CN105305837B - Single-phase and three-phase-inversion chopper power transformer compensation AC voltage-stabilized power supply - Google Patents
Single-phase and three-phase-inversion chopper power transformer compensation AC voltage-stabilized power supply Download PDFInfo
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- CN105305837B CN105305837B CN201410356584.6A CN201410356584A CN105305837B CN 105305837 B CN105305837 B CN 105305837B CN 201410356584 A CN201410356584 A CN 201410356584A CN 105305837 B CN105305837 B CN 105305837B
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 56
- 239000003990 capacitor Substances 0.000 claims abstract description 10
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- 230000001105 regulatory effect Effects 0.000 description 20
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Abstract
The single-phase and three-phase-inversion chopping power-transformation compensation alternating-current stabilized-voltage power supply is composed of 1 or 3 power-frequency compensation transformers (B), an incoming line filter capacitor (C1), chopping high-frequency LC filtering, 2 or 6 main control bidirectional fully-controlled electronic switches (S1, S2 or S1A, S2A, S1B, S2B, S1C, S2C), 2 or 6 bidirectional thyristor electronic switches (S3, S4 or S3A, S4A, S3B, S4B, S3C, S4C)), 1 or 3 follow-current bidirectional half-controlled electronic switches (S5 or S5A, S5B, S5C) and control trigger circuits thereof, and is characterized in that: the chopping master control bidirectional electronic switches of the single-phase and three-phase alternating-current stabilized power supply are used as phase-inversion electronic switches, the number of the master control electronic switches is equal to that of the bidirectional thyristor electronic switches, and the compensating transformer (B) is a power frequency transformer. It has the advantages of less harmonic wave, high power factor, continuous stepless speed, high precision up to one level, saving in energy and material.
Description
The invention relates to the technical field of phase inversion and chopping control type alternating current voltage-regulating power supplies, in particular to a chopping control alternating current voltage-regulating power supply which compensates voltage by using a power frequency transformer and takes part in phase inversion by using a master control bidirectional electronic switch.
The second background art compensation type ac voltage-stabilized power supply uses an ac voltage-regulating circuit to realize stable voltage output, and the ac voltage-regulating circuit composed of the existing controllable devices is only of two major types: the first type is a phase-control type alternating current voltage regulating circuit formed by semi-control devices such as a thyristor and the like; the second type is a chopping control alternating current voltage regulating circuit consisting of GTR and IGBT triode full-control devices. The main control bidirectional switch and the follow current bidirectional switch in the chopping control alternating current voltage regulating circuit on the existing textbook are all asymmetric chopping control alternating current voltage regulating circuits formed by triodes and rectifier diodes, and as known from the textbooks of power and electronic technology in colleges and universities and the bases of power and electronic technology published by mechanical and industrial publishers and the like, the single-phase chopping control alternating current voltage regulating circuit is only provided with three circuits, and the main control switch and the follow current switch of the single-phase chopping control alternating current voltage regulating circuit are all formed by full-control devices and rectifier diodes and are applied to an alternating current voltage stabilizing power supply. The same inventor invented two mixed device chopping control alternating current voltage stabilizing and regulating circuits (patent number: 200710137582.8) consisting of full-control devices and half-control devices in 2007, and the Gong's chopping control alternating current voltage regulating circuit which is considered to be a better circuit than the chopping control alternating current voltage regulating circuit consisting of full-control devices in textbooks is disclosed, the two Gong's chopping control voltage regulating circuits are alternating current voltage regulating circuits consisting of mixed devices, and the chopping control alternating current voltage regulating circuit capable of inverting the phase is not discovered so far.
The compensating AC voltage-stabilized source compensates the voltage with the same frequency and phase as the mains supply when the mains supply is low, and compensates the voltage with the same frequency and opposite phase to the mains supply when the mains supply is high, so that a new phase inversion chopping control AC voltage-regulating circuit which can not only regulate the voltage of the output voltage of the chopping control AC voltage-regulating circuit but also change the phase of the output voltage must be broken through to realize the large-scale application of the chopping control AC voltage-regulating circuit in the compensating AC voltage-stabilized source.
The invention is to provide a chopped AC voltage regulating circuit which can not only regulate voltage, but also output chopped AC voltage regulating voltage in a phase inversion way, and when the chopped AC voltage regulating circuit is used for a compensation type AC voltage stabilizing power supply, the chopped AC voltage regulating circuit becomes a single-phase and three-phase inversion chopped AC voltage stabilizing power supply with work change compensation.
