CN108631602A - A kind of accessory power supply being used in three level NPC AC synchronous samplings - Google Patents
A kind of accessory power supply being used in three level NPC AC synchronous samplings Download PDFInfo
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- CN108631602A CN108631602A CN201810503040.6A CN201810503040A CN108631602A CN 108631602 A CN108631602 A CN 108631602A CN 201810503040 A CN201810503040 A CN 201810503040A CN 108631602 A CN108631602 A CN 108631602A
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- anode
- diode
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- put supply
- driving chip
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Classifications
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- 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
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- 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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of accessory power supplys being used in three level NPC AC synchronous samplings,Including pwm chip U1,Metal-oxide-semiconductor Q1,Transformer T1 and photo-coupler PC1,The grid that the pwm chip U1 passes through resistance R4 connection metal-oxide-semiconductors Q1,The winding N1 of the drain electrode connection transformer T1 of metal-oxide-semiconductor Q1,The anode and capacitance C18 of diode D5,The anode of one end connection diode D1 of the winding N3 of transformer T1,The cathode connection capacitance C1 and out-put supply DC1 anodes of diode D1,The other end of capacitance C1 connects out-put supply DC1 cathode,The anode of one end connection diode D3 of the winding N4 of transformer T1,The cathode connection capacitance C2 and out-put supply DC2 anodes of diode D3,The other end of capacitance C2 connects out-put supply DC2 cathode,The anode of one end connection diode D4 of the winding N5 of transformer T1,The control strategy of present invention combination NPC three-level AC stream servos,Greatly simplifie auxiliary power circuit,Reduce the cost of driving power.
Description
Technical field
The present invention relates to a kind of power supply, specifically a kind of accessory power supply being used in three level NPC AC synchronous samplings.
Background technology
Two traditional level servo-drivers have obtained extensive utilization, but accompany with HF switch common-mode voltage,
The problems such as high dv/dt, brings many problems to motor, improves such case in recent years increasingly by more level servo-drivers
Cause extensive concern.More level servo-drivers are currently used primarily in mesohigh, powerful occasion, can generate higher electricity
Source quality, EMC and resistance to pressure and low switching loss.
The accessory power supply scheme for being currently used in three level NPC AC synchronous samplings is complex, generally use inverse-excitation type
Switching Power Supply adds half bridge power to export 12 road isolated power supplies, and driving power scheme is complex, and cost is extensive far above at present
The two level servo-drivers used.
Invention content
The purpose of the present invention is to provide a kind of accessory power supplys being used in three level NPC AC synchronous samplings, to solve
The problems mentioned above in the background art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of accessory power supply being used in three level NPC AC synchronous samplings, including pwm chip U1, metal-oxide-semiconductor Q1,
Transformer T1 and photo-coupler PC1, the pwm chip U1 by the grid of resistance R4 connection metal-oxide-semiconductors Q1, MOS pipes Q1's
The winding N1 of drain electrode connection transformer T1, the anode and capacitance C18 of diode D5, one end connection of the winding N3 of transformer T1
The anode of diode D1, the cathode connection capacitance C1 and out-put supply DC1 anodes of diode D1, the other end connection of capacitance C1
Out-put supply DC1 cathode, the anode of one end connection diode D3 of the winding N4 of transformer T1, the cathode connection electricity of diode D3
Hold C2 and out-put supply DC2 is positive, the other end connection out-put supply DC2 cathode of capacitance C2, the one of the winding N5 of transformer T1
The anode of end connection diode D4, the cathode connection capacitance C3 and out-put supply DC3 anodes of diode D4, capacitance C3's is another
End connection out-put supply DC3 cathode, the anode of one end connection diode D5 of the winding N6 of transformer T1, the cathode of diode D5
Capacitance C4 and out-put supply DC4 anodes are connected, the other end of capacitance C4 connects out-put supply DC4 cathode, and out-put supply DC1 is negative
Pole is also connected with error amplifier U2, and the other end of error amplifier U2 connects optical coupling PC1, the other end connection of optical coupling PC1
Pwm chip U1.
Preferred embodiment as the present invention：The out-put supply DC1 is just being connected to the anode of diode D6, diode D6
Cathode be connected to the other end of resistance R1, R1 and be connected to the anode of electrolytic capacitor E1, while being connected to one end of capacitance C6, together
When be connected to the power input of driving chip U11, the cathode of electrolytic capacitor E1 is connected to the ground of driving chip U11, connects simultaneously
It is connected to the emitter of switching tube Q1, out-put supply DC1 is just connected to the anode of electrolytic capacitor E2 simultaneously, while being connected to the one of C7
End, while it being connected to the power input of driving chip U12, the negative ground for being connected to driving chip U12 out-put supply DC1, simultaneously
It is connected to the emitter of switching tube Q2.
