CN106411111A - Method for balancing parallel output voltage of power supplies and power supply device - Google Patents
Method for balancing parallel output voltage of power supplies and power supply device Download PDFInfo
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- CN106411111A CN106411111A CN201611040586.XA CN201611040586A CN106411111A CN 106411111 A CN106411111 A CN 106411111A CN 201611040586 A CN201611040586 A CN 201611040586A CN 106411111 A CN106411111 A CN 106411111A
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- output voltage
- power supply
- parallel
- controlled plant
- current
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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
- H02M1/00—Details of apparatus for conversion
-
- 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
- H02M1/0083—Converters characterised by their input or output configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention provides a method for balancing the parallel output voltage of power supplies and a power supply device. The method comprises that S11) all power supplies in parallel connection are isolated from one another; S12) whether the output voltage needs to be adjusted is determined according to the present output voltages of all the power supplies in parallel connection, if YES, S13) is turned to, and if NO, S17) is turned to; S13) the power supply whose output voltage needs to be adjusted is set as an adjustment object; S14) the adjustment object implements power-constant output; S15) the output current of the adjustment object is increased according to a predetermined rule, so that the present output voltage of the adjustment object is reduced; S16) whether the output voltage needs to be adjusted is determined according to the present output voltages of all the power supplies in parallel connection again, if NO, parallel connection of all the power supplies is recovered and the S17) is carried out; and if YES, the S13) is returned to; and S17) output is carried out according to the present output voltage. The power supplies can be used by being connected in parallel directly, different power requirements of different occasions are met, and the stability of the power supply device is improved.
Description
Technical field
The present invention relates to power technique fields, the more particularly, to method of equilibrium power sources in parallel output voltage and supply unit.
Background technology
In traditional outdoor power supply design, generally using constant voltage source group, electrical equipment is powered, in order to
Reach the power reguirements of load, described constant voltage source group generally adopts the constant voltage source composition of multiple series connection, due to described constant voltage
The output voltage of the service life of each constant voltage source in power supply group, damage situations difference and each constant voltage source is different,
Any power demand of user can not be met；And traditional constant voltage source is because output voltage difference is thus can not directly carry out simultaneously
Connection operation, easily the power supply low to output voltage causes to pour in down a chimney and damages power supply；Or adopt balancing equipment, equalize each power supply
Output voltage, but limited in the number of power sources that this mode can be in parallel, and balancing equipment can bring extra-pay to lead to into
This increase.
Content of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of method of equilibrium power sources in parallel output voltage,
Enable power supply directly used in parallel.
Embodiment of the present invention technical problem to be solved further is, provides a kind of equilibrium power sources in parallel output voltage
Supply unit is so that power supply can be directly used in parallel.
For solving above-mentioned technical problem, the embodiment of the present invention provides following technical scheme：A kind of equilibrium parallel connection power supply output
The method of voltage, including：
Step S11, all power supply singles in parallel are isolated from each other；
Step S12, determines the need for adjusting output voltage according to the current output voltage of all power supply singles in parallel, such as
It is to skip to step S13, such as no, skip to step S17；
Step S13 is it would be desirable to the power supply single adjusting output voltage is set to controlled plant；
Step S14, makes described controlled plant carry out firm power output；
Step S15, increases the output current of described controlled plant according to pre-defined rule, makes the current output electricity of described controlled plant
Pressure drop is low；
Step S16, the current output voltage again according to all power supply singles in parallel determines the need for adjusting output voltage,
As no, carry out step S17, in this way, skip back to the circulation of step S13 and carry out described step S13 ~ step S16；
Step S17, recovers being connected in parallel of all power supply singles, is exported according to current output voltage.
Further, the current output voltage according to all power supply singles in parallel in described step S12 and step S16
Determine the need for regulation output voltage to specifically include：
Step S121, detects the current output voltage of each power supply single；
Step S122, whether the distributed area of current output voltage judging each power supply single is in predetermined standard interval range
Interior, in this way, it is defined as to carry out voltage-regulation, as no it is determined that being to need to carry out voltage-regulation.
Further, concrete by needing the power supply single adjusting output voltage to be defined as controlled plant in described step S13
Including：
S131, the relatively output voltage of each power supply single；
S132, one power supply single of output voltage highest in each power supply single is defined as controlled plant.
