CN106972617A - Power redundancy backup device applied to modularization avionics system - Google Patents
Power redundancy backup device applied to modularization avionics system Download PDFInfo
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- CN106972617A CN106972617A CN201710199074.6A CN201710199074A CN106972617A CN 106972617 A CN106972617 A CN 106972617A CN 201710199074 A CN201710199074 A CN 201710199074A CN 106972617 A CN106972617 A CN 106972617A
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- Prior art keywords
- power
- module
- input interface
- power supply
- backup device
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
Abstract
The invention discloses a kind of power redundancy backup device applied to modularization avionics system, include two power modules, several load blocks, the power module is configured as the 115VAC of input being converted to 28VDC outputs, load blocks include control chip, the control chip includes the first power input interface, second source input interface, first power input interface connects a power module, second source input interface connects another power module, control chip is configured as acquiescence and receives power supply from the first power input interface and be sent to electricity consumption module, second source input interface is switched to when the first power input interface does not receive power supply to receive power supply and be sent to electricity consumption module.The present invention is solved in modular avionics electricity system, the contradiction that the demand such as power distribution, reliability, volume of power module can not be balanced, on the basis of reliability is ensured, optimization power distribution, reduction module cumulative volume.
Description
Technical field：
The present invention is a kind of power redundancy backup device applied to modularization avionics system, more particularly in airborne exchange
Under electrical environment, multimode on single backboard, it is high-power under the conditions of power redundancy backup device.
Background technology：
Current aircraft platform mainly provides 115VAC power supplys and 28VDC, when electrical equipment power is larger, if directly using
28VDC power supplys then need electric current larger, add the burden of power-supply system, therefore, high-power electronic device be more likely to from
115VAC obtains electric energy.But 115VAC power supplys are mainly produced by high-power generator, performance Shortcomings：
1. supply frequency, voltage stability are not enough.
2. have of short duration power down in generator active-standby switch.
Therefore, high-power avionics system use during 115VAC power supplys, it is necessary to special power module complete Power convert, it is steady
The work such as pressure, power down maintenance.
On the other hand, the power supply of avionic device needs to have redundancy structure, to improve security.Traditional method is usual
Failure tolerant degree (such as Fig. 2) is provided using multiple power supply changeover devices redundancy structure in parallel, in order to avoid reverse current, in mould
With diode-isolated between block and loading bus.
As avionic device develops towards comprehensively modularized direction, the integrated level lifting of equipment, the work(of single chassis
Energy, power have significant increase, and now traditional method faces following challenge：
(1), radiating pressure high to device performance requirements is big.Redundant power by diodes in parallel to loading bus, due to
Number of devices is more, and general power is big, and the only way which must be passed exported as power supply is also very high to the performance requirement of diode.Meanwhile, pass through
High current can cause diode caloric value high, and serious radiating pressure is produced in comprehensively modularized equipment.
(2) default allocation can not be carried out to each power module power.Because power module is total with parallel way access load
Line, each modular power is by device autobalance, but the inconsistency of module can cause the uncontrollable of power distribution.Serious conditions
Under, partial power module may be caused to be damaged because permanent load is overweight.
(3) there is single point failure risk.Module is all hung on a loading bus, if this loading bus goes wrong,
Then all devices can not all work.
(4) a large amount of electric capacity of power down maintenance function needs are completed, and the electric capacity of main power source and stand-by power supply is independent, takes body
Product is excessive.
The content of the invention：
The goal of the invention of the present invention is to provide a kind of power redundancy backup device applied to modularization avionics system, solution
Certainly in Modular Avionics arrangement, the contradiction that the demand such as power module power distribution, reliability, volume can not be balanced is being protected
Demonstrate,prove on the basis of reliability, optimize power distribution, reduce module cumulative volume.
The goal of the invention of the present invention is achieved through the following technical solutions：
A kind of power redundancy backup device applied to modularization avionics system, comprising two power modules, several bear
Module is carried, the power module is configured as the 115VAC of input being converted to 28VDC outputs, and load blocks include control core
Piece, the control chip includes the first power input interface, second source input interface, and the first power input interface connects one
Power module, second source input interface connects another power module, and it is defeated from the first power supply that control chip is configured as acquiescence
Incoming interface receives power supply and is sent to electricity consumption module, and second source is switched to when the first power input interface does not receive power supply
Input interface receives power supply and is sent to electricity consumption module.
According to features described above, any power module is connected in parallel the first power input interface of fractional load module,
It is connected in parallel the second source input interface of remaining load module.
According to features described above, the power module includes the boost module and voltage reduction module of series connection, and the boost module is used
In the 115VAC of input is converted into 270VDC, the voltage reduction module, which is used to 270VDC being converted to 28VDC to export, gives load mould
Block.
According to features described above, described power redundancy backup device is also maintained comprising the power down in parallel with two power modules
Electric capacity, the power module is additionally configured to when not receiving 115VAC, and power supply is obtained from power down maintenance electric capacity.
