Pulse type energy storage capacitor

What types of capacitors are used in pulsed discharge circuits?

Capacitors for use in pulsed discharge cir-cuits can be divided into two broad catego-ries. The first category is capacitors that use thin (5.5μm) aluminum foil electrodes to conduct current through the capacitors as shown in Figure 1.

What are the current requirements for pulsed discharge capacitors?

When defining current requirements for pulsed discharge capacitors, it is necessary to consider both the normal and fault condi-tions. If the fault current can be limited to about 10% of the shots and 3 times the nor-mal peak current, the normal conditions will drive the capacitor design.

What is the main energy storage media in km capacitors?

Also, the major energy storage media in the type KM capacitors is Polypropylene while it is PVDF in the type LM capacitors. The list of references has information on the performance of some of the successfully de-ployed metallized electrode capacitor banks. A summary of the equipment discussed in the references is offered in Table 1.

What factors affect the life of a pulsed power capacitor?

One major factor in the life of a pulsed power capacitor is the operating voltage. Here the performance is usually described in terms of a power law where: Where V2 is the operating voltage of interest and V1 is the operating voltage where the life characteristics are known.

Do pulse capacitors need a DC capacitance?

If pulse capacitors are to be used in applications where they are subject to permanent volt-age, this must be taken into consideration in capacitor design. The DC capacitance is the decisive factor for the energy yield. This characteristic is approximately 1.2 times the AC capacitance.

What is a capacitor kHz?

capacitors are commonly found where the pulse rate is in the kHz range. Typically rep-rate applications require that the capacitors operate for life times in the millions of charge/discharge cycles. To accomplish this, the capacitors are run at relatively low energy densities.