CN206620063U - Single-phase optocoupler times flow pattern buck rectifier - Google Patents
Single-phase optocoupler times flow pattern buck rectifier Download PDFInfo
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- CN206620063U CN206620063U CN201720236145.0U CN201720236145U CN206620063U CN 206620063 U CN206620063 U CN 206620063U CN 201720236145 U CN201720236145 U CN 201720236145U CN 206620063 U CN206620063 U CN 206620063U
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Abstract
The utility model discloses a kind of single-phase optocoupler times flow pattern buck rectifier, including main circuit module and control circuit module two large divisions, described main circuit module includes two ac input ends mouthful, two direct current output ports and a main circuit, and described control circuit module includes two ac input ends mouthful and a control circuit.The utility model, which has, designs simple, rational in infrastructure, structure conveniently, characteristic with low cost, compared with traditional current doubler rectifier, not only step-down transformer need not be increased in its input to be matched therewith, and in terms of its alternating current input power supplying matching, conventional square wave is not only suitable for, is applied to the height of the other forms such as sine wave, triangular wave, sawtooth waveforms again, neutralizes low-frequency ac input power.
Description
Technical field
The utility model is related to a times flow pattern rectifier, more specifically, and it is whole to be that one kind is related to the decompression of single-phase optocoupler times flow pattern
Flow device.
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 be more using an output inductor, structure slightly complicated.But this electricity
The working frequency and conveying electric current of sense are the half of inductance used in full-wave rectifying circuit, therefore can be made smaller, also beneficial to scattered
Heat, additionally it is possible to reduce and improve the ripple of output voltage.But there is also person, some problems need into one traditional current doubler rectifier
Step is solved：
（1）Traditional current doubler rectifier generally will increase step-down transformer to realize that step-down rectifier is exported in its input
Matched therewith, thus can produce higher cost；
（2）Traditional current doubler rectifier is suitable only for high-frequency rectification circuit, its ac input end need to provide symmetrical high frequency just,
Negative square wave power, 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 utility model aims to provide a kind of single-phase optocoupler times flow pattern buck rectifier, can overcome tradition
The defect that current doubler rectifier is present.
Traditional current doubler rectifier will generally become to realize the function that step-down rectifier is exported in ac input end increase decompression
Depressor is matched therewith, and the primary conductive pathway of every half of work period is brought out from the one of the secondary side of step-down transformer
Hair, through inductance, output loading, one of diode, returns the other end of the secondary side of step-down transformer, now conforms to the principle of simplicity
From the point of view of in the quantitative relationship of change, output voltage subtracts the pressure on inductance equal to the AC-input voltage of the secondary side of step-down transformer
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 small, if ignoring the pressure drop of diode, it is believed that it is secondary that the main output voltage of every half of work period is equal to step-down transformer
The AC-input voltage of side subtracts 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 subtracts the pressure drop on inductance equal to AC-input voltage,
The pressure drop between photoelectrical coupler output par, c port is subtracted again, can also realize the step-down rectifier output of current doubler rectifier.
In order to realize the purpose of foregoing invention, the utility model specifically provides single-phase optocoupler times flow pattern buck rectifier technology
Scheme is：Including main circuit module and control circuit module two large divisions.
（1）Described main circuit module includes two ac input ends mouthful, two direct current output ports and a main circuit,
Two of which ac input end mouthful is respectively ac input end mouthful ACH-in1With ac input end mouthful 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 composition, ac input end mouthful ACH-in1With photoelectrical coupler
The emitter stage of U2 output par, cs, inductance L2 one end are connected, inductance the L2 other end and direct current output port DCOUT+, inductance L1
One end be connected, the inductance L1 other end and the emitter stage of photoelectrical coupler U1 output par, cs, ac input end mouthful 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 ends mouthful and a control circuit, two of which exchange
Input port is respectively ac input end mouthful ACL-in1With ac input end mouthful ACL-in2, further, control circuit is again by resistance
R1, resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouthful ACL-in1With
Resistance R1 one end is connected with resistance R2 one end, ac input end mouthful ACL-in2With two poles of photoelectrical coupler U1 importations
Tube cathode, the diode anode of photoelectrical coupler U2 importations are connected, the resistance R1 other end and photoelectrical coupler U1 input
