SU1488943A1 - Magneto-thyristor frequency multiplier with even multiplication factor and direct coupling - Google Patents

Description

The invention relates to electrical engineering and can be used as a static source of electrical energy. The purpose of the invention is to improve the weight and dimensions, simplify the design and increase the reliability of the multiplier. The multiplier contains a converter for the number of phases, the number of secondary windings 1-5 of which is one more than half the frequency converter frequency. Secondary windings 1-5

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13

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sixteen

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17

18

nineteen

21

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figure 1

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connected in a star, to the ends of which are connected common points of connection of opposite electrodes of thyristors 6-15. The common point of connection of opposite electrodes of thyristors .16 and 17 of an additional pair is connected to the zero output of the star windings 1-5. The primary winding 20 of the output transformer is connected between the common points of connection of the like electrodes of thyristors 6-15 and 4

The thyristors 18 and 19 are connected to opposite terminals of the primary circuit; coils 21 of the output transformer and with free terminals of thyristor electrodes 16 and 17. The number of turns of the winding 21 is Ίβ ¹ times the number of turns of the winding 20. The proposed multiplier reduces the total number of turns of the used transformer windings and the number of thyristors.

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The invention relates to electrical engineering and can be used as a static source of electrical energy.

The purpose of the invention is to improve the weight and dimensions, simplify the design and increase reliability.

Figure 1 presents the scheme of the magneto-thyristor multiplier hour-20

25

tota even number of times with a direct link; in Fig.2, the location on the magditopipe of the secondary windings of the converter of the number of phases with 30 number of input phases is three; FIG. 3 is a sequence diagram of the operation of the thyristors (the indicated numbers correspond to the numbers of the thyristors); 4 and 5 are vector diagrams of the formation of the output phases of the phase number converter. ·

The frequency multiplier (figure 1) contains the secondary windings 1-5 of the transformer converter of the number of phases, dd connected to a star, to the ends of which are connected in pairs thyristors 6-15 connected by opposite electrodes. The common point of connection of opposite electrodes of the additional pa-ddry thyristors 16 and 17 is connected by the zero point of the star windings 1-5. The free terminals of thyristor electrodes 16 and 17 through additional thyristors 18 and 19, respectively, are connected to common connection points of free terminals of like electrodes of thyristors 6-15, to which the primary winding 20 of the output transformer is also connected. The primary winding of the output transformer 21 podklyu-. to the specified free terminals of thyristor electrodes 16 and 17. The secondary winding 22 of the output transformer ^!

Matora connected to the output pins to connect the load 23.

FIG. 2 the number of turns of the secondary windings 1,2, 4 constitute a certain part of the number of turns ν of the windings 3 and 5.

The frequency multiplier works as follows.

In the case of multiplying the frequency by eight times, the thyristors work in the order shown in FIG.

With the passage of current through the phase of the windings 1 at the moment of time, the thyristors 1, 18 simultaneously turn on

17 and a positive half-wave voltage of 400 Hz frequency is formed on the load. After turning on the thyristors 1, 18, 17 in the Time of the Sd, the thyristors 6 and 9 simultaneously turn on, linear current flows through the windings 1 and 2, a negative half-wave voltage is formed on the load. The formation of the remaining half-wave voltage of the output frequency of 400 Hz occurs at time instants Сф, Β5-, с ₆ , с ₇ , С ₈ , at which simultaneous switching on of the corresponding groups of thyristors 16, 19, 9 takes place; 12, 9; 12, 18, 17;

12, 15, 10, 18, 17; 6, 11. The thyristor groups 16, 19, 7 simultaneously turn on in the negative power supply half-period in the same order; 8, 7;

8., 18 _# 17, 8.13, 16, 19, 13; 14, 13; 16, 19, 15. As a result, the output voltage is formed from sixteen phases, the shift between which is equal to P / 8, and the amplitude of even phases is greater than the amplitude of odd phases. Therefore, the number of turns in a winding 21 is 0.76 times the number of turns in a winding 20. ______

1488943

Notation 1, -1, 12, 21, -2,2,

42, 24, 4, -4, 43, 54, 3, -5, 31,

13 (FIGS. 3-5) correspond to the designation of the windings of the converter of the number of phases, indicating the direction of the current in them.

Figure 5 shows a vector diagram of the formation of twenty phases of six with a multiplication factor of ten frequency equal to ten.

Claims (1)

Claim A magnetically thyristor multiplier 15 frequency in an even number of times with a direct connection, containing a ferromagnetic converter of the number of phases, including in the number of phases a number of secondary windings connected in a star, 20, to the end of each of which is connected a common connection point of opposite electrodes of one of the main pairs thyristors, as well as an additional pair of thyristors, the common point of connection of opposite electrodes of which are connected to the zero point of the star of the indicated secondary windings, the electrodes of the same name the thyristors of the main pairs are combined into two common points, characterized in that, in order to improve the weight and size parameters, simplify the design and improve reliability, the output transformer with two primary and one secondary windings is additionally introduced, and the ferromagnetic converter of the number of phases is made with the number of secondary windings per unit more than half the frequency conversion frequency, with the first primary winding of the output transformer connected between the common points of connection of the main thyristor pairs and made with the number of turns in - (T times less than the number of turns of the second primary winding of the output transformer connected between the free terminals of the electrodes of an additional pair of thyristors, the opposite terminals of the primary windings of the output transformer are connected to each other through additionally inserted thyristors, and the secondary winding of the output transformer is connected to the output windings pins for connecting the load. 1488943