NDLI: Electrical characteristics of high energy density MLC for pulse power application

Content Provider	IEEE Xplore Digital Library
Author	Ling Dai Fuchang Lin Zhifang Zhu Jin Li
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China (Ling Dai; Fuchang Lin; Zhifang Zhu; Jin Li)
Abstract	High energy density capacitor is a very important component to supply energy in pulse power source. Owing to its high dielectric constant (up to 10/sup 5/ or more), ceramic material is regarded as a sound dielectric for producing high energy density capacitors. With the energy density under the same order of several hundred J/L, ceramic capacitors can endure higher inverse voltage (>70%) and have longer life (shot times >10/sup 6/) compared with metallized film. Multilayer ceramic capacitors (MLC) of low rated voltage have been used for power decoupling and bypass in telecommunication equipments for many years. In this paper, MCL samples of high voltage have been produced, and their electrical characteristics tested in a pulse energy discharge circuit. From the result, the relations between the changes of capacitance, dielectric loss, the charge frequency, and the lifetime have been deduced. The features in discharge wave are also presented. Some failure mechanisms for these capacitors are put forward in this paper. In conclusion, MLC is suitable for making high energy density capacitor, which can endure high reverse voltage, high current and possesses long lifetime.
Starting Page	171
Ending Page	175
File Size	684932
Page Count	5
File Format	PDF
ISBN	0780382900
DOI	10.1109/ELT.2004.1398068
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	High-K gate dielectrics Metallization Capacitors Dielectric materials Dielectric losses Voltage Electric variables Acoustic materials Ceramics Circuit testing
Content Type	Text
Resource Type	Article

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