CN204205963U

CN204205963U - Single-phase and three-phase alternating current chopper circuit regulates the AC voltage regulator of bucking voltage

Info

Publication number: CN204205963U
Application number: CN201420454681.4U
Authority: CN
Inventors: 龚秋声
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-10
Filing date: 2014-08-10
Publication date: 2015-03-11
Anticipated expiration: 2024-08-10

Abstract

Single-phase and three-phase alternating current chopper circuit regulates the AC voltage regulator of bucking voltage, and it is by filter inductance, filter capacitor, compensator transformer, master control electronic switch, and afterflow electronic switch, paraphase electronic switch and control circuit thereof form.It has single-phase and three-phase two class, and three-phase is made up of 3 single-phase Y-connections.It is characterized in that the alternating-current chopper circuit that chopper regulation circuit is invented with same inventor, compensator transformer and the paraphase of paraphase electronic switch, chopper circuit module cost reduces 30%, and 2 paraphase electronic switches and compensator transformer 2 armature windings realize exporting the paraphase of secondary compensation voltage.It is compared with intelligent contactless compensation type ac voltage stabilizer: without voltage regulating transformer, have the advantage that module number is little, cost is low, precision is high, cost performance is high, continuous stepless regulates bucking voltage, realize real continuous stepless and regulate bucking voltage, it is that Intelligent contactless compensates AC voltage regulator renewal product, has very large economic benefit and social benefit.

Description

Single-phase and three-phase alternating current chopper circuit regulates the AC voltage regulator of bucking voltage

[one] technical field the design relates to cutting control AC voltage adjusting pressurizer, relates in particular to do with unidirectional thyristor the continuous stepless Contactless compensating ac voltage stabilizer that afterflow electronic switch alternating-current chopper circuit regulates bucking voltage.

[two] background technology Intelligent contactless compensation type ac voltage stabilizer has contact and the defect such as reaction speed is slow and the new product released for overcoming carbon brush voltage regulating and stabilizing device, there is a lot of unit at present in this kind of AC voltage regulator of production, this kind of AC voltage regulator, single-phase: with 1 voltage regulating transformer with 7-9 leading-out end and 7-9 block thyristor module, the thyristor zero AC voltage adjusting output voltage triggered in conversion tap supplies the primary voltage of 1 compensator transformer, compensator transformer secondary winding is connected in power electric loop the bucking voltage obtained needed for voltage stabilizing output.Three-phase: export three-phase voltage of voltage regulation with 3 single-phase Y-connections.Its circuit structure of this kind of AC voltage regulator determines that it can accomplish the pressure regulation of fast reaction and great-jump-forward, can not accomplish continuous stepless pressure regulation, reach high voltage stability precision voltage stabilizing index.How accomplishing continuous stepless voltage-regulation voltage-stabilization, and don't can exceed the cost of Intelligent contactless compensation type ac voltage stabilizer, is the hang-up that alternating current steady voltage plug circle needs to solve.

[three] object of summary of the invention the design will design a kind of continuous stepless contactless point compensating to exchange steady device, and its performance is better than Intelligent contactless compensation type ac voltage stabilizer, and its cost is lower than Intelligent contactless compensation type ac voltage stabilizer.

Cutting control AC voltage adjusting circuit on multiple units trial production textbook is had to regulate the alternating current steady voltage plug of bucking voltage at present.Because voltage regulation circuit of chopping this on textbook is: master control bidirectional electronic switch and afterflow bidirectional electronic are opened and be all the module with full control device and diode composition, because high-power IGBT Module Price is thyristor module price 2-3 times, 2 pieces of two-way modules costs of high-power chopper circuit are very high.Therefore, the cost of the method compensation type ac voltage stabilizer of this adjustment bucking voltage can fall yet.Same inventor has invented the cutting control AC voltage adjusting circuit (patent of invention: 200710137582.8) better newer than cutting control AC voltage adjusting circuit on textbook, its cost reduces 25-30%, new alternating-current chopper circuit is applied to continuous stepless Contactless compensating ac voltage stabilizer, not only its performance is higher than Intelligent contactless compensation type ac voltage stabilizer, and its cost is also lower than Intelligent contactless compensation type ac voltage stabilizer, here is exactly that the single-phase and three-phase alternating current chopper circuit applying new alternating-current chopper circuit design regulates compensation type ac voltage stabilizer.

