CN203840206U - Single-phase and three-phase alternating current voltage stabilizer - Google Patents

Abstract

The utility model provides a single-phase and three-phase alternating current voltage stabilizer. The alternating current voltage stabilizer is composed of a bidirectional full control electronic switch composed of a single-phase or three-phase autotransformer with a tap, an inductance-capacitance filter, a rectifier diode and a full control component, a bidirectional half control electronic switch composed of a thyristor, and a control trigger circuit. The bidirectional electronic switches are connected with the input end of the autotransformer. Two full control components in the automatic adjustment bidirectional switch are employed to chop and control a break-make ratio, and thus the output alternating current achieves stability. The current voltage stabilizer has advantages of no contact point, rapid response, small amount of electronic components, low cost, good reliability and the like. The single-phase and three-phase alternating current voltage stabilizer can replace a present single-phase and three-phase compensation-type full-automatic alternating current voltage stabilizer, a single-phase and three-phase full-automatic compensation-type electric power voltage stabilizer and an intelligent no-contact-point alternating current electric power voltage stabilizer, and has wide market development prospect.

Description

Single-phase and three-phase AC voltage stabilizer

One, technical field the invention belongs to power technique fields, relates to single-phase and three-phase ac regulated power supply.

Two, extremely wide single, the compensation full-automatic alternating current stabilized voltage supply of three-phase (SVC series) of at present application of background technology and single, that three-phase Full-automatic compensated electric power stabilized voltage power supply (BW/DBW-SG series) all exists carbon brush is fragile, the adjustment time such as grows at the shortcoming.And the Intelligent contactless alternating electromotive force stabilized voltage power supply (ZBW/ZDBW etc.) of producing at present, although contactless, reaction speed is fast, but exist transformer and need a lot of leading-out ends, use a lot of half control bidirectional electronic switch conversion regulation output voltage, and strictly speaking, its output voltage is discontinuous." a kind of single-phase and compensation control pressure regulation AC voltage regulator of cutting of three-phase " (patent No.: 201320025860.1), yet have weak point of same inventor's invention.

Three. summary of the invention the design reduces the number of turn of autotransformer winding, and 2 bidirectional electronic switch in " a kind of single-phase and compensation control pressure regulation AC voltage regulator of cutting of three-phase " of same inventor's design are moved on to autotransformer power supply input side.AC voltage regulator of the present invention has single-phase and three-phase two classes.Single phase alternating current (A.C.) pressurizer, formed by 1 autotransformer with 2 centre taps and 2 terminations, 2 inductance-capacitance filter, 1 half control bidirectional electronic switch and 1 full control bidirectional electronic switch and trigger control circuit thereof, automatically regulate the full control device in full control bidirectional electronic switch to cut control make-to-break ratio, reach and regulate bucking voltage size to reach the stable object of output AC voltage.Three-phase AC voltage stabilizer, by three facies tract tap autotransformers, the inductance-capacitance filter of Y-connection, 3 two-way full control electronic switches, 3 two-way half control electronic switches, and trigger control circuit composition, in three-phase AC voltage stabilizer, the connected mode of every phase winding and components and parts is all identical with single phase alternating current (A.C.) pressurizer, regulates 3 full control devices in two-way full control switch electronic switch to cut control break-make simultaneously and recently reaches the stable object of three-phase output voltage.

Single-phase and three-phase AC voltage stabilizer of the present invention, it is by single-phase, or 3-phase autotransformer (B), inductance-capacitance filter (L1C1, L2C2), two-way full control electronic switch (S1), two-way half control electronic switch (S2) and control triggering electric circuit composition, single-phase autotransformer winding has 2 terminations (2, 6) and 2 centre taps (4, 5), 3-phase autotransformer winding connects into star by 3 windings identical with single-phase autotransformer, two-way full control electronic switch (S1) is made up of 2 full control devices and 2 rectifying tubes, two-way half control electronic switch (S2) is made up of the thyristor of two reverse parallel connections, it is characterized in that: single-phase and three-phase AC voltage stabilizer is with two full control device (V13 that regulate in two-way full control electronic switch (S1), V4) cut recently regulation output voltage of control break-make, each has 1 ac input end (1) to be connected with 1 filter inductance (L1) mutually, the filter inductance other end (3) connects filter capacitor (C1), two-way half control electronic switch (S2), one end of two-way full control electronic switch (S2), two-way half control electronic switch (S2) other end is connected with a termination of autotransformer (B) (6), two-way full control electronic switch (S1) other end is connected with the low centre tap end of autotransformer (B) (4), the high centre tap of autotransformer (B) (5) is connected with filter inductance (L2), filter inductance (L2) other end is connected with filter capacitor (C2) one end and AC voltage regulator output (7), two filter capacitor (C1, C2) other end and AC voltage regulator input, output common port (2) connects.

