CN103916028B - A kind of circuit for improving the rectifier bridge stack angle of flow - Google Patents
A kind of circuit for improving the rectifier bridge stack angle of flow Download PDFInfo
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- CN103916028B CN103916028B CN201310005848.9A CN201310005848A CN103916028B CN 103916028 B CN103916028 B CN 103916028B CN 201310005848 A CN201310005848 A CN 201310005848A CN 103916028 B CN103916028 B CN 103916028B
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Abstract
The present invention relates to rectification circuit in AC/DC transfer and capacitor filter technical field, more particularly to a kind of circuit for improving the rectifier bridge stack angle of flow, including the first rectification circuit, the second rectification circuit, it is characterised in that：Adjustment circuit is set between first rectification circuit and the second finishing circuit, and adjustment circuit is electrically connected with the first rectification circuit with the second rectification circuit respectively.Circuit in this programme adds adjustment circuit between original independent two-way rectification circuit, to increase the conduction time of diode in original rectification circuit, so as to increase the angle of flow, to reduce dash current, so as to extend the service life of diode.The circuit of the raising rectifier bridge stack angle of flow, improves the conduction time of commutation diode in capacitor filter, the angle of flow is improved, so as to extend the life-span of diode.
Description
Technical field
Carried the present invention relates to rectification circuit in AC/DC transfer and capacitor filter technical field, more particularly to one kind
The circuit of the high rectifier bridge stack angle of flow.
Background technology
Capacitor filter is simple in construction, easy to use, using relatively wide, and its ripple component is larger, although rectification circuit
Alternating current can be become direct current, some require that the smooth place of direct current is that inapplicable need add filter circuit, to reduce
Ripple component after rectification in direct current.
The flip-flop of filtering output voltage is improved, and ripple component is reduced, and this is all due to the energy storage work of electric capacity
Charged when (energy storage) ends and discharged (energy is released to load) in diode current flow with the electric capacity caused, not only make output electricity
The average value increase of pressure, has added after capacitor filtering, has also become smoother, discharged slower.It is whole in capacitor filter
The conduction time of stream diode is shortened, i.e., the angle of flow reduces, and discharge time constant is bigger, and the angle of flow is smaller.Therefore, it is whole
What stream diode flowed through is a very big dash current, unfavorable to the life-span of pipe.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of circuit for improving the rectifier bridge stack angle of flow, electric capacity is improved
The conduction time of commutation diode in filter circuit, improves the angle of flow, so as to extend the life-span of diode.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of circuit for improving the rectifier bridge stack angle of flow, including the first rectification circuit, the second rectification circuit, its feature exist
In：Adjustment circuit is set between first rectification circuit and the second finishing circuit, adjustment circuit respectively with the first rectification circuit
Electrically connected with the second rectification circuit.Circuit in this programme adds adjustment electricity between original independent two-way rectification circuit
Road, to increase the conduction time of diode in original rectification circuit, so as to increase the angle of flow, to reduce dash current, so as to prolong
The service life of diode is grown.
In such scheme, first rectification circuit is made up of four commutation diodes D1, D2, D3, D4, and civil power is through PFC
Diode D1 anode and diode D2 negative electrode are connected to after reactor, diode D1 negative electrode is connected to diode D3 the moon
Pole, diode D2 anode is connected to diode D4 anode, and diode D3 anode and diode D4 negative electrode are connected with after
Adjustment circuit is connected to, diode D1 negative electrode is connected to P2 mouthfuls, and diode D4 anode is connected to P3 mouthfuls.
In such scheme, second rectification circuit is filtered by four commutation diodes D11, D12, D13, D14 and one
Electric capacity C1 composition civil powers are connected to diode D11 anode and diode D12 negative electrode, diode D11 after PFC reactors
Negative electrode be connected to diode D13 negative electrode, diode D12 anode is connected to diode D14 anode, diode D13's
Anode is connected to the negative pole of civil power after being connected with diode D14 negative electrode.
Preferably, the filter capacitor C1 is alminium electrolytic condenser, and diode D11 negative electrode is being connected to filter capacitor C1 just
Pole, while being connected to P0 mouthfuls, diode D14 anode is connected to filter capacitor C1 negative pole, while being connected to P1 mouthfuls.
