CN106300994A - A kind of circuit for power conversion - Google Patents
A kind of circuit for power conversion Download PDFInfo
- Publication number
- CN106300994A CN106300994A CN201610896792.4A CN201610896792A CN106300994A CN 106300994 A CN106300994 A CN 106300994A CN 201610896792 A CN201610896792 A CN 201610896792A CN 106300994 A CN106300994 A CN 106300994A
- Authority
- CN
- China
- Prior art keywords
- circuit
- switch
- resistance
- power conversion
- former limit
- 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.)
- Granted
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/348—Passive dissipative snubbers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to power supply test field, particularly a kind of circuit for power conversion.Including transformator, first control circuit, second control circuit, filter circuit and rectification circuit；Described transformator includes the first former limit and the second former limit of parallel connection；The outfan on described first control circuit and the first former limit connects；The outfan on described second control circuit and the second former limit connects；The secondary of described transformator is connected with described rectification circuit by described filter circuit.In the circuit for power conversion that the present invention provides, two former limits that transformator includes and connects, two former limits are respectively adopted anti-phase control signal and control on or off；Meanwhile, the outfan of transformator is provided with filter circuit before rectification circuit, effectively reduces the spike of output circuit, improves ripple characteristics.
Description
Technical field
The present invention relates to power supply test field, particularly a kind of circuit for power conversion.
Background technology
Generally, when carrying out the test relevant to DC source, engineer must collect and configure multiple stage instrument, could be complete
Become direct current supply and measuring task.When performing these complex tasks, multiple stage test instrunment may be received simultaneously, thus increase
The risk made mistakes；To this end, engineer may select the automatic test complicated more than manual test, although but automatic test task
Manual errors can be reduced, but write, with debugging routine, the research and development engineer worked overloadingly is further increased work
Amount.And the appearance of DC source analyser avoids the debugging carrying out complexity before engineer uses multiple devices and test.Electricity
Source analyser enters the electric current of DUT by its built-in electric current kinetic measurement ability measurable flow, without such as current probe
Sensor this kind of with diverter；DC source analyser is without developing control and process of measurement, and all functions and measurement are the most integrated
In same equipment, without PC, driver and software, be equivalent to relevant workload be set decrease more than 90%；
User uses direct current supply that independent test equipment then just can complete with 2 day time and measures test assignment, uses unidirectional current
Source analyser just can be able to complete in 5 minutes.And usual, DC source analyser is integrated with circuit tester module, oscillograph mould
Block, random waveform generation module, data recordin module and multiple DC power supplier, wherein, multiple have different output work
One of the DC power supplier of rate most crucial device being undoubtedly power analysis instrument, and the circuit for power conversion of DC power supplier
Bearing most crucial power convert task especially, it is the most steady that the stability direct relation of this circuit module whole power module
Fixed reliable.
Summary of the invention
The goal of the invention of the present invention is for the circuit for power conversion pair of each power module in DC source analyser
The demand of stability, it is provided that a kind of working stability, it is adaptable to the circuit for power conversion of particular power module in power analysis instrument.
To achieve these goals, the technical solution used in the present invention is:
A kind of circuit for power conversion, including transformator, first control circuit, second control circuit, filter circuit and rectification circuit；
Described transformator includes the first former limit and the second former limit of parallel connection；Described first control circuit and the outfan on the first former limit
Connect；The outfan on described second control circuit and the second former limit connects；The secondary of described transformator passes through described filter circuit
It is connected with described rectification circuit.
Circuit for power conversion in common power supply can't arrange this filter circuit, the present invention before changing rectification circuit again
In, the effect of this filter circuit is the ripple reducing transformator output, carries out pre-adjustment before to transformer output signal rectification,
The increase of this circuit sacrifices signal processing efficiency to a certain extent, but the present invention arranges this circuit but before rectification circuit
Effectively reduce the spike of output signal, allow the ripple of output signal be much improved.
