Title :
Charge-discharge breakdown of dielectric ceramic
Author :
Haishan, Sun ; Shoutian, Chen
Author_Institution :
Northwest Electr. Power Test & Res. Inst., Xian, China
Abstract :
The breakdown behavior of high-voltage dielectric ceramics experiencing long-time charge and discharge cycles is not the same as its short-time breakdown behavior. In our study, it was found that there are about four types of breakdown and various factors such as test voltage, ceramic Curie temperature, epoxy encapsulation, and interface treatments affect the charge-discharge life. The charge-discharge breakdown of high-voltage ceramics is considered mainly a mechanical fatigue failure due to electrostriction, and a simple mathematical model was deduced from this idea
Keywords :
barium compounds; ceramic capacitors; electric breakdown; electrostriction; ferroelectric Curie temperature; ferroelectric ceramics; flashover; high-voltage engineering; BaTiO3; breakdown behavior; ceramic Curie temperature; ceramic capacitor; charge-discharge breakdown; charge-discharge life; electrostriction; epoxy encapsulation; high-voltage dielectric ceramics; interface flashover; interface treatment; life model; long-time charge/discharge cycles; mathematical model; mechanical fatigue failure; test voltage; Breakdown voltage; Ceramics; Dielectric breakdown; Electric breakdown; Electrostriction; Encapsulation; Fatigue; Life testing; Mathematical model; Temperature;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.876408