Further, step S15 specifically includes：
Step S151, adjusts, according to default, the regulated quantity that rule determines the load of described controlled plant；
Step S152, adjusts described load according to described regulated quantity, to increase the output current of controlled plant.
On the other hand, the present invention also provides a kind of supply unit of equilibrium power sources in parallel output voltage, including：
Isolation module, for being isolated from each other all power supply singles in parallel；
Analysis module, for determining the need for adjusting output electricity according to the current output voltage of all power supply singles in parallel
Pressure；
Designated module, for being set to controlled plant by the power supply single needing to adjust output voltage；
Control module, is used for making described controlled plant carry out firm power output；
Adjustment module, for increasing the output current of described controlled plant according to pre-defined rule, makes the current of described controlled plant
Output voltage reduces；
Output module, for recovering being connected in parallel of all power supply singles, is exported according to current output voltage.
Further, described analysis module includes：
Detector unit, for detecting the current output voltage of each power supply single；
Judging unit, for judge each power supply single current output voltage distributed area whether in predetermined standard interval model
In enclosing.
Further, described designated module includes：
Comparing unit, for the output voltage of relatively each power supply single；
Designating unit, for being defined as controlled plant by one power supply single of output voltage highest in each power supply single.
Further, described adjustment module includes：
Computing unit, for adjusting, according to default, the regulated quantity that rule determines the load of described controlled plant；
Adjustment unit, for adjusting described load according to described regulated quantity, to increase the output current of controlled plant.
Further, described isolation module includes the combination of one or more of following device：Diode, triode,
FET or integrated circuit.
After technique scheme, the embodiment of the present invention at least has the advantages that：The embodiment of the present invention provides
The method of the output voltage of power supply single and its supply unit of all parallel connections can be equalized, defeated by output current feedback regulation
Go out voltage so that the output voltage of each power supply single is to meet the technical requirements that power sources in parallel uses, so that power supply single
Can be directly used in parallel, disclosure satisfy that the different capacity demand of different use occasions, effectively improve stablizing of electric power system
Property and service efficiency.
Brief description
Fig. 1 is the schematic flow sheet of one embodiment of method that the present invention equalizes power sources in parallel output voltage.
Fig. 2 is that the idiographic flow of step S12 of one embodiment of method that the present invention equalizes power sources in parallel output voltage shows
It is intended to.
Fig. 3 is the idiographic flow of step S15 that the present invention equalizes in one embodiment of method of power sources in parallel output voltage
Schematic diagram.
Fig. 4 is the structural representation of one embodiment of supply unit that the present invention equalizes power sources in parallel output voltage.
Fig. 5 is the structure of the analysis module that the present invention equalizes in one embodiment of supply unit of power sources in parallel output voltage
Schematic diagram.
Fig. 6 is the concrete of the designated module that the present invention equalizes in one embodiment of supply unit of power sources in parallel output voltage
Structural representation.
Fig. 7 is the concrete of the adjustment module that the present invention equalizes in one embodiment of supply unit of power sources in parallel output voltage
Structural representation.
Specific embodiment
With specific embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It should be appreciated that following signal
Property embodiment and explanation only be used for explain the present invention, not as a limitation of the invention, and, in the case of not conflicting,
Embodiment in the application and the feature in embodiment can be combined with each other.
As shown in figure 1, the embodiment of the present invention provides a kind of method of equilibrium parallel connection power supply output voltage, including：
Step S11, all power supply singles in parallel are isolated from each other；
Step S12, determines the need for adjusting output voltage according to the current output voltage of all power supply singles in parallel, such as
It is to skip to step S13, such as no, skip to step S17；
Step S13 is it would be desirable to the power supply single adjusting output voltage is set to controlled plant；
Step S14, makes described controlled plant carry out firm power output；
Step S15, increases the output current of described controlled plant according to pre-defined rule, makes the current output electricity of described controlled plant
Pressure drop is low；
Step S16, the current output voltage again according to all power supply singles in parallel determines the need for adjusting output voltage,
As no, carry out step S17, in this way, skip back to the circulation of step S13 and carry out described step S13 ~ step S16；
Step S17, recovers being connected in parallel of all power supply singles, is exported according to current output voltage.