Preferred embodiment as the present invention：The out-put supply DC2 is just being connected to the anode of diode D8, diode D8's
The other end that cathode is connected to resistance R3, R3 is connected to the anode of electrolytic capacitor E5, while being connected to one end of capacitance C10, together
When be connected to the power input of driving chip U21, the cathode of electrolytic capacitor E5 is connected to the ground of driving chip U21, connects simultaneously
It is connected to the emitter of switching tube Q5, out-put supply DC2 is just connected to the anode of electrolytic capacitor E6 simultaneously, while being connected to C11's
One end, while it being connected to the power input of driving chip U22, the negative ground for being connected to driving chip U22 out-put supply DC2, together
When be connected to the emitter of switching tube Q6.
Preferred embodiment as the present invention：The power supply DC3 is just being connected to the anode of diode D10, and diode D10's is negative
The other end that pole is connected to resistance R5, R5 is connected to the anode of electrolytic capacitor E9, while being connected to one end of capacitance C14, simultaneously
It is connected to the power input of driving chip U31, the cathode of electrolytic capacitor E9 is connected to the ground of driving chip U31, connects simultaneously
To the emitter of switching tube Q9.Power supply DC3 is just connected to the anode of electrolytic capacitor E10 simultaneously, while being connected to one end of C15,
It is connected to the power input of driving chip U32 simultaneously, the negative ground for being connected to driving chip U32 power supply DC3 is connected to simultaneously
The emitter of switching tube Q10.
Preferred embodiment as the present invention：The out-put supply DC4 is just being connected to the anode of diode D7, diode D7
Cathode be connected to the other end of resistance R2, R2 and be connected to the anode of electrolytic capacitor E3, while being connected to one end of capacitance C8, together
When be connected to the out-put supply input terminal of driving chip U13, the cathode of electrolytic capacitor E3 is connected to the ground of driving chip U13, together
When be connected to the emitter of switching tube Q3, out-put supply DC4 is just connected to the anode of electrolytic capacitor E4 simultaneously, while being connected to C9
One end, while being connected to the out-put supply input terminal of driving chip U14, out-put supply DC4 is negative to be connected to driving chip U14's
Ground, while it being connected to the emitter of switching tube Q4, out-put supply DC4 is just being connected to the anode of diode D9, diode D9 simultaneously
Cathode be connected to the other end of resistance R4, R4 and be connected to the anode of electrolytic capacitor E7, while being connected to one end of capacitance C12,
It is connected to the out-put supply input terminal of driving chip U23 simultaneously, the cathode of electrolytic capacitor E7 is connected to the ground of driving chip U23,
It is connected to the emitter of switching tube Q7 simultaneously, out-put supply DC4 is just being connected to the anode of electrolytic capacitor E8, is being connected to simultaneously simultaneously
One end of C13, while it being connected to the out-put supply input terminal of driving chip U24, out-put supply DC4 is negative to be connected to driving chip
The ground of U24, while being connected to the emitter of switching tube Q8, out-put supply DC4 are just being connected to the anode of diode D11 simultaneously, and two
The other end that the cathode of pole pipe D11 is connected to resistance R6, R6 is connected to the anode of electrolytic capacitor E11, while being connected to capacitance
One end of C16, while it being connected to the out-put supply input terminal of driving chip U33, the cathode of electrolytic capacitor E11 is connected to driving core
The ground of piece U33, while it being connected to the emitter of switching tube Q11, out-put supply DC4 is just being connected to electrolytic capacitor E12 just simultaneously
Pole, while it being connected to one end of C17, while it being connected to the out-put supply input terminal of driving chip U34, out-put supply DC4 is negative to be connected
It is connected to the ground of driving chip U34, while being connected to the emitter of switching tube Q12.
Preferred embodiment as the present invention：It further include the method that archives intelligently dismount：Operating personnel are by the paper of complete package
Matter file box is put into assembly line transmission entrance, is identified by Intelligent identification camera, background computer passes through the information that is collected into
The parameter of file box encapsulation is automatically generated, after operator clicks executive button, mechanical arm disassembles archives of paper quality box, dismantling
File afterwards places transmission device by mechanical arm successively and enters digital scanning channel.
Preferred embodiment as the present invention：The parameter of the file box encapsulation includes file box size and bookbinding form.
