CN106655820A - Single-phase photocoupling current-doubling type voltage reduction rectifier - Google Patents

Single-phase photocoupling current-doubling type voltage reduction rectifier Download PDF

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Publication number
CN106655820A
CN106655820A CN201710144737.4A CN201710144737A CN106655820A CN 106655820 A CN106655820 A CN 106655820A CN 201710144737 A CN201710144737 A CN 201710144737A CN 106655820 A CN106655820 A CN 106655820A
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China
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input end
circuit module
photoelectrical coupler
direct current
inductance
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CN201710144737.4A
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Inventor
廖无限
肖强晖
任于涵
胡正国
易椠椠
戴启
廖晓宇
肖雅文
张健
湛政
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Hunan University of Technology
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Hunan University of Technology
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Priority to CN201710144737.4A priority Critical patent/CN106655820A/en
Publication of CN106655820A publication Critical patent/CN106655820A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The invention discloses a single-phase photocoupling current-doubling type voltage reduction rectifier. The single-phase photocoupling current-doubling type voltage reduction rectifier comprises a main circuit module and a control circuit module, wherein the main circuit module comprises two alternating current input ports, two direct current output ports and a main circuit; and the control circuit module comprises two alternating current input ports and a control circuit. The single-phase photocoupling current-doubling type voltage reduction rectifier has the characteristics of simple design, reasonable structure, convenient establishment and low cost; compared with a conventional current-doubling rectifier, the single-phase photocoupling current-doubling type voltage reduction rectifier does not require a voltage reduction transformer at the input end to be matched therewith; and in addition, on the aspects of alternating current input power supply matching, the single-phase photocoupling current-doubling type voltage reduction rectifier is applicable to a conventional method, as well as suitable for high, medium and low-frequency alternating current input power supplies with the forms of sine waves, triangular waves, sawtooth waves and the like.

Description

Single-phase optocoupler times flow pattern buck rectifier
Technical field
The present invention relates to flow pattern rectifier again, is that one kind is related to single-phase optocoupler times flow pattern buck rectifier more specifically.
Background technology
Currently, it is used in traditional current doubler rectifier in high-frequency rectification field more, compared with full-wave rectifying circuit, times stream rectification The vice-side winding of the high frequency transformer of device only needs a single winding, without centre cap；Compared with full bridge rectifier, times stream The few half of number of diodes that rectification circuit is used.Therefore, current-doubling rectifier combines full-wave rectifying circuit and full-bridge rectification The advantage of both circuits.Certainly, current-doubling rectifier will use an output inductor, structure slightly complicated more.But this electricity The operating frequency of sense and conveying electric current are the half of inductance used by full-wave rectifying circuit, thus can be made it is less, also beneficial to dissipating Heat, additionally it is possible to reduce and improve the ripple of output voltage.But traditional some problems of the current doubler rectifier person of there is also need into one Step is solved：
（1）Traditional current doubler rectifier is exported to realize step-down rectifier, generally to increase step-down transformer therewith in its input Matched, thus can be produced higher cost；
（2）Traditional current doubler rectifier is suitable only for high-frequency rectification circuit, and its ac input end needs to provide the symmetrical positive and negative side of high frequency Ripple power supply, is generally unsuitable for the ac input end power supply of the other forms such as sine wave, triangular wave, sawtooth waveforms.
The content of the invention
In view of this, the present invention is intended to provide a kind of single-phase optocoupler times flow pattern buck rectifier, can overcome tradition times to flow The defect that rectifier is present.
