CN103916028A - Circuit capable of increasing conduction angle of bridge rectifier - Google Patents
Circuit capable of increasing conduction angle of bridge rectifier Download PDFInfo
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- CN103916028A CN103916028A CN201310005848.9A CN201310005848A CN103916028A CN 103916028 A CN103916028 A CN 103916028A CN 201310005848 A CN201310005848 A CN 201310005848A CN 103916028 A CN103916028 A CN 103916028A
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Abstract
The invention relates to the technical field of rectifying circuits and capacitor filtering circuits in alternating current and direct current conversion, in particular to a circuit capable of increasing the conduction angle of a bridge rectifier. The circuit comprises a first rectifying circuit body and a second rectifying circuit body and is characterized in that a regulator circuit body is arranged between the first rectifying circuit body and the second rectifying circuit body, and the regulator circuit body is electrically connected with the first rectifying circuit body and the second rectifying circuit body respectively. According to the circuit, the regulator circuit body is additionally arranged between the two rectifying circuit bodies which are originally independent so as to prolong the conduction time of diodes in the corresponding original rectifying circuit bodies to increase the conduction angle and reduce impact currents, and therefore the service life of the diodes is prolonged. The circuit capable of increasing the conduction angle of the bridge rectifier prolongs the conduction time of diodes in the capacitor filtering circuits, and increases the conduction angle, thereby prolonging the service life of the diodes.
Description
Technical field
The present invention relates to rectification circuit and capacitor filter technical field in AC/DC transfer, relate in particular to a kind of circuit that improves the rectifier bridge stack angle of flow.
Background technology
Capacitor filter is simple in structure, easy to use, application is wider, but its ripple component is larger, although rectification circuit can become direct current by alternating current, the place that ask for something direct current is level and smooth is that inapplicable need add filter circuit, to reduce the ripple component in direct current after rectification.
The flip-flop of filtering output voltage has improved, and ripple component has reduced, this is all the electric discharge (energy is discharged to load) when charging (energy storage) cut-off in the time of diode current flow of the electric capacity that causes due to the energy storage effect of electric capacity, not only make the mean value of output voltage increase, after having added capacitor filtering, also become smoother, discharge slower.In capacitor filter, the conduction time of rectifier diode has shortened, and the angle of flow reduces, and discharge time constant is larger, and the angle of flow is less.Therefore, what rectifier diode flow through is a very large impulse current, unfavorable to the life-span of pipe.
Summary of the invention
For the shortcoming of prior art, the invention provides a kind of circuit that improves the rectifier bridge stack angle of flow, improve the conduction time of rectifier diode in capacitor filter, improve the angle of flow, thereby extend the life-span of diode.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of circuit that improves the rectifier bridge stack angle of flow, comprise the first rectification circuit, the second rectification circuit, it is characterized in that: between described the first rectification circuit and the second finishing circuit, Circuit tuning is set, Circuit tuning is electrically connected with the second rectification circuit with the first rectification circuit respectively.Circuit in this programme was independently increasing Circuit tuning between two-way rectification circuit originally, to increase the conduction time of diode in original rectification circuit, thereby increased the angle of flow, to reduce impulse current, thereby had extended the useful life of diode.
In such scheme, described the first rectification circuit is made up of four rectifier diode D1, D2, D3, D4, civil power is connected to the anode of diode D1 and the negative electrode of diode D2 after PFC reactor, the negative electrode of diode D1 is connected to the negative electrode of diode D3, the anodic bonding of diode D2 is to the anode of diode D4, the anode of diode D3 be connected with the negative electrode of diode D4 with after be connected to Circuit tuning, the negative electrode of diode D1 is connected to P2 mouth, the anodic bonding of diode D4 is to P3 mouth.
In such scheme, described the second rectification circuit is made up of four rectifier diode D11, D12, D13, D14 and a filter capacitor C1. and civil power is connected to the anode of diode D11 and the negative electrode of diode D12 after PFC reactor, the negative electrode of diode D11 is connected to the negative electrode of diode D13, the anodic bonding of diode D12 is to the anode of diode D14, and the anode of diode D13 is connected to the negative pole of civil power after being connected with the negative electrode of diode D14.