Three-phase AC voltage stabilizer, it is made up of 3-phase autotransformer (B), inductance-capacitance filter (LC), 3 two-way full control electronic switches (SA1, SB1, SC1), 3 two-way half control electronic switches (SA2, SB2, SC2) and control circuit, each phase winding of 3-phase autotransformer has 2 terminations and 2 centre taps, it is characterized in that: the connected mode of each phase of three-phase AC voltage stabilizer is all identical with single phase alternating current (A.C.) pressurizer.Three-phase AC voltage stabilizer is three-phase and four-line input and three-phase and four-line output, there are 1 input, output public zero curve (N), the non-voltage stabilizing input of three-phase (A1, B1, C1, N) and three-phase output end of pressure-stabilizing (A2, B2, C2, N).

Four, appended drawings 1 is the design's single phase alternating current (A.C.) pressurizer main circuit schematic diagram, astable alternating voltage, and by the input of (1) and (2) end, stabilized single phase voltage is exported by (7) and (2).Accompanying drawing 2 is three-phase AC voltage stabilizer main circuit schematic diagrams of the design, astable three-phase alternating current device, inputted by three-phase and four-line (A1, B1, C1, N), stablize three-phase voltage, exported by three-phase and four-line (A2, B2, C2, N), it can stable output three-phase 380V alternating voltage, also can export 3 220V single phase alternating current (A.C.) burning voltages that have public zero curve.

Five, specific implementation method accompanying drawing 1 illustrates single phase flow voltage regulator circuit figure, " a kind of single-phase and compensation control pressure regulation AC voltage regulator of cutting of three-phase " difference of it and same invention human hair is: 2 bidirectional electronic switch are changed into the design and be placed on the input of autotransformer by the output that is placed on autotransformer, just produce thus: 1) close 2 bidirectional electronic switch signals just can make voltage on autotransformer and output end of pressure-stabilizing voltage even be zero, autotransformer is just without no-load loss.2) ceiling voltage of autotransformer winding is the ceiling voltage of AC power, and the autotransformer of last invention the ceiling voltage of high winding far above the ceiling voltage of high AC power.Taking AC-input voltage excursion as-2596 to+2596 as example, the autotransformer winding voltage that the design uses is up to 275 volts, and the autotransformer system group voltage of last design use is up to 365 volts, exceed 90 volts than autotransformer winding of the present invention, this explanation the design has advantages of obvious saving metal material and energy, has obvious advance and creativeness.

From accompanying drawing 1: 1) in the time that input two ends (1,2) U12 is ceiling voltage, 2 full control device (V3, V4) positive-negative half-cycle are without pulse-width control signal, 2 half control devices (V1, V2) positive-negative half-cycle has DC trigger signal, input voltage is added to two terminations of autotransformer (6,2) by L1, V1 or V2 by input both end voltage, by autotransformer step-down, export required step-down voltage in tap (5) and termination (2).2) in the time that input two ends (1,2) U12 is minimum voltage, the full conducting of 2 full control devices (V3, V4), input voltage is added to input both end voltage between the low centre tap of autotransformer (4) and termination (2) by L1, D1 or D2, V3 or V4, export required step-down voltage by the boosting of autotransformer [voltage ratio tap (4) terminal voltage of autotransformer termination (6) is high, has the DC trigger signal also can conducting even if V1, V2 bear back-pressure] in tap (5) and termination (2).3) when input voltage changes between ceiling voltage and high low-voltage, regulate the make-to-break ratio of the pulse width signal of full control device (V3, V4) just can regulate autotransformer output two ends (5,2) voltage and alternating current steady voltage plug two ends (7,2) voltage U 72, as long as just can realize stablizing of alternating voltage by two make-to-break ratios of entirely controlling the pulse-width control signals of devices (V3, V4) in the two-way full control electronic device of voltage negative FEEDBACK CONTROL (S1) at output two ends.Should hold and not point out realizing in voltage stabilizing process: 2 thyristors in two-way half control electronic switch S2, V1 has DC trigger signal, Triggerless in power-half cycle in the whole positive half cycle of power supply; V2 is Triggerless in the whole positive half cycle of power supply, in power-half cycle, has DC trigger signal.2 full control devices in two-way full control electronic switch S1, V3 has pulse width modulated signals in the positive half cycle of power supply, and V4 has pulse width modulated signals in power-half cycle.Output voltage between the high centre tap of autotransformer (B) (5) and termination (2) is on autotransformer (B) reduced output voltage voltage, to be superimposed with 1 pulsewidth to cut control lifting output voltage waveforms, and this voltage obtains sine wave output voltage of voltage regulation through LC (L2, C2) filtering.Input two ends LC (L1, C1) be for prevent AC voltage regulator cut control pressure regulation produce harmonic wave enter electrical network design.