The embodiment of the present invention provides the method for the output voltage of power supply single that can equalize all parallel connections and its power supply dress
Put, make the output voltage of each power supply single meet power sources in parallel use by output current feedback regulation output voltage
Technical requirements, so that power supply single can be directly used in parallel, disclosure satisfy that the different capacity demand of different use occasions,
Effectively improve stability and the service efficiency of electric power system.
As shown in Fig. 2 in one alternate embodiment, in described step S12 and step S16 according to all electricity in parallel
The current output voltage of source monomer determines the need for regulation output voltage and specifically includes：
Step S121, detects the current output voltage of each power supply single；
Step S122, whether the distributed area of current output voltage judging each power supply single is in predetermined standard interval range
Interior, in this way, it is defined as to carry out voltage-regulation, as no it is determined that being to need to carry out voltage-regulation.
In the present embodiment, when the distributed area of the current output voltage detecting each power supply single is in predetermined standard interval model
When enclosing interior, can directly skip follow-up regulating step, directly carry out power output, effectively improve and adjust efficiency.
In one alternate embodiment, the power supply single adjusting output voltage will be needed to be defined as adjusting in described step S13
Section object specifically includes：
S131, the relatively output voltage of each power supply single；
S132, one power supply single of output voltage highest in each power supply single is defined as controlled plant.
In the present embodiment, one power supply single of output voltage highest is set as that controlled plant is conducive to follow-up regulation
The carrying out of step.
As shown in figure 3, in one alternate embodiment, step S15 specifically includes：
Step S151, adjusts, according to default, the regulated quantity that rule determines the load of described controlled plant；
Step S152, adjusts described load according to described regulated quantity, to increase the output current of controlled plant.
In the present embodiment, first calculate the regulated quantity of the load determining described controlled plant, then further according to described regulated quantity
Adjust described load, with and increase the output current of controlled plant, step simple and fast, effectively improve the efficiency adjusting.
As shown in figure 4, on the other hand, the embodiment of the present invention also provides a kind of power supply dress of equilibrium power sources in parallel output voltage
Put 1, including：
Isolation module 11, for being isolated from each other all power supply singles in parallel；
Analysis module 12, for determining the need for adjusting output electricity according to the current output voltage of all power supply singles in parallel
Pressure；
Designated module 13, for being set to controlled plant by the power supply single needing to adjust output voltage；
Control module 14, is used for making described controlled plant carry out firm power output；
Adjustment module 15, for increasing the output current of described controlled plant according to pre-defined rule, makes working as of described controlled plant
Front output voltage reduces；
Output module 17, for recovering being connected in parallel of all power supply singles, is exported according to current output voltage.
The embodiment of the present invention determines the need for adjusting output voltage by analysis module 12, in this way, then can be by specified mould
After block 13 determines controlled plant, come the output voltage of controlled plant is adjusted with control module 14 and adjustment module 15
Section, and be analyzed again judging by analysis module 12 again after completing to adjust, to determine the need for repeating regulation process,
Until the output voltage of each power supply single after adjusting meets the requirements, so that power supply single can be directly used in parallel, energy
Enough different capacity demands meeting different use occasions, effectively improve stability and the service efficiency of electric power system.
Described isolation module 11 is mainly used in preventing all power supply singles of parallel connection from due to respective current voltage value not being
During highest, prevent pouring in down a chimney so as to become load of other power supply singles, and then damage.In the specific implementation, described isolation module
11 can include the combination with one or more of Types Below：Diode, triode, FET or integrated circuit.When
When after analysis module 12 analysis, determination need not adjust output voltage, described output module 17 can release the shape of isolation module 11
State, thus recovering being connected in parallel of all power supply singles, you can exported according to current output voltage, now, each power supply list
The output voltage of body is equal or within acceptable deviation range, thus not cause substantial to each power supply single
Damage.
As shown in figure 5, in one alternate embodiment, described analysis module 12 includes：
Detector unit 121, detects the current output voltage of each power supply single；
Judging unit 122, whether the distributed area of current output voltage judging each power supply single is in predetermined standard interval model
In enclosing.