Single-phase and the three-phase alternating current chopper circuit of the design regulates the AC voltage regulator of bucking voltage, and it is by filter capacitor C, C1, filter inductance L, 1 or 3 compensator transformer T, 1 or 3 master control electronic switch S1 or S1A, S1B, S1C, 1 or 3 afterflow electronic switch S2 or S2A, S2B, S2C, 2 or 6 paraphase electronic switch S3, S4 or S3A, S3B, S3C, S4A, S4B, S4C and control circuit composition thereof, is characterized in that: unidirectional thyristor V3, the alternating-current chopper circuit of V4 inverse parallel composition afterflow electronic switch S2 regulates bucking voltage, paraphase electronic switch S3, S4 and compensator transformer T armature winding W11, the positive negative direction of W12 control and compensation voltage, paraphase electronic switch S3, S4 holds concurrently compensator transformer T armature winding W11, W12 short switch, single phase alternating current (A.C.) stabilizator structure is the 1st ac input end (2) and compensator transformer T secondary winding W2 one end, master control electronic switch S1 one end, filter capacitor C1 one end connects, and the 1st AC voltage-stabilizing output (3) is connected with the compensator transformer T secondary winding W2 other end, the 2nd ac input end (1) and the 2nd AC voltage-stabilizing output, compensator transformer T armature winding W11 one end, armature winding W12 one end, afterflow electronic switch S2 one end, filter capacitor C one end, the filter capacitor C1 other end connects, the master control electronic switch S1 other end (4) and the afterflow electronic switch S2 other end, filter inductance L one end connects, the filter inductance L other end (5) and the filter capacitor C other end, paraphase electronic switch S3 one end, reversing phase switch S4 one end connects, the paraphase electronic switch S3 other end (6) is connected with the compensator transformer T armature winding W11 other end, the paraphase electronic switch S4 other end (7) is connected with the compensator transformer T armature winding W12 other end, and three-phase AC voltage stabilizer is made up of the Y-connection of above-mentioned 3 single phase alternating current (A.C.) pressurizers.

The single phase alternating current (A.C.) chopper circuit of the design regulates the AC voltage regulator of bucking voltage, have 1 ac input end (2), the make-to-break ratio of 2 triodes V1, V2 in 1 AC voltage-stabilizing output (3) exchanges input with 1 and AC voltage-stabilizing exports common port (1), control master control electronic switch S1, just reach the single phase alternating current (A.C.) pressurizer of output voltage stabilization.The master control electronic switch that master control electronic switch S1 is made up of 2 diodes and 2 triodes.Or the master control electronic switch be made up of 4 diodes and 1 triode.

The three-phase alternating current chopper circuit of the design regulates the AC voltage regulator of bucking voltage, star is connected into by 3 above-mentioned identical single phase alternating current (A.C.) pressurizers, 1 is had to exchange input and AC voltage-stabilizing output public zero curve N, 3 three-phase alternating current input A1, B1, C1 and 3 three-phase alternating current output end of pressure-stabilizing A2, B2, C2, can export three-phase 380V interchange burning voltage has the single-phase 220V of public zero curve N to exchange burning voltage with three simultaneously, with adjustment 3 master control electronic switch S1A, S1B, the control make-to-break ratio of cutting of the triode control signal in S1C regulates bucking voltage size, reach the three-phase AC voltage stabilizer of output voltage stabilization.

[four] appended drawings 1 is the AC voltage regulator main circuit of the single phase alternating current (A.C.) chopper circuit adjustment bucking voltage of the design.Accompanying drawing 2 is AC voltage regulator main circuits of the three-phase alternating current chopper circuit adjustment bucking voltage of the design.