Traditional current doubler rectifier generally will increase step-down and become to realize the function that step-down rectifier is exported in ac input end Depressor is matched therewith, and the primary conductive pathway of every half work period is brought out from the one of the secondary side of step-down transformer Send out, Jing inductance, output loading, one of diode return the other end of the secondary side of step-down transformer, now conform to the principle of simplicity From the point of view of in the quantitative relationship of change, output voltage is equal to the pressure that the AC-input voltage of the secondary side of step-down transformer is deducted on inductance Drop and the pressure drop of diode, but the linear zone of diode is narrower, it operates mainly in switch region, because diode pressure drop very It is little, if ignoring the pressure drop of diode, it is believed that it is secondary that the main output voltage of every half work period is equal to step-down transformer The AC-input voltage of side deducts pressure drop on inductance.If diode is substituted for the photoelectrical coupler of linear zone wider range, Step-down transformer is rejected simultaneously, then the main output voltage of current doubler rectifier deducts the pressure drop on inductance equal to AC-input voltage, The pressure drop between photoelectrical coupler output par, c port is deducted again, it is also possible to realize the step-down rectifier output of current doubler rectifier.
In order to realize the purpose of foregoing invention, the present invention specifically provides single-phase optocoupler times flow pattern buck rectifier technical scheme It is：Including main circuit module and control circuit module two large divisions.
（1）Described main circuit module includes two ac input end mouths, two direct current output ports and a main circuits, Two of which ac input end mouth is respectively ac input end mouth ACH-in1With ac input end mouth ACH-in2, two direct current outputs Port is respectively direct current output port DCOUT+With direct current output port DCOUT-, further, main circuit again by inductance L1, inductance L2, Photoelectrical coupler U1 output par, cs and photoelectrical coupler U2 output par, cs are constituted, ac input end mouth ACH-in1With photoelectrical coupler The emitter stage of U2 output par, cs, one end of inductance L2 are connected, the other end and the direct current output port DC of inductance L2OUT+, inductance L1 One end be connected, the other end of inductance L1 and the emitter stage of photoelectrical coupler U1 output par, cs, ac input end mouth ACH-in2Phase Even, the colelctor electrode of photoelectrical coupler U1 output par, cs and the colelctor electrode of photoelectrical coupler U2 output par, cs, direct current output port DCOUT-It is connected；
（2）Described control circuit module includes two ac input end mouths and a control circuit, two of which exchange input Port is respectively ac input end mouth ACL-in1With ac input end mouth ACL-in2, further, control circuit is again by resistance R1, electricity Resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouth ACL-in1With resistance R1 One end be connected with one end of resistance R2, ac input end mouth ACL-in2Diode cathode with photoelectrical coupler U1 importations, The diode anode of photoelectrical coupler U2 importations is connected, the other end of resistance R1 and the two of photoelectrical coupler U1 importations Pole pipe anode is connected, and the other end of resistance R2 is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouth AC of main circuit moduleH-in1Connect with input bus Line1 is exchanged, its ac input end mouth ACH-in2It is connected with input bus Line2 is exchanged, the ac input end mouth AC of control circuit moduleL-in1With exchange input bus Line1 is connected, its ac input end mouth ACH-in2It is connected with input bus Line2 is exchanged, the direct current output port of main circuit module DCOUT+With direct current output port DCOUT-Between be used for external load RL；
（4）Exchange input bus Line1 and exchange input bus Line2 between operating voltage cycle be divided into positive half period and Negative half-cycle two large divisions：
When positive half period is operated in, described control circuit module only has a guiding path, and described main circuit module has Two guiding paths, the guiding path of wherein control circuit module is that Jing exchanges input bus Line1 until ac input end ACL-in1, resistance R1, photoelectrical coupler U1 importations, ac input end ACL-in2, then to exchange input bus Line2；
And first guiding path of main circuit module is Jing exchange input bus Line1 until ac input end ACH-in1, electricity Sense L2, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U1 output par, cs with exchange Input ACH-in2, then to exchange input bus Line2；The Article 2 guiding path of main circuit module, mainly by inductance L1 Jing After previous negative half-cycle energy storage, the continuous current circuit formed in positive half period, i.e., from inductance L1, through DC output end Mouth DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U1 output par, cs, inductance L1 is returned；
When negative half-cycle is operated in, described control circuit module also has a guiding path, described main circuit module There are two guiding paths, the guiding path of wherein control circuit module is that Jing exchanges input bus Line2 until ac input end ACL-in2, photoelectrical coupler U2 importations, resistance R2, ac input end ACL-in1, then to exchange input bus Line1；
And first guiding path of main circuit module is Jing exchange input bus Line2 until ac input end ACH-in2, electricity Sense L1, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U2 output par, cs with exchange Input ACH-in1, then to exchange input bus Line1；The Article 2 guiding path of main circuit module, mainly by inductance L2 Jing After previous positive half period energy storage, the continuous current circuit formed in negative half-cycle, i.e., from inductance L2, through DC output end Mouth DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U2 output par, cs, inductance L2 is returned；In addition, Either it is operated in positive half period or negative half-cycle, direct current output port DCOUT+Voltage be higher than direct current output port DCOUT- Voltage, period all benefits from the effect of inductance L1 and inductance L2 energy storage and afterflow, not only realizes single-phase rectifier function again, and And realize times a stream rectification function.