The invention relates to a single-phase and three-phase-inversion chopping power transformer compensation alternating current stabilized power supply, which consists of 1 or 3 power frequency compensation transformers (B), an incoming line filter capacitor (C1), chopping high-frequency LC filter, 2 or 6 main control bidirectional fully-controlled electronic switches (S1, S2 or S1A, S2A, S1B, S2B, S1C and S2C), 2 or 6 bidirectional thyristor electronic switches (S3, S4 or S3A, S4A, S3B, S4B, S3C and S4C) and a control trigger circuit thereof, wherein each main control bidirectional fully-controlled electronic switch consists of 2 triodes with freewheeling diodes, each freewheeling bidirectional semi-controlled electronic switch consists of 2 unidirectional thyristors in inverse parallel connection, and is characterized in that: the compensating transformer (B) of the single-phase or three-phase AC stabilized power supply is a power frequency compensating transformer, the master control bidirectional full-control electronic switch is also used as a phase-inversion electronic switch, the number of the master control bidirectional full-control electronic switches is equal to that of the bidirectional thyristors, and the single-phase AC stabilized power supply structure comprises: the first AC input end (2) is connected with one end of a first main control bidirectional full-control electronic switch (S1), the anode of a first bidirectional thyristor electronic switch (S3), one end of a secondary winding (W2) of a power frequency compensation transformer (B) and one end of an incoming line filter capacitor (C1), the second AC input end (1) is connected with one end of a second main control bidirectional full-control electronic switch (S2), the anode of a second bidirectional thyristor electronic switch (S4), the other end of a filter capacitor (C1) and a second AC output end, the other end (4) of the first main control bidirectional full-control electronic switch (S1) is connected with the other end of the second main control bidirectional full-control electronic switch (S2), one end of a follow current bidirectional half-control electronic switch (S5) and one end of a high-frequency inductor filter (L) thyristor, the cathode (5) of the first bidirectional electronic switch (S3) is connected with the cathode of the second bidirectional electronic follow current switch (S4) and the other end of the follow current switch (S5), High frequency filter capacitor (C) one end, power frequency compensation transformer (B) primary winding (W1) one end is connected, power frequency compensation transformer (B) primary winding (W1) other end (6) and high frequency filter inductance (L) other end, high frequency filter capacitor (C) other end are connected, 1 st alternating current output end (3) and power frequency compensation transformer (B) secondary winding (W2) other end are connected, three-phase alternating current stabilized voltage power supply comprises above-mentioned 3 single phase alternating current stabilized voltage power star connection.
The single-phase AC voltage-stabilized power supply of the invention has 1 AC input end (2), 1 AC voltage-stabilized output end (3) and 1 AC input and output public end (1), controls 2 main control bidirectional full-control electronic switches (S1, S2), and achieves the AC voltage-stabilized power supply with stable output voltage. The 2 main control bidirectional full-control electronic switches (S1, S2) are bidirectional full-control electronic switches composed of 2 rectifier tubes and 2 full-control devices, or bidirectional full-control electronic switches composed of 4 rectifier tubes and 1 full-control device.
The invention relates to an alternating current stabilized voltage supply for supplying a compensation voltage by a three-phase-inversion chopping power frequency transformer, which is characterized in that: the three-phase AC stabilized power supply is formed by connecting 3 same single-phase AC stabilized power supplies into a star shape, and has 1 AC input and output public zero end (N), 3 three-phase AC input ends (A1, B1 and C1) and 3 three-phase AC stabilized output ends (A2, B2 and C2), can simultaneously output three-phase 380V AC stabilized voltage and three single-phase 220V AC stabilized voltages with the public zero line (N), and adjusts the compensation voltage by adjusting the chopping control ratio of full control devices in 6 main control bidirectional full control electronic switches (S1A, S2A, S1B, S2B, S1C and S2C), so as to obtain the three-phase AC stabilized power supply with stable output voltage. The compensating transformer of the three-phase alternating current stabilized voltage power supply can be 3 single-phase compensating transformers, and can also be a three-phase compensating transformer with 1 primary winding and 1 secondary winding in star connection.
Figure 1 is a main circuit of a single-phase-inversion chopping work change compensation alternating current stabilized power supply. FIG. 2 is a main circuit of a three-phase-inversion chopper power transformer compensation AC stabilized power supply.
