SU1103307A1 - Multimodule rectifier-capacitor voltage multiplier - Google Patents

Abstract

A MULTI-MODULAR VENTILATING-CONDENSING MULTIPLICATOR VOLTAGE, assembled from n modules, each of which contains charge and discharge capacitors arranged parallel to each other, between which two diodes are installed, characterized in that, in order to increase the electrical strength by reducing the potential difference between adjacent modules, the modules are installed in a series so that the discharge capacitor of the previous module is located next to the charge capacitor of the next module.

Description

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The invention relates to converter equipment, namely, valve-capacitor voltage multipliers, and can be used in instrumentation primarily for powering electron-beam devices with an operating voltage of 20-30 kV.

Valve-capacitor voltage multipliers, made in the form of a matrix with a spatial volumetric array of intersecting valve and capacitor elements 1, are known.

In such a multiplier, the capacitor elements are installed perpendicular to the valve elements, so that U-shaped links are formed. Each half of the U-shaped links of the multiplier is insulated by insulating partitions. Such a capacitor installation provides high electrical strength, but increases the size of the multiplier (high-voltage unit).

This disadvantage also has a voltage multiplier, in which capacitors are installed in two parallel planes, perpendicular to and at an angle to which diodes 2 are installed.

Closest to the invention is a voltage multiplier, which is a box in which modules consisting of capacitor blocks and diodes are placed, the diodes being located between the capacitor blocks parallel to their surface. Items in the box are connected using connectors.

The modules are installed in the box so that the charge capacitors form a single plane, and the discharge capacitors form a second parallel plane along the longitudinal walls of the box. The third parallel plane form diodes 3.

With such an arrangement of the multiplier elements between the ends of two matched capacitors in each plane, a voltage equal to twice the voltage across the capacitor unit is applied. The same voltage is valid between the diodes of the matched modules. For a multiplier containing two rows of series-connected capacitors (charge and discharge, respectively), connected by a chain of diodes, this voltage is equal to four times the amplitude value of the multiplied voltage.

The increased voltage between the elements of the multiplier reduces its dielectric strength and requires improved insulation, which, in turn, increases the size of the device.

The purpose of the invention is to increase the dielectric strength of the multiplier by reducing the potential difference between adjacent modules.

This goal is achieved in that the modules are installed in a series so that the discharge capacitor of the previous module is located next to the charge capacitor of the next module.

FIG. 1. Electric pictured

voltage multiplier circuit; in fig. 2

and 3 schematically shows its structure.

in two projections (front view - Fig. 2,

plan view - FIG. 3).

The multiplier contains charge capacitors 1, discharge capacitors 2, valves (diodes) 3, modules 4 and connectors 5.

The multiplier modules consist of a pair of valves 3, a charge 1 and a discharge 2 capacitors. The valves 3 are located between the capacitors 1 and 2 in parallel with their surfaces (Figs. 2 and 3). The elements in modules 4 and the modules in the high voltage unit are interconnected by means of connectors 5, the role of which can be connected to the terminals of the elements (valves and capacitors).

The multiplier (Figs. 2 and 3) is recruited from modules 4, which are a multiplier by two and which are installed parallel to each other so that the discharge capacitor 2 of one module matches the charge capacitor 1 of the subsequent module, and the modules 4 connected by connectors 5.

Such an arrangement of elements in modules 4 and modules in a multiplier provides the greatest potential between the surfaces of the nearest elements (capacitors 1 and 2), equal to only twice the amplitude value of the multiplied voltage, and requires much less insulation of the matched elements than in the known 0 multipliers, which reduces the cost of multipliers.

Due to the relatively small voltage between the elements in module 4 and between the elements of the coupled modules 4, the electrical strength of the multiplier increases and it becomes possible to bring the elements together and, consequently, reduce the dimensions of the multiplier.

In the proposed valve-condenser multiplier, air insulation can be used, however, to reduce the dimensions of the high-voltage block, it is advisable to fill it with epoxy resin.

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Claims (1)

MULTI-MODULE FAN-CAPACITOR SMART VOLTAGE RESIDENT assembled from η modules, each of which contains charging and discharge capacitors located parallel to each other, between which two diodes are installed, characterized in that, in order to increase the electric strength by reducing the potential difference between adjacent modules, the modules are installed in series row so that next to the charging capacitor of the subsequent module is a discharge capacitor of the previous module.