The invention has the beneficial effects as follows, there is provided a kind of single-phase optocoupler times flow pattern buck rectifier, with design is simple, structure Rationally, convenient, with low cost characteristic is built, compared with traditional current doubler rectifier, not only in its input without the need for increasing step-down Transformer is matched therewith, and in terms of its alternating current input power supplying matching, is not only suitable for conventional square wave, and suitable for just The height of the other forms such as string ripple, triangular wave, sawtooth waveforms, neutralization low-frequency ac input power.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme, below will be in embodiment or technical scheme description The required accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only the more typical reality of the present invention The explanation of a structure composition or circuit diagram is applied, for those skilled in the art, on the premise of not paying creative work, Can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of canonical schema of traditional current doubler rectifier.
Fig. 2 is a kind of canonical schema of single-phase optocoupler times flow pattern buck rectifier.
Fig. 3 is that single-phase optocoupler times flow pattern buck rectifier is operated in positive half period guiding path schematic diagram.
Fig. 4 is that single-phase optocoupler times flow pattern buck rectifier is operated in negative half-cycle guiding path schematic diagram.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technology of the present invention composition, technical scheme and embodiment are clearly and completely described, it is clear that described reality Apply a part of embodiment that example is only the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, this area The other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to the model of present invention protection Enclose.
In conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figure 1, it is a kind of canonical schema of traditional current doubler rectifier, traditional current doubler rectifier is to realize step-down The function of rectification output, generally will increase step-down transformer and be matched therewith in ac input end, every half work period Primary conductive pathway is one end of the secondary side from step-down transformer, Jing inductance, output loading, one of those two pole Pipe, returns the other end of the secondary side of step-down transformer, and now in simplified quantitative relationship, output voltage is equal to drop The AC-input voltage of the secondary side of pressure transformer deducts the pressure drop of the pressure drop on inductance and diode, but diode is linear Area is narrower, and it operates mainly in switch region, because of the pressure drop very little of diode, if ignoring the pressure drop of diode, it is believed that per half The main output voltage of individual work period is equal to the AC-input voltage of step-down transformer secondary side and deducts pressure drop on inductance.In addition There is a continuous current circuit every half work period, additionally it is possible to reduce and improve the ripple of output voltage.
