SU1356194A1 - Controlled adder of electric oscillations power - Google Patents

Abstract

The invention relates to radio engineering. The purpose of the invention is to increase efficiency by reducing switching losses. The device contains N electrical oscillators, 1 electrical oscillations, K power supply units .2, N transformers 7 / .7 7 / 12.1 3, payload 4, N ballast resistors 5, controlled autotransformer 6, K keys 7, 8 groups of locking keys, K disconnecting keys 9, decoder 10, K amplifying blocks (UB) 1 1, connecting several generators .1 and transformers 3. Fourth to Nth oscillator and their corresponding transformers are grouped into (K-2) UB 11. And the number of UB II, as well as the number of generators 1 and transformers 3 in each UB depends on the total number of N generators 1. The transformation ratio of the autotransformer 6 is on tap. 14N is equal, which ensures the coordination of the payload 4 with the N outputs of the generators 1. 1 Il. 1 tab. i; i S.r with 9 l 71 Ex. txodbi

Description

 . one

The invention relates to radio engineering and can be used in radio transmitting devices with the addition of the power of electrical oscillations and discrete control of the output power.

The purpose of the invention is to increase efficiency by reducing switching losses.

The drawing shows a circuit diagram of a controlled power adder of electrical oscillations. .

The device contains N generators

1 electric oscillations, K blocks

2 power stations (where K JN), N transformers 3, payload 4, N ballast resistors 5, controlled autotransformer 6, K keys 7 of the first group of locking keys, K kochi 8 of the second group of locking keys, K disconnecting keys 9, decoder 10 ,

To amplifying blocks G1, combining several generators 1 and transformers 3 with successively increasing numbers.

The device works as follows.

In the full output power mode, all the generators 1, formulating each power P, are turned on, for which all control inputs 12., ... 2.N of the controlled power adder of the electric oscillations are supplied with the appropriate control signals (for example, direct current ). At the same time, all keys 7, all keys 8 and all keys 9 are closed. At the same time, control signals are sent to all K inputs of the decoder 10, which generates a control signal corresponding to I at its N-M output and signals corresponding to O at all other outputs. In accordance with these signals, the key 13N of the controlled autotransformer 6 is triggered, as a result of which point A is connected to the tap of the autotransformer 6, whose transformation ratio on the 14 N tap is l / (/ N, which ensures the matching of the payload 4 with the N generator outputs 1. When all N generators 1 are turned on, their in-phase and early-amplitude oscillations through the first windings of transformers 3 and keys 8 arrive at a common point A, from where the total oscillation

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The power of the 13 N key of the autotransformer 6 is fed to the tap 14 N of the autotransformer 6 and to the payload 4-, the resistance of which is equal to the output impedance of the generator I. At the same time, the full output power is equal to the sum of the powers of all the generators 1, i.e . Np.

If it is necessary to reduce the total output power, for example, by an amount of 2P equal to the sum of the powers of the generators 1.2 and 1.3, the control input 12.2 sends a zero signal, while the key 7.2 turns off the generators 1.2 and 1.3 of the block 11.2 from the power supply 2.2, key 8 disconnects the output of the amplifier unit 11.2 from point A, the key 9.2 short-circuits the transformers 3.2 and 3.3; in this case, the decoder 10 generates a code for controlling the autotransformer 6, in which the transformation ratio 1 / 4N-2 is set.

Thus, the operation of the controlled electric oscillation power adder for the number of generators 1 equal to N - 2 is ensured.

The number of amplifier units 11, as well as the number of generators 1 and transformers 3 in each amplifier unit depends on the total number N of generators 1. One of the options for the distribution of generators 1 between the individual amplifier units 11 in a controlled adder, providing discrete output power control with step P, with the minimum number of amplifier blocks 11 and the minimum number of keys 7, 8, 9 for case N from 3 to 10 are given in the table.

For example, for it is required to set the output power in the load equal to 3R. In this case, it is necessary to turn on the first and second amplifying units 11, i.e. generator 1.1 and block 11.2. For this, the first and second control inputs of the controlled adder are given signals to turn on the first generator 1.1, the amplifier unit 11.2, and to the remaining control inputs 12 - signals to turn off the generators.

In accordance with these control signals, keys 7.1 and 7.2, 8.1 and 8.2, and keys 9 except 9.1 and 9.2 are closed. In this case, the common mode and equals

Loud oscillations of generators 1.1, 1.2, 1.3 through the primary windings of transformers 3.1, 3.2, 3.3, closed keys 8.1 and 8.2 arrive at common point A and then through the corresponding key 13.3 to tap 14.3 of the auto- mateormator beat payload 4. With this transformation ratio the equalization of 14.3 to equal ensures the coordination of payload 4 with the codes of three generators, as a result of which the load-carrying power is allocated in the load.

Claims (1)

Invention Formula A controllable adder of the power of electrical oscillations, containing N transformers, N generators of electrical oscillations, the output of each of which is connected to the beginning of the first winding of the corresponding transformer, N ballast resistors, informer, 1 load, K disconnecting keys (where K N), the first and second groups of K shorting keys, K power supply units, a controlled autotransformer, to the input of which the outputs are connected To the closing keys of the second group, the output is connected to the payload, and the control inputs of the control The autotransformer is connected to the outputs of the decoder, the output of the first and second power supply units through the first and second keys of the first group of locking keys, respectively, connected to the power inputs of the first and second electrical oscillators, the i-ro control inputs of the first and second locking keys and the second group of keys are interconnected, connected to the i-th input of the decoder and form the i-th control input of the controllable adder of the power of electrical oscillations (where i 1,2, ..., K), characterized in that. four in order to increase efficiency by reducing switching losses, the end of the first winding of the first transformer is connected to the input of the first key of the second group of closing keys, the ends of the first windings of the second and third transformers are connected to the input of the second key of the second group of closing keys, the end and beginning of the second winding of the first transformer are connected I will blow myself through the first disconnecting key, the end of the second winding of the transformer and the beginning of the second winding of the third transformer are interconnected through the second disconnecting switch uch, between the beginning and the end of the second winding of each transformer the corresponding ballast resistor is turned on, the beginning of the second winding of the nth transformer (where, 2, ..., N) is connected to the end of the second winding (n + 1) of the first transformer (dl,) , the power input of the third electrical oscillation generator is connected to the power input of the second electrical oscillation generator, and the fourth to Nth electrical oscillator and the corresponding transformers are grouped into (K-2) amplifying blocks containing electric oscillator generators In this case, in each i-th amplifier unit, the power inputs of the electrical oscillators are interconnected and connected to the output of the corresponding 1st power supply through the corresponding i-key of the first group of locking keys, the ends of the first windings of transformers, the input W 1x in the i-th amplifying unit, connected to the input of the i-ro key of the second group of closing keys, the end of the second winding of the youngest by transformer number is connected to the end of the second winding of the senior by the number of transformer through the i-th release key.