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Pulse power capability of high energy density capacitors based on a new dielectric material

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4 Author(s)
Slenes, K.M. ; TPL Inc., Albuquerque, NM, USA ; Winsor, P. ; Scholz, T. ; Hudis, M.

A new dielectric composite consisting of a polymer coated onto a high-density metallized Kraft has been developed for application in pulse power capacitors. The polymer coating is custom formulated for high dielectric constant and strength with minimum dielectric losses. The composite can be wound and processed using conventional wound film capacitor manufacturing equipment. This new system has the potential to achieve 2 to 3 J/cm3 whole capacitor energy density at voltage levels above 3.0 kV, and can maintain its physical properties to temperatures above 175°C. The technical and manufacturing development of the composite material and fabrication into capacitors are summarized in this paper. Energy discharge testing, including capacitance and charge-discharge efficiency at normal and elevated temperatures, as well as DC life testing were performed on capacitors manufactured using this material. TPL (Albuquerque, NM) has developed the material and Aerovox (New Bedford, MA) has used the material to build and test model capacitors. The results of the testing will focus on pulse power applications specifically those found in electromagnetic armor and guns, high power microwave sources and defibrillators

Published in:

Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 1 )

Date of Publication:

Jan 2001

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