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Biaxially oriented polypropylene (BOPP) is one kind of the most significant dielectric films for energy storage capacitors. The operating electric field up to 650 kV/mm for the BOPP film can lead to numerous space charge injection, which would be very dangerous to the capacitor. In this investigation, space charge behavior in the BOPP films under various operating temperatures and DC electric fields...
Space charges formed in low-density polyethylene (LDPE) are usually considered to be one of the most important factors in ageing and breakdown mechanism of polymer. But the source of space charge and accumulation process are still ambiguous. In this paper, a polyvinyl fluoride (PVF) film was used as a blocking layer to study the mechanism of space charge injection in LDPE under high direct current...
Packet-like space-charge behavior in low density polyethylene (LDPE) under dc field was reported. It was found that when a high electric field above several kV/mm was applied to LDPE, a large amount of positive packet-like charge was appeared near the anode. The packet-like charge moved towards cathode and disappeared near the cathode. In this paper, a numerical simulation is proposed to discuss the...
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