CN106533165A - Voltage-sharing circuit used for converter - Google Patents
Voltage-sharing circuit used for converter Download PDFInfo
- Publication number
- CN106533165A CN106533165A CN201710009563.0A CN201710009563A CN106533165A CN 106533165 A CN106533165 A CN 106533165A CN 201710009563 A CN201710009563 A CN 201710009563A CN 106533165 A CN106533165 A CN 106533165A
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- China
- Prior art keywords
- primary coil
- output capacitance
- anode
- voltage
- connects
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/1552—Boost converters exploiting the leakage inductance of a transformer or of an alternator as boost inductor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a voltage-sharing circuit used for a converter in the field of circuits. The voltage-sharing circuit comprises a transformer and a plurality of serially connected output capacitors, wherein the transformer is provided with two or more than two primary side coils with a common magnetic core; the dotted terminal of the N-th primary side coil is connected with the positive terminal of the N-th output capacitor through an N1-th switch tube and an N1-th inductor, the dotted terminal is connected with the positive terminal of the N-th output capacitor through an N1-th power switch tube and an N2-th diode, and the dotted terminal is further connected with the negative terminal of the N-th output capacitor through an N4-th diode; the different terminal of the N-th primary side coil is connected with the negative terminal of the N-th output capacitor through an N2-th power switch tube, and the different terminal is further connected with the positive terminal of the N-th output capacitor through an N3-th diode. The voltage-sharing circuit is applicable to high input and output voltage power converter circuits, and the whole voltage transformation process is good in voltage-sharing effect, simple to control and high in reliability.
Description
Technical field
The present invention relates to a kind of equalizer circuit for changer.
Background technology
As market is more and more to the demand of large power supply, high input, output voltage are much adopted in the market
Power supply, under high-pressure situations, changer internal component（Such as input, output capacitance etc.）Voltage stress accordingly increases.Therefore,
As shown in figure 1, frequently with two or more same converter series and parallel technology meeting power source performance requirement, particularly
In order to meet power supply stability（Ripple, loop etc.）, the electricity of two or more equal capacitance is generally adopted in input, outfan
Hold simultaneously, series connection, ideally the parameter of each changer is consistent, and so the input of each changer, output voltage are due to electricity
Hold partial pressure and be reduced to N/mono-（N be changer number, N >=2）, respective switch voltage stress equally can lower.In Fig. 1 only
Illustrate two equal inputs, output capacitance series connection block diagram, more than two equal capacitance series connection block diagram, as long as increasing successively, no longer
Illustrate.
But in side circuit, due to input, output capacitance inner parameter itself（Such as ESR etc.）Control in difference, changer
The discreteness of circuit parameter causes to drive the factors such as pulsewidth is inconsistent, can prevent input, the voltage in output capacitance from pressing.It is special
Not widely different in every LUSHEN number, changer is worked under underloading, it is possible to cause input, the serious voltage un-balance of output capacitance, meeting
So that the pressure not enough damage changer of the components and parts such as electric capacity, switching tube, output commutation diode.
Drawbacks described above, is worth solving.
The content of the invention
In order to overcome the shortcomings of existing technology, the present invention provides a kind of equalizer circuit for changer.
Technical solution of the present invention is as described below：
A kind of equalizer circuit for changer, it is characterised in that including transformator and the output capacitance of several series connection, described
Transformator is provided with the primary coil of two or more common magnetic cores, the number of the number of the primary coil and the output capacitance
It is identical, wherein,
The Same Name of Ends of n-th primary coil connects N1 inductance by the N1 switching tubes of unilateal conduction, and the N1 inductance is another
One end connects the anode of n-th output capacitance；The Same Name of Ends of the n-th primary coil connects the source of N1 power switch pipes
Pole, the negative electrode of the drain electrode connection N2 diodes of the N1 power switch pipes, the anode connection of the N2 diodes are described
The anode of n-th output capacitance；The Same Name of Ends of the n-th primary coil is also connected with the negative electrode of N4 diodes, the N4
The anode of diode connects the negative terminal of the n-th output capacitance；
The different name end of the n-th primary coil connects the drain electrode of N2 power switch pipes, the source of the N2 power switch pipes
Pole connects the negative terminal of the n-th output capacitance；The different name end of the n-th primary coil is also connected with the sun of N3 diodes
Pole, the negative electrode of the N3 diodes connect the anode of the n-th output capacitance.