Further, described first control circuit includes the first shaping circuit, the first switch and the first peak absorbing circuit；
Described second control circuit includes the second shaping circuit, second switch and the second peak absorbing circuit；
Described first switch is connected with the outfan on described first former limit；Described second switch and the outfan on described second former limit
Connect；
The input of described first shaping circuit receives the first control signal, and its outfan connects the control of described first switch
End；
The input of described second shaping circuit receives the second control signal, and its outfan connects the control of described second switch
End；
Described first peak absorbing circuit switchs with described first and connects；Described second peak absorbing circuit and described second switch
And connect；
Described first control signal is anti-phase with described second control signal；Described first control signal, the second control signal are mutual
Mutually anti-phase PWM；Described first shaping circuit and the second shaping circuit are respectively used to allow the first control signal, the second control signal
Rising edge more precipitous, thus accelerate the response speed of the first switch and second switch.
Further, two electricity that described first peak absorbing circuit and described second peak absorbing circuit all include and connect
Resistance and the electric capacity concatenated with this and two resistance connecing.
Further, described first switch, second switch are field effect transistor；The drain electrode of described first switch connects described first
The outfan on former limit, the source ground of described first switch；The drain electrode of described second switch connects the outfan on described second former limit；
The source ground of described second switch.
Further, described circuit for power conversion also includes current collection circuit；Described current collection circuit is arranged on institute
State the input of transformer primary side；
Further, the input on described first former limit and the input parallel connection on described second former limit access described current acquisition electricity
Road.
Further, described current collection circuit is inductance；
Further, the first resistance, the second resistance, the 3rd resistance and the 4th resistance that described filter circuit includes and connects, and
The first electric capacity concatenated with described first resistance, the second resistance, the 3rd resistance and the 4th resistance；Described filter circuit and described change
The secondary of depressor also connects.
Further, described rectification circuit is bridge rectifier.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
In the circuit for power conversion that the present invention provides, two former limits that transformator includes and connects, two former limits are respectively adopted anti-phase
Control signal control on or off；Meanwhile, the outfan of transformator is provided with filter circuit before rectification circuit, effectively reduces
The spike of output circuit, improves ripple characteristics.
In certain embodiments, control circuit is provided with rectification circuit, makes the rising edge of control signal more precipitous, from
And accelerate the response speed of switch；Control circuit is additionally provided with sharp wave absorbing circuit, is effectively improved circuit characteristic, prevent point
Ripple occurs.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 a is first control circuit structured flowchart in the present invention.
Fig. 2 b is second control circuit structured flowchart in the present invention.
Fig. 3 is the circuit diagram of the present invention.
Fig. 4 a is first control circuit circuit diagram specific embodiment in the present invention.
Fig. 4 b is second control circuit circuit diagram specific embodiment in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
Embodiment 1: as Figure 1 and Figure 4, a kind of circuit for power conversion, including transformator T3, first control circuit 200,
Second control circuit 300, filter circuit 400 and rectification circuit 500；
Described transformator T3 includes the first former limit and the second former limit of parallel connection；Described first control circuit 200 and the first former limit
Outfan connects；Described second control circuit 300 is connected with the outfan on the second former limit；The secondary of described transformator T3 passes through institute
State filter circuit 400 to be connected with described rectification circuit 500.
Circuit for power conversion in common power supply can't arrange this filter circuit 400 before changing rectification circuit 500 again, this
In invention, the effect of this filter circuit 400 is the ripple reducing transformator T3 output, before to transformator T3 output signal rectification
Carrying out pre-adjustment, the increase of this circuit sacrifices signal processing efficiency to a certain extent, but the present invention is at rectification circuit 500
Front this circuit that arranges but effectively reduces the spike of output signal, allows the ripple of output signal be much improved.
