20 kHz Unipolar Pulsed Field Surface Flashover Characteristics of Polymer Nanocomposites in Subatmospheric Pressure Helium

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dc.contributor.authorOzkan, Ali Osman
dc.contributor.authorOzcan, Muciz
dc.contributor.authorAuad, Maria
dc.contributor.authorKirkici, Hulya
dc.date.accessioned2024-02-23T14:45:26Z
dc.date.available2024-02-23T14:45:26Z
dc.date.issued2014
dc.departmentNEÜen_US
dc.descriptionIEEE International Power Modulator and High Voltage Conference (IPMHVC) -- JUN 01-05, 2014 -- Santa Fe, NMen_US
dc.description.abstractThe high performance electrical insulation materials and structures in power systems must be free from unwanted and unpredictable dielectric breakdown through the insulation as well as over the dielectric surfaces, and along the interfaces. Surface flashover, another form of breakdown, usually occurs over the surface of insulator between the energized electrodes, and is usually triggered by the stresses caused by the field at the insulator/electrode/ambient interfaces. Studies of surface flashover at sub-atmospheric pressures are specifically important for aerospace systems and vehicles operating in this regime. In this work we present surface flashover characteristics of two different polymer nanodielectrics filled with either TiO2 or Al2O3 nanoparticles. A 20 kHz pulsed, unipolar field is applied across the electrodes positioned on top of the sample with a 0.5 cm gap distance in sub-atmospheric pressure helium. The plasma characteristics, such as voltage, current and optical emission waveforms are recorded. Breakdown voltage as a function of pressure, frequency and duty cycle of the applied field is presented. Differences between the surface breakdown of TiO2 and Al2O3 filled samples are studied and results are presented. Furthermore, frame-by-frame images of the optical emission during the breakdown events are recorded and presented.en_US
dc.description.sponsorshipIEEE,IEEE Dielectr & Elect Insulat Soc,Dean Technol,Gen Atom,HVR,Matsusada Precis,ScandiNova,BEHLKE,TDK Lamda,Stangenes Ind Inc,Diversified Technol Inc,NWL,Ultra Elect,RFI,FILTRON,Stanley,Pearson Electronics,5S,Continental Elect Corp,Dawonsys,Jema,GMWAssociates,SCHOTT,Barth Elect Inc,BiRa Syst,METEK,TREK,DYNAPOWER Co,e2v,Catonen_US
dc.identifier.endpage453en_US
dc.identifier.isbn978-1-4799-4047-9
dc.identifier.isbn978-1-4673-7323-4
dc.identifier.issn2380-808X
dc.identifier.scopus2-s2.0-84947093837en_US
dc.identifier.startpage450en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12452/17438
dc.identifier.wosWOS:000370659000116en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.relation.ispartof2014 Ieee International Power Modulator And High Voltage Conference (Ipmhvc)en_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectUnipolar Pulsed Fielden_US
dc.subjectNanodielectricsen_US
dc.subjectSurface Flashoveren_US
dc.title20 kHz Unipolar Pulsed Field Surface Flashover Characteristics of Polymer Nanocomposites in Subatmospheric Pressure Heliumen_US
dc.typeConference Objecten_US

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