According to the present invention of such scheme, it is characterised in that the N1 switching tubes be diode, the sun of the diode
Pole connects the Same Name of Ends of the n-th primary coil, and its negative electrode connects the N1 inductance.
According to the present invention of such scheme, it is characterised in that the N1 switching tubes are power switch pipe.
According to the present invention of such scheme, it is characterised in that the number of turn of each primary coil is identical, Same Name of Ends phase
Together.
According to the present invention of such scheme, its advantage is that the present invention is applied to high input, output voltage power supply and becomes
Converter circuit so that input, the voltage of output capacitance can reach and press during whole transformation, and voltage equalizing is good；Protection electricity
The components and parts such as appearance, switching tube, output commutation diode will not be damaged, and whole process control is simple, reliability is high.Circuit of the present invention
It is widely used, while having isolation effect.
Description of the drawings
Fig. 1 is the circuit diagram of changer specific embodiment in prior art.
Fig. 2 is the circuit diagram of a specific embodiment in the present invention.
Fig. 3 is the current flow diagrams of circuit in Fig. 2.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is conducted further description to the present invention：
A kind of equalizer circuit for changer, including the output capacitance of transformator and several series connection, transformator are provided with two
Or more common magnetic core primary coil, the number of primary coil is identical with the number of output capacitance.
As shown in Fig. 2 with two series connection output capacitances of equalizing transform device outfan（Capacitance is equal）Voltage（For input,
The equal output capacitance of outfan more than two and series connection, are similar to according to this, no longer illustrate）As a example by carry out principle explanation.Include in figure
One transformator T1, the transformator T1 primary coil T1-A, T1-B comprising two common magnetic cores, two primary coils T1-A, T1-
The B numbers of turn are identical, and Same Name of Ends is identical.
Primary coil T1-A and the 3rd diode D3, the first power switch pipe Q1, the second power switch pipe Q2 are in series, former
The Same Name of Ends of sideline circle T1-A connects the source electrode of the first power switch pipe Q1, and the anode of the 3rd diode D3 is connected to changer the
The anode of five output capacitances C5, the negative electrode of the 3rd diode D3 are connected to the drain electrode of the first power switch pipe Q1；Second power is opened
The source electrode for closing pipe Q2 is connected to the midpoint of the 5th output capacitance C5 of two electric capacity of converter output terminal and the 6th output capacitance C6（I.e.
The positive pole of six output capacitances C6）, the different name end of its drain electrode connection primary coil T1-A, while the Same Name of Ends of primary coil T1-A connects
Meet the N1 switching tube DN1 of unilateal conduction（Preferably the first diode D1, the first diode D1 can also adopt power switch pipe
Substitute.Can also be replaced using active switch pipe in other embodiments, switching tube can comprising MOSFET pipes, controllable silicon,
IGBT, constant power switching tube semiconductor device.）Anode, the negative electrode of the first diode D1, N1 switching tubes DN1 pass through inductance
L1（This inductance sensibility reciprocal transformation range can be big from 0 to infinity）It is connected to the anode of the 5th output capacitance C5 of changer；Former limit line
The Same Name of Ends of circle T1-A connects the negative electrode of the 6th diode D6, and the anode of the 6th diode D6 is connected to the output electricity of outfan the 5th
Hold the midpoint of C5 and the 6th output capacitance C6, it is defeated that the different name end of primary coil T1-A is connected to changer by the 5th diode D5
Go out anode.
In a preferred embodiment, the Same Name of Ends of primary coil T1-A connects the anode of the first diode D1, the first diode
The negative electrode connection inductance L1 of D1.
