Title :
Measurements of space charge distribution up to electrical breakdown and pressure wave generated at electrical breakdown in PP film
Author :
Fukuma, Masumi ; Nagao, Masayuku ; Kosaki, Masamitsu
Author_Institution :
Matsue Coll. of Technol., Japan
Abstract :
Electrical breakdown of a polymer film generates a pressure wave, which is considered to include information about the breakdown initiation point. In this paper, we measure the breakdown pressure wave and the space charge distribution up to electrical breakdown by using a pulse electro-acoustic method in a 30 μm thick polypropylene film. We discuss electrical breakdown phenomena based on the breakdown pressure wave and the dependence of space charge distribution on applied field and temperature. The experimental results suggest that the electrical breakdown phenomena are affected by the hetero space charge accumulation. The initiation point of electrical breakdown corresponds to the position of hereto space charge accumulation in a 30 μm thick polypropylene film
Keywords :
acoustoelectric devices; electric breakdown; insulation testing; organic insulating materials; polymer films; power capacitors; space charge; space charge waves; 30 mum; breakdown initiation point; breakdown pressure wave; electrical breakdown; hetero space charge accumulation; initiation point; polypropylene film; power capacitor insulation; pressure wave generation; pulse electro-acoustic method; space charge distribution; temperature dependence; Charge measurement; Current measurement; Electric breakdown; Electric variables measurement; Polymer films; Pressure measurement; Pulse measurements; Pulsed electroacoustic methods; Space charge; Thickness measurement;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617541