Preferably, described filter capacitor C1 is alminium electrolytic condenser, and the negative electrode of diode D11 is connected to the positive pole of filter capacitor C1, is connected to P0 mouth simultaneously, and the anodic bonding of diode D14, to the negative pole of filter capacitor C1, is connected to P1 mouth simultaneously.
In such scheme, described Circuit tuning is made up of switching diode D0, polarity free capacitor C0 and resistance R 0, wherein after resistance R 0 and polarity free capacitor C0 parallel connection, one end is connected to the anode of diode D3 in the first rectification circuit, be connected to the anode of switching diode D0 simultaneously, resistance R 0 and polarity free capacitor C0 parallel connection afterwards in addition one end be connected to the anode of diode D14 in the second rectification circuit, the negative electrode of switching diode D0 is connected to the negative electrode of diode D11 in the second rectification circuit.Wherein, described polarity free capacitor is nonpolarity thin-film capacitor.
Compared with prior art, the invention has the beneficial effects as follows:
The circuit that the present invention improves the rectifier bridge stack angle of flow was independently increasing Circuit tuning between two-way rectification circuit originally, to increase the conduction time of diode in original rectification circuit, thereby the increase angle of flow, to reduce impulse current, thereby has extended the useful life of diode.This circuit structure design is reasonable, practical, use and simplified control, and band overvoltage protection, has reduced the immediate current of boot-strap of isolating transformer, has protected components and parts, has extended its useful life.
Accompanying drawing explanation
Fig. 1 is existing rectifier bridge stack circuit frame schematic diagram;
Fig. 2 is the circuit frame schematic diagram that the present invention improves the rectifier bridge stack angle of flow;
Fig. 3 is the electrical block diagram that the present invention improves the rectifier bridge stack angle of flow.
Embodiment
Below in conjunction with Concrete facts mode, the present invention is further illustrated.
Improve as shown in Figure 1 to Figure 3 the embodiment of the circuit of the rectifier bridge stack angle of flow for the present invention, comprise the first rectification circuit, the second rectification circuit, it is characterized in that: between the first rectification circuit and the second finishing circuit, Circuit tuning is set, Circuit tuning is electrically connected with the second rectification circuit with the first rectification circuit respectively.
In the present embodiment, the first rectification circuit is made up of four rectifier diode D1, D2, D3, D4, civil power is connected to the anode of diode D1 and the negative electrode of diode D2 after PFC reactor, the negative electrode of diode D1 is connected to the negative electrode of diode D3, the anodic bonding of diode D2 is to the anode of diode D4, the anode of diode D3 be connected with the negative electrode of diode D4 with after be connected to Circuit tuning, the negative electrode of diode D1 is connected to P2 mouth, the anodic bonding of diode D4 is to P3 mouth.
In the present embodiment, the second rectification circuit is made up of four rectifier diode D11, D12, D13, D14 and a filter capacitor C1. and civil power is connected to the anode of diode D11 and the negative electrode of diode D12 after PFC reactor, the negative electrode of diode D11 is connected to the negative electrode of diode D13, the anodic bonding of diode D12 is to the anode of diode D14, and the anode of diode D13 is connected to the negative pole of civil power after being connected with the negative electrode of diode D14.Wherein, filter capacitor C1 is alminium electrolytic condenser, and the negative electrode of diode D11 is connected to the positive pole of filter capacitor C1, is connected to P0 mouth simultaneously, and the anodic bonding of diode D14, to the negative pole of filter capacitor C1, is connected to P1 mouth simultaneously.
