CN107171575A - Rectification circuit - Google Patents
Rectification circuit Download PDFInfo
- Publication number
- CN107171575A CN107171575A CN201710465233.2A CN201710465233A CN107171575A CN 107171575 A CN107171575 A CN 107171575A CN 201710465233 A CN201710465233 A CN 201710465233A CN 107171575 A CN107171575 A CN 107171575A
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- CN
- China
- Prior art keywords
- phase
- sinusoidal voltage
- wave
- tunnel
- rectifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/068—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode mounted on a transformer
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
Abstract
The invention discloses a kind of rectification circuit, comprising transformer (1), phase shifter (2), rectifier (3), stacking network (4) and load (5), transformer is used to export the all-wave sinusoidal voltage that the all-wave sinusoidal voltage change of input turns to two tunnel same-phases to phase shifter；Phase shifter is used to export the all-wave sinusoidal voltage that the all-wave sinusoidal voltage change of two tunnel same-phases of input turns to two tunnel outs of phase to rectifier；Rectifier is used to export the half-wave sinusoidal voltage that the all-wave sinusoidal voltage change of two tunnel outs of phase of input turns to four tunnel outs of phase to stacking network；Stacking network is used for the half-wave sinusoidal voltage of four tunnel outs of phase is after-applied in load according to the superposition of corresponding phase difference.The present invention cuts AC compounent step-down after wave voltage superposition using the poor rectification of equiphase, and the characteristics of frequency is uprised is combined with rear class filtering circuit, reaches the purpose for suppressing Switching Power Supply output stage EMI signal.
Description
Technical field
The present invention relates to a kind of rectification circuit, the interference of the EMI signal for suppressing Switching Power Supply generation.
Background technology
Switching Power Supply is one of the largest source of EMI signal interference of the electronic equipment of all use Switching Power Supplies.Switch
The EMI interference signals of power supply mostly come from the fundamental frequency harmonic signal of the non-linear produced signal of inverter and rectifier,
And this class interference signal is big, frequency is low, be difficult to be filtered out completely by electromagnetic interface filter.Wherein, Switching Power Supply rectifier is exported
Electric current fundamental component and DC component sizableness, and frequency is relatively low, it is necessary to expending great space is filtered design, and
And in High-current output, hardly result in the dc source for filtering out oscillator frequency completely.Switching Power Supply is used in the overwhelming majority
Electronic system in, EMI that Switching Power Supply is internally and externally produced interference in itself is still the largest source of electronic system EMI interference
One of.
The content of the invention
The interference that EMI signal is set to electronics is produced in order to eliminate Switching Power Supply, goal of the invention of the invention is to provide
A kind of rectification circuit, the cardinal principle of the rectification circuit is by increasing the output rectified signal of equiphase difference, making out of phase
Coupling AC signal after rectifies equiphase difference be superimposed on power source loads, reach elimination fundamental frequency and low-order harmonic
Disturb and suppress higher hamonic wave interference.
The goal of the invention of the present invention is achieved through the following technical solutions：
A kind of rectification circuit, includes transformer 1, phase shifter 2, rectifier 3, stacking network 4 and load 5；
Transformer is used to export the all-wave sinusoidal voltage that the all-wave sinusoidal voltage change of input turns to two tunnel same-phases to shifting
Phase device；
Phase shifter is used to the all-wave sinusoidal voltage of two tunnel same-phases of input become to the all-wave for turning to two tunnel outs of phase just
String voltage output is to rectifier；
Rectifier is used to becoming the all-wave sinusoidal voltage of two tunnel outs of phase of input into the half-wave for turning to four tunnel outs of phase
Sinusoidal voltage is exported to stacking network；
Stacking network be used for by the half-wave sinusoidal voltage of four tunnel outs of phase according to corresponding phase difference superposition it is after-applied
In load.
Preferably, transformer is the transformer with the voltage output level such as two.
Preferably, phase shifter is made up of a shift capacitor and a phase shift inductance, and shift capacitor is inputted to transformer
All-wave sinusoidal voltage carries out phase place change all the way, and another road all-wave sinusoidal voltage that phase shift inductance is inputted to transformer enters line phase
Change.