[five] embodiment is from accompanying drawing 1: being played a reversed role by triode V1, V2 of 2 band diodes D1, D2 connects to form master control electronic switch S1, afterflow electronic switch S2 is connected to form by 2 unidirectional thyristor V3, V4 inverse parallels, 2 paraphase bidirectional electronic switch S3, S4 are formed respectively by 4 unidirectional thyristor V5 ~ V8,2 armature windings W11, W12 of conversion compensator transformer T change the phase place that secondary winding W2 compensates output voltage, and its circuit working principle is as follows:

1, at input 2 end (1, 2) voltage is higher than AC voltage-stabilizing 2 end (1, 3) during voltage, AC chopping regulating circuit is formed by master control electronic switch S1 and afterflow electronic switch S2, it exports chopping voltage after inductance L and electric capacity C filtering 1, 5 two ends become the alternating voltage with input same frequency, this voltage is by paraphase electronic switch S3) supply compensator transformer T armature winding W11 and power, its secondary system group W2 induces the voltage contrary with input voltage phase, regulate 2 triode V1 in master control electronic switch S1, V2 make-to-break ratio, bucking voltage just can be regulated to reach ac output voltage 2 end (1, 3) object of voltage stabilizing.

2, at input 2 end (1, 2) voltage is lower than AC voltage-stabilizing 2 end (1, 3) during voltage, AC chopping regulating circuit is formed by master control electronic switch S1 and afterflow electronic switch S2, it exports chopping voltage after inductance L and electric capacity C filtering 1, 5 two ends become the alternating voltage with input same frequency, this voltage supplies compensator transformer T armature winding W12 by paraphase electronic switch S4 and powers, its secondary system group W2 induces the voltage identical with input voltage phase, regulate 2 triode V1 in master control electronic switch S1, V2 make-to-break ratio, bucking voltage just can be regulated to reach ac output voltage 2 end (1, 3) object of voltage stabilizing.

3, when input 2 end (1,2) equals to exchange defeated 2 ends (1,3) voltage, or do not seek to stable pressure export time, close master control electronic switch S1, open 2 paraphase electronic switches S3, S4, compensator transformer T armature winding W11, W12 are by 2 electronic switch S3, S4 short circuits, compensator transformer T secondary winding W2 impedance is zero, inputs 2 ends (1,2) alternating voltage and leads directly to output 2 end (1,3).

From accompanying drawing 2: three-phase alternating current chopper circuit of the present invention regulates the AC voltage regulator main circuit of bucking voltage, it is the main circuit being regulated the AC voltage regulator main circuit Y-connection of bucking voltage by 3 single phase alternating current (A.C.) chopper circuits shown in accompanying drawing 1, it has 1 to exchange input and AC voltage-stabilizing exports public zero curve N, 3 three-phase alternating current input A1, B1, C1 and 3 three-phase alternating current output end of pressure-stabilizing A2, B2, C2, three-phase 380V can be exported exchange burning voltage and have three of public zero curve N single-phase 220V AC-AC burning voltages simultaneously, with adjustment 3 master control electronic switch S1A, S1B, in S1C, triode make-to-break ratio regulates bucking voltage size, reach the three-phase AC voltage stabilizer of output voltage stabilization.The compensator transformer of three-phase ac regulated power supply can be 3 single-phase compensator transformers, also can be the three-phase compensator transformer of 1 armature winding and secondary winding Y-connection.

Should it is emphasized that the single-phase and three-phase alternating current chopper circuit of the design regulates 2 and 6 paraphase electronic switches in the AC voltage regulator of bucking voltage, except with except the thyristor inverse parallel of 2 on accompanying drawing, also available 1 bidirectional thyristor electronic switch or 1 contactless solid switch etc.

The feature of the design is chopper regulation circuit is the AC voltage adjusting circuit that same inventor invents, and namely makes the AC chopping regulating circuit of afterflow electronic switch of 2 unidirectional thyristor inverse parallels, and afterflow electronic switch cost reduces 50-60%; Phase inverter is that 2 paraphase electronic switches and armature winding complete with 1 tapped compensator transformer, And and the double output AC voltage that does of paraphase electronic switch leads directly to output AC voltage.It is compared with intelligent contactless compensation type ac voltage stabilizer: without voltage regulating transformer, have the advantage that module number is little, cost is low, precision is high, cost performance is high, continuous stepless regulates bucking voltage, realize real continuous stepless and regulate bucking voltage, therefore, it is that Intelligent contactless compensates AC voltage regulator renewal product, has very large economic benefit and social benefit.

