Some Observations on Loss and Hysteresis of Ferroelectric-Based Ceramic Capacitors

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Abstract

Applying the observed frequency dependence of the equivalent series resistance of ferroelectric-based ceramic capacitors, the value of a parallel resistor that models the losses is extracted for small signal excitation. The result is then used to develop a loss equation of the studied ceramic capacitors, which is found to conform to the Steinmetz equation template. This leads to the conclusion that the small signal hysteresis curves of ferroelectric-based ceramic capacitors do not change with frequency. Based on the derived equations, a figure of merit is proposed to ease the comparison of ferroelectric capacitors with respect to losses.

Original languageEnglish
Article number8330048
Pages (from-to)9127-9129
Number of pages3
JournalIEEE Transactions on Power Electronics
Volume33
Issue number11
DOIs
StatePublished - 1 Nov 2018

Keywords

  • Ceramic capacitors
  • Steinmetz equation
  • dielectric devices
  • dielectric losses

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