Partial diode anode is connected, and the resistance R2 other end is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouthful AC of main circuit moduleH-in1Connect with exchanging input bus Line1, its ac input end
Mouth ACH-in2It is connected with exchanging input bus Line2, the ac input end mouthful AC of control circuit moduleL-in1With exchanging input bus
Line1 is connected, its ac input end mouthful ACH-in2It is connected with exchanging input bus Line2, the direct current output port of main circuit module
DCOUT+With direct current output port DCOUT-Between be used for external load RL；
（4）The cycle of operating voltage between exchange input bus Line1 and exchange input bus Line2 is divided into positive half cycle
Phase and negative half-cycle two large divisions：
When being operated in positive half period, described control circuit module only has a guiding path, described main circuit mould
Block has two guiding paths, and the guiding path of wherein control circuit module is through exchanging input bus Line1 until exchange is inputted
Hold 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 through exchanging input bus Line1 until ac input end ACH-in1、
Inductance L2, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U1 output par, cs and friendship
Flow input ACH-in2, then to exchange input bus Line2；The Article 2 guiding path of main circuit module, mainly by inductance L1
After previous negative half-cycle energy storage, the continuous current circuit formed in positive half period, i.e., from inductance L1, by direct current output
Port DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U1 output par, cs, inductance L1 is returned；
When being operated in negative half-cycle, described control circuit module also has a guiding path, described main circuit mould
Block also has two guiding paths, and the guiding path of wherein control circuit module is through exchanging input bus Line2 until exchanging defeated
Enter to hold 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 through exchanging input bus Line2 until ac input end ACH-in2、
Inductance L1, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U2 output par, cs and friendship
Flow input ACH-in1, then to exchange input bus Line1；The Article 2 guiding path of main circuit module, mainly by inductance L2
After previous positive half period energy storage, the continuous current circuit formed in negative half-cycle, i.e., from inductance L2, by direct current output
Port DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U2 output par, cs, inductance L2 is returned；Separately
Outside, positive half period or negative half-cycle, direct current output port DC are either operated inOUT+Voltage be higher than direct current output port
DCOUT-Voltage, during which all benefit from the effect of inductance L1 and inductance L2 energy storage and afterflow again, not only realize single-phase rectifier work(
Can, and realize a times stream rectification function.
The beneficial effects of the utility model are to provide a kind of single-phase optocoupler times flow pattern buck rectifier, with design it is simple,
The rational in infrastructure, characteristic that structure is convenient, with low cost, compared with traditional current doubler rectifier, not only in its input without increase
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, is applicable again
In high, the neutralization low-frequency ac input power of the other forms such as sine wave, triangular wave, sawtooth waveforms.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme, embodiment or technical scheme will be retouched below
The accompanying drawing used required in stating is briefly described, it should be apparent that, drawings in the following description are only of the present utility model
The explanation of more typical example structure composition or circuit diagram, for those skilled in the art, is not paying creative work
On the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of canonical schema of traditional current doubler rectifier.
Fig. 2 is a kind of single-phase canonical schema of 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.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described to the utility model technology composition, technical scheme and embodiment, shows
So, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on this practicality
Embodiment in new, other implementations that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of the utility model protection.
The utility model is further illustrated in conjunction with the drawings and specific embodiments.
As shown in Figure 1, it is a kind of canonical schema of traditional current doubler rectifier, traditional current doubler rectifier is to realize decompression
The function of rectification output, generally will therewith be matched in ac input end increase step-down transformer, every half of work period
Primary conductive pathway is one end of the secondary side from step-down transformer, through inductance, output loading, one of those two pole
Pipe, returns the other end of the secondary side of step-down transformer, now from simplified quantitative relationship, and output voltage is equal to drop
The AC-input voltage of the secondary side of pressure transformer subtracts the pressure drop on inductance and the pressure drop of 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 AC-input voltage that the main output voltage of individual work period is equal to step-down transformer secondary side subtracts pressure drop on inductance.In addition
There is a continuous current circuit every half of work period, additionally it is possible to reduces and improves the ripple of output voltage.