Preferably, rectifier includes two bridge rectifiers, and first bridge rectifier exports two phase differences and be
180 ° of half-wave sinusoidal voltage, second bridge rectifier exports the two and half of two and first bridge rectifier output
The phase difference of ripple sinusoidal voltage is 90 ° of half-wave sinusoidal voltage.
Preferably, stacking network is two wires, wherein a wire is by the defeated all the way of above-mentioned two bridge rectifier
Go out the one end of load that is added to, another road of above-mentioned two bridge rectifier is exported the another of load that be added to by another wire
One end.
The beneficial effects of the present invention are：AC compounent step-down, frequency after wave voltage superposition are cut using the poor rectification of equiphase
The characteristics of uprising, is combined with rear class filtering circuit, reaches the purpose for suppressing Switching Power Supply output stage EMI signal.
Brief description of the drawings
Fig. 1 is the suggested rectification circuit of embodiment 1.
Fig. 2 is the output voltage of embodiment 1.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, embodiment is a rectification circuit, including：Transformer 1, phase shifter 2, rectifier 3, stacking network 4
With load 5.
Transformer 1, which is one, the transformer of the voltage output level such as two, for the all-wave sinusoidal voltage of input to be changed
All-wave sinusoidal voltage for two tunnel same-phases is exported to phase shifter.Inversion of the all-wave sinusoidal voltage of input in Switching Power Supply
Device.In the present embodiment, plurality of voltages identical exports winding in the output stage of the same voltage of transformer.
Phase shifter 2 is made up of a shift capacitor and a phase shift inductance, for by the complete of two tunnel same-phases of input
The all-wave sinusoidal voltage that the change of ripple sinusoidal voltage turns to two tunnel outs of phase is exported to rectifier, and its effect exports transformer
The phase signals such as equipressure become isobaric polyphase signa.
Rectifier 3 is made up of two bridge rectifiers, wherein first bridge rectifier is exporting an all-wave just
String voltage is to the superposition that the phase difference of stacking network, i.e., two is 180 ° of half-wave sinusoidal voltages, second bridge rectifier output
One differs the all-wave sinusoidal voltage for 90 ° with the all-wave sinusoidal voltage that first bridge rectifier is exported to stacking network,
Two-way bridge rectifier exports the superposition that the road half-wave sinusoidal voltages of 90 ° tetra- are respectively differed equivalent to phase.
Stacking network is the connection combination of one group of wire, for by the half-wave sinusoidal voltage of four tunnel outs of phase according to corresponding
Phase difference superposition is after-applied in load.The output all the way of above-mentioned two bridge rectifier is added to negative by wherein one wire
One end of load, another wire exports another road of above-mentioned two bridge rectifier the other end for the load that is added to.It is described
Phase difference be multiple signals phase difference and phase shifter output signal road in phase difference between multichannel sinusoidal voltage, the present embodiment
Line is a phase cycling after being multiplied.
Load the late-class circuit load driven for Switching Power Supply.
As shown in Fig. 2 the output voltage of embodiment 1 is the superposition for the full wave rectified signal that two-way phase difference is 90 °, its is straight
Flow component is 2 times of full wave rectified signal, and its AC compounent is 0.4 times of full wave rectified signal, and the frequency of its AC compounent is
2 times of full wave rectified signal.In the case of identical direct voltage output, four superimposed output rectification circuits of embodiment 1
AC compounent is the 1/5 of full wave rectified signal, and frequency is 2 times, under the effect of an equal amount of filter capacitor, identical DC voltage
The low 20dB of EMI interference signals of the EMI jam-to-signal full wave rectified signals of four superimposed output rectification circuit outputs of output.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect scope.
