CN209913712U

CN209913712U - Transformerless boosting ac chopper voltage stabilizer

Info

Publication number: CN209913712U
Application number: CN201822279858.2U
Authority: CN
Inventors: 龚秋声
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2020-01-07
Anticipated expiration: 2028-12-30

Abstract

A step-up AC chopper stabilizer without transformer is composed of inductor L, capacitor C, bidirectional switches S1, S2 and its control circuit, which has 2 AC input terminals (2, 1) and 2 AC output terminals (3, 1), and bidirectional switch S1 is composed of 2 diodes and 2 triodes, or 4 diodes and 1 triode. S2 is composed of 2 thyristors V3 and V4, and DC trigger voltages are applied to the trigger electrodes of the two thyristors respectively during the positive and negative half cycles of the input voltage. The 220V regulated AC output voltage can be realized by only regulating the on-duty ratio of the bidirectional switch S1. It has the advantages of continuity, stepless, no transformer, no contact, small volume and light weight.

Description

Transformerless boosting ac chopper voltage stabilizer

Technical Field

The utility model relates to a boost AC chopper converter

Background

The main circuit of the existing Boost AC chopper voltage stabilizer is a Boost type AC Boost chopper voltage regulator circuit which adopts complementary control of 1 inductor, 1 capacitor and 2 fully-controlled bidirectional switches, and the voltage regulation can be realized only by adjusting the on-off ratio of the 2 fully-controlled switches at the same time.

Disclosure of Invention

The design aim is to provide a transformerless boosting alternating-current chopper voltage stabilizer.

In order to achieve the above purpose, the present design provides a transformerless boost ac chopper regulator, which comprises 1 inductor L, 1 capacitor C, 2 bidirectional switches S1, S2 and a control circuit thereof, wherein the boost ac chopper regulator comprises 2 ac input ends (2, 1) and 2 ac output ends (3, 5), and the bidirectional switch S1 comprises 2 diodes and 2 triodes, or comprises 4 diodes and 1 triode, and is characterized in that; the bidirectional switch S2 is composed of 2 thyristors V3 and V4, direct current voltage is added to two thyristor trigger electrodes in positive and negative half periods of input voltage respectively, boosting alternating current voltage stabilization can be realized only by adjusting the on-off ratio of the bidirectional switch S1, a first alternating current input end (2) is connected with one end of an inductor L, the other end (4) of the inductor L is connected with one end of a bidirectional switch S1 and one end of a bidirectional switch S2, a first alternating current output end (3) is connected with one end of a capacitor C, the other end of the bidirectional switch S2 is connected, and a second alternating current input end (1) is connected with a 2 nd alternating current output end, the other end of the capacitor C and the other end of the bidirectional. The transistor in the S1 can be replaced by other full control devices.

Drawings

Fig. 1 is a transformerless boost alternating-current chopper voltage regulator of the present design. FIG. 2 is another transformerless boost AC chopper regulator of the present design.

Wherein: s1 is a bidirectional switch consisting of a transistor and a diode. S2 is a bidirectional switch consisting of 2 thyristors. V1 and V2 are triodes. D1-D4 are diodes. V3, V4 thyristor. And C is capacitance. L is inductance.

Detailed Description

As can be seen from FIG. 1: the S1 is composed of 2 triodes V1 and V2 and 2 diodes D1 and D2. The S2 is composed of 2 thyristors V3 and V4. The thyristors V3, V4 have DC signals applied to their control electrodes during positive and negative half cycles, and they are equivalent to diodes. The working principle of the circuit is as follows;

1) the power supply positive half cycle Boost direct current chopping voltage regulating circuit 2) consists of an inductor L, a capacitor C, a triode V1, a diode D2 and a thyristor V3 and the power supply negative half cycle Boost direct current chopping voltage regulating circuit consists of the inductor L, the capacitor C, the triode V2, a diode D1 and a thyristor V4.

The trigger signal is controlled to be a fixed direct current signal by 2 thyristors V3 and V4 in S2. Therefore, the alternating current voltage at two ends (3 and 5) of the alternating current output can be 220V by only adjusting the on-off ratio of the control signals of the 2 triodes V1 and V2 in the S1.

As can be seen from fig. 2: the S1 is composed of 1 triode V1 and 4 diodes D1-D4, which replace the bidirectional switch in fig. 1. The S2 is composed of 2 thyristors V3 and V4. The working principle of the circuit is as follows;

1) the positive half-cycle Boost direct-current chopping voltage regulating circuit of the power supply consists of an inductor L, a capacitor C, a triode V1, diodes D1-D4 and a thyristor V3. 2) The power supply negative half-cycle Boost direct-current chopping voltage regulating circuit consists of an inductor L, a capacitor C, a triode V1, diodes D1-D4 and a thyristor V4. The trigger signal is controlled to be a fixed direct current signal by 2 thyristors V3 and V4 in S2. Therefore, the alternating voltage at two ends (3 and 5) of the alternating current output is stabilized at 220V only by adjusting the on-off ratio of the control signal of the triode V1 in the S1 to be between 0 and 1.

From the above, it can be seen that: the transformer-free boosting alternating-wave chopper voltage stabilizer has the advantages of continuous reading, stepless, non-contact, transformer-free, small volume and light weight.

Claims

1. Transformerless boost AC chopper voltage stabilizer, it comprises 1 inductance L, 1 electric capacity C, 2 bilateral switch S1, S2 and its control circuit, has 2 AC input end (2, 1), 2 AC output end (3, 5), bilateral switch S1 comprises 2 diodes and 2 triodes, or 4 diodes and 1 triode, its characterized in that: the bidirectional switch S2 is composed of 2 thyristors V3 and V4, direct current voltage is added to two thyristor trigger electrodes in positive and negative half periods of input voltage respectively, boosting alternating current voltage stabilization can be realized only by adjusting the on-off ratio of the bidirectional switch S1, a first alternating current input end (2) is connected with one end of an inductor L, the other end (4) of the inductor L is connected with one end of a bidirectional switch S1 and one end of a bidirectional switch S2, a first alternating current output end (3) is connected with one end of a load, one end of a capacitor C and the other end of a bidirectional switch S2, and a second alternating current input end (1) is connected with a 2 nd alternating current output end, the other end of the load, the other end of the capacitor C and the.

2. The transformerless boost ac chopper regulator of claim 1, wherein: the bidirectional switch S1 is composed of a diode and a fully controlled device.