Fevzi Hansu

Prof. Fevzi Hansu

orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 March 2020 in IEEE Transactions on Plasma Science
Verified
Journal Article
Closed access
MAMurat Akdemir
Murat Akdemir
FHFevzi Hansu
Fevzi Hansu
The rapid development of the industry, rapid population growth, and the increase in the number of modern vehicles used lead to excessive energy consumption. For the purpose of meeting this consumption, the majority of energy is produced as a result of the burning of fossil fuels, especially in underdeveloped countries due to the fact that renewable energy sources have not reached the technological maturity yet. In addition, fossil fuels are still used in factories and homes for heating purposes. As a result of the combustion of these fossil fuels, large amounts of toxic gases are emitted into the atmosphere, and these gases have negative effects on the environment and indirectly on living beings. In this study, a new method was proposed to eliminate toxic components of flue gases. No chemical additives or catalysts were used in this study. In the proposed method, the chemical decomposition of SO₂, CO, nitrogen oxide (NOₓ) gases was simultaneously achieved by applying voltages at various frequencies to a specially designed dielectric barrier discharges (DBD) reactor, and in a controlled manner, the conversion of these gases to other various chemical products was carried out. In this study, it was found that a significant part of the gases could be easily separated with the help of DBD plasma without the need for any catalyst or other systems. According to the results, it was observed that the effect of high-frequency plasma charge bombardment was highly effective in the simultaneous decomposition of toxic gas compounds.

1 May 2012 in Applied Mathematics and Computation
Verified
Journal Article
Closed access
BABaris Baykant Alagoz
Baris Baykant Alagoz
HAHafiz Z. Alisoy
Hafiz Z. Alisoy
SASerkan Alagoz
Serkan Alagoz
FHFevzi Hansu
Fevzi Hansu

2 January 2020 in Water, Air, & Soil Pollution
Verified
Journal Article
Closed access
PDF file
MAMurat Akdemir
Murat Akdemir
FHFevzi Hansu
Fevzi Hansu


13 October 2020 in IEEE Transactions on Plasma Science
Verified
Journal Article
Closed access
RSRamazan Solmaz
Ramazan Solmaz
FHFevzi Hansu
Fevzi Hansu
In this study, experimental analysis of current oscillations of semiconductor barrier discharge (SBD) was carried out. In tests, the current oscillations of semiconductor barriers under various strong electric fields in vacuum, air, and nitrogen gas mediums have been investigated. Experiments were carried out by using p- and n-type semiconductor layers, creating single- and double-barrier electrode configurations. In addition, in the study, frequency response of p- and n-type semiconductor layers was investigated in randomly selected 50-, 100-, 200-, 350-, and 500-Hz frequency rates. With the using of experimental data, the voltage-current curves of SBD were created. It was observed that discharge current gives more stable results in Townsend mode. Furthermore, with increasing of test voltage, the discharge passed to the glow mode that contains the formation of unstable current oscillations. When the obtained data were evaluated, it was concluded that medium pressure had a significant effect on the development of SBD at fixed electrode gap. It was seen that current oscillations of semiconductor layers show more stable behavior at low-voltage, low-pressure, and low-frequency values. It has been concluded that electrical breakdown events in semiconductor barriers occur at higher voltage values than the barrier-free system in vacuum medium.

9 January 2024 in Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi
Verified
Journal Article
Open access
PDF file
İAİlker Arı
İlker Arı
FHFevzi Hansu
Fevzi Hansu
The impact of high-frequency voltage/current oscillations on the corona discharge’s ignition and damping in electrical networks were experimentally investigated as part of this study. Internal and external overvoltages caused by short-circuit faults or circuit opening/closing in the generation, transmission and distribution lines cause voltage/current oscillations on the lines at different frequencies. At frequencies of 50, 150, 250, 350, and 500 Hz in different electrode systems such as Sphere-Plane and Needle-Plane, the effects of these oscillations at various frequencies in the networks on the ignition and damping of corona discharges on transmission lines have been investigated. The results showed that the ignition and damping voltages of corona discharges are greatly influenced by high-frequency voltage/current oscillations, and that an increase in the frequency value significantly speeds up the corona discharge’s ignition.