As shown in Fig. 2 a, Fig. 2 b, Fig. 4 a, Fig. 4 b, described first control circuit 200 includes the first shaping circuit 202, first
Switch Q1 and the first peak absorbing circuit 203；
Described second control circuit 300 includes the second shaping circuit 302, second switch Q2 and the second peak absorbing circuit 303；
Described first switch Q1 is connected with the outfan 11 on described first former limit；Described second switch Q2 and described second former limit
Outfan 1 connects；
The input of described first shaping circuit 202 receives the first control signal MK1, and its outfan connects described first switch Q1
Control end；The input of described second shaping circuit 302 receives the second control signal MK2, and its outfan connects described second
The control end of switch Q2；Described first peak absorbing circuit 203 switchs Q1 with described first and connects；Described second peak absorbing electricity
Road 303 and described second switch Q2 also connect；Described first shaping circuit 202 includes the 5th diode that is anti-and that connect and the six or two pole
Pipe (D4 in Fig. 4 a represents that this is anti-and the 5th diode that connects and the 6th diode), wherein, the negative pole of described 5th diode
With positive pole short circuit, the input that negative pole is control signal MK1 of the 6th diode, the positive pole of the 6th diode and the 6th resistance R6
With the 5th resistance R5 connecing after concatenation；Same, described second shaping circuit 302 includes the 7th diode and the 8th that is anti-and that connect
Diode (D5 in Fig. 4 b represents that this is anti-and the 7th diode that connects and the 8th diode), wherein, described 7th diode
Negative pole and positive pole short circuit, the input that negative pole is control signal MK2 of the 8th diode, the positive pole and the 12nd of the 8th diode
With the 11st resistance R11 connecing after resistance R12 concatenation；
Described first control signal MK1 is anti-phase with described second control signal MK2；Described first control signal MK1, the second control
Signal MK2 is the most anti-phase PWM；Described first shaping circuit 202 and the second shaping circuit 302 are respectively used to allow the first control
Signal MK1, the second control signal MK2 rising edge more precipitous, thus accelerate the first switch Q1 and the response of second switch Q2
Speed.
Two resistance that described first peak absorbing circuit 203 and described second peak absorbing circuit 303 all include and connect
And the electric capacity concatenated with this and two resistance connecing, i.e. the first peak absorbing circuit 203 include and the 7th resistance R7 that connects and
8th resistance R8, meanwhile, also has the 3rd electric capacity C3 concatenated with the 7th resistance R7, the 8th resistance R8；Second peak absorbing circuit
303 include and the 9th resistance R9 that connects and the tenth resistance R10, meanwhile, also have and concatenate with the 9th resistance R9, the tenth resistance R10
Second electric capacity C2；.
Described first switch Q1, second switch Q2 is field effect transistor；The drain electrode of described first switch Q1 connects described first former
The outfan 11 on limit, the source ground of described first switch Q1；The drain electrode of described second switch Q2 connects the defeated of described second former limit
Go out end 1；The source ground of described second switch Q2.
Described circuit for power conversion also includes current collection circuit 600；Described current collection circuit 600 is arranged on described change
The input on the former limit of depressor T3；
The input on described first former limit and the input parallel connection on described second former limit access described current collection circuit. preferably
, described current collection circuit is inductance；
Described filter circuit 400 include and connect the first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4, with
And the first electric capacity C1 concatenated with described first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4；Described filtering
The secondary of circuit 400 and described transformator T3 also connects.
In some embodiments, described rectification circuit 500 is bridge rectifier 500.
During work, PWM drive signal MK1, MK2 drive field effect transistor Q1, Q3 to complete copped wave, T3 in the primary of transformator T3
Before the secondary bridge rectifier 500 being exported D7, D8, D9, D10 composition below by 5 feet, 7 feet, by C1, R1, R2, R3,
Copped wave pulse is filtered by R4, eliminates the spike in copped wave pulse, is conducive to rectifying and wave-filtering effect below, reduces output stricture of vagina
Ripple and noise.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (9)
1. a circuit for power conversion, it is characterised in that include transformator, first control circuit, second control circuit, filtered electrical
Road and rectification circuit；
Described transformator includes the first former limit and the second former limit of parallel connection；Described first control circuit and the outfan on the first former limit
Connect；The outfan on described second control circuit and the second former limit connects；The secondary of described transformator passes through described filter circuit
It is connected with described rectification circuit.
Circuit for power conversion the most according to claim 1, it is characterised in that described first control circuit includes the first shaping
Circuit, the first switch and the first peak absorbing circuit；
Described second control circuit includes the second shaping circuit, second switch and the second peak absorbing circuit；
Described first switch is connected with the outfan on described first former limit；Described second switch and the outfan on described second former limit
Connect；
The input of described first shaping circuit receives the first control signal, and its outfan connects the control of described first switch
End；
The input of described second shaping circuit receives the second control signal, and its outfan connects the control of described second switch
End；
Described first peak absorbing circuit switchs with described first and connects；Described second peak absorbing circuit and described second switch
And connect；
Described first control signal is anti-phase with described second control signal.
