CN209948968U

CN209948968U - Innovative AC-AC chopper boosting voltage regulator

Info

Publication number: CN209948968U
Application number: CN201822279897.2U
Authority: CN
Inventors: 龚秋声
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2020-01-14
Anticipated expiration: 2028-12-30

Abstract

The invented AC-AC chopper booster voltage regulator is composed of load RL, capacitor C, inductors L1 and L2, two-way switches S1 and S2 and its control circuit, and has 3 terminals: alternating current input end 2, alternating current output end 3 and alternating current input output common terminal 1, S1 comprises 2 diodes and 2 triodes, its characterized in that: l1 and L2 inductance have coupling, S2 is made up of 2 thyristors V3 and V4, there are direct current signals in all thyristor trigger poles in the positive and negative half cycle of the input power respectively, can regulate and output the alternating voltage of boost as long as regulate the on-off ratio of 1 two-way switch S1, the two-way switch S1 transmits the electric energy to the load RL of output during on-off period, have advantage that the output current ripple is small.

Description

Innovative AC-AC chopper boosting voltage regulator

Technical Field

The utility model relates to an AC chopper boost voltage regulator

Background

The direct current chopper voltage regulator mainly has 6 circuits on the textbook: the two most important circuits are a Buck voltage reduction direct current chopping voltage regulation circuit, a Boost voltage reduction chopping voltage regulation circuit and 4 boosting chopping voltage regulation circuits capable of boosting and reducing voltage, which are named or invented by foreigners. For example: the improved Buck/Boost single-tube non-isolated direct-current converter provided by Slobodan Cuk of the California institute of technology, USA has inductors in input and output sections, can obviously reduce the pulsation of input and output currents, is named as a Cuk lifting direct-current chopping voltage regulating circuit and is compiled behind a Buck-Boos circuit of a world textbook. The direct current chopper for improving Boost of Buck invented by the same person has the advantages that coupling inductors are uniformly arranged on an output section, bear quantity is transmitted to an output end during the on period and the off period of a switch, the output current pulsation can be reduced by means of summer heat, and the direct current chopper can be also arranged behind a textbook Boost and becomes an important circuit in a Boost direct current chopper circuit.

The alternating current power supply can be regarded as a positive direct current power supply and a negative direct current power supply, so that the circuits of the direct current chopping voltage regulators can be used for topology of the corresponding alternating current chopping voltage regulators.

Disclosure of Invention

The first purpose of the utility model is to provide an it has coupling inductance L1, L2 to provide an innovative AC-AC chopper converter to Boost AC-AC step-up chopper voltage regulator, has in the input/output section, can show the pulsation that reduces output current. The second purpose is to provide the circuit of the AC chopping boost voltage regulator invented by Chinese for the AC chopper in the textbook of power electronic technology.

In order to realize the first purpose, the utility model provides an innovative ac chopper boost voltage regulator, it comprises load RL, electric capacity C, inductance L1 and L2, two-way switch S1, S2 and control circuit thereof, has 3 ends: alternating current input end 2, alternating current output end 3 and alternating current input output common terminal 1, S1 comprises 2 diodes and 2 triodes, its characterized in that: l1 and L2 inductance have coupling, S2 comprises 2 thyristors V3 and V4, 2 thyristors have direct current signal respectively in positive and negative half cycle of input power supply, output boost alternating current can be adjusted only by adjusting the on-off ratio of a bidirectional switch S1, alternating current input end 2 is connected with one end of inductance L1, the other end 4 of inductance L1 is connected with one end of bidirectional switch S1 and one end of bidirectional switch S2, the other end 5 of bidirectional switch S2 is connected with one end of capacitor C and one end of inductance L2, alternating current output end 3 is connected with the other end of inductance L2 and one end of load RL, alternating current input and output common end 1 is connected with the other end of load RL, the other end of capacitor C and the other end of bidirectional switch S1.