The detailed implementation mode can be known from the attached figure 1: it combines the two of the two-way electronic switch' S inverter circuit and the chopping control type AC voltage regulating circuit, and changes the 2 bidirectional thyristor semi-controlled electronic switches in the two-way inverter electronic switch into 2 bidirectional full-controlled electronic switches (S1, S2), and uses them as the main control bidirectional full-controlled electronic switches in the positive and negative directions in the chopping control AC voltage regulating circuit, the working principle of the main circuit in the attached figure 1 is as follows:
(a) when the voltage of the input 2 ends (1 and 2) is higher than the voltage of the output 2 ends (1 and 3), trigger signals are added to the positive and negative half cycles of the bidirectional thyristor (S4), and no trigger signal is added to the master bidirectional electronic switch (S2) and the bidirectional thyristor (S3).
When the end of the alternating current input (2) is positive and the end of the alternating current input (1) is negative, a trigger signal is added to the whole positive half cycle of the unidirectional thyristor V5, the trigger signal is not added to the unidirectional thyristor V6, the positive half cycle alternating current flows through the triode V1, the diode D2, the inductor L, the primary winding W1 of the power frequency compensation transformer, the chopping of the electronic switch (S4) of the bidirectional thyristor and the follow current bidirectional electronic switch V5, and the voltage opposite to the positive half cycle of the alternating current input end (2) is induced in the secondary winding W2 of the power frequency compensation transformer.
When the AC input end (2) is negative and the end (1) is positive, a trigger signal is added to the whole negative half cycle of the unidirectional thyristor V6, the unidirectional thyristor V5 is not triggered, the negative half cycle AC current flows through the bidirectional thyristor S4, the primary winding W1 of the high-frequency transformer, the high-frequency filter inductor L, the triode V2, the chopping of the diode D1 and the freewheeling of the unidirectional thyristor V6, and the voltage opposite to the negative half cycle of the AC input end (2) is induced on the secondary winding W2 of the power frequency compensator (B). Therefore, when the alternating voltage is input at the 2 ends (1 and 2) of the alternating voltage input end, the compensation voltage value of the 2 ends (1 and 3) of the alternating current output can be adjusted by only adjusting the on-off ratio of the control signals on the control electrodes of the 2 triodes V1 and V2, and the stabilized voltage of the input voltage higher than the output voltage can be achieved by controlling the control electrode signals of the 2 triodes V1 and V2 through negative feedback of the output voltage.
(b) When the voltage of the input 2 ends (1 and 2) is lower than the voltage of the output 2 ends (1 and 3), trigger signals are added to the positive and negative half cycles of the bidirectional thyristor (S3), and no trigger signal is added to the main control bidirectional electronic switch (S1) and the bidirectional thyristor (S4).
When the end of the AC input (2) is positive and the end of the AC input (1) is negative, a trigger signal is added to the whole positive half cycle of the unidirectional thyristor V6, the trigger signal is not added to the unidirectional thyristor V5, the positive half cycle AC current flows through the bidirectional thyristor electronic switch S3, the primary winding W1 of the power frequency compensation transformer, the filter inductor L, the triode V4, the chopping and follow current bidirectional thyristor V6 of the diode D3, and the same voltage as the positive half cycle of the AC input end (2) is induced on the secondary winding W2 of the power frequency compensation transformer (B).
When the AC input end (2) is negative and the end (1) is positive, a trigger signal is added to the whole positive half cycle of the unidirectional thyristor V5, the unidirectional thyristor V6 is not triggered, the negative half cycle AC current flows through a triode V3, a diode D4, a high-frequency filter inductor, a primary winding W1 of a high-frequency transformer B, chopping of a bidirectional thyristor electronic switch S3 and a unidirectional thyristor V5, and the same voltage as the negative half cycle of the AC input end (2) is induced in a secondary winding W2 of the power frequency compensator (B). Therefore, when the alternating voltage is input at the 2 ends (1 and 2) of the alternating voltage input end, the compensation voltage value of the 2 ends (1 and 3) of the alternating current output can be adjusted by only adjusting the on-off ratio of the control signals on the control electrodes of the 2 triodes V13 and V4, and the stabilized voltage of the input voltage lower than the output voltage can be achieved by controlling the control electrode signals of the 2 triodes V3 and V4 through negative feedback of the output voltage.