Preferred embodiment as the present invention：Further include that archives compile the method ground automatically, is as follows：1) it is compiled by archives
Module is ground to retrieve corresponding archives catalog, list in volume database according to compiling and researching condition input by user and theme, inquire；
2) corresponding database server sends out data processing request after Web server executes operation, and excellent with intelligent algorithm
The adjustment mechanism of change is retrieved and the summarized results in right to analysis 1, passes through simple archives weight sequencing (archives output list
Position, time) and information cluster (inquiry theme or condition number of recurrences and content), by key content remittance for statistical analysis
Always, Compiling of Files achievement is generated；3) the Compiling of Files achievement of generation is submitted to Web server, Web clothes by database server
Business device is transmitted to client and is displayed on the screen；4) by Compiling of Files result in the form of Word document or Excel reports
It preserves or printout forms paper document preservation, realize that the automatic volume of archives is ground.
Preferred embodiment as the present invention：It further include the method that archives are intelligently repaired：1) preset writing in background computer
The program command of fuzzy reason and corresponding solution；2) smart electronics chip is added in scanner, connects background computer,
Automatically detection the handwriting is blurred reason in scanning process, and the electronic document page of generation is sent to background computer, is stored in pair
In the file for answering type；3) computer receive scanning complete file after according to scanning the deadline, be sent to figure successively
As processing software, the corresponding solution of the type is called, image is handled；4) by the text after recovery after processing is completed
Part is shown over the display, processing routine is again started up manually if dissatisfied, until satisfaction；5) it is multiple to preserve papery for printing
Printed document saves as electronic document using OCR identification technologies.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention be it is a kind of suitable for archives intelligence repair, from
Dynamicization dismounting scanning, intelligence are compiled and are ground, and are suitble to use when archives of paper quality is digitized processing in various archive offices.Archival digitalization
Acquisition is after carrying volume from profile entity library, and unreel, check and correction first carries out data acquisition, then again to archives by scanner
Bookbinding reduction, files electronic data.Accurately and reliably data information is provided for the utilization of archives.In the whole process,
Each link cooperates, cooperating, and the acquisition, reparation, audit of completion information, volume grind work in a pipeline fashion.Tradition carries
The archives of body are processed into digital archives form through high-tech technology, to meet the challenge of Archives Information Service new environment, improve pipe
Reason is horizontal, improves efficiency, and the service level of enhancing archival operation department provides height for archives internal control and custom service-orientated
The complete service of efficiency.
Description of the drawings
Fig. 1 is the circuit diagram of accessory power supply.
Fig. 2 is the circuit diagram of driving circuit.
Fig. 3 is the overall block diagram of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1-3, a kind of accessory power supply being used in three level NPC AC synchronous samplings, including pwm chip
The grid that U1, metal-oxide-semiconductor Q1, transformer T1 and photo-coupler PC1, the pwm chip U1 pass through resistance R4 connection metal-oxide-semiconductors Q1
Pole, the winding N1 of the drain electrode connection transformer T1 of metal-oxide-semiconductor Q1, the anode and capacitance C18 of diode D5, the winding N3 of transformer T1
One end connection diode D1 anode, the cathode connection capacitance C1 and out-put supply DC1 anodes of diode D1, capacitance C1's is another
One end connects out-put supply DC1 cathode, the anode of one end connection diode D3 of the winding N4 of transformer T1, the moon of diode D3
Pole connects capacitance C2 and out-put supply DC2 anodes, and the other end of capacitance C2 connects out-put supply DC2 cathode, transformer T1 around
The anode of one end connection diode D4 of group N5, the cathode connection capacitance C3 and out-put supply DC3 anodes of diode D4, capacitance C3
The other end connect out-put supply DC3 cathode, the anode of one end connection diode D5 of the winding N6 of transformer T1, diode
The cathode connection capacitance C4 and out-put supply DC4 anodes of D5, the other end of capacitance C4 connect out-put supply DC4 cathode, output electricity
Source DC1 cathode are also connected with error amplifier U2, and the other end of error amplifier U2 connects optical coupling PC1, and optical coupling PC1's is another
End connection pwm chip U1.
The present invention operation principle be：Accessory power supply busbar takes electricity, and power input is connected to resistance R10, while being connected to resistance
R7, while it being connected to transformer input winding, the other end for inputting winding is connected to the drain electrode of switching tube Q1, the source of switching tube Q1
Pole is with being connected to power input.
The other end of R7 is connected to one end of R8, and the other end of R8 is connected to one end of R9, and the other end of R9 is connected to
The energization pins of pwm chip U1, the energization pins of U1 are connected to one end of capacitance C5, and the other end of C5 is connected to power ground
The energization pins of N, U1 are connected to the cathode of rectifier diode D2 simultaneously, and the anode of D2 is connected to the auxiliary power supply of transformer T1
The other end of winding, auxiliary winding is connected to power ground N.
