SU1324086A1 - Three=phase alternating voltage regulator - Google Patents

Abstract

The invention relates to the field of electrical engineering and can be used to power electronic equipment of wide application. The purpose of the invention is to expand the functionality. The stabilization of the three-phase voltage is dried, due to a change in the state of the actuator 1 based on the transformer with bias windings for each phase. To regulate the currents in the windings of the magnetisation, signals from the outputs of the output voltage sensors 6, 7, 8 are used, the inputs of which are connected between the corresponding 1 phase outputs and the zero point formed by common points included in the 16-21 adjacent phases of the balancing transformer 9. Due to the design of the balancing transformer 9, simultaneous accurate stabilization of the linear and phase output voltages is ensured, i.e., the goal is achieved. 1 il. and oo ND NU O 00 O5

Description

The invention is fire electrical and 1 () F (t isoizoil) for powering the stab. 1 life) is not a belt, for example, - by the times. 1st legs) eG) 1ggeli, for example pa; iee.electronic equipment of wide use.

The purpose of the invention is the extension of functionality by simultaneously stabilizing the linear and phase output voltages.

The drawing shows an example of the implementation of the proposed circuit design.

The device contains, as an actuating element 1, two series-connected transformers 2, 3 having bias windings 4 and 5 distributed over two for each phase. In this case, the transformer 2 ---- step-up, and the transformer 3 - lower, iy. In addition, these transformers are each provided with one additional oscillating winding per phase, with each of the bias windings of one phase being connected in series with only one winding of one of the neighboring phases.

DiI I of regulation of currents in the windings of the control of the actuating element 1 is 11o.; 1, sensors 6, 7 and 8 of the output voltage. The outputs of the sensors are included in the interest, which is pairwise connected in pairs of a coil of the magnetic field of the actuating element 1.

A symmetrical transformer 9 is connected to the output terminals of the phases, having a nerve winding 10 - I. , 14-15, connected in a triangle, to the middle points of which are connected the secondary windings 16-21 of adjacent phases connected in a zgr-3ai, and the number of turns of the secondary windings is -g- the number of turns of the primary windings. The zero output is connected to the common point of the windings connected according to the zigzag scheme.

Measure. The output and output sensors are connected to the corresponding output terminals of the phases and to the zero output of the balancing trans (| zormat) a 9.

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The device works as follows.

With a deviation from the set value of the voltage at the output of the unbalanced transeformer 9, the sensors of the output devices provide the redistribution of bias currents in the down and up transformers. When the output voltage decreases, the current under magnetisation in the lower-voltage transformer and the current of the magnetisation in the newer transformer decrease, which leads to a redistribution of the voltage to the step-up transformer and allows for an increase in the overall transformation ratio. When increasing the output voltage, the effect of the circuit is the opposite. The voltage is equalized between the zero output of the transformer 9 and the phase terminals, this asymmetry of the phase voltages at the output of the actuator 1, which has the most disturbing asymmetrical effects, ensures the best possible voltage leveling at the output of the balancing transformer 9.

Claims (1)

Invention Formula A three-phase AC voltage regulator containing output voltage sensors, execute a transformer-based element with bias windings on each phase, characterized in that, in order to expand the functional and biopic possibilities by simultaneously stabilizing the linear and phase output voltages simultaneously , to the output linear outputs of the stabilizer, a symmetrical transformer is connected to the transformer with the first triangle windings connected in a triangle, to the midpoints of which are connected to the zigzag sec The windings are located on one pa of adjacent phases, with the number of turns equal to the number of turns of the primary windings, and the input values of the sensor sensors are each connected to the output pin of the corresponding phase and common point of the secondary windings of the balancing transformer.