A Repetition Frequency Small Hundred-kilovolt High-Voltage Pulse Capacitor

Abstract

The invention discloses a repetition-frequency miniature high-voltage pulse capacitor (hundreds of kV), and the capacitor comprises a sealed housing and a capacitor disposed in the sealed housing. The capacitor comprises a plurality of folded film capacitors which are connected in series in an integrated manner. The folded film capacitors are set from the top to the bottom. The film capacitors are respectively of a strip-shaped structure, and are respectively formed by the sequential overlapping of an insulating film, an electrode layer, an insulating film, an electrode layer and an insulating film. The folded film capacitors are respectively a film capacitor of the strip-shaped structure, so as to carry out the winding at a fixed diameter. A winding hollow position is provided with insulating oil paper, and the film capacitors and the insulating oil paper are extruded to be flat after winding. The capacitor employs a hybrid insulating mode of a solid insulating film and liquid transformer oil, is excellent in electrical performance, and is wide in working temperature range. The impact on the performance of the capacitor from the environment is small, and the cost is low. The capacitor is shape like a cuboid, and the largest withstand voltage value can reach 150kV. The repetition working frequency is greater than 50Hz, and the service life is greater than 300,000 times.

Description

technical field [0001] The invention relates to the technical field of pulse power, in particular to a small plate-type high-voltage pulse capacitor capable of repeated frequency operation and a working voltage of up to hundreds of kilovolts. Background technique [0002] Due to its instantaneous high power characteristics, pulse power can produce some special effects, and is widely used in nuclear explosion simulation, high-power laser / microwave, particle acceleration, plasma physics and other fields. [0003] The pulse power system is the main means of obtaining pulse power, and its core is energy storage devices and switching devices. Common energy storage devices can be divided into electric field energy storage type, magnetic field energy storage type, chemical energy storage type, inertial energy storage type, etc. according to different principles. The most commonly used ones are capacitors based on the principle of electric field energy storage and magnetic field ene...

AI Technical Summary

Problems solved by technology

However, because metallized film capacitors generate a lot of heat and have poor thermal stability under high current conditions, they are generally rarely used for repetitive frequency operations. The above-mentioned high energy storage density generally corresponds to an operating voltage of about several thousand volts

At present, there are not many studies on high-voltage capacitors used in pulsed power systems, and when the working voltage increases by 10 to 100 times to tens of kilovolts or even hundreds of kilovolts, the energy storage density of capacitors will decrease rapidly due to the performance bottleneck of insulating materials. to kJ level

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