressure on the current interruption performance of different switch configurations with electric arcs burning in nitrogen has been experimentally investigated. A synthetic circuit ... -
Effect of Filling Pressure on Post-Arc Gap Recovery of N2
Abid, Fahim; Niayesh, Kaveh; Viken, Egil; Støa-Aanensen, Nina Sasaki; Jonsson, Erik; Meyer, Hans Kristian Hygen (Peer reviewed; Journal article, 2020)Experimental investigation of the effect of filling pressure on the post-arc dielectric recovery characteristics of nitrogen is reported in this paper. A half-cycle arc current duration of 540 μs followed by a 10 kV pulse ... -
Metal vapor content of an electric arc initiated by exploding wire in a model N2 circuit breaker: simulation and experiment
Kadivar, Ali; Niayesh, Kaveh; Abid, Fahim (Peer reviewed; Journal article, 2020)A conductive wire can explode by rapidly heating it to vaporization temperature by flowing a current through it. This process is utilized to generate high-temperature high-density plasmas. The temperature and pressure ... -
Nozzle Wear and Pressure Rise in Heating Volume of Self-blast Type Ultra-high Pressure Nitrogen Arc
Abid, Fahim; Niayesh, Kaveh; Støa-Aanensen, Nina Sasaki (Journal article; Peer reviewed, 2019)This paper reports on experiments with ultra-high pressure nitrogen arcs in a self-blast type switch design. The effect of filling pressure on nozzle mass loss and pressure-rise in the heating volume is investigated. An ... -
Post-arc Dielectric Recovery Characteristics of Free-burning Ultrahigh-Pressure Nitrogen Arc
Abid, Fahim; Niayesh, Kaveh; Støa-Aanensen, Nina Sasaki (Chapter, 2019)This work contributes to the fundamental understanding of post-arc dielectric recovery characteristics of free-burning nitrogen arcs as a function of gas filling pressure. Arc peak current of 425 A at a frequency of 925 ... -
Thermal interruption performance of ultrahigh-pressure free-burning nitrogen arc
Abid, Fahim; Niayesh, Kaveh; Thimmappa, Shashidhara Basavapura; Espedal, Camilla; Støa-Aanensen, Nina Sasaki (Chapter, 2020)In this paper, an experimental investigation of the thermal interruption performance of free-burning nitrogen arcs at 1 bar, 20 bar, and 40 bar filling pressures is reported. This work contributes to the fundamental ... -
Ultrahigh-Pressure Nitrogen Arcs Burning Inside Cylindrical Tubes
Abid, Fahim; Niayesh, Kaveh; Støa-Aanensen, Nina Sasaki (Journal article; Peer reviewed, 2018)When the pressure and temperature of a fluid exceed a critical point, the fluid enters into the supercritical (SC) region. In this region, the physical properties are believed to be in favor of a good current interruption ...