Outputs (9)

Modeling Humidity Impact on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors at Different Temperatures (2023)
Journal Article
Naderiallaf, H., Ji, Y., Giangrande, P., & Galea, M. (2024). Modeling Humidity Impact on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors at Different Temperatures. IEEE Transactions on Dielectrics and Electrical Insulation, 31(3), 1573-1582. https://doi.org/10.1109/tdei.2023.3338138

This paper models the partial discharge inception voltage (PDIV) as a function of ambient humidity ( H ) at various temperatures ( Ts ) using Schumann’s streamer inception criterion (SCSIC) for turn-to-turn insulation, which is the most vulnerable pa... Read More about Modeling Humidity Impact on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors at Different Temperatures.

Air Pressure Impact on the Avalanche Size for Turn-to-Turn Insulation of Inverter-Fed Motors (2023)
Journal Article
Naderiallaf, H., Ji, Y., Giangrande, P., & Galea, M. (2024). Air Pressure Impact on the Avalanche Size for Turn-to-Turn Insulation of Inverter-Fed Motors. IEEE Transactions on Dielectrics and Electrical Insulation, 31(1), 85-94. https://doi.org/10.1109/TDEI.2023.3324287

This paper endeavours to illuminate the variations of various streamer inception parameters (SIPs) with respect to air pressure based on Schumann’s streamer inception criterion (SCSIC). The results based on measured PDIV values and using electric fie... Read More about Air Pressure Impact on the Avalanche Size for Turn-to-Turn Insulation of Inverter-Fed Motors.

Temperature Impact on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors: From Ground Level to Cruising Altitude (2023)
Journal Article
Naderiallaf, H., Ji, Y., Giangrande, P., & Galea, M. (2024). Temperature Impact on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors: From Ground Level to Cruising Altitude. IEEE Transactions on Dielectrics and Electrical Insulation, 31(2), 1044-1053. https://doi.org/10.1109/TDEI.2023.3313569

Considering the turn-to-turn insulation as the most susceptible part to the failure of the electrical machine’s insulation system in inverter-fed motors, this paper aims to elucidate the effect of temperature ( T ) on the streamer inception parameter... Read More about Temperature Impact on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors: From Ground Level to Cruising Altitude.

Assessment of Edgewise Insulated Wire Bend Radius Impact on Dielectric Properties of Turn-to-Turn Insulation through Thermal Ageing (2023)
Journal Article
Naderiallaf, H., Degano, M., & Gerada, C. (2023). Assessment of Edgewise Insulated Wire Bend Radius Impact on Dielectric Properties of Turn-to-Turn Insulation through Thermal Ageing. IEEE Transactions on Dielectrics and Electrical Insulation, https://doi.org/10.1109/TDEI.2023.3309780

This study aims to evaluate the impact of the bending radius of edgewise insulated wires on dielectric properties such as partial discharge inception voltage (PDIV), partial discharge extinction voltage (PDEV), dielectric dissipation factor (DDF), an... Read More about Assessment of Edgewise Insulated Wire Bend Radius Impact on Dielectric Properties of Turn-to-Turn Insulation through Thermal Ageing.

PDIV Modelling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors through Thermal Ageing (2023)
Journal Article
Naderiallaf, H., Degano, M., & Gerada, C. (2023). PDIV Modelling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors through Thermal Ageing. IEEE Transactions on Dielectrics and Electrical Insulation, 1-10. https://doi.org/10.1109/tdei.2023.3307048

This contribution develops the partial discharge inception voltage (PDIV)-FEM-based model based on Schumann’s streamer inception criterion (SCSIC) with respect to thermal ageing time (TAGT) or the insulation lifetime for the turn-to-turn insulation o... Read More about PDIV Modelling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors through Thermal Ageing.

Experimental Comparative Investigation on Alternative and Commercially Available Wire Insulations Based on Partial Discharges Activity (2023)
Presentation / Conference Contribution
Naderiallaf, H., Giangrande, P., & Galea, M. (2023, April). Experimental Comparative Investigation on Alternative and Commercially Available Wire Insulations Based on Partial Discharges Activity. Paper presented at 2023 INSUCON - 14th International Electrical Insulation Conference (INSUCON), Birmingham, United Kingdom

To provide better control, energy efficiency, compactness and improvement of AC motors performance, the employment of power converters has increased during the last decades [1] , [2] . A faster rise time of the repetitive impulsive voltages results i... Read More about Experimental Comparative Investigation on Alternative and Commercially Available Wire Insulations Based on Partial Discharges Activity.

Characterization of PDIV, PDEV and RPDIV in Insulated Wires under Unipolar Repetitive Square Wave Excitations for Inverter-Fed Motors (2023)
Journal Article
Naderiallaf, H., Giangrande, P., & Galea, M. (2023). Characterization of PDIV, PDEV and RPDIV in Insulated Wires under Unipolar Repetitive Square Wave Excitations for Inverter-Fed Motors. IEEE Access, 11, 51047-51063. https://doi.org/10.1109/ACCESS.2023.3279886

The behaviour of partial discharge inception voltage (PDIV), partial discharge extinction voltage (PDEV) and repetitive partial discharge inception voltage (RPDIV) as a function of exposure/poling time under unipolar repetitive square wave excitation... Read More about Characterization of PDIV, PDEV and RPDIV in Insulated Wires under Unipolar Repetitive Square Wave Excitations for Inverter-Fed Motors.

Investigating the Effect of Space Charge Accumulation on Partial Discharge Activity for New and Thermally Aged Glass Fibre Insulated Wire (2023)
Presentation / Conference Contribution
Naderiallaf, H., Giangrande, P., & Galea, M. (2023, April). Investigating the Effect of Space Charge Accumulation on Partial Discharge Activity for New and Thermally Aged Glass Fibre Insulated Wire. Presented at 2023 INSUCON - 14th International Electrical Insulation Conference (INSUCON), Birmingham, UK

In recent years, variable speed drives have been widely employed in aerospace and automotive fields due to their efficiency and versatility benefits. However, electric motors’ reliability remained uncertain when windings are fed by steep-fronted squa... Read More about Investigating the Effect of Space Charge Accumulation on Partial Discharge Activity for New and Thermally Aged Glass Fibre Insulated Wire.

Impact of Unipolar Repetitive Square Wave Voltage Rise Time and Frequency on (RPDIV-PDIV) and (PDIV-PDEV) (2023)
Presentation / Conference Contribution
Naderiallaf, H., Giangrande, P., & Galea, M. (2023, April). Impact of Unipolar Repetitive Square Wave Voltage Rise Time and Frequency on (RPDIV-PDIV) and (PDIV-PDEV). Presented at 2023 INSUCON - 14th International Electrical Insulation Conference (INSUCON), Birmingham, UK

Shorter rise times, faster switching frequencies, and higher DC link voltages are all features of high dV/dt power converters that promote power density and loss reduction . A higher dV/dt increases the risk of partial discharge (PD) between the turn... Read More about Impact of Unipolar Repetitive Square Wave Voltage Rise Time and Frequency on (RPDIV-PDIV) and (PDIV-PDEV).