The three-phase AC voltage stabilizer circuit diagram of accompanying drawing 2, the three-phase AC voltage stabilizer circuit diagram that it is made up of by Y-connection mode the single phase alternating current (A.C.) pressurizer shown in 3 Fig. 1, it is made up of 3-phase autotransformer (B), inductance-capacitance filter, 3 two-way full control electronic switches (SA1, SB1, SC), 3 two-way half control electronic switches (SA2, SB2, SC2) and trigger control circuit.Its operation principle is identical with many single phase alternating current (A.C.)s of method of attachment pressurizer, and it can be exported three-phase 380V simultaneously and stablize alternating voltage and 3 single-phase 220V burning voltages.

The design is compared with the compensation type AC regulated power supply regulating with carbon brush, due to without carbon brush and regulate motor, therefore, good reliability, is swift in response, compared with Intelligent contactless alternating electromotive force stabilized voltage power supply, obviously can save the advantage of a lot of two-way exchange electronic switches and autotransformer tap And and output AC voltage continuous stepless, compare with " one is single-phase controls pressure regulation AC voltage regulator with compensation the cutting of three-phase " of same inventor's invention, there is saving metal material and energy advantage.Therefore, the update new product of existing alternating current steady voltage plug, it has larger economic benefit and social benefit.

Claims (2)

1. a single-phase and three-phase AC voltage stabilizer, it is by single-phase, or 3-phase autotransformer (B), inductance-capacitance filter (L1C1, L2C2), two-way full control electronic switch (S1), two-way half control electronic switch (S2) and control triggering electric circuit composition, single-phase autotransformer winding has 2 terminations (2, 6) and 2 centre taps (4, 5), 3-phase autotransformer winding connects into star by 3 windings identical with single-phase autotransformer, two-way full control electronic switch (S1) is made up of 2 full control devices and 2 rectifying tubes, two-way half control electronic switch (S2) is made up of the thyristor of two reverse parallel connections, it is characterized in that: single-phase and three-phase AC voltage stabilizer is with two full control device (V13 that regulate in two-way full control electronic switch (S1), recently regulation output voltage of break-make is controlled in cutting V4), each has 1 ac input end (1) to be connected with 1 filter inductance (L1) mutually, the filter inductance other end (3) connects filter capacitor (C1), two-way half control electronic switch (S2), two-way full control electronic switch (S2) one end, two-way half control electronic switch (S2) other end is connected with a termination of autotransformer (B) (6), two-way full control electronic switch (S1) other end is connected with the low centre tap end of autotransformer (B) (4), the high centre tap of autotransformer (B) (5) is connected with filter inductance (L2), filter inductance (L2) other end is connected with filter capacitor (C2) one end and alternating current steady voltage plug output (7), two filter capacitor (C1, C2) other end and alternating current steady voltage plug input, output common port (2) connects.

2. single-phase and three-phase AC voltage stabilizer according to claim 1, is characterized in that: three-phase AC voltage stabilizer is made up of 3 identical single phase alternating current (A.C.) pressurizers that are connected in the form of star-connection.