In the present embodiment, when the distributed area of the current output voltage detecting each power supply single is in predetermined standard interval model
When enclosing interior, can directly skip follow-up regulating step, directly carry out power output, effectively improve and adjust efficiency.
As shown in fig. 6, in one alternate embodiment, described designated module 13 includes：
Comparing unit 131, for the output voltage of relatively each power supply single；
Designating unit 132, for being defined as controlled plant by one power supply single of output voltage highest in each power supply single.
In the present embodiment, one power supply single of output voltage highest is set as that controlled plant is conducive to follow-up regulation
The carrying out of step.
As shown in fig. 7, in one alternate embodiment, described adjustment module 15 includes：
Computing unit 151, adjusts, according to default, the regulated quantity that rule determines the load of described controlled plant；
Adjustment unit 152, adjusts described load according to described regulated quantity, to increase the output current of controlled plant.
The regulated quantity of the load determining described controlled plant, Ran Houzai in the present embodiment, is first calculated by computing unit 151
By adjustment unit 152 according to described regulated quantity adjust described load, with and increase the output current of controlled plant, step is simply fast
Victory, effectively improves the efficiency adjusting.
The present invention equalizes the method for power sources in parallel output voltage and supply unit be applicable to including but not limited to following several
Individual aspect：
1. outdoor decoration, brightening or centralized lighting engineering；
2. stage lighting system；
3. building site centralized lighting is powered.
If the function described in the embodiment of the present invention is realized and as independent using in the form of software function module or unit
When production marketing or use, can be stored in a computing device read/write memory medium.Based on such understanding, the present invention
Partly being embodied in the form of software product of part that embodiment contributes to prior art or this technical scheme
Come, this software product is stored in a storage medium, include some instructions use so that a computing device（Can be personal
Computer, server, mobile computing device or network equipment etc.）Execution each embodiment methods described of the present invention whole or
Part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read-only storage（ROM, Read-Only Memory）、
Random access memory（RAM, Random Access Memory）, magnetic disc or CD etc. are various can be with store program codes
Medium.In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is real with other
Apply the difference of example, between each embodiment same or similar partly mutually referring to.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention limits by claims and its equivalency range.
Claims (9)
1. a kind of method of equilibrium parallel connection power supply output voltage is it is characterised in that include：
Step S11, all power supply singles in parallel are isolated from each other；
Step S12, determines the need for adjusting output voltage according to the current output voltage of all power supply singles in parallel, such as
It is to skip to step S13, such as no, skip to step S17；
Step S13 is it would be desirable to the power supply single adjusting output voltage is set to controlled plant；
Step S14, makes described controlled plant carry out firm power output；
Step S15, increases the output current of described controlled plant according to pre-defined rule, makes the current output electricity of described controlled plant
Pressure drop is low；
Step S16, the current output voltage again according to all power supply singles in parallel determines the need for adjusting output voltage,
As no, carry out step S17, in this way, skip back to the circulation of step S13 and carry out described step S13 ~ step S16；
Step S17, recovers being connected in parallel of all power supply singles, is exported according to current output voltage.
2. according to claim 1 equilibrium power sources in parallel output voltage method it is characterised in that described step S12 and
The current output voltage according to all power supply singles in parallel in step S16 determines the need for regulation output voltage and specifically wraps
Include：
Step S121, detects the current output voltage of each power supply single；
Step S122, whether the distributed area of current output voltage judging each power supply single is in predetermined standard interval range
Interior, in this way, it is defined as to carry out voltage-regulation, as no it is determined that being to need to carry out voltage-regulation.
3. the method for equilibrium power sources in parallel output voltage according to claim 1 and 2 is it is characterised in that described step S13
Middle the power supply single needing to adjust output voltage is defined as controlled plant and specifically includes：
S131, the relatively output voltage of each power supply single；
S132, one power supply single of output voltage highest in each power supply single is defined as controlled plant.
4. the method for equilibrium power sources in parallel output voltage according to claim 1 is it is characterised in that step S15 is specifically wrapped
Include：
Step S151, adjusts, according to default, the regulated quantity that rule determines the load of described controlled plant；
Step S152, adjusts described load according to described regulated quantity, to increase the output current of controlled plant.
