CN102263497B - Direct-current electronic voltage dividing and regulating device utilizing capacitors to share voltage - Google Patents
Direct-current electronic voltage dividing and regulating device utilizing capacitors to share voltage Download PDFInfo
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- CN102263497B CN102263497B CN 201110206262 CN201110206262A CN102263497B CN 102263497 B CN102263497 B CN 102263497B CN 201110206262 CN201110206262 CN 201110206262 CN 201110206262 A CN201110206262 A CN 201110206262A CN 102263497 B CN102263497 B CN 102263497B
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Abstract
The invention relates to electric power and electronics disciplines of the electrician class, aims at providing a direct-current electronic voltage dividing and regulating device which utilizes capacitors to share voltage. The direct-current electronic voltage dividing and regulating device comprises a plurality of serially connected electrolytic capacitors, and choppers the number of which corresponds to that of the electrolytic capacitors, wherein one end of each electrolytic capacitor is respectively connected with a chopper switch, the choppers have a same structure and are synchronously turned on and off, and two serially connected diodes are connected at two ends of each electrolytic capacitor. The direct-current electronic voltage dividing and regulating device provided by the invention can divide higher direct-current voltage into multiple groups of lower adjustable direct-current voltage. The direct-current electronic voltage dividing and regulating device has higher efficiency, thereby being applicable to high-power occasions, allows direct current output by all the groups to have certain degree of non-uniformity, and allows certain extent of low-frequency or high-frequency component alternating current.
Description
Technical field
The invention belongs to electrician's class power electronics, be specifically related to a kind of DC electronic dividing potential drop voltage regulator that utilizes capacitor voltage equalizing.
Background technology
The number of winning the confidence at present with dc partial voltage adopt electric resistance partial pressure mostly, be about to two or more resistance string and be connected on the direct voltage, perhaps potentiometer dividing potential drop commonly used.Assign to a part of voltage on each or every section resistance, form voltage divider.This voltage divider efficient is low, be applicable to the number of winning the confidence with or small-power usefulness, be not suitable for powerful occasion.Another kind is applicable to that powerful way is that direct current is at first become interchange, becomes some groups of interchanges with transformer again, is rectified into some groups of direct currents then.This way equipment complexity, cost height.
Summary of the invention
The problem to be solved in the present invention is, overcomes deficiency of the prior art, and a kind of DC electronic dividing potential drop voltage regulator is provided.
Be the technical solution problem, solution of the present invention is:
A kind of DC electronic dividing potential drop voltage regulator that utilizes capacitor voltage equalizing is provided, comprise an existing total DC power supply, the electrolytic capacitor that also comprises several series connection, and the chopper corresponding with electrolytic capacitor quantity, one termination of each electrolytic capacitor has a chopper switches, the identical and synchronous break-make of each chopper structure; The two ends of each electrolytic capacitor are connected to two diode in series, and except the afterbody chopper, other has a capacitor to be connected between the output of the mid point of above-mentioned two series diodes and next stage chopper switches; Except first order chopper, also have a capacitor to be connected between the output of the mid point of above-mentioned two series diodes and upper level chopper switches.
As a kind of improvement, the anode of described electrolytic capacitor and the input of chopper switches join, and perhaps the input of the negative terminal of electrolytic capacitor and chopper switches joins.
As a kind of improvement, be provided with fly-wheel diode between the other end of the output of each chopper switches and corresponding electrolytic capacitor.
The present invention also provides the another kind of DC electronic dividing potential drop voltage regulator that utilizes capacitor voltage equalizing, comprise an existing total DC power supply, and the electrolytic capacitor of several series connection, per two electrolytic capacitors are connected into one group of two electrolytic capacitor, and the positive and negative end of every group of two electrolytic capacitors all is connected to a chopper switches to form two choppers; Every group of two identical and synchronous break-make of chopper structure, the synchronous break-make of the chopper switches of two-stage up and down of its inside or half chopping cycle break-make of mutual deviation; Each electrolytic capacitor two ends all is connected to two diode in series, and wherein: the mid point of first diode tandem compound and this group and adjacent going up between the output of organizing two subordinate's chopper switches in two choppers are connected to a capacitor respectively; Between the output of two higher level's chopper switches in the mid point of second diode tandem compound and this group and the two choppers of adjacent group down, be connected to a capacitor respectively.
Form mid point when the two-stage chopper of every group of two choppers is connected, the occasion that has must will have mid point, and draws center line.
