SU1339815A1 - A.c.to a.c. voltage converter - Google Patents

Abstract

The invention relates to electrical engineering and can be used as a source of three-phase voltage when supplying loads with a small current. The purpose of the invention is to obtain a three-phase output voltage symmetrical in amplitude and phase and equal in each phase to the input voltage. The device contains five RC-chains made up of capacitors 2, 5, 7, 10, 12 and resistors 1, 4, 8, 9, 11, respectively. The connection point of the resistor 1 with the capacitor 2 and the connection point of the capacitor 5 with the resistor 4 form the input terminals 3, 6, the connection point of the capacitor 7 with the resistor 9, the connection point of the capacitor 10 with the resistor 8 and the connection point of the capacitor 12 with the resistor 11 form the output switches 13, 14, 15, the Resistor 9 is connected to a free output with a free output of the capacitor 10 and with the input terminal 6. The free terminals of the capacitor 2, resistor 1, capacitor 7 and resistor 11 are combined. Similarly, the free terminals of resistor 1, capacitor 5, resistor 8 and capacitor 12 are combined. The above connection of the device elements provides a symmetrical output voltage, and by selecting the ratio of resistors and capacitors, the ratio of output voltage to input voltage can be set between 1 and 1.37 Thus, the specified voltage ratio at the output of the converter can be set to the input, 1 hp, f-ly, 1 slug. And OE from 00

Description

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The invention is from the state of the plectro technology and can be used on electrical and radio equipment. r, ne according to the conditions of work, it is necessary to use: exactly 1K three-phase alternating voltage, designed for operation at i- a .. H; iX load current, or in repeated -:;) operation mode “

The purpose of the invention is to obtain a phase: phase output voltage of 1 and 5 symmetrical in amplitude and (|) g and equal to B of each phase input;

Fig. 1 shows a circuit for converting single-phase to three-phase voltages; FIG. 2 shows the stress diagrams for his work,

The converter contains the first KS circuit from resistors I and K1: 1 of the capacitor 2j, the midpoint of which is connected to the first input terminal 3 of the converter, the second RC circuit from: Ezistor 4 and the capacitor 5, the average pin of which is connected to the second input; With the help of terminal 6 of the converter, the free capacitor 7 of the third RC circuit is connected to the free terminals of the first RC circuit and the fourth resistor 4 of the second CS circuit, the free resistor 8 of the fourth RC circuit to the free terminals of the resistor 1 the first KS circuit and the capacitor 5 of the second KO circuit, and The second point of the RC circuit from the capacitor, 5 and the resistor 4 - with the free leads of the resistor 9 of the third CS circuit and the capacitor 10 of the fourth RC circuit “Free terminals of the resistor 11 and the capacitor) and the 12th fifth CS circuit are connected, respectively. with a common connection point; sensors 2 and 7 and with a connection point of resistors 1 and 8; First output terminal 13 of the connector; with the connection point of the capacitor 7 and the resistor 9, the second output terminal 14 with the common connection point of the resistor 11 and the capacitor 12, and the third: output terminal 15 with the common connection point of the resistor-8 and the capacitor 10.,

Transform Spruce works as follows.

The resistance of resistor 4 and capacitor 5 is 1.73 times greater than the resistance, respectively, 5 of resistor 1 and capacitor 2, therefore the voltage drop U, and U (Fig 2) is less in absolute value than

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Claims (1)

Formula invented 1, Transformer, alternator voltage alternator in —higher-state, ”; five KC-circuits, consisting of ash and a proud of a series of resistors and a capacitor, the midpoints of the first and second RC circuits are connected, respectively, to the first and second input terminals the capacitor terminal of the third RC circuit is connected to the free terminals of the capacitor of the first RC circuit and the resistor of the second RC circuit, the free terminal of the fourth RC circuit resistor is connected to the free wires of the resistor of the first RC circuit and the capacitor of the second RC circuit, and the middle point of the second RC -tse and connected to the free terminals of the third RC circuit resistor and the fourth RC circuit capacitor, distinguished by the fact that, in order to obtain a three-phase output voltage, symmetrical in amplitude and phase and equal in each phase to the input voltage, the free terminals resistor and capacitor ten 20 1t4 The yens correspond to 110 with the common connection point of the capacitors of the first and third RC-nenei j and the common connection point of the resistors of the first and fourth RC circuits, the first output terminal is connected to the midpoint of the third RC circuit, the second output is connected to the fifth RC- circuit, and a third output terminal - with the midpoint of the fourth serial RC-circuit. 2, the converter according to claim 1, which is the ratio of the resistance of the second RC circuit to the resistance of the capacitor. The first RC circuit and the capacitor resistance of the second RC circuit to the resistance of the first RC circuit are chosen equal to 1.73, and the ratios of the resistances of the capacitor and the resistor in the third, fourth and fifth RC circuits are the same. m Editor Danko Compiled by L Ustinkina Tehred M. Didyk Proofreader S. Shekmar Order 4241/52 Circulation 659Subscription BHWinii USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Proektna st, 4