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During the last decade, insulated-gate bipolar transistorbased electronic devices have increasingly been adopted to control the power supply of drives associated with Type I randomwound rotating machines, and new reliability problems have surfaced [1]. Pulse width modulator drives that are associated with these machines produce voltage waveforms having fast rise time fronts, and overvoltages at the...
This work is aimed at investigating the effect of voltage harmonics on electrical treeing inside cross linked polyethylene (XLPE). The study focus on the partial discharge (PD) activity associated to electrical treeing, which changes with the harmonic content of the supplied voltage. Different frequency components have been superimposed to a sinusoidal basic waveform and have been applied to suitable...
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