As a kind of improvement, in first group of two chopper, the mid point of first diode tandem compound only and between the subordinate's chopper switches output in this group is connected to a capacitor; In the end in one group of two chopper, the mid point of second diode tandem compound only and between the interior higher level's chopper switches output of this group is connected to a capacitor.
As a kind of improvement, be provided with fly-wheel diode between the other end of the output of each chopper switches and corresponding electrolytic capacitor.
Among the present invention, chopper refers to comprise fly-wheel diode at an interior grip assembly.And chopper switches refers to the IGBT switch in the chopper.Anode or negative terminal that the IGBT switch is connected on chopper are indifferent, and these are conventional techniques.Main innovate point of the present invention is to utilize capacitor that each voltage divider is all pressed.
Beneficial effect of the present invention is:
The present invention can realize a higher direct voltage is divided into several groups lower direct voltage that can regulate (function that chopper has regulation voltage).This voltage divider has higher efficient, so applicable to large-power occasions.And the electric current that allows respectively to organize direct current output has to a certain degree inhomogeneous, also allows to contain the low frequency of certain limit or the interchange of high fdrequency component.
Description of drawings
Fig. 1 is the circuit theory diagrams of specific embodiment 1.
Fig. 2 is the circuit theory diagrams of specific embodiment 2.
Embodiment
Specific embodiment 1 (as shown in Figure 1):
This dc partial voltage voltage regulator comprises the electrolytic capacitor of several series connection, also comprises the chopper corresponding with electrolytic capacitor quantity, and a termination of each electrolytic capacitor has a chopper switches, the identical and synchronous break-make of each chopper structure; Each electrolytic capacitor two ends is connected to two diode in series (D among the figure
1a, D
A3, D
3b, D
B5, D
5c, D
C7, D
7d...), except the afterbody chopper, other has a capacitor (C among the figure
A4, C
B6, C
C8...) be connected on above-mentioned two series diode (D among the figure
1a-D
A3, D
3b-D
B5, D
5c-D
C7...) mid point and the output of next stage chopper switches between, except first order chopper, also have a capacitor (C among the figure
2b, C
4c, C
6d...) be connected on two series diode (D among the figure
1a-D
A3, D
3b-D
B5, D
5c-D
C7...) mid point and the output of upper level chopper switches between; Be provided with fly-wheel diode between one end of the output of each chopper switches and corresponding electrolytic capacitor.
This dc partial voltage voltage regulator is a kind of high power DC electron partial pressure device, and can realize voltage regulation function by changing duty ratio.Fig. 1 represents that the chopper control device of several synchronous break-makes is cascaded, with total direct voltage U
d=U
13+ U
35+ U
57+ ... chopper control is some sections dividing potential drop U
23, U
45, U
67...In order to make each section voltage U
13, U
35, U
57... equate, thus U
23, U
45, U
67... also equate, met a cover diode D among Fig. 1
1a, D
A3, D
3b, D
B5, D
5c, D
C7, D
7d... and two cover capacitor C
2b, C
4c, C
6d... and capacitor C
A4, C
B6, C
C8...The first cover capacitor C
2b, C
4c, C
6d... guarantee U
13≯ U
35≯ U
57≯ ..., the second cover capacitor C
A4, C
B6, C
C8... guarantee U
13≮ U
35≮ U
57≮ ... so, U
13=U
35=U
57=...
How two cover capacitors play above-mentioned two assurances, the reasons are as follows: when the K switch conducting, and D
1a, D
3b, D
5c, D
7d... conducting, U
C2b=U
Ca4=U
13, U
C4c=U
Cb6=U
35, U
C6d=U
Cc8=U
57D when K switch disconnects
A3, D
B5, D
C7... conducting, the also conducting of the fly-wheel diode of each chopper, if this moment U
C2b＞U
35, U then
C2bMust be to U
35Charging equates the two, i.e. U
C2b≯ U
35, and U
C2b=U
13So, U
13≯ U
35Can prove each n-th-trem relation n in the top two cover assurance formulas equally.
Specific embodiment 2 (as shown in Figure 2):
Need adopt the K switch of high voltage when each grade dividing potential drop is higher, price is higher, and can be divided into each chopper two and be together in series this moment, and each K switch also is divided into two.Wherein two choppers are respectively in the positive and negative end copped wave of voltage.The principle of this specific embodiment is the same with specific embodiment 1.
