Journal: IEEE Transactions on Dielectrics and Electrical Insulation

Abbreviation

IEEE trans. dielectr. electr. insul.

Publisher

IEEE

Journal Volumes

ISSN

1070-9878
1558-4135

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Publications 1 - 10 of 34
  • Design and Control of an Active Reset Circuit for Pulse Transformers
    Item type: Journal Article
    Bortis, Dominik; Biela, Jürgen; Kolar, Johann W. (2009)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • Theoretical Investigation of HVDC Disc Spacers Charging in SF6 Gas Insulated Systems
    Item type: Journal Article
    Straumann, Ueli; Schüller, Michael; Franck, Christian (2012)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • Influence of impulse voltage repetition frequency on RPDIV in partial vacuum
    Item type: Journal Article
    Meyer, Doris R.; Cavallini, Andrea; Lusuardi, Luca; et al. (2018)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • Design Procedure of a 14.4 kV, 100 kHz Transformer with a High Isolation Voltage (115 kV)
    Item type: Journal Article
    Jaritz, Michael; Blume, Sebastian; Biela, Jürgen (2017)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • Electrical Breakdown Study in CO2 and CO2-O2 Mixtures in AC, DC and Pulsed Electric Fields at 0.1-1 MPa Pressure
    Item type: Journal Article
    Kumar, Siddharth; Huiskamp, Tom; Pemen, A.J.M.; et al. (2021)
    IEEE Transactions on Dielectrics and Electrical Insulation
    In this paper, the results of the experiments performed on electrical breakdown in CO2 and CO2-O2 mixtures in weakly and strongly non-uniform fields generated with impulse (2/160) µs, AC and DC waveforms are presented. In weakly non-uniform fields, the electrical breakdown field approximately follows 11 kV/(cm bar) when stressed with both AC and DC (positive and negative) waveforms. For positive impulse, the breakdown voltage is higher and the time lag to breakdown is scattered, indicating a lack of starting electrons from CO2 gas. Furthermore, the breakdown strength of CO2 - O2 (10-30)% mixtures is investigated. On application of negative polarity impulse, the breakdown strength is significantly higher than positive impulse in the measured pressure range of 0.3-0.7 MPa in strongly non-uniform fields, contrary to that seen during breakdown in weakly non-uniform fields. Breakdown voltage for negative impulse is further enhanced in a mixture of CO2-O2 (80-20)%.
  • Application of Pulsed X-ray Induced Partial Discharge Measurements
    Item type: Journal Article
    Adili, Sedat; Franck, Christian (2012)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • Modeling of Pulse Transformers with Parallel- and Non-Parallel-Plate Windings for Power Modulators
    Item type: Journal Article
    Biela, Jürgen; Bortis, Dominik; Kolar, Johann W. (2007)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • On the Frequency Dependence of the PDIV in Twisted Pair Magnet Wire Analogy in Dry Air
    Item type: Journal Article
    Sefl, Ondrej; Färber, Raphael; Franck, Christian (2023)
    IEEE Transactions on Dielectrics and Electrical Insulation
    This paper presents an experimental verification of a PDIV model for twisted-pair magnet wires (TPMW). The model is physically rooted in an inception criterion based on secondary electron feedback and parametrizes the PDIV of wedge-shaped gas gaps (such as TPMW) solely in terms of its reduced coating thickness—the ratio of coating thickness to its relative permittivity. According to the literature, the coating’s permittivity and thickness should play a significant role in determining the PDIV. Still, no explicit quantification of their concurrent effects is often given, and they are frequently treated as decoupled parameters. Therefore, extensive measurements of PDIV of samples analogous to TPMW coated with dielectric materials of different permittivity (sealed and unsealed alumina, silicone polyester, and perfluoroalkoxy alkane) and thickness (≈45 to 80 μm) are performed. The PDIV of the test samples is determined under sinusoidal test voltage in the frequency between 10 to 60 000 Hz. It is shown that the PDIV can be predicted based on the relative permittivity and thickness of the coating, and the frequency dependence is due only to the change of permittivity with frequency. Temperature and pressure are kept approximately constant at their ambient values (ca. 23 °C & 970 mbar), and only dry air is used to exclude the effect of humidity on the insulation’s permittivity. Ultimately, the role of surface charge is discussed qualitatively by comparing the PDIV with the partial discharge extinction voltage (PDEV) and their repetitive counterparts (RPDIV, RPDEV).
  • Signal Delay Effects of Solid Dielectrics on Time-of-Flight Measurements in GIS
    Item type: Journal Article
    Behrmann, Glen; Wyss, Kris; Weiss, Jonas; et al. (2016)
    IEEE Transactions on Dielectrics and Electrical Insulation
  • Role of Ion Sources for Spacer Charging in SF6 Gas Insulated HVDC Systems
    Item type: Journal Article
    Schueller, Michael; Straumann, Ueli; Franck, Christian (2014)
    IEEE Transactions on Dielectrics and Electrical Insulation
Publications 1 - 10 of 34