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We investigated the relationship between the space charge accumulation characteristics and the breakdown in a single layer and double layered polyimide films under dc stress using the pulsed electro acoustic (PEA) method. In recent years, there are many examples of multilayered polyimide film is used as the flexible Printed-Circuit Board (PCB) inside an advanced electronic devices. Therefore, it is...
We investigated the relationship between the space charge accumulation characteristics and the breakdown in various combination of multilayered polyimide samples under dc stress using the pulsed electro acoustic (PEA) method. In recent years, there are many examples which a multilayered polyimide film is used as the flexible Printed-Circuit Board (PCB) inside an advanced electronic devices or motor...
The relationship between an electrical breakdown and a space charge accumulation in low-density polyethylene (LDPE) and cross-linked polyethylene (XLPE) was investigated under high dc stress using the pulsed electro-acoustic (PEA) measurement system with a circuit for an external current measurement. It has been found that the space charge accumulation strongly affects the breakdown characteristics...
The current-voltage characteristics and mechanism of bias-induced breakdown in one-dimensional models for band and Mott insulators are investigated theoretically by using nonequilibrium Green’s functions. We attach the models to metallic electrodes, the effects of which are incorporated into the self-energy. For the models of both the band and the Mott insulators with lengths LC, the bias voltage...
Recently, the switching frequency of motors for automotive and railway cars are increased according with the innovation of power semiconductor technology. When the switching speed is increased, so called “inverter surge voltage” is increased, then the coating insulating materials are degraded due to the high voltage phenomena like partial discharge, dielectric heating and space charge accumulation...
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