As shown in Figure 2, be a kind of canonical schema of single-phase optocoupler times flow pattern buck rectifier, including main circuit module and Control circuit module two large divisions；
（1）Described main circuit module includes two ac input end mouths, two direct current output ports and a main circuits, wherein Two ac input end mouths are respectively ac input end mouth ACH-in1With ac input end mouth ACH-in2, two direct current output ports Respectively direct current output port DCOUT+With direct current output port DCOUT-, further, main circuit is again by inductance L1, inductance L2, photoelectricity Coupler U1 output par, cs and photoelectrical coupler U2 output par, cs are constituted, ac input end mouth ACH-in1It is defeated with photoelectrical coupler U2 Go out the emitter stage of part, one end of inductance L2 to be connected, the other end and the direct current output port DC of inductance L2OUT+, inductance L1 one End is connected, the other end of inductance L1 and the emitter stage of photoelectrical coupler U1 output par, cs, ac input end mouth ACH-in2It is connected, light The colelctor electrode of electric coupler U1 output par, cs and colelctor electrode, the DC of direct current output port of photoelectrical coupler U2 output par, csOUT- It is connected；
（2）Described control circuit module includes two ac input end mouths and a control circuit, two of which exchange input Port is respectively ac input end mouth ACL-in1With ac input end mouth ACL-in2, further, control circuit is again by resistance R1, electricity Resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouth ACL-in1With resistance R1 One end be connected with one end of resistance R2, ac input end mouth ACL-in2Diode cathode with photoelectrical coupler U1 importations, The diode anode of photoelectrical coupler U2 importations is connected, the other end of resistance R1 and the two of photoelectrical coupler U1 importations Pole pipe anode is connected, and the other end of resistance R2 is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouth AC of main circuit moduleH-in1Connect with input bus Line1 is exchanged, its ac input end mouth ACH-in2It is connected with input bus Line2 is exchanged, the ac input end mouth AC of control circuit moduleL-in1With exchange input bus Line1 is connected, its ac input end mouth ACH-in2It is connected with input bus Line2 is exchanged, the direct current output port of main circuit module DCOUT+With direct current output port DCOUT-Between be used for external load RL.
The cycle of operating voltage between exchange input bus Line1 and exchange input bus Line2 is divided into positive half period With negative half-cycle two large divisions.
As shown in Figure 3, it is that single-phase optocoupler times flow pattern buck rectifier is operated in positive half period guiding path schematic diagram, when When being operated in positive half period, described control circuit module only has a guiding path, and described main circuit module has two to lead The guiding path of path, wherein control circuit module is Jing exchange input bus Line1 until ac input end ACL-in1, electricity Resistance R1, photoelectrical coupler U1 importations, ac input end ACL-in2, then to exchange input bus Line2；
And first guiding path of main circuit module is Jing exchange input bus Line1 until ac input end ACH-in1, electricity Sense L2, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U1 output par, cs with exchange Input ACH-in2, then to exchange input bus Line2；The Article 2 guiding path of main circuit module, mainly by inductance L1 Jing After previous negative half-cycle energy storage, the continuous current circuit formed in positive half period, i.e., from inductance L1, through DC output end Mouth DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U1 output par, cs, inductance L1 is returned.
As shown in Figure 4, it is that single-phase optocoupler times flow pattern buck rectifier is operated in negative half-cycle guiding path schematic diagram, when When being operated in negative half-cycle, described control circuit module also has a guiding path, and described main circuit module also has two The guiding path of guiding path, wherein control circuit module is Jing exchange input bus Line2 until ac input end ACL-in2、 Photoelectrical coupler U2 importations, resistance R2, ac input end ACL-in1, then to exchange input bus Line1；
And first guiding path of main circuit module is Jing exchange input bus Line2 until ac input end ACH-in2, electricity Sense L1, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U2 output par, cs with exchange Input ACH-in1, then to exchange input bus Line1；The Article 2 guiding path of main circuit module, mainly by inductance L2 Jing After previous positive half period energy storage, the continuous current circuit formed in negative half-cycle, i.e., from inductance L2, through DC output end Mouth DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U2 output par, cs, inductance L2 is returned；In addition, Either it is operated in positive half period or negative half-cycle, direct current output port DCOUT+Voltage be higher than direct current output port DCOUT- Voltage, period all benefits from the effect of inductance L1 and inductance L2 energy storage and afterflow, not only realizes single-phase rectifier function again, and And realize times a stream rectification function.
The above, is only presently preferred embodiments of the present invention, and any pro forma restriction is not made to the present invention.If If carrying out various changes and modifications to embodiment of the present invention, but still within the spirit and principles in the present invention, should be included in Within the claims of the present invention.