The driving output pin of pwm chip U1 is connected to one end of resistance R4, and the other end of resistance R4 is connected to out
Close the grid of pipe Q1.
First via out-put supply is connected to error amplifier, and error amplifier is connected to optocoupler primary side, and the secondary side of optocoupler connects
It is connected to the feedback pin of pwm chip U1.
One end of first via output winding is connected to the anode of diode D1, and the cathode of diode D1 is connected to capacitance C1's
One end, the other end for inputting winding are connected to the other end of capacitance C1.Constitute first via out-put supply DC1.
One end of second tunnel output winding is connected to the anode of diode D3, and the cathode of diode D3 is connected to capacitance C2's
One end, the other end for inputting winding are connected to the other end of capacitance C2.Constitute the second road out-put supply DC2.
One end of third road output winding is connected to the anode of diode D4, and the cathode of diode D4 is connected to capacitance C3's
One end, the other end for inputting winding are connected to the other end of capacitance C3.Constitute third road out-put supply DC3.
One end of 4th tunnel output winding is connected to the anode of diode D5, and the cathode of diode D5 is connected to capacitance C4's
One end, the other end for inputting winding are connected to the other end of capacitance C4.Constitute the 4th road out-put supply DC4.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (5)
1. a kind of accessory power supply being used in three level NPC AC synchronous samplings, including pwm chip U1, metal-oxide-semiconductor Q1, change
Depressor T1 and photo-coupler PC1, which is characterized in that the pwm chip U1 by the grid of resistance R4 connection metal-oxide-semiconductors Q1,
The winding N1 of the drain electrode connection transformer T1 of metal-oxide-semiconductor Q1, the anode and capacitance C18 of diode D5, the winding N3's of transformer T1
One end connects the anode of diode D1, and the cathode connection capacitance C1 and out-put supply DC1 anodes of diode D1, capacitance C1's is another
End connection out-put supply DC1 cathode, the anode of one end connection diode D3 of the winding N4 of transformer T1, the cathode of diode D3
Capacitance C2 and out-put supply DC2 anodes are connected, the other end of capacitance C2 connects out-put supply DC2 cathode, the winding of transformer T1
The anode of one end connection diode D4 of N5, the cathode connection capacitance C3 and out-put supply DC3 anodes of diode D4, capacitance C3's
The other end connects out-put supply DC3 cathode, and one end of the winding N6 of transformer T1 connects the anode of diode D5, diode D5's
Cathode connects capacitance C4 and out-put supply DC4 anodes, and the other end of capacitance C4 connects out-put supply DC4 cathode, out-put supply DC1
Cathode is also connected with error amplifier U2, and the other end of error amplifier U2 connects optical coupling PC1, and the other end of optical coupling PC1 connects
Meet pwm chip U1.
2. a kind of accessory power supply being used in three level NPC AC synchronous samplings according to claim 1, feature exist
In the out-put supply DC1 is just being connected to the anode of diode D6, and the cathode of diode D6 is connected to the another of resistance R1, R1
End is connected to the anode of electrolytic capacitor E1, while being connected to one end of capacitance C6, while the power supply for being connected to driving chip U11 is defeated
Enter end, the cathode of electrolytic capacitor E1 is connected to the ground of driving chip U11, while being connected to the emitter of switching tube Q1, output electricity
Source DC1 is just connected to the anode of electrolytic capacitor E2 simultaneously, while being connected to one end of C7, while being connected to driving chip U12's
Power input, out-put supply DC1 is negative to be connected to the ground of driving chip U12, while being connected to the emitter of switching tube Q2.
3. a kind of accessory power supply being used in three level NPC AC synchronous samplings according to claim 1, feature exist
In the out-put supply DC2 is just being connected to the anode of diode D8, and the cathode of diode D8 is connected to the another of resistance R3, R3
End is connected to the anode of electrolytic capacitor E5, while being connected to one end of capacitance C10, while being connected to the power supply of driving chip U21
The cathode of input terminal, electrolytic capacitor E5 is connected to the ground of driving chip U21, while being connected to the emitter of switching tube Q5, output
Power supply DC2 is just connected to the anode of electrolytic capacitor E6 simultaneously, while being connected to one end of C11, while being connected to driving chip U22
Power input, out-put supply DC2 is negative to be connected to the ground of driving chip U22, while being connected to the emitter of switching tube Q6.