As can be seen from fig. 2: the three-phase-inversion chopping power transformer compensation AC stabilized voltage supply is formed by connecting 3 single-phase-inversion chopping power transformer compensation AC stabilized voltage supply main circuits shown in figure 1 in a star shape, and comprises 1 AC input and AC stabilized voltage output public zero end (N), 3 three-phase AC input ends (A1, B1 and C1) and 3 three-phase AC stabilized voltage output ends (A2, B2 and C2), can simultaneously output three-phase 380V AC stabilized voltage and three single-phase 220V AC stabilized voltages with a public zero line (N), and regulates the compensation voltage by regulating the chopping control on-off ratio of full-control devices in 6 main control bidirectional full-control electronic switches (S1A, S2A, S1B, S2B, S1C and S2C) to obtain the three-phase AC stabilized voltage supply with stable output voltage. The power frequency compensation transformer of the three-phase alternating current stabilized voltage power supply can be 3 single-phase power frequency compensation transformers, and can also be a three-phase power frequency compensation transformer with 1 primary winding and 1 secondary winding in star connection.
The invention has the advantages of high power factor, less harmonic wave, continuous stepless, contactless, high precision and the like, and is an updating product of the existing intelligent contactless AC stabilized power supply and the AC stabilized power supply regulated by the carbon brush.
Claims (1)
1. The three-phase inversion chopping power transformer compensation AC stabilized voltage supply comprises 3 single-phase inversion chopping power transformer compensation AC stabilized voltage supplies, wherein the 3 single-phase inversion chopping power transformer compensation AC stabilized voltage supplies are connected into a star shape, 1 AC input and AC stabilized voltage output public zero line N are provided, 3 three-phase AC input ends A1, B1, C1 and 3 three-phase AC stabilized voltage output ends A2, B2 and C2 are provided, the single-phase inversion chopping power transformer compensation AC stabilized voltage supply comprises filter capacitors C1, C, a filter inductor L, a power frequency compensation transformer B, 5 bidirectional electronic switches S1-S5 and a control circuit thereof, a1 st AC input end (2) is connected with one end of a1 st main control bidirectional electronic switch S1, an anode of a1 st bidirectional thyristor electronic switch S3, one end of a secondary winding W2 of the compensation transformer B and one end of an inlet wire filter capacitor C1, and a2 nd AC input end (1) is connected with one end of a2 nd bidirectional main, The anode of a2 nd bidirectional thyristor electronic switch S4, the other end of a filter capacitor C1 and the output end are connected, the other end (4) of a1 st main control bidirectional electronic switch S1 is connected with the other end of a2 nd main control bidirectional electronic switch S2, one end of a follow current bidirectional electronic switch S5 and one end of a high-frequency filter inductor L, the cathode (5) of a1 st bidirectional thyristor electronic switch S3 is connected with the cathode of a2 nd bidirectional thyristor electronic switch S4, the other end of a follow current bidirectional electronic switch S5, one end of a high-frequency filter capacitor C and one end of a primary winding W1 of a power frequency compensation transformer B, the other end (6) of a primary winding W1 of the power frequency compensation transformer B is connected with the other end of the high-frequency filter inductor L and the other end of the high-frequency filter.
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| CN201410356584.6A CN105305837B (en) | 2014-07-15 | 2014-07-15 | Single-phase and three-phase-inversion chopper power transformer compensation AC voltage-stabilized power supply |
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| CN105305837B true CN105305837B (en) | 2020-06-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123401A (en) * | 2007-08-09 | 2008-02-13 | 龚秋声 | Cutting control AC voltage adjusting circuit and its application |
| CN101364117A (en) * | 2008-09-26 | 2009-02-11 | 刘臻 | Non-complementary chop controlling intelligent AC voltage-stabilizing and pressure regulating method and device |
| US7834597B1 (en) * | 2007-08-24 | 2010-11-16 | Fairchild Semiconductor Corporation | System and method for AC voltage regulation |
| CN204046427U (en) * | 2014-07-15 | 2014-12-24 | 龚秋声 | Single-phase and three-phase paraphase copped wave work becomes compensation AC voltage regulator |
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| US9030852B2 (en) * | 2012-05-31 | 2015-05-12 | General Electric Company | System for power conversion utilizing matrix converters |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123401A (en) * | 2007-08-09 | 2008-02-13 | 龚秋声 | Cutting control AC voltage adjusting circuit and its application |
| US7834597B1 (en) * | 2007-08-24 | 2010-11-16 | Fairchild Semiconductor Corporation | System and method for AC voltage regulation |
| CN101364117A (en) * | 2008-09-26 | 2009-02-11 | 刘臻 | Non-complementary chop controlling intelligent AC voltage-stabilizing and pressure regulating method and device |
| CN204046427U (en) * | 2014-07-15 | 2014-12-24 | 龚秋声 | Single-phase and three-phase paraphase copped wave work becomes compensation AC voltage regulator |
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