Claims (1)

1. single-phase optocoupler times flow pattern buck rectifier, including main circuit module and control circuit module two large divisions, is characterized in that：
（1）Described main circuit module includes two ac input end mouths, two direct current output ports and a main circuits, wherein Two ac input end mouths are respectively ac input end mouth ACH-in1With ac input end mouth ACH-in2, two direct current output ports Respectively direct current output port DCOUT+With direct current output port DCOUT-, further, main circuit is again by inductance L1, inductance L2, photoelectricity Coupler U1 output par, cs and photoelectrical coupler U2 output par, cs are constituted, ac input end mouth ACH-in1It is defeated with photoelectrical coupler U2 Go out the emitter stage of part, one end of inductance L2 to be connected, the other end and the direct current output port DC of inductance L2OUT+, inductance L1 one End is connected, the other end of inductance L1 and the emitter stage of photoelectrical coupler U1 output par, cs, ac input end mouth ACH-in2It is connected, light The colelctor electrode of electric coupler U1 output par, cs and colelctor electrode, the DC of direct current output port of photoelectrical coupler U2 output par, csOUT- It is connected；
（2）Described control circuit module includes two ac input end mouths and a control circuit, two of which exchange input Port is respectively ac input end mouth ACL-in1With ac input end mouth ACL-in2, further, control circuit is again by resistance R1, electricity Resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouth ACL-in1With resistance R1 One end be connected with one end of resistance R2, ac input end mouth ACL-in2Diode cathode with photoelectrical coupler U1 importations, The diode anode of photoelectrical coupler U2 importations is connected, the other end of resistance R1 and the two of photoelectrical coupler U1 importations Pole pipe anode is connected, and the other end of resistance R2 is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouth AC of main circuit moduleH-in1Connect with input bus Line1 is exchanged, its ac input end mouth ACH-in2It is connected with input bus Line2 is exchanged, the ac input end mouth AC of control circuit moduleL-in1With exchange input bus Line1 is connected, its ac input end mouth ACH-in2It is connected with input bus Line2 is exchanged, the direct current output port of main circuit module DCOUT+With direct current output port DCOUT-Between be used for external load RL.
CN201710144737.4A 2017-03-13 2017-03-13 Single-phase photocoupling current-doubling type voltage reduction rectifier Pending CN106655820A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101431297A (en) * 2008-11-26 2009-05-13 天宝电子（惠州）有限公司 Synchronous rectifier
US20130223117A1 (en) * 2012-02-28 2013-08-29 Nishil Thomas Koshy Power supply system
US20130242617A1 (en) * 2012-03-15 2013-09-19 Huaguang Zhang H-bridge micro inverter grid-connected device
CN203416188U (en) * 2013-09-09 2014-01-29 李志军 Low-voltage heavy-current digital type multi-phase synchronous rectification circuit
CN104994638A (en) * 2015-07-06 2015-10-21 湖南工业大学 Device for remotely adjusting brightness of LED lamp based on controllable rectifying waves
CN206620063U (en) * 2017-03-13 2017-11-07 湖南工业大学 Single-phase optocoupler times flow pattern buck rectifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101431297A (en) * 2008-11-26 2009-05-13 天宝电子（惠州）有限公司 Synchronous rectifier
US20130223117A1 (en) * 2012-02-28 2013-08-29 Nishil Thomas Koshy Power supply system
US20130242617A1 (en) * 2012-03-15 2013-09-19 Huaguang Zhang H-bridge micro inverter grid-connected device
CN203416188U (en) * 2013-09-09 2014-01-29 李志军 Low-voltage heavy-current digital type multi-phase synchronous rectification circuit
CN104994638A (en) * 2015-07-06 2015-10-21 湖南工业大学 Device for remotely adjusting brightness of LED lamp based on controllable rectifying waves
CN206620063U (en) * 2017-03-13 2017-11-07 湖南工业大学 Single-phase optocoupler times flow pattern buck rectifier

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HANGYE LIU: "A_new_parallel_ortho-rectification_algorithm_in_a_cluster_environment", 《2010 3RD INTERNATIONAL CONGRESS ON IMAGE AND SIGNAL PROCESSING (CISP2010)》 *
储健: "一种新型电子降压变压器的设计与仿真分析", 《计算机仿真》 *
朱叶: "基于UC3843的半波整流电路辅助电源设计", 《湖南工业大学学报》 *

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