By technique scheme, the present invention can realize:
1, can realize the function of regulation voltage by the duty ratio that changes chopper, a higher direct voltage is divided into several groups lower direct voltage that can regulate.
2, this voltage divider has higher efficient, and it can adopt the IGBT of big electric current to make chopper, and can will be divided into several groups low voltage as high voltages such as 6KV, 10KV, so applicable to high-power high voltage occasion.
3, the electric current that allows respectively to organize direct current output has to a certain degree inhomogeneous, also allows to contain the low frequency of certain limit or the interchange of high fdrequency component.Then the electrochemical capacitor voltages at different levels of input will unequal gradually when the electric current of each group output has to a certain degree inconsistent, and two cover assurances of above-mentioned series diode and electric capacity will make the voltage of electrochemical capacitors at different levels still recover equal this moment.So still can operate as normal.
Claims (3)
1. DC electronic dividing potential drop voltage regulator that utilizes capacitor voltage equalizing, comprise an existing total DC power supply, it is characterized in that, the electrolytic capacitor that also comprises several series connection, per two electrolytic capacitors are connected into one group of two electrolytic capacitor, and the positive and negative end of every group of two electrolytic capacitors all is connected to a chopper switches to form two choppers; Every group of two identical and synchronous break-make of chopper structure, the synchronous break-make of the chopper switches of two-stage up and down of its inside or half chopping cycle break-make of mutual deviation;
Each electrolytic capacitor two ends all is connected to two diode in series, and wherein: the mid point of first diode tandem compound and this group and adjacent going up between the output of organizing two subordinate's chopper switches in two choppers are connected to a capacitor respectively; Between the output of two higher level's chopper switches in the mid point of second diode tandem compound and this group and the two choppers of adjacent group down, be connected to a capacitor respectively.
2. DC electronic dividing potential drop voltage regulator according to claim 1 is characterized in that, in first group of two chopper, the mid point of first diode tandem compound only and between the subordinate's chopper switches output in this group is connected to a capacitor; In the end in one group of two chopper, the mid point of second diode tandem compound only and between the interior higher level's chopper switches output of this group is connected to a capacitor.
3. according to any described DC electronic dividing potential drop voltage regulator in claim 1 or 2, it is characterized in that, be provided with fly-wheel diode between the other end of the output of each chopper switches and corresponding electrolytic capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110206262 CN102263497B (en) | 2011-07-21 | 2011-07-21 | Direct-current electronic voltage dividing and regulating device utilizing capacitors to share voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110206262 CN102263497B (en) | 2011-07-21 | 2011-07-21 | Direct-current electronic voltage dividing and regulating device utilizing capacitors to share voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102263497A CN102263497A (en) | 2011-11-30 |
| CN102263497B true CN102263497B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110206262 Expired - Fee Related CN102263497B (en) | 2011-07-21 | 2011-07-21 | Direct-current electronic voltage dividing and regulating device utilizing capacitors to share voltage |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764422A (en) * | 2010-01-15 | 2010-06-30 | 浙江大学 | Equalizer circuit for series-connection charge-discharge unit |
| CN202172361U (en) * | 2011-07-21 | 2012-03-21 | 汪槱生 | DC electronic partial pressure regulator utilizing capacitance pressure equalizing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3898092B2 (en) * | 2002-06-03 | 2007-03-28 | 株式会社指月電機製作所 | Voltage equalization circuit for storage element, voltage detection circuit using the same, and voltage equalization charging circuit |
| US8432712B2 (en) * | 2008-05-30 | 2013-04-30 | Itron, Inc. | Single switch high efficiency power supply |
| US8330436B2 (en) * | 2008-06-30 | 2012-12-11 | Intel Corporation | Series and parallel hybrid switched capacitor networks for IC power delivery |
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2011
- 2011-07-21 CN CN 201110206262 patent/CN102263497B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764422A (en) * | 2010-01-15 | 2010-06-30 | 浙江大学 | Equalizer circuit for series-connection charge-discharge unit |
| CN202172361U (en) * | 2011-07-21 | 2012-03-21 | 汪槱生 | DC electronic partial pressure regulator utilizing capacitance pressure equalizing |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2004-15843A 2004.01.15 |
| 串联电容器组电压均衡研究;刘小宝等;《电力电子技术》;20090331;第43卷(第3期);48-50 * |
| 刘小宝等.串联电容器组电压均衡研究.《电力电子技术》.2009,第43卷(第3期),48-50. |
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| CN102263497A (en) | 2011-11-30 |
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