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Energy Losses in Charging and Discharging of Capacitors | IEEE Journals & Magazine | IEEE Xplore

Energy Losses in Charging and Discharging of Capacitors


Abstract:

Analytical expressions are derived for the energy loss incurred in charging and discharging of lossy, i.e. dispersive capacitors under nearly step-function voltage, such ...Show More

Abstract:

Analytical expressions are derived for the energy loss incurred in charging and discharging of lossy, i.e. dispersive capacitors under nearly step-function voltage, such as might be expected in the presence of a finite series resistance and with step-function rise and fall of the voltage. It is shown that the energy loss in the process of charging and discharging may amount to a large fraction of the total stored energy in the capacitor and this may give rise to a significant amount of heating. A physically realistic characteristic function is assumed for the capacitor, corresponding to a frequency-independent pendent loss over a large range of frequencies, such as might be obtained in many low-loss materials.
Published in: IEEE Transactions on Electrical Insulation ( Volume: EI-22, Issue: 4, August 1987)
Page(s): 361 - 364
Date of Publication: 05 February 2007

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