5. a kind of supply unit of equilibrium power sources in parallel output voltage is it is characterised in that include：
Isolation module, for being isolated from each other all power supply singles in parallel；
Analysis module, for determining the need for adjusting output electricity according to the current output voltage of all power supply singles in parallel
Pressure；
Designated module, for being set to controlled plant by the power supply single needing to adjust output voltage；
Control module, is used for making described controlled plant carry out firm power output；
Adjustment module, for increasing the output current of described controlled plant according to pre-defined rule, makes the current of described controlled plant
Output voltage reduces；
Output module, for recovering being connected in parallel of all power supply singles, is exported according to current output voltage.
6. the supply unit of equilibrium power sources in parallel output voltage according to claim 5 is it is characterised in that described analysis mould
Block includes：
Detector unit, for detecting the current output voltage of each power supply single；
Judging unit, for judge each power supply single current output voltage distributed area whether in predetermined standard interval model
In enclosing.
7. the supply unit of the equilibrium power sources in parallel output voltage according to claim 5 or 6 is it is characterised in that described finger
Cover half block includes：
Comparing unit, for the output voltage of relatively each power supply single；
Designating unit, for being defined as controlled plant by one power supply single of output voltage highest in each power supply single.
8. the supply unit of equilibrium power sources in parallel output voltage according to claim 6 is it is characterised in that described regulation mould
Block includes：
Computing unit, for adjusting, according to default, the regulated quantity that rule determines the load of described controlled plant；
Adjustment unit, for adjusting described load according to described regulated quantity, to increase the output current of controlled plant.
9. the supply unit of equilibrium power sources in parallel output voltage according to claim 5 is it is characterised in that described isolation mode
Block includes the combination of one or more of following device：Diode, triode, FET or integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040586.XA CN106411111B (en) | 2016-11-11 | 2016-11-11 | Method for equalizing parallel output voltage of power supply and power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040586.XA CN106411111B (en) | 2016-11-11 | 2016-11-11 | Method for equalizing parallel output voltage of power supply and power supply device |
Publications (2)
| Publication Number | Publication Date |
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| CN106411111A true CN106411111A (en) | 2017-02-15 |
| CN106411111B CN106411111B (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390561A (en) * | 2018-03-06 | 2018-08-10 | 安徽卓越动力科技有限公司 | A kind of DC/DC DCPS digitally controlled power sources design |
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| US5513094A (en) * | 1993-11-30 | 1996-04-30 | Crown International, Inc. | Switch-mode power supply for bridged linear amplifier |
| CN1040823C (en) * | 1994-07-21 | 1998-11-18 | 三星电机株式会社 | Switch mode power supply with control of output supply voltage and overcurrent |
| CN201234205Y (en) * | 2008-07-03 | 2009-05-06 | 中兴通讯股份有限公司 | Parallel current equalizing control circuit, electric power module and electric power system constituted thereby |
| CN102324838B (en) * | 2011-04-25 | 2014-07-30 | 福建星网锐捷网络有限公司 | Current-sharing power supply voltage adjusting method and device as well as network equipment |
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2016
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| US5319536A (en) * | 1991-12-17 | 1994-06-07 | International Business Machines Corporation | Power system for parallel operation of AC/DC convertrs |
| US5513094A (en) * | 1993-11-30 | 1996-04-30 | Crown International, Inc. | Switch-mode power supply for bridged linear amplifier |
| CN1040823C (en) * | 1994-07-21 | 1998-11-18 | 三星电机株式会社 | Switch mode power supply with control of output supply voltage and overcurrent |
| CN201234205Y (en) * | 2008-07-03 | 2009-05-06 | 中兴通讯股份有限公司 | Parallel current equalizing control circuit, electric power module and electric power system constituted thereby |
| CN102324838B (en) * | 2011-04-25 | 2014-07-30 | 福建星网锐捷网络有限公司 | Current-sharing power supply voltage adjusting method and device as well as network equipment |
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| CN108390561A (en) * | 2018-03-06 | 2018-08-10 | 安徽卓越动力科技有限公司 | A kind of DC/DC DCPS digitally controlled power sources design |
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| CN106411111B (en) | 2020-06-16 |
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