Primary coil T1-B is in series with the 4th diode D4, the 3rd power switch pipe Q3, the 4th power switch pipe Q4, former
The Same Name of Ends of sideline circle T1-B connects the source electrode of the 3rd power switch pipe Q3, and the anode of the 4th diode D4 is connected to changer the
The anode of six output capacitances C6, the negative electrode of the 4th diode D4 are connected to the drain electrode of the 3rd power switch pipe Q3；4th power is opened
The source electrode for closing pipe Q4 is connected to the negative terminal of the 6th output capacitance C6 of converter output terminal, and its drain electrode connection primary coil T1-B's is different
Name end, while the Same Name of Ends of primary coil T1-B connects the anode of the second diode D2, the negative electrode of the second diode D2 is by electricity
Sense L2 is connected to the anode of the 6th output capacitance C6 of changer；The Same Name of Ends of primary coil T1-B connects the moon of the 8th diode D8
Pole, the anode of the 8th diode D8 connect the negative terminal of the 6th output capacitance C6, and the different name end of primary coil T1-B passes through the seven or two
Pole pipe D7 is connected to the midpoint of the 5th output capacitance C5 of converter output terminal and the 6th output capacitance C6.
As shown in figure 3, the structural principle of the present invention is：
First power switch pipe Q1, the second power switch pipe Q2, the 3rd power switch pipe Q3, the 4th power switch pipe Q4 have driven
Exactly the same and respective dutycycle is less than 50%, and when to a pulse, four power tubes are simultaneously turned on, two series connection output capacitances
When voltage is pressed, upper and lower two winding circuits work is consistent, no energy exchange.When the input voltage of two changers it is inconsistent
When, it is assumed that Vout/2>VDC2, according to the law of electromagnetic induction, due to the presence of the 4th diode D4, input high pressure is all the way（T1-A）
Induced voltage by input voltage Di Na roads (T1-B) push up " dead ", export high-pressure side energy will by Transformer Winding T1-B with
Second diode D2, the second inductance L2 are delivered to output low-pressure end, its current direction as indicated by the arrows in fig. 3, so as to reach
Voltage equalizing.Its related rectification and principle of continuity of flow with well known double tube positive exciting topology theory as, here is not elaborated.Together
Reason, if Vout/2<During VDC2, its operation principle is ibid.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations should all belong to the protection domain of claims of the present invention.
Exemplary description is carried out to patent of the present invention above in conjunction with accompanying drawing, it is clear that the realization of patent of the present invention is not received
The restriction of aforesaid way, if the various improvement that the method design of patent of the present invention and technical scheme are carried out are employed, or without
The design of patent of the present invention and technical scheme are directly applied to other occasions by improvement, within the scope of the present invention.
Claims (4)
1. a kind of equalizer circuit for changer, it is characterised in that including transformator and the output capacitance of several series connection, institute
The primary coil that transformator is provided with two or more common magnetic cores is stated, the number of the primary coil is individual with the output capacitance
Number is identical, wherein,
The Same Name of Ends of n-th primary coil connects N1 inductance by the N1 switching tubes of unilateal conduction, and the N1 inductance is another
One end connects the anode of n-th output capacitance；The Same Name of Ends of the n-th primary coil connects the source of N1 power switch pipes
Pole, the negative electrode of the drain electrode connection N2 diodes of the N1 power switch pipes, the anode connection of the N2 diodes are described
The anode of n-th output capacitance；The Same Name of Ends of the n-th primary coil is also connected with the negative electrode of N4 diodes, the N4
The anode of diode connects the negative terminal of the n-th output capacitance；
The different name end of the n-th primary coil connects the drain electrode of N2 power switch pipes, the source of the N2 power switch pipes
Pole connects the negative terminal of the n-th output capacitance；The different name end of the n-th primary coil is also connected with the sun of N3 diodes
Pole, the negative electrode of the N3 diodes connect the anode of the n-th output capacitance.
