SU1520637A1 - Static ferromagnetic frequency multiplier - Google Patents

Abstract

The invention relates to electrical engineering and can be used in high frequency power sources. The purpose of the invention is to simplify the design and reduce weight and size parameters. The device contains ferromagnetic cores located on the sides of an equilateral devagon. A three-phase primary winding and a three-phase secondary winding are formed covering a series of core 1 cores. Single-phase secondary winding is located on the Rma 2 magnetic circuit. The three-phase secondary winding is connected in a star or delta and is made in each phase in the form of series-according to the connected three identical sections. A single-phase secondary winding is made according to open-circuit diagonal circuits. Sections of each phase of the three-phase secondary winding are located on the cores shifted in space relative to each other by an angle equal to 120 degrees. The invention makes it possible to obtain at the output of the voltage device a tripled and abrasive frequency. This uses the minimum number of cores, reduces the volume and mass of the primary winding, eliminates inter-core clearance, and more fully utilizes the core windows. 1 hp f-ly, 5 ill.

Description

- fas. 2

The invention relates to electrical engineering and can be used in power supplies with a current of increased frequency.

The purpose of the invention is to simplify the design and reduce the weight and size parameters.

Figure 1 shows a frequency multiplier with a third-harmonic output voltage, a general view; FIG. 2 is the same with the output voltage of the ninth harmonic; Fig. 3 is a diagram of the connection of the winding sections of the main and triple frequency; FIG. 4 is a circuit for connecting a section of the windings of the main and ninth harmonics; Fig. 5 is a diagram of the connection of a three-phase secondary winding with capacitors.

The static ferromagnetic frequency multiplier (Figures 1 and 2) contains a magnetic core in the form of a closed deviagon, on the sides of which the cores are located. Primary DCs, BCs and secondary three-phase windings,,, W with the output voltage of three times the frequency are located on the corresponding K-rods x 1, formed by coupled sides of a number of spaced cores. The secondary single-phase windings W of the ninth harmonic are located on the frames 2 magnetic cores. The capacitors C are connected in delta and connected to the windings Wj, W,, Wj (FIG. 5) „

The device works as follows.

When connecting the primary windings of the frequency multiplier Idc, W, Wcj- (K) located on rods x 1 of fig 1, connected in a star or triangle pattern, to a source of three-phase voltage due to the non-linearity of the magnetization curve of the core odd harmonics appear. There are odd harmonics in the magnetic flux curve, which are absent in the field strength curve. Therefore, on the secondary windings W, W, W, ... located on the rods of the magnetic circuit (Fig 1) and connected according to the star or the third square (Fig. 3), there is a three-phase distortion system only the third harmonic. On the secondary windings WQ, located on the frames 2 magnetic circuits (figure 2) and connected to an open

the quadrant (Fig. 4), the single-phase voltage of only the ninth harmonic appears.

To create the core pattern, the number of turns of the primary windings is determined by the sine law. With such a ratio of the numbers of vkov, the magnetic flux of the main harmonic in the rods joined by the lateral sides of a number of spaced cores is shifted in phase by

2V

os -Q- | defined by the spike of the location of the rods in space.

The magnetic fluxes of the cores are determined by the difference in the magnetic fluxes of the individual frames.

 f.

Ca

 I.

c - - P & c, where Pd b f c are magnetic fluxes of rods;

A. A. - RVS R. F

R

SB Sun

 magnetic flux frames.

The base number of turns of the windings is determined from the ratio

W,

.

9 B ;; ,, S (

where E is the amplitude of the EMF winding;

magnetic induction amplitude, flux in the core;

cross section of the core rod;

c.

± | G-o6

- the angle of shear between the mass flows in the rods of two adjacent cores. With such a ratio of the number of turns, the output voltage of the secondary windings made covering the / cores of a number of spaced cores contains only the third harmonic. The implementation of secondary windings spanning adjacent, arranged twisted cores halves their number. . eliminating the inter-core gap, reducing the volume and mass of the primary winding, more complete use of cores. This allows us to simplify the design of the multiplier, leads to saving of active materials, reducing the mass and size: indicators.

Connecting the three-phase secondary winding of the transformers to the capacitors allows regulation of the output voltage.

Claims (1)

Formula invented and. 1, Static ferromagnetic frequency attenuator containing a magnetic wire formed by ferromagnetic cores located on the sides of an equilateral diagonus, located on the core terminals of a three-phase primary windings connected in a star or triangle that, in order to simplify the design, reduce the mass and size parameters, the other secondary winding is single-phase with the output voltage of the ninth harmonic, the sections of which are arranged one at a time, the corresponding three-phase secondary winding in each phase includes three connected series-consonant sections and are made up of cores joined by lateral sides, adjacent to each other; and made across a number of paC -IS boards, with the winding sections flat core cores, as well as two secondary windings, each of which consists of series-according to the connected identical sections, one of the secondary windings made three-phase with output voltage tripled frequency and connected in a triangle pattern or a .. star, different, ag.1 The phases are located on the cores shifted in space relative to each other by an angle equal to 12P, 2, Frequency multiplier. In addition, with the addition of the. a group of capacitors connected in delta is introduced, the tops of which are connected to the output of the three-phase secondary winding, Have H  l And  " / if №Vl // y .y