CN209896916U

CN209896916U - Zeta AC chopper regulated compensation type AC voltage stabilizer

Info

Publication number: CN209896916U
Application number: CN201822279881.1U
Authority: CN
Inventors: 龚秋声
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2020-01-03
Anticipated expiration: 2028-12-30

Abstract

The Zeta AC chopper regulated compensating AC voltage stabilizer consists of compensating transformer T, 2 inductors L1 and L2, 4 capacitors C1-C4, 2 bidirectional switches S1 and S2 and its control circuit, and has 2 ends: the AC input end A1, the AC output end A2 and the AC input and output common end N. The S1 is composed of 2 triodes and 2 diodes, the S2 is composed of 2 thyristors V3 and V4, the trigger poles of the 2 thyristors are respectively provided with direct current voltage in the positive half cycle and the negative half cycle of the power supply, and the stability of the output voltage can be realized by only controlling the on-off ratio of the 1 bidirectional switch S1 by the alternating current output voltage in a feedback way. The three-phase alternating current voltage stabilizer consists of 3 single-phase star-shaped connections. The Zeta AC chopper regulated compensation type AC voltage stabilizer has no voltage-regulating inverter transformer, only 1 full-control two-way switch S1 and 1 compensation transformer, and has the advantages of continuity, stepless, non-contact, good reliability and low cost.

Description

Zeta AC chopper regulated compensation type AC voltage stabilizer

[ a ] the technical field

The utility model relates to an ac chopper voltage regulator and compensation formula alternating current voltage stabilizer.

[ II ] background Art

The existing chopping control voltage regulation compensation type alternating current voltage stabilizer is provided with a plurality of bidirectional voltage regulation and phase inversion switches, a voltage regulation transformer and a compensation transformer, and the compensation type alternating current voltage stabilizer without a voltage regulation handsome transformer at least needs 2 bidirectional fully-controlled chopping switches to realize the alternating current voltage regulation of positive and negative bidirectional compensation voltage regulation.

[ third ] summary of the invention

The utility model aims at providing a compensation formula alternating current voltage stabilizer that has only 1 two-way full accuse switch, 1 two-way half accuse switch, 1 compensating transformer's Zeta is handed over and is chopped the wave and adjust.

In order to achieve the above object, the present invention provides a compensation ac voltage stabilizer for Zeta ac chopper regulation, which comprises a compensation transformer T, 2 inductors L1 and L2, 4 capacitors C1-C4, 2 bidirectional switches S1 and S2 and a control circuit thereof, and has 3 terminals: alternating current input end A1, alternating current output end A2, alternating current input output common terminal N, compensation vary voltage have primary winding W1 and secondary winding W2, S1 comprises 2 triodes and 2 diodes, its characterized in that: s2 is made up of 2 thyristors V3, V4, there are direct voltages separately in the positive and negative half cycle of the power, as long as the on-off ratio of the bidirectional switch S1 of feedback control of output voltage of alternating current has been realized the stability of the output voltage, alternating current input A1 and one end of bidirectional switch S1, one end of capacitor C3, one end of compensating transformer primary winding W1, one end of secondary winding W2 are connected, another end 4 of bidirectional switch S1 is connected with one end of inductance L1, one end of capacitor C1, another end 5 of capacitor C1 and one end of inductance L2, one end of bidirectional switch S2 are connected, another end 3 of inductance L2 and one end of C2, another end of compensating transformer primary winding W1, alternating current output A2 and one end of capacitor C4, another end of compensating transformer secondary winding W2 are connected, the common end N of output of alternating current inputs and another end of capacitor C2, another end of capacitor C3, another end of capacitor C4, another end of, The other end of the binary electronic switch S2 is connected.

The 3 compensation type AC voltage stabilizers regulated by the Zeta alternating current chopped wave are connected in a star shape to form 1 compensation type AC voltage stabilizer regulated by the three-phase Zeta alternating current chopped wave.