Circuit for power conversion the most according to claim 2, it is characterised in that described first peak absorbing circuit and described
Two peak absorbing circuits all include and two resistance connecing and the electric capacity concatenated with this and two resistance connecing.
Circuit for power conversion the most according to claim 2, it is characterised in that described first switch, second switch are field effect
Ying Guan；The drain electrode of described first switch connects the outfan on described first former limit, the source ground of described first switch；Described second
The drain electrode of switch connects the outfan on described second former limit；The source ground of described second switch.
Circuit for power conversion the most according to claim 1, it is characterised in that described circuit for power conversion also includes that electric current is adopted
Collector；Described current collection circuit is arranged on the input of described transformer primary side.
Circuit for power conversion the most according to claim 5, it is characterised in that the input on described first former limit and described
The input parallel connection on two former limits accesses described current collection circuit.
Circuit for power conversion the most according to claim 5, it is characterised in that described current collection circuit is inductance.
Circuit for power conversion the most according to claim 1, it is characterised in that the first electricity that described filter circuit includes and connects
Resistance, the second resistance, the 3rd resistance and the 4th resistance, and with described first resistance, the second resistance, the 3rd resistance and the 4th resistance
First electric capacity of concatenation；The secondary of described filter circuit and described transformator also connects.
Circuit for power conversion the most according to claim 1, it is characterised in that described rectification circuit is bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896792.4A CN106300994B (en) | 2016-10-14 | 2016-10-14 | A kind of circuit for power conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896792.4A CN106300994B (en) | 2016-10-14 | 2016-10-14 | A kind of circuit for power conversion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106300994A true CN106300994A (en) | 2017-01-04 |
| CN106300994B CN106300994B (en) | 2018-09-07 |
Family
ID=57718604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610896792.4A Active CN106300994B (en) | 2016-10-14 | 2016-10-14 | A kind of circuit for power conversion |
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| Country | Link |
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| CN (1) | CN106300994B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004289945A (en) * | 2003-03-24 | 2004-10-14 | Yokogawa Electric Corp | Switching power supply |
| CN202004651U (en) * | 2011-02-17 | 2011-10-05 | 昂宝电子（上海）有限公司 | Switching power supply circuit for flyback structure |
| CN103580484A (en) * | 2012-07-30 | 2014-02-12 | 台达电子工业股份有限公司 | Synchronous rectification device and control method thereof |
| CN203896189U (en) * | 2014-04-18 | 2014-10-22 | 深圳市祥森光电科技有限公司 | Power adapter control circuit for monitor |
| CN204928585U (en) * | 2015-09-29 | 2015-12-30 | 宁波龙源照明电器有限公司 | High PF value is turned over and is swashed topological circuit with overvoltage protection |
| CN206060548U (en) * | 2016-10-14 | 2017-03-29 | 成都前锋电子仪器有限责任公司 | A kind of circuit for power conversion |
-
2016
- 2016-10-14 CN CN201610896792.4A patent/CN106300994B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004289945A (en) * | 2003-03-24 | 2004-10-14 | Yokogawa Electric Corp | Switching power supply |
| CN202004651U (en) * | 2011-02-17 | 2011-10-05 | 昂宝电子（上海）有限公司 | Switching power supply circuit for flyback structure |
| CN103580484A (en) * | 2012-07-30 | 2014-02-12 | 台达电子工业股份有限公司 | Synchronous rectification device and control method thereof |
| CN203896189U (en) * | 2014-04-18 | 2014-10-22 | 深圳市祥森光电科技有限公司 | Power adapter control circuit for monitor |
| CN204928585U (en) * | 2015-09-29 | 2015-12-30 | 宁波龙源照明电器有限公司 | High PF value is turned over and is swashed topological circuit with overvoltage protection |
| CN206060548U (en) * | 2016-10-14 | 2017-03-29 | 成都前锋电子仪器有限责任公司 | A kind of circuit for power conversion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106300994B (en) | 2018-09-07 |
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