Short circuit discharge characteristics of the capacitive circuit and its mathematical model
Abstract：The short circuit discharge(SCD) characteristics of the capacitive circuit were analyzed,based on the safety spark test apparatus.It was pointed out that the spark discharge process of the capacitive circuit could be divided into four stages,that is,dielectric-breakdown stage,spark-generated stage,spark-maintenance stage and spark-extinguish stage.A model circuit was proposed to simulate the SCD process of the capacitive circuit.The relationship between the discharging duration and the capacitance as well as the initial capacitor-voltage was studied through the experiments,it was pointed out that the discharging durations becomes longer with the increase of the capacitance,but it isn’t related to the initial capacitor-voltage.The relationship expressions between the discharging duration and the capacitance in each time-stage were deduced with the least-squares method.On the basis of deducing the equivalent resistances in each time-stage,the analytical expressions of the current and voltage of the SCD were obtained,and the mathematical models simulating the SCD process of the capacitive circuit were proposed.Experiments proved the correctness and feasibility of the model.
Keywords：simple capacitance circuitshort-circuit dischargesimulating circuitmathematical model
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 2123-2128 )