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Partial Discharge of Gel Insulated High Voltage Power Modules subjected to Unconventional Voltage Waveforms

A. Madonia ; P. Romano ; Thomas Hammarström (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Stanislaw Gubanski (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; F. Viola ; A. Imburgia
2016 Ieee Conference on Electrical Insulation and Dielectric Phenomena (0084-9162). p. 715-718. (2016)
[Konferensbidrag, refereegranskat]

Performances and duration of the new generation of high voltage power electronic components are dependent on dielectric materials aim to insulating their internal terminals. The presence of defects, some due to faults generated during the manufacturing process, but also due to the internal design of layers and connections, can cause local enhancements of electric field and consequently possible activity of partial discharges phenomena or other effects (aging, tracking) that may result in reduction of device reliability. Furthermore, the usage of unconventional voltage waveforms, like square waves or pulse width modulated waves, additionally increases the electrical aging of the insulation system as compared to conventional sinusoidal waves.

Nyckelord: Partial Discharge, Gel insulation, IGBT, silicone gel, electronics, ina, p1575



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