In the present embodiment, Circuit tuning is made up of switching diode D0, polarity free capacitor C0 and resistance R 0, wherein after resistance R 0 and polarity free capacitor C0 parallel connection, one end is connected to the anode of diode D3 in the first rectification circuit, be connected to the anode of switching diode D0 simultaneously, resistance R 0 and polarity free capacitor C0 parallel connection afterwards in addition one end be connected to the anode of diode D14 in the second rectification circuit, the negative electrode of switching diode D0 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 was independently increasing Circuit tuning between two-way rectification circuit originally, to increase the conduction time of diode in original rectification circuit, thereby the increase angle of flow, to reduce impulse current, thereby has extended the useful life of diode.This circuit structure design is reasonable, practical, use and simplified control, and band overvoltage protection, has reduced the immediate current of boot-strap of isolating transformer, has protected components and parts, has extended its useful life.
Claims (6)
1. one kind is improved the circuit of the rectifier bridge stack angle of flow, comprise the first rectification circuit, the second rectification circuit, it is characterized in that: between described the first rectification circuit and the second finishing circuit, Circuit tuning is set, Circuit tuning is electrically connected with the second rectification circuit with the first rectification circuit respectively.
2. the circuit of the raising rectifier bridge stack angle of flow according to claim 1, it is characterized in that: described the first rectification circuit is made up of four rectifier diode D1, D2, D3, D4, civil power is connected to the anode of diode D1 and the negative electrode of diode D2 after PFC reactor, the negative electrode of diode D1 is connected to the negative electrode of diode D3, the anodic bonding of diode D2 is to the anode of diode D4, the anode of diode D3 be connected with the negative electrode of diode D4 with after be connected to Circuit tuning, the negative electrode of diode D1 is connected to P2 mouth, and the anodic bonding of diode D4 is to P3 mouth.
3. the circuit of the raising rectifier bridge stack angle of flow according to claim 1, it is characterized in that: described the second rectification circuit is made up of four rectifier diode D11, D12, D13, D14 and a filter capacitor C1. civil power is connected to the anode of diode D11 and the negative electrode of diode D12 after PFC reactor, the negative electrode of diode D11 is connected to the negative electrode of diode D13, the anodic bonding of diode D12 is to the anode of diode D14, and the anode of diode D13 is connected to the negative pole of civil power after being connected with the negative electrode of diode D14.
4. the circuit of the raising rectifier bridge stack angle of flow according to claim 3, it is characterized in that: described filter capacitor C1 is alminium electrolytic condenser, the negative electrode of diode D11 is connected to the positive pole of filter capacitor C1, be connected to P0 mouth simultaneously, the anodic bonding of diode D14, to the negative pole of filter capacitor C1, is connected to P1 mouth simultaneously.
5. according to the circuit of the raising rectifier bridge stack angle of flow described in claim 1 to 4 any one, it is characterized in that: described Circuit tuning is made up of switching diode D0, polarity free capacitor C0 and resistance R 0, wherein after resistance R 0 and polarity free capacitor C0 parallel connection, one end is connected to the anode of diode D3 in the first rectification circuit, be connected to the anode of switching diode D0 simultaneously, resistance R 0 and polarity free capacitor C0 parallel connection afterwards in addition one end be connected to the anode of diode D14 in the second rectification circuit, the negative electrode of switching diode D0 is connected to the negative electrode of diode D11 in the second rectification circuit.
6. the circuit of the raising rectifier bridge stack angle of flow according to claim 5, is characterized in that: described 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 |
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| CN103916028A true CN103916028A (en) | 2014-07-09 |
| CN103916028B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452115A (en) * | 2016-12-12 | 2017-02-22 | 梁正 | Double-bridge rectifying circuit capable of reducing power consumption and harmonic pollution |
Citations (5)
| 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 |
| 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 |
-
2013
- 2013-01-08 CN CN201310005848.9A patent/CN103916028B/en active Active
Patent Citations (5)
| 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 |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452115A (en) * | 2016-12-12 | 2017-02-22 | 梁正 | Double-bridge rectifying circuit capable of reducing power consumption and harmonic pollution |
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| Publication number | Publication date |
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| CN103916028B (en) | 2017-10-10 |
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