4. a kind of accessory power supply being used in three level NPC AC synchronous samplings according to claim 1, feature exist
In the power supply DC3 is just being connected to the anode of diode D10, and the cathode of diode D10 is connected to the other end of resistance R5, R5
It is connected to the anode of electrolytic capacitor E9, while being connected to one end of capacitance C14, while the power supply for being connected to driving chip U31 is defeated
Enter end, the cathode of electrolytic capacitor E9 is connected to the ground of driving chip U31, while being connected to the emitter of switching tube Q9.Power supply DC3
It just is connected to the anode of electrolytic capacitor E10 simultaneously, while being connected to one end of C15, while being connected to the power supply of driving chip U32
Input terminal, power supply DC3 is negative to be connected to the ground of driving chip U32, while being connected to the emitter of switching tube Q10.
5. a kind of accessory power supply being used in three level NPC AC synchronous samplings according to claim 1, feature exist
In the out-put supply DC4 is just being connected to the anode of diode D7, and the cathode of diode D7 is connected to the another of resistance R2, R2
End is connected to the anode of electrolytic capacitor E3, while being connected to one end of capacitance C8, while being connected to the output electricity of driving chip U13
The cathode of source input terminal, electrolytic capacitor E3 is connected to the ground of driving chip U13, while being connected to the emitter of switching tube Q3, defeated
Go out power supply DC4 just while being connected to the anode of electrolytic capacitor E4, while being connected to one end of C9, while being connected to driving chip
The out-put supply input terminal of U14, out-put supply DC4 is negative to be connected to the ground of driving chip U14, while being connected to the hair of switching tube Q4
Emitter-base bandgap grading, out-put supply DC4 are just being connected to the anode of diode D9 simultaneously, and the cathode of diode D9 is connected to the another of resistance R4, R4
One end is connected to the anode of electrolytic capacitor E7, while being connected to one end of capacitance C12, while being connected to the defeated of driving chip U23
Go out power input, the cathode of electrolytic capacitor E7 is connected to the ground of driving chip U23, while being connected to the transmitting of switching tube Q7
Pole, out-put supply DC4 is just connected to the anode of electrolytic capacitor E8 simultaneously, while being connected to one end of C13, while being connected to driving
The out-put supply input terminal of chip U24, out-put supply DC4 is negative to be connected to the ground of driving chip U24, while being connected to switching tube Q8
Emitter, out-put supply DC4 is just being connected to the anode of diode D11 simultaneously, and the cathode of diode D11 is connected to resistance R6,
The other end of R6 is connected to the anode of electrolytic capacitor E11, while being connected to one end of capacitance C16, while being connected to driving chip
The cathode of the out-put supply input terminal of U33, electrolytic capacitor E11 is connected to the ground of driving chip U33, while being connected to switching tube
The emitter of Q11, out-put supply DC4 is just connected to the anode of electrolytic capacitor E12 simultaneously, while being connected to one end of C17, simultaneously
It is connected to the out-put supply input terminal of driving chip U34, the negative ground for being connected to driving chip U34 out-put supply DC4 connects simultaneously
To the emitter of switching tube Q12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503040.6A CN108631602A (en) | 2018-05-23 | 2018-05-23 | A kind of accessory power supply being used in three level NPC AC synchronous samplings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503040.6A CN108631602A (en) | 2018-05-23 | 2018-05-23 | A kind of accessory power supply being used in three level NPC AC synchronous samplings |
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|---|---|
| CN108631602A true CN108631602A (en) | 2018-10-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01160361A (en) * | 1987-12-14 | 1989-06-23 | Matsushita Electric Ind Co Ltd | Switching power supply |
| CN203377806U (en) * | 2013-06-19 | 2014-01-01 | 山东朗进科技股份有限公司 | Three-phase positive-negative switching power supply circuit |
| CN204741411U (en) * | 2015-07-17 | 2015-11-04 | 东莞华明灯具有限公司 | Single -stage PFC's low constant current circuit that decreases of low ripple |
| CN204794705U (en) * | 2015-07-17 | 2015-11-18 | 西安科技大学 | Multiplexed output flyback converter of uninterrupted power supply |
-
2018
- 2018-05-23 CN CN201810503040.6A patent/CN108631602A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01160361A (en) * | 1987-12-14 | 1989-06-23 | Matsushita Electric Ind Co Ltd | Switching power supply |
| CN203377806U (en) * | 2013-06-19 | 2014-01-01 | 山东朗进科技股份有限公司 | Three-phase positive-negative switching power supply circuit |
| CN204741411U (en) * | 2015-07-17 | 2015-11-04 | 东莞华明灯具有限公司 | Single -stage PFC's low constant current circuit that decreases of low ripple |
| CN204794705U (en) * | 2015-07-17 | 2015-11-18 | 西安科技大学 | Multiplexed output flyback converter of uninterrupted power supply |
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