Charging source for high-voltage capacitor

Abstract

The invention discloses a charging source for a high-voltage capacitor. The charging source comprises a low-voltage rectifying circuit, a bridge type inverter circuit, a resonance circuit, a boosting transformer and a high-voltage rectifying circuit, wherein the low-voltage rectifying circuit is used for performing AC / DC conversion on alternating current to output direct current voltage; the bridge type inverter circuit and the resonance circuit are used for performing resonant conversion on the direct current voltage to output bipolar voltage pulse; the boosting transformer and the high-voltage rectifying circuit are used for converting the bipolar voltage pulse into unipolar voltage pulse to charge the high-voltage capacitor; the bridge type inverter circuit consists of RSD (removable storage device) switch units; and each RSD switch unit comprises an RSD heap, a reverse pick-off diode, a reverse protection diode, a first saturable magnetic switch and an RSD pre-charging circuit, and the RSD heap is formed through series connection and / or parallel connection of one or more RSD devices. The charging source for the high-voltage capacitor can effectively improve the charging efficiency of the high-voltage capacitor, shortens the charging time, and is small in size and low in cost.

Description

technical field [0001] The invention belongs to the technical field of energy storage element charging, and more particularly relates to a high-voltage capacitor high-frequency constant-current charging power supply based on an RSD device. Background technique [0002] High-voltage pulse discharge equipment has a wide range of applications in the fields of environmental protection, electric power, manufacturing, military, high-energy physics, and high-energy lasers. For example, in the environmental protection industry, it is used for electrostatic dust removal, sewage treatment and waste treatment; in the power system, it is used in the limit overcurrent capacity test equipment of high-voltage electrical equipment; in industrial manufacturing, it is used for electromagnetic induction processing, etc. The energy storage elements of high-voltage pulse discharge equipment in the above application fields mostly use high-voltage capacitors, and the charging power supply for high...

AI Technical Summary

Problems solved by technology

However, when charging a large-capacity high-voltage capacitor, the structure of the IGBT device causes the current capacity of the IGBT device to be much smaller than that of a thyristor of the same price, and the charging current of the high-voltage capacitor is small

To meet the requirements of high charging power and short charging time, expensive imported large-capacity IGBT devices must be used, and the equipment cost is very high

Images