In such scheme, the adjustment circuit is made up of switching diode D0, polarity free capacitor C0 and resistance R0, wherein electricity
One end is connected to the anode of diode D3 in the first rectification circuit after resistance R0 and polarity free capacitor C0 is in parallel, while being connected to switch
Other end is connected to diode in the second rectification circuit after diode D0 anode, resistance R0 and polarity free capacitor C0 are in parallel
D14 anode, switching diode D0 negative electrode is connected to the negative electrode of diode D11 in the second rectification circuit.Wherein, it is described electrodeless
Property electric capacity be nonpolarity thin-film capacitor.
Compared with prior art, the beneficial effects of the invention are as follows：
The circuit that the present invention improves the rectifier bridge stack angle of flow adds adjustment between original independent two-way rectification circuit
Circuit, to increase the conduction time of diode in original rectification circuit, so that increase the angle of flow, to reduce dash current, so that
Extend the service life of diode.The circuit structure design is reasonable, practical, use and operate simplification, and with overvoltage
Protection, reduces the immediate current of boot-strap of isolating transformer, protects component, extend its service life.
Brief description of the drawings
Fig. 1 is existing rectifier bridge stack circuit frame schematic diagram；
Fig. 2 improves the circuit frame schematic diagram of the rectifier bridge stack angle of flow for the present invention；
Fig. 3 improves the electrical block diagram of the rectifier bridge stack angle of flow for the present invention.
Embodiment
With reference to Concrete facts mode, the present invention is further illustrated.
The embodiment of the circuit of the rectifier bridge stack angle of flow, including the first rectified current are improved for the present invention as shown in Figure 1 to Figure 3
Road, the second rectification circuit, it is characterised in that：Adjustment circuit, adjustment electricity are set between the first rectification circuit and the second finishing circuit
Road is electrically connected with the first rectification circuit with the second rectification circuit respectively.
In the present embodiment, the first rectification circuit is made up of four commutation diodes D1, D2, D3, D4, and civil power is through PFC reactance
Diode D1 anode and diode D2 negative electrode are connected to after device, diode D1 negative electrode is connected to diode D3 negative electrode,
Diode D2 anode is connected to diode D4 anode, and diode D3 anode and diode D4 negative electrode are connected to be connected with after
To adjustment circuit, diode D1 negative electrode is connected to P2 mouthfuls, and diode D4 anode is connected to P3 mouthfuls.
In the present embodiment, the second rectification circuit is by four commutation diodes D11, D12, D13, D14 and a filter capacitor
C1 composition civil powers are connected to diode D11 anode and diode D12 negative electrode, diode D11 the moon after PFC reactors
Pole is connected to diode D13 negative electrode, and diode D12 anode is connected to diode D14 anode, diode D13 anode
The negative pole of civil power is connected to after being connected with diode D14 negative electrode.Wherein, filter capacitor C1 is alminium electrolytic condenser, diode D11
Negative electrode be connected to filter capacitor C1 positive pole, while being connected to P0 mouthfuls, diode D14 anode is connected to filter capacitor C1's
Negative pole, while being connected to P1 mouthfuls.
In the present embodiment, adjustment circuit is made up of switching diode D0, polarity free capacitor C0 and resistance R0, wherein resistance R0
The anode of diode D3 in the first rectification circuit is connected to one end after polarity free capacitor C0 parallel connections, while being connected to two poles of switch
Other end is connected to diode D14 in the second rectification circuit after pipe D0 anode, resistance R0 and polarity free capacitor C0 are in parallel
Anode, switching diode D0 negative electrode is connected to the negative electrode of diode D11 in the second rectification circuit.Wherein, polarity free capacitor is
Nonpolarity thin-film capacitor.
The circuit that the present invention improves the rectifier bridge stack angle of flow adds adjustment between original independent two-way rectification circuit
Circuit, to increase the conduction time of diode in original rectification circuit, so that increase the angle of flow, to reduce dash current, so that
Extend the service life of diode.The circuit structure design is reasonable, practical, use and operate simplification, and with overvoltage
Protection, reduces the immediate current of boot-strap of isolating transformer, protects component, extend its service life.