Use above power redundancy backup device, when equipment normal work, each power module mean allocation power, this
When each electricity consumption module load it is impartial, heat production disperses, and the loss of device is smaller.
When some power module fails, the power supply+28V of the power module output of the failure is reduced to 0, and acquiescence uses this electricity
Source module will detect the change of voltage as the load blocks of main power source, thus switch to using on standby power module.
When external power source switching, during 115V short time power down, power module obtains electric energy from power down maintenance electric capacity, in short-term
Between maintenance+28V it is stable, so as to shield the problem of external power source switching is brought.
Brief description of the drawings:
Fig. 1 is the structural representation of the power redundancy backup device described in embodiment；
Fig. 2 is the structural representation of conventional power source redundancy backup apparatus, the topology of the same power bus of electrical equipment carry
Structure；
Fig. 3 is the power module structure described in embodiment；
Fig. 4 is the load blocks power connecting method described in embodiment.
Embodiment：
Come to carry out the present invention detailed discussion below in conjunction with specific embodiment and accompanying drawing.Fig. 1 is with 1:Exemplified by 1 backup,
Applied to the power redundancy backup device of modularization avionics system, two power modules, several load blocks, power supply mould are included
Block is configured as the 115VAC of input being converted to 28VDC outputs, and load blocks include control chip, and control chip includes first
Power input interface, second source input interface, the first power input interface connect a power module, and second source input connects
Mouth connects another power module, and control chip is configured as acquiescence and receives power supply from the first power input interface and be sent to use
Electric module, second source input interface is switched to when the first power input interface does not receive power supply and receives power supply and is sent to
Electricity consumption module.
For example and without limitation, power module can use two level conversions (such as Fig. 3), include boost module and decompression mould
The 115VAC all the way of input is changed 270VDC by three-phase commutation bridge and sends into voltage reduction module by block, boost module, and voltage reduction module leads to
Cross DC-DC converter and 270VDC is converted into 28VDC.Power down maintenance electric capacity, which is connected in parallel between boost module and voltage reduction module, to be passed through
Interface is drawn, outside public with all power modules.When system power failure, voltage reduction module obtains electricity from power down maintenance electric capacity
Can, work on, until the input of voltage reduction module is less than minimum operating voltage Vmin, because power down maintains capacitance and voltage
Difference square is inversely proportional, and the medium voltage 270V produced using boost module is higher, help to reduce the capacitance needed.Its
Outside, power down maintains electric capacity to be composed in parallel by multiple electric capacity, and reliability is higher.
For example and without limitation, Fig. 4 gives the ginseng of the load blocks based on Linear companies LTC4416 control chips
Examine structural representation.In the reference scheme, V1 is main power input voltage, and V2 is stand-by power supply input voltage.V1 is through resistance point
There is provided after pressure and enable signal.Work as V1=28V, E1 ＞ Vref [1], passage 1 is enabled, G1 drivings Q1, Q2 is open-minded, Vout=V1=
28V, nowInput high level is invalid, and passage 2 is closed；When the minimum permission voltage Vinmin [2] of V1 ＜, E1 ＜
Vref, input low level is invalid, and Q1, Q2 are turned off, and V1 no longer powers to Vout, and now It is enabled,
Q3, Q4 are turned on, Vout=V2=28V.Power supply main standby selection and combining can so be completed.
The use process of power redundancy backup device is as follows：
Step 1) electronic equipment general power, each electricity consumption modular power are counted, and electricity consumption module is classified.Used according to each
The function of electric module and the degree of correlation of aircraft safety, are divided into important class and general class by the classification of electricity consumption module.
Step 2) according to security, reliability requirement, determine power, the redundant power of each electricity consumption module.
Step 3) load blocks are configured for each electricity consumption module, according to the classification and power of electricity consumption module, load mould
First power input interface of block connects suitable power module as main power source, and the second source input interface of load blocks is another
One suitable power module of outer connection is used as backup battery.As shown in fig. 1, for load blocks 1 --- for N, it is led
Power supply is supplied by power module 1, and backup battery is supplied by power module 2, for load blocks N+1 --- for 2N, its main electricity
Source is supplied by power module 2, and backup battery is supplied by power module 2.When there is power-fail, load blocks can be led automatically
Standby switching.Main power supply selection, combining are realized in load blocks, relative to the structure (Fig. 2) of conventional power source redundancy, new method
Advantage be：1. no longer need diode-isolated, it is therefore prevented that electric energy loss is big on the diode when electric current is larger, heat production is big
Problem.2. being assigned with default power source for each load blocks, be conducive to mean allocation and the control of power.
Step 4), power module can normally receive 115VAC, 115VAC is converted to 270VDC feeding drops by boost module
Die block and power down maintain electric capacity, and 270VDC is converted to 28VDC and exported by voltage reduction module.Load blocks acquiescence is defeated from the first power supply
Incoming interface receives power supply.
Step 5), when external power source switching, during 115V short time power down, power module from power down maintain electric capacity in obtain electricity
Can, short time maintenance+28V is stable, so as to shