CN204993073U - AC voltage stabilizer that offset voltage was adjusted in copped wave is flowed in single -phase and three -phase double cross - Google Patents

Abstract

This design belongs to 2 and exchanges the single -phase of chopper circuit regulation compensation formula and three -phase AC stabiliser, it is by the correction transformer, and a filter capacitor, filter inductor, two -way electronic switch and regulation control circuit constitute 2 and exchange the chopper control circuit, the correction transformer is connected 2 differences that exchange 2 alternating voltage of output acquisition of chopper control circuit, 2 individual interchange chopper circuit master control two -way electronic switch comprise 2 diodes and 2 triodes, and 2 two -way electronic switch of afterflow constitute with 2 unidirectional thyristor. As long as 2 copped wave on -off ratios that exchange chopper circuit's copped wave are implemented retroegulation and are just enabled correction transformer T and just can obtain bidirectional compensation voltage and make output voltage reach the stability. This design and half -bridge exchange the AC voltage stabilizer that chopper circuit adjusted the compensation and compare, with 2 two -way electronic switch substitution paraphase auto transformer, have apparent energy -conservation, material -saving, small and light in weight's advantage. Compare with the application for invention patent who commits to last month, do not have a plurality of two -way electronic switch's conversion in accommodation process, better work is more reliable to have the continuity.

Description

The AC voltage regulator of single-phase and three-phase double cross stream chopper regulation bucking voltage

[one] technical field the present invention relates to the AC voltage regulator that AC chopping regulates bucking voltage, relates to the single-phase and three-phase AC voltage stabilizer that use 2 alternating-current chopper circuits regulate bucking voltage.

[two] the domestic employing alternating-current chopper circuit of background technology regulates the compensation type ac voltage stabilizer of bucking voltage, solves boosting compensate and the problem of drop compensation with compensator transformer bucking voltage and 4 bidirectional electronic switch commutations.After same inventor has invented half-bridge AC chopping bidirectional pressure regulating circuit, just do not need the problem solving boosting and drop compensation voltage with 4 commutation bidirectional electronic switch, but increase by 1 power frequency commutation autotransformer, for not using this autotransformer, the bridge-type AC chopping bidirectional pressure regulating circuit (application number 201510173812 that same inventor invents again this year, 0) and hand over hand over bridge-type copped wave bidirectional pressure regulating circuit (201510173813.5), the control mode of these 2 kinds of circuit also also exist compensate to drop compensation by boosting all will by the problem of 2 bidirectional electronic switch commutations.

[three] two AC chopping bidirectional pressure regulating circuit application for a patent for invention that summary of the invention the object of the invention is to use same inventor to invent manufactures and designs the single-phase and three-phase ac regulated power supply by compensator transformer bucking voltage.

The AC voltage regulator of the single-phase double cross stream chopper regulation bucking voltage of the design, by filter capacitor C1, C2, filter inductance L1, L2, compensator transformer T, 4 bidirectional electronic switch S1 ~ S4 and control circuit composition thereof, 4 bidirectional electronic switch connect into bridge-type, it is characterized in that: by master control bidirectional electronic switch S1, afterflow bidirectional electronic switch S2 and choke-condenser filter L1C1 forms the 1st AC chopping regulating circuit, by master control bidirectional electronic switch S3, afterflow bidirectional electronic switch S4 and choke-condenser filter L2C2 forms the 2nd AC chopping regulating circuit, master control bidirectional electronic switch S1, S3 is made up of 2 diodes and 2 triodes, and afterflow bidirectional electronic switch forms to unidirectional thyristor by 2, the master control bidirectional electronic switch S1 of 2 alternating-current chopper circuits, S3 make-to-break ratio regulates round about, and compensator transformer T armature winding W1 is connected to the not common output (3 of 2 alternating-current chopper circuits, 4), the 1st ac voltage input (1) and compensator transformer T secondary winding W2 one end, master control bidirectional electronic switch S1 one end, master control bidirectional electronic switch S3 one end connects, and the 1st AC voltage-stabilizing voltage output end (5) is connected with compensation transformation T in the age secondary winding W2 other end, the 2nd ac voltage input (2) and the 2nd AC voltage-stabilizing voltage output end, filter capacitor C1 one end, filter capacitor C2 one end, afterflow bidirectional electronic switch S2 one end, afterflow bidirectional electronic switch S4 one end connects, filter inductance L1 one end (6) and the master control bidirectional electronic switch S1 other end, the afterflow bidirectional electronic switch S2 other end connects, the filter inductance L1 other end (3) and the filter capacitor C1 other end, compensator transformer T armature winding W1 one end connects, filter inductance L2 one end (7) and the master control bidirectional electronic switch S3 other end, the afterflow bidirectional electronic switch S4 other end connects, the filter inductance L2 other end (4) and the filter capacitor C2 other end, the compensator transformer T armature winding W1 other end connects.

The AC voltage regulator of the three-phase double cross stream chopper regulation bucking voltage of the design, the AC voltage regulator of bucking voltage is regulated to connect into star by 3 single-phase pair of alternating-current chopper circuits, 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, as long as automatically regulate 6 master control bidirectional electronic switch S1A, S1B, S1C, S3A, S3B, the copped wave make-to-break ratio of S3C, 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.

[four] appended drawings 1 is the AC voltage regulator main circuit diagram of single-phase double cross stream chopper regulation bucking voltage.Accompanying drawing 2 is AC voltage regulator main circuits of three-phase double cross stream chopper regulation bucking voltage.

[five] single-phase pair of alternating-current chopper circuit of embodiment accompanying drawing 1 regulates the AC voltage regulator operation principle of bucking voltage as follows: form the 1st AC chopping regulating circuit by master control bidirectional electronic switch S1, afterflow bidirectional electronic switch S2 and choke-condenser filter L1C1, obtains the adjustable compensation voltage U 32 identical with 2 ac voltage inputs (1,2) phase place at 2 ac voltage outputs (3,2).Form the 2nd AC chopping regulating circuit by master control bidirectional electronic switch S3, afterflow bidirectional electronic switch S4 and choke-condenser filter L2C2, obtain the adjustable compensation voltage U 42 identical with 2 ac voltage inputs (1,2) phase place at 2 ac voltage outputs (4,2).Compensator transformer T armature winding W1 is just connected to the 1st AC chopping regulating circuit 1 alternating voltage and exports between auspicious (3) and the 2nd AC chopping regulating circuit 1 ac voltage output (4), therefore, the AC compensation voltage U 34 that compensator transformer armature winding W1 two ends obtain is differences of the 1st and the 2nd AC chopping regulating circuit output voltage, when the copped wave make-to-break ratio of 2 AC chopping regulating circuits is identical, 2 AC chopping regulating circuit output AC voltages are identical, and on W1 winding, alternating voltage is zero.When the copped wave make-to-break ratio of the 1st AC chopping regulating circuit is greater than the copped wave make-to-break ratio of the 2nd AC chopping regulating circuit, on W1 winding, alternating voltage 3 end is just, 4 ends are negative.When the copped wave make-to-break ratio of the 1st AC chopping regulating circuit is less than the copped wave make-to-break ratio of the 2nd AC chopping regulating circuit, on W1 winding, alternating voltage 3 end is negative, and 4 ends are just.As long as the copped wave make-to-break ratio of the 2nd alternating-current chopper circuit is transferred to maximum by minimum value while the copped wave make-to-break ratio of the 1st alternating-current chopper circuit is transferred to minimum value by maximum, alternating voltage on W1 winding just can realize the two-way continuous stepless pressure regulation without transfer point, the compensator transformer T secondary winding W2 being connected on AC power 1 input (1) and voltage stabilizing AC power 1 output (5) just can obtain bidirectional compensating voltage, makes the voltage of output AC voltage 2 end (5,2) reach stable.

Accompanying drawing 2 is by the AC voltage regulator Y-connection of the single-phase double cross stream chopper regulation bucking voltage shown in 3 accompanying drawings 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, with automatically regulating cutting control make-to-break ratio and just exporting three-phase 380V interchange burning voltage and have 3 of public zero curve N single-phase 220V and exchange the three-phase AC voltage stabilizer of burning voltage of 6 master control bidirectional electronic switch S1A, S1B, S1C, S3A, S3B, S3C simultaneously.

The half-bridge AC chopping that the design and same designer design regulates compared with the AC voltage regulator that compensates, substitutes paraphase autotransformer with 2 bidirectional electronic switch, have significantly energy-conservation, material-saving, volume are little and lightweight advantage.Compared with 2 applications for a patent for invention submitted to last month, do not have the conversion of multiple bidirectional electronic switch in adjustment process, the more reliable continuity that works is better.

Claims (2)

1. the AC voltage regulator of single-phase pair of alternating-current chopper circuit adjustment bucking voltage, by filter capacitor C1, C2, filter inductance L1, L2, compensator transformer T, 4 bidirectional electronic switch S1 ~ S4 and control circuit composition thereof, 4 bidirectional electronic switch connect into bridge-type, it is characterized in that: by master control bidirectional electronic switch S1, afterflow bidirectional electronic switch S2 and choke-condenser filter L1C1 forms the 1st AC chopping regulating circuit, by master control bidirectional electronic switch S3, afterflow bidirectional electronic switch S4 and choke-condenser filter L2C2 forms the 2nd AC chopping regulating circuit, master control bidirectional electronic switch S1, S3 is made up of 2 diodes and 2 triodes, and afterflow bidirectional electronic switch forms to unidirectional thyristor by 2, the master control bidirectional electronic switch S1 of 2 alternating-current chopper circuits, S3 make-to-break ratio regulates round about, and compensator transformer T armature winding W1 is connected to the not common output (3 of 2 alternating-current chopper circuits, 4), the 1st ac voltage input (1) and compensator transformer T secondary winding W2 one end, master control bidirectional electronic switch S1 one end, master control bidirectional electronic switch S3 one end connects, and the 1st AC voltage-stabilizing voltage output end (5) is connected with compensation transformation T in the age secondary winding W2 other end, the 2nd ac voltage input (2) and the 2nd AC voltage-stabilizing voltage output end, filter capacitor C1 one end, filter capacitor C2 one end, afterflow bidirectional electronic switch S2 one end, afterflow bidirectional electronic switch S4 one end connects, filter inductance L1 one end (6) and the master control bidirectional electronic switch S1 other end, the afterflow bidirectional electronic switch S2 other end connects, the filter inductance L1 other end (3) and the filter capacitor C1 other end, compensator transformer T armature winding W1 one end connects, filter inductance L2 one end (7) and the master control bidirectional electronic switch S3 other end, the afterflow bidirectional electronic switch S4 other end connects, the filter inductance L2 other end (4) and the filter capacitor C2 other end, the compensator transformer T armature winding W1 other end connects.

2. the two alternating-current chopper circuit of three-phase regulates the AC voltage regulator of bucking voltage, comprise the AC voltage regulator that 3 single-phase pair of alternating-current chopper circuits according to claim 1 regulate bucking voltage, it is characterized in that: 3 single-phase pair of alternating-current chopper circuits according to claim 1 regulate the AC voltage regulator of bucking voltage to connect into star, 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.