As shown in Figure 2, be a kind of single-phase canonical schema of 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 ends mouthful, two direct current output ports and a main circuit,
Two of which ac input end mouthful is respectively ac input end mouthful ACH-in1With ac input end mouthful 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 composition, ac input end mouthful ACH-in1With photoelectrical coupler
The emitter stage of U2 output par, cs, inductance L2 one end are connected, inductance the L2 other end and direct current output port DCOUT+, inductance L1
One end be connected, the inductance L1 other end and the emitter stage of photoelectrical coupler U1 output par, cs, ac input end mouthful 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 ends mouthful and a control circuit, two of which exchange
Input port is respectively ac input end mouthful ACL-in1With ac input end mouthful ACL-in2, further, control circuit is again by resistance
R1, resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouthful ACL-in1With
Resistance R1 one end is connected with resistance R2 one end, ac input end mouthful ACL-in2With two poles of photoelectrical coupler U1 importations
Tube cathode, the diode anode of photoelectrical coupler U2 importations are connected, the resistance R1 other end and photoelectrical coupler U1 input
Partial diode anode is connected, and the resistance R2 other end is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouthful AC of main circuit moduleH-in1Connect with exchanging input bus Line1, its ac input end
Mouth ACH-in2It is connected with exchanging input bus Line2, the ac input end mouthful AC of control circuit moduleL-in1With exchanging input bus
Line1 is connected, its ac input end mouthful ACH-in2It is connected with exchanging input bus Line2, 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 through exchanging input bus Line1 until ac input end ACL-in1, electricity
Hinder 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 through exchanging input bus Line1 until ac input end ACH-in1、
Inductance L2, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U1 output par, cs and friendship
Flow input ACH-in2, then to exchange input bus Line2；The Article 2 guiding path of main circuit module, mainly by inductance L1
After previous negative half-cycle energy storage, the continuous current circuit formed in positive half period, i.e., from inductance L1, by direct current output
Port 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 through exchanging 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 through exchanging input bus Line2 until ac input end ACH-in2、
Inductance L1, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U2 output par, cs and friendship
Flow input ACH-in1, then to exchange input bus Line1；The Article 2 guiding path of main circuit module, mainly by inductance L2
After previous positive half period energy storage, the continuous current circuit formed in negative half-cycle, i.e., from inductance L2, by direct current output
Port DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U2 output par, cs, inductance L2 is returned；Separately
Outside, positive half period or negative half-cycle, direct current output port DC are either operated inOUT+Voltage be higher than direct current output port
DCOUT-Voltage, during which all benefit from the effect of inductance L1 and inductance L2 energy storage and afterflow again, not only realize single-phase rectifier work(
Can, and realize a times stream rectification function.
It is described above, only it is preferred embodiment of the present utility model, not makees any formal to the utility model
Limitation.If various changes and modifications are carried out to the utility model embodiment, but still in spirit of the present utility model and original
Within then, it should be included within claims of the present utility model.
Claims (1)
1. single-phase optocoupler times flow pattern buck rectifier, including main circuit module and control circuit module two large divisions, it is characterized in that：
（1）Described main circuit module includes two ac input ends mouthful, two direct current output ports and a main circuit, wherein
Two ac input ends mouthful are respectively ac input end mouthful ACH-in1With ac input end mouthful 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 composition, ac input end mouthful ACH-in1It is defeated with photoelectrical coupler U2
Go out the emitter stage of part, inductance L2 one end to be connected, inductance the L2 other end and direct current output port DCOUT+, inductance L1 one
End is connected, the inductance L1 other end and the emitter stage of photoelectrical coupler U1 output par, cs, ac input end mouthful ACH-in2It is connected, light
The colelctor electrode of electric coupler U1 output par, cs and the colelctor electrode of photoelectrical coupler U2 output par, cs, the DC of direct current output portOUT-
It is connected；
（2）Described control circuit module includes two ac input ends mouthful and a control circuit, two of which exchange input
Port is respectively ac input end mouthful ACL-in1With ac input end mouthful ACL-in2, further, control circuit is again by resistance R1, electricity
Hinder R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouthful ACL-in1With resistance R1
One end be connected with resistance R2 one end, ac input end mouthful ACL-in2Diode cathode with photoelectrical coupler U1 importations,
The diode anode of photoelectrical coupler U2 importations is connected, the resistance R1 other end and the two of photoelectrical coupler U1 importations
Pole pipe anode is connected, and the resistance R2 other end is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouthful AC of main circuit moduleH-in1Connect with exchanging input bus Line1, its ac input end mouthful
ACH-in2It is connected with exchanging input bus Line2, the ac input end mouthful AC of control circuit moduleL-in1With exchanging input bus
Line1 is connected, its ac input end mouthful ACH-in2It is connected with exchanging input bus Line2, the direct current output port of main circuit module
DCOUT+With direct current output port DCOUT-Between be used for external load RL.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720236145.0U CN206620063U (en) | 2017-03-13 | 2017-03-13 | Single-phase optocoupler times flow pattern buck rectifier |
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| CN201720236145.0U CN206620063U (en) | 2017-03-13 | 2017-03-13 | Single-phase optocoupler times flow pattern buck rectifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655820A (en) * | 2017-03-13 | 2017-05-10 | 湖南工业大学 | Single-phase photocoupling current-doubling type voltage reduction rectifier |
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2017
- 2017-03-13 CN CN201720236145.0U patent/CN206620063U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655820A (en) * | 2017-03-13 | 2017-05-10 | 湖南工业大学 | Single-phase photocoupling current-doubling type voltage reduction rectifier |
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Granted publication date: 20171107 Termination date: 20180313 |