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The ubiquitous presence of power electronics devices in power conversion applications across various voltage levels creates new challenges for the designers of insulation systems. The stresses applied to insulation systems by power electronics devices require new approaches for evaluating the intensity and frequency content of working electric field strength and degradation processes. Typically these...
The fast switching in PWM drive applications exerts complex transient stresses on the cable and motors, creating conditions for different partial discharge form initiation. The mechanism of surface PD on dielectric materials (ethylene-propylene rubber and thermosetting insulation) under semi square voltage has been investigated. In the rod-plane electrode arrangement positive polarity PWM-like pulses...
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