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- W3135285905 abstract "The introduction of SiC-based components in the electromechanical chain presents numerous advantages, but has consequences on the reliability of the insulation systems in the machine. For switching frequencies up to 5 kHz, and dV/dt varying from 15 to 30 kV/µs, a system lifetime of around 40 years (or 200 000 hours) must be guaranteed. The question that arises is to know what margin insulation systems of the current equipment have. It is thus necessary to determine whether, under normal operating conditions, phenomena that did not previously exist or were not completely apprehended will appear with the transition to SiC-based inverters. One of these phenomena is Partial Discharge (PD) and its development in machines, and more precisely in the turn-to-turn, turn-to-ground, and phase-to-phase insulation systems. Therefore, the objective of the thesis is to study the influence of the electrical stress imposed by SiC-based components on the insulation of machines. To do so, a first phase of electrical stress identification allows accounting for the constraints undergone by the machine. In a second phase, these constraints are reproduced on representative samples, which are thus subject to accelerated aging, in order to establish aging laws and to study the degradation of the insulation systems under stress." @default.
- W3135285905 created "2021-03-15" @default.
- W3135285905 creator A5038065504 @default.
- W3135285905 date "2020-11-09" @default.
- W3135285905 modified "2023-09-24" @default.
- W3135285905 title "Determination and influence of the existence of partial discharges in a railway traction system using SiC-based components" @default.
- W3135285905 hasPublicationYear "2020" @default.
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