2. the equalizer circuit for changer according to claim 1, it is characterised in that the N1 switching tubes are two poles
Pipe, the anode of the diode connect the Same Name of Ends of the n-th primary coil, and its negative electrode connects the N1 inductance.
3. the equalizer circuit for changer according to claim 1, it is characterised in that the N1 switching tubes are power
Switching tube.
4. the equalizer circuit for changer according to claim 1, it is characterised in that the circle of each primary coil
Number is identical, and Same Name of Ends is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009563.0A CN106533165B (en) | 2017-01-06 | 2017-01-06 | Voltage-sharing circuit for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009563.0A CN106533165B (en) | 2017-01-06 | 2017-01-06 | Voltage-sharing circuit for converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106533165A true CN106533165A (en) | 2017-03-22 |
| CN106533165B CN106533165B (en) | 2019-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710009563.0A Active CN106533165B (en) | 2017-01-06 | 2017-01-06 | Voltage-sharing circuit for converter |
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| Country | Link |
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| CN (1) | CN106533165B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962624A (en) * | 2019-04-22 | 2019-07-02 | 浙江万胜智能科技股份有限公司 | A kind of equalizer circuit for supply convertor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11235024A (en) * | 1998-02-09 | 1999-08-27 | Sanyo Denki Co Ltd | Inverter device |
| CN1431760A (en) * | 2003-01-27 | 2003-07-23 | 浙江大学 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
| CN1126236C (en) * | 2001-08-24 | 2003-10-29 | 艾默生网络能源有限公司 | Voltage balancer circuit for power converter |
| CN101552569A (en) * | 2008-12-10 | 2009-10-07 | 南京航空航天大学 | Synchronization inverter main circuit topology |
| CN202309557U (en) * | 2011-07-20 | 2012-07-04 | 珠海金电电源工业有限公司 | Switching power supply application circuit |
| CN105281575A (en) * | 2014-07-23 | 2016-01-27 | 艾默生网络能源系统北美公司 | Voltage-equalizing circuit |
-
2017
- 2017-01-06 CN CN201710009563.0A patent/CN106533165B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11235024A (en) * | 1998-02-09 | 1999-08-27 | Sanyo Denki Co Ltd | Inverter device |
| CN1126236C (en) * | 2001-08-24 | 2003-10-29 | 艾默生网络能源有限公司 | Voltage balancer circuit for power converter |
| CN1431760A (en) * | 2003-01-27 | 2003-07-23 | 浙江大学 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
| CN101552569A (en) * | 2008-12-10 | 2009-10-07 | 南京航空航天大学 | Synchronization inverter main circuit topology |
| CN202309557U (en) * | 2011-07-20 | 2012-07-04 | 珠海金电电源工业有限公司 | Switching power supply application circuit |
| CN105281575A (en) * | 2014-07-23 | 2016-01-27 | 艾默生网络能源系统北美公司 | Voltage-equalizing circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962624A (en) * | 2019-04-22 | 2019-07-02 | 浙江万胜智能科技股份有限公司 | A kind of equalizer circuit for supply convertor |
| CN109962624B (en) * | 2019-04-22 | 2024-03-12 | 浙江万胜智能科技股份有限公司 | Voltage equalizing circuit for power converter |
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| Publication number | Publication date |
|---|---|
| CN106533165B (en) | 2019-11-08 |
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Address after: Three road, Longgang Street Baolong Industrial Zone Road in Longgang District of Shenzhen City, Guangdong province 518000 No. 4, A Building 1, floor 2, B building 3, floor 4, C building 3, 4 floor, building D Applicant after: Shenzhen holdluck-zyt supply technology Limited by Share Ltd Address before: Three road, Longgang Street Baolong Industrial Zone Road in Longgang District of Shenzhen City, Guangdong province 518000 No. 4, A Building 1, floor 2, B building 3, floor 4, C building 3, 4 floor, building D Applicant before: ShenZhen VAPEL Power Supply Technology Co., Ltd. |
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