Claims (5)
1. a kind of rectification circuit, comprising transformer (1), phase shifter (2), rectifier (3), stacking network (4) and load (5), its
It is characterised by：
The transformer is used to export the all-wave sinusoidal voltage that the all-wave sinusoidal voltage change of input turns to two tunnel same-phases to shifting
Phase device；
The phase shifter is used to the all-wave sinusoidal voltage of two tunnel same-phases of input become to the all-wave for turning to two tunnel outs of phase just
String voltage output is to rectifier；
The rectifier is used to becoming the all-wave sinusoidal voltage of two tunnel outs of phase of input into the half-wave for turning to four tunnel outs of phase
Sinusoidal voltage is exported to stacking network；
The stacking network be used for by the half-wave sinusoidal voltage of four tunnel outs of phase according to corresponding phase difference superposition it is after-applied
In load.
2. rectification circuit according to claim 1, it is characterised in that the transformer is with the voltage output levels such as two
Transformer.
3. rectification circuit according to claim 1, it is characterised in that the phase shifter is moved by a shift capacitor and one
Phase inductance is constituted, and the sinusoidal voltage of all-wave all the way that shift capacitor is inputted to transformer carries out phase place change, and phase shift inductance is to transformation
Another road all-wave sinusoidal voltage of device input carries out phase place change.
4. rectification circuit according to claim 1, it is characterised in that the rectifier includes two bridge rectifiers, the
One bridge rectifier exports the half-wave sinusoidal voltage that two phase differences are 180 °, and second bridge rectifier exports two
Phase difference with two half-wave sinusoidal voltages of first bridge rectifier output is 90 ° of half-wave sinusoidal voltage.
5. rectification circuit according to claim 4, it is characterised in that the stacking network is two wires, wherein one is led
Line is by one end for exporting the load that is added to all the way of described two bridge rectifiers, and another wire is whole by described two bridge-types
Another road of current circuit exports the other end for the load that is added to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465233.2A CN107171575A (en) | 2017-06-19 | 2017-06-19 | Rectification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465233.2A CN107171575A (en) | 2017-06-19 | 2017-06-19 | Rectification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107171575A true CN107171575A (en) | 2017-09-15 |
Family
ID=59820158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710465233.2A Pending CN107171575A (en) | 2017-06-19 | 2017-06-19 | Rectification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107171575A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428472A (en) * | 2017-08-30 | 2019-03-05 | 中惠创智无线供电技术有限公司 | A kind of doube bridge current rectifying and wave filtering circuit based on sensibility reciprocal control |
| CN109921796A (en) * | 2017-12-13 | 2019-06-21 | 林项武 | A kind of circuit that the electric signal of mechanical periodicity is converted to direct current signal level |
| CN115097897A (en) * | 2022-05-20 | 2022-09-23 | 珠海市运泰利自动化设备有限公司 | Phase-staggered interleaving output method of signal generator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102278A (en) * | 1993-10-23 | 1995-05-03 | 龚秋声 | Paraphase rectifying circuit and its application |
| US20090073730A1 (en) * | 2005-10-31 | 2009-03-19 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | AC-DC Power Converter |
| CN104348371A (en) * | 2013-08-01 | 2015-02-11 | 上海稳得新能源科技有限公司 | Low-ripple single-phase rectifier |
-
2017
- 2017-06-19 CN CN201710465233.2A patent/CN107171575A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102278A (en) * | 1993-10-23 | 1995-05-03 | 龚秋声 | Paraphase rectifying circuit and its application |
| US20090073730A1 (en) * | 2005-10-31 | 2009-03-19 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | AC-DC Power Converter |
| CN104348371A (en) * | 2013-08-01 | 2015-02-11 | 上海稳得新能源科技有限公司 | Low-ripple single-phase rectifier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428472A (en) * | 2017-08-30 | 2019-03-05 | 中惠创智无线供电技术有限公司 | A kind of doube bridge current rectifying and wave filtering circuit based on sensibility reciprocal control |
| CN109921796A (en) * | 2017-12-13 | 2019-06-21 | 林项武 | A kind of circuit that the electric signal of mechanical periodicity is converted to direct current signal level |
| CN115097897A (en) * | 2022-05-20 | 2022-09-23 | 珠海市运泰利自动化设备有限公司 | Phase-staggered interleaving output method of signal generator |
| CN115097897B (en) * | 2022-05-20 | 2023-11-03 | 珠海市运泰利自动化设备有限公司 | Staggered weaving output method of signal generator |
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Application publication date: 20170915 |