Claims (2)
1. a kind of circuit for improving the rectifier bridge stack angle of flow, including the first rectification circuit, the second rectification circuit, it is characterised in that：
Adjustment circuit is set between first rectification circuit and the second rectification circuit, adjustment circuit respectively with the first rectification circuit and
Two rectification circuits are electrically connected；
The adjustment circuit is made up of switching diode D0, polarity free capacitor C0 and resistance R0, wherein resistance R0 and nonpolarity electricity
Hold one end after C0 parallel connections and be connected to the anode of diode D3 in the first rectification circuit, while being connected to switching diode D0 sun
Other end is connected to the anode of diode D14 in the second rectification circuit, switch after pole, resistance R0 and polarity free capacitor C0 are in parallel
Diode D0 negative electrode is connected to the negative electrode of diode D11 in the second rectification circuit；
First rectification circuit is made up of four commutation diodes D1, D2, D3, D4, and civil power positive pole is connected after PFC reactors
To diode D1 anode and diode D2 negative electrode, diode D1 negative electrode is connected to diode D3 negative electrode, diode D2
Anode be connected to diode D4 anode, diode D3 anode is connected to two poles of switch after being connected with diode D4 negative electrode
One end of pipe D0 anode, resistance R0 and polarity free capacitor C0, diode D1 negative electrode is connected to P2 mouthfuls, diode D4 anode
It is connected to P3 mouthfuls；
Second rectification circuit constitutes civil powers by four commutation diodes D11, D12, D13, D14 and a filter capacitor C1
Positive pole is connected to diode D11 anode and diode D12 negative electrode after PFC reactors, and diode D11 negative electrode is connected to
Diode D13 negative electrode, diode D12 anode is connected to diode D14 anode, diode D13 anode and diode
D14 negative electrode is connected to the negative pole of civil power after being connected；
The filter capacitor C1 is alminium electrolytic condenser, and diode D11 negative electrode is connected to filter capacitor C1 positive pole, is connected simultaneously
To P0 mouthfuls, diode D14 anode is connected to filter capacitor C1 negative pole, while being connected to P1 mouthfuls.
2. the circuit according to claim 1 for improving the rectifier bridge stack angle of flow, it is characterised in that：The polarity free capacitor is
Nonpolarity thin-film capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310005848.9A CN103916028B (en) | 2013-01-08 | 2013-01-08 | A kind of circuit for improving the rectifier bridge stack angle of flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310005848.9A CN103916028B (en) | 2013-01-08 | 2013-01-08 | A kind of circuit for improving the rectifier bridge stack angle of flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103916028A CN103916028A (en) | 2014-07-09 |
| CN103916028B true CN103916028B (en) | 2017-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310005848.9A Active CN103916028B (en) | 2013-01-08 | 2013-01-08 | A kind of circuit for improving the rectifier bridge stack angle of flow |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106452115A (en) * | 2016-12-12 | 2017-02-22 | 梁正 | Double-bridge rectifying circuit capable of reducing power consumption and harmonic pollution |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068099A (en) * | 2007-06-12 | 2007-11-07 | 山东山大奥太电气有限公司 | Three-phase rectification circuit of low-harmonic wave input current capacitive filtering |
| CN202068324U (en) * | 2011-04-27 | 2011-12-07 | 深圳市三维自动化工程有限公司 | Passive power factor correction (PFC) circuit |
| CN102780409A (en) * | 2012-07-20 | 2012-11-14 | 上海交通大学 | Unity-power-factor buck-boost circuit |
| CN203027158U (en) * | 2013-01-08 | 2013-06-26 | 海信科龙电器股份有限公司 | Circuit for improving rectifier bridge pile conduction angle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002095260A (en) * | 2000-09-12 | 2002-03-29 | Fuji Electric Systems Co Ltd | Harmonics current suppressing power converter |
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2013
- 2013-01-08 CN CN201310005848.9A patent/CN103916028B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068099A (en) * | 2007-06-12 | 2007-11-07 | 山东山大奥太电气有限公司 | Three-phase rectification circuit of low-harmonic wave input current capacitive filtering |
| CN202068324U (en) * | 2011-04-27 | 2011-12-07 | 深圳市三维自动化工程有限公司 | Passive power factor correction (PFC) circuit |
| CN102780409A (en) * | 2012-07-20 | 2012-11-14 | 上海交通大学 | Unity-power-factor buck-boost circuit |
| CN203027158U (en) * | 2013-01-08 | 2013-06-26 | 海信科龙电器股份有限公司 | Circuit for improving rectifier bridge pile conduction angle |
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| CN103916028A (en) | 2014-07-09 |
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