[ IV ] description of the drawings

Fig. 1 is a main circuit of a compensation type ac voltage stabilizer adjusted by Zeta ac chopper of the present invention. Wherein: t is the compensation transformer, W1 and W2 are the primary and secondary windings of the compensation transformer. S1 and S2 are bidirectional switches. C1-C4 are capacitors, and L1 and L2 are inductors. D1 and D2 are diodes and V1 and V2 are transistors. V3 and V4 are thyristors.

Detailed description of the preferred embodiments

As can be seen from FIG. 1: and S1 is a fully-controlled bidirectional switch composed of diodes D1 and D2 and triodes V1 and V2. The S2 is a bidirectional switch composed of thyristors V3 and V4. The adjustment of the compensation voltage consists of a positive Zeta direct current chopping circuit and a negative Zeta direct current chopping circuit:

1) the positive half-cycle Zeta lifting direct-current chopping voltage-regulating circuit of the power supply consists of inductors L1 and L2, capacitors C1 and C2, a triode V1, a diode D2 and a thyristor V3.

2) The power supply negative half-cycle Zeta lifting direct-current chopping voltage-regulating circuit consists of inductors L1 and L2, capacitors C1 and C2, a triode V2, a diode D1 and a thyristor V4. The 2 lifting direct-current chopping voltage regulation circuits form a positive and negative power supply improved Zeya alternating-current lifting chopping voltage regulation circuit, and three alternating-current compensation voltages which are higher than, equal to and lower than an input power supply can be output between the 3 end and the N end. Therefore, the primary winding W1 of the compensation transformer T is connected between the 3 terminal and the input power supply 2 terminal, so that the size and direction of the compensation voltage can be adjusted, and the output voltage of the alternating voltage is stabilized.

The 2 thyristors V3 and V4 are respectively applied with DC voltage on the trigger electrodes in the positive and negative half periods of the power supply, and do not need to be controlled when adjusting the output compensation voltage. Therefore, the compensation voltage can be adjusted by only adjusting the on-off ratio of 1 electronic switch S1. The output voltage feedback control of 2 ac regulated output terminals (a2, N) in fig. 1 controls the on-off ratio of 2 transistors V, V2 in S1 to realize ac voltage regulation.

The utility model discloses a compensation formula alternating current voltage stabilizer that single-phase Zeta is handed over and is chopped wave was adjusted does not have the voltage regulation phase inverter transformer, and the mouth only has 1 full control bilateral switch S1 and 1 compensating transformer, has in succession, stepless, contactless, good reliability, advantage with low costs.

Claims

A Zeta AC chopper regulated compensation type AC voltage stabilizer is composed of a compensation transformer T, 2 inductors L1 and L2, 4 capacitors C1-C4, 2 bidirectional switches S1 and S2 and a control circuit thereof, and has 3 ends: AC input end A1, AC output end A2, AC input output common terminal N, the compensating transformer has primary winding W1 and secondary winding W2, S1 comprises 2 triodes and 2 diodes, its characterized in that: s2 is made up of 2 thyristors V3, V4, there are direct voltages separately in the positive and negative half cycle of the power, as long as the on-off ratio of the bidirectional switch S1 of feedback control of output voltage of alternating current has been realized the stability of the output voltage, alternating current input A1 and one end of bidirectional switch S1, one end of capacitor C3, one end of compensating transformer primary winding W1, one end of secondary winding W2 are connected, another end 4 of bidirectional switch S1 is connected with one end of inductance L1, one end of capacitor C1, another end 5 of capacitor C1 and one end of inductance L2, one end of bidirectional switch S2 are connected, another end 3 of inductance L2 and one end of C2, another end of compensating transformer primary winding W1, alternating current output A2 and one end of capacitor C4, another end of compensating transformer secondary winding W2 are connected, the common end N of output of alternating current inputs and another end of capacitor C2, another end of capacitor C3, another end of capacitor C4, another end of, The other end of the binary electronic switch S2 is connected.
2. The Zeta-ac chopper regulated compensated ac voltage regulator of claim 1, wherein: the 1 three-phase Zeta-ac chopper regulated compensated ac voltage regulator is formed by star-connecting 3 Zeta-ac chopper regulated compensated ac voltage regulators as described in claim 1.