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capacitor for marx generator
来源: | 作者:Amanda -cheng | 发布时间: 2021-11-13 | 259 次浏览 | 分享到:
the main requirements for the capacitor are the total energy storage is large, the energy storage density is high, and its inherent inductance is low.

In this type of high-voltage equipment of Marx generator, the main requirements for the capacitor are the total energy storage is large, the energy storage density is high, and its inherent inductance is low. Because the charging time of the Max generator to the transmission line is required to be short, the Marx circuit must be low inductance, and the inductance of the capacitor is also one of the main components of the loop inductance. At the same time, need a smaller size and light weight high voltage capacitor, because when the size is too large, a larger inductance will be introduced into the discharge circuit. 

In order to obtain a large current output, a large-capacity capacitor is required. Among the high-voltage capacitors, the paper-oil insulated capacitor has the largest capacity. In order to improve the working field strength, castor oil insulating medium is used in some modern capacitors with high voltage and large energy storage density. Paper-oil insulated capacitors are composed of many aluminum foils and capacitor paper wound into a cylindrical shape and squashed. 

In order to increase the capacitors, many units are connected in parallel to form a group. In order to increase the working voltage, many groups are connected in series. The inductance of the capacitor decreases proportionally with the increase of the number of units in each group, and increases with the increase of the number of groups. Paper and plastic dielectric capacitors have larger inductance and resistance. In some important applications, these parameters must be clarified. When the capacitor is discharged, reverse voltage and reverse current will appear. In the application, the allowable reverse voltage and current value should not be exceeded. It must be carefully designed during using.


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