Drawings

Fig. 1 is a conventional ac chopper boost voltage regulator. Figure 2 is an innovative ac chopper boost voltage regulator. Wherein: s1 and S2 bidirectional switches. V1-V4 are triodes or thyristors. D1-D4 are diodes. And C is capacitance. L1 and L2 are inductors.

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 triodes V3 and V4 and 2 diodes D3 and D4. The control modes of S1 and S2 are complementary control, and the size of the lifting alternating current voltage at two ends of alternating current output can be adjusted only by adjusting the on-off ratio of 2 two-way switches S1 and S2.

Fig. 2 is an innovative circuit of the present invention shown in fig. 1. The DC boost chopper voltage regulator is composed of a positive and a negative boost current chopper voltage regulator innovative circuits shown in figure 1, and the working principle of the DC boost chopper voltage regulator is similar to that of a DC boost chopper voltage regulator.

1) In the positive half cycle of the power supply: the 1 DC boost chopper voltage regulation circuit is composed of inductors L1 and L2, a triode V1, a diode D2, a thyristor V3, a capacitor C and a load RL. When the triode V1 is turned on, the inductor L1 charges and stores energy, and the induced voltage on the inductor L2 is superposed with the voltage on the capacitor C to supply power to the load RL. When the triode V1 is turned off, the stored energy on the L1 supplies power to the load RL through the thyristor V3 and the inductor L2. 2) At the negative half cycle of the power supply: the other 1 DC boost chopper voltage regulating circuit is composed of inductors L1 and L2, a triode V2, a diode D1, a thyristor V4, a capacitor C and a load RL. When the triode V2 is turned on, the inductor L1 charges and stores energy, and the induced voltage on the inductor L2 is superposed with the input voltage on the capacitor C to supply power to the load RL. When the triode V is turned off, the stored energy on the L2 passes through the thyristor V4 and the inductor L2 again to supply power to the load RL. The 2 direct current innovative circuits form an alternating current-alternating current boosting chopping voltage regulating innovative circuit,

the innovation points are as follows: 1) an inductor L2 is added to the output terminal coupled to the input terminal inductor L1 to enable the bi-directional switch S1 to deliver power to the output terminal load RL during both on and off periods. 2) The bidirectional switch S2 is improved to be replaced by 2 thyristors V3 and V4, the reliability of the thyristors is far higher than that of the transistors, and the cost of the thyristor module is only one third of that of the transistor module, so that the improvement not only greatly improves the reliability of the lifting alternating current chopper circuit, but also greatly reduces the manufacturing cost of the circuit for products. 3) The bidirectional switch is changed into non-interactive-on-chip control, and voltage regulation can be realized only by regulating the on-off ratio of the bidirectional switch S1.

Claims

1. The invented AC-AC chopper booster voltage regulator is composed of load RL, capacitor C, inductors L1 and L2, two-way switches S1 and S2 and its control circuit, and has 3 terminals: alternating current input end 2, alternating current output end 3 and alternating current input output common terminal 1, S1 comprises 2 diodes and 2 triodes, its characterized in that: l1 and L2 inductance have coupling, S2 comprises 2 thyristors V3 and V4, there are direct current signals respectively at 2 thyristor trigger poles in the positive half cycle and negative half cycle of input power supply, just adjust the on-off ratio of 1 bilateral switch S1 and can adjust the output alternating current that steps up, alternating current input end 2 is connected with inductance L1 one end, inductance L1 other end 4 is connected with one end of bilateral switch S1, one end of bilateral switch S2, the other end 5 of bilateral switch S2 is connected with one end of capacitor C, one end of inductance L2, alternating current output end 3 is connected with the other end of inductance L2, one end of load RL, alternating current input output common end 1 is connected with the other end of load RL, the other end of capacitor C, the other end of bilateral switch S1.

2. The innovative ac chopper boost regulator of claim 1, characterized by: there is a coupling between the input inductor L1 and the output inductor L2.