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Metalized polypropylene film capacitors (MPPFCs) can work under high electric fields due to the self-healing characteristic. Leakage phenomenon caused by the insulation resistance (IR) in MPPFCs is one of the important factors resulting in the reduction of the energy efficiency. The IR is directly related to the DC electric conduction mechanism in polypropylene film. This paper mainly concentrates...
When the Metallized polypropylene film capacitors (MPPFCs) are used under a high electric field, an obvious voltage decay phenomena will occur. And the voltage decay may finally decrease the practical output energy of the capacitor. This kind of phenomena is not only due to the influence of the dielectric conduction, but also the slow polarization of the dielectric. Due to defects or amorphous regions...
In pulsed power systems, metallized polypropylene film capacitors (MPPFCs) facilitate the operation of the polypropylene film with a relatively small margin to its dc breakdown strength. The insulation resistance (IR) is one of the important factors that result in the reduction of the energy efficiency, as it represents a current leakage path through the dielectric. This paper concentrates on the...
In order to get the relationship between conductivity or polarization and electric field and to measure the capacitive current and the resistive current respectively, under periodic wave, a decomposition method is proposed. The leakage current can be decomposed to get the relation between conductivity or polarization and electric field. Under periodic stimulation, and by making use of the change of...
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