Claims

1. single-phase and three-phase alternating current chopper circuit regulates the AC voltage regulator of bucking voltage, and it is by filter capacitor C, C1, filter inductance L, 1 or 3 compensator transformer T, 1 or 3 master control electronic switch S1 or S1A, S1B, S1C, 1 or 3 afterflow electronic switch S2 or S2A, S2B, S2C, 2 or 6 paraphase electronic switch S3, S4 or S3A, S3B, S3C, S4A, S4B, S4C and control circuit composition thereof, is characterized in that: unidirectional thyristor V3, the alternating-current chopper circuit of V4 inverse parallel composition afterflow electronic switch S2 regulates bucking voltage, paraphase electronic switch S3, S4 and compensator transformer T armature winding W11, the positive negative direction of W12 control and compensation voltage, paraphase electronic switch S3, S4 holds concurrently compensator transformer T armature winding W11, W12 short switch, single phase alternating current (A.C.) stabilizator structure is the 1st ac input end (2) and compensator transformer T secondary winding W2 one end, master control electronic switch S1 one end, filter capacitor C1 one end connects, and the 1st AC voltage-stabilizing output (3) is connected with the compensator transformer T secondary winding W2 other end, the 2nd ac input end (1) and the 2nd AC voltage-stabilizing output, compensator transformer T armature winding W11 one end, armature winding W12 one end, afterflow electronic switch S2 one end, filter capacitor C one end, the filter capacitor C1 other end connects, the master control electronic switch S1 other end (4) and the afterflow electronic switch S2 other end, filter inductance L one end connects, the filter inductance L other end (5) and the filter capacitor C other end, paraphase electronic switch S3 one end, reversing phase switch S4 one end connects, the paraphase electronic switch S3 other end (6) is connected with the compensator transformer T armature winding W11 other end, the paraphase electronic switch S4 other end (7) is connected with the compensator transformer T armature winding W12 other end, and three-phase AC voltage stabilizer is made up of the Y-connection of above-mentioned 3 single phase alternating current (A.C.) pressurizers.

2. single-phase and three-phase alternating current chopper circuit according to claim 1 regulates the AC voltage regulator of bucking voltage, it is characterized in that: the make-to-break ratios that single phase alternating current (A.C.) pressurizer has 1 ac input end (2), 1 AC voltage-stabilizing output (3) exchanges the common port (1) of input and AC voltage-stabilizing output, 2 of controlling in master control electronic switch S1 full control device V1, V with 1, just reach the single phase alternating current (A.C.) pressurizer of output voltage stabilization.

3. single-phase and three-phase alternating current chopper circuit according to claim 2 regulates the AC voltage regulator of bucking voltage, it is characterized in that: the master control electronic switch that described master control electronic switch S1 is made up of 2 diodes and 2 triodes.

4. single-phase and three-phase alternating current chopper circuit according to claim 2 regulates the AC voltage regulator of bucking voltage, it is characterized in that: the master control electronic switch that described master control electronic switch S1 is made up of 4 diodes and 1 triode.

5. single-phase and three-phase alternating current chopper circuit according to claim 1 regulates the AC voltage regulator of bucking voltage, it is characterized in that: three-phase AC voltage stabilizer connects into star by 3 identical single phase alternating current (A.C.) pressurizers, 1 is had to exchange input and AC voltage-stabilizing output public zero curve N, 3 three-phase alternating current input A1, B1, C1 and 3 three-phase alternating current output end of pressure-stabilizing A2, B2, C2, can export three-phase 380V interchange burning voltage has the single-phase 220V of public zero curve N to exchange burning voltage with three simultaneously, with adjustment 3 master control electronic switch S1A, S1B, the make-to-break ratio of the triode control signal in S1C regulates bucking voltage size, reach the three-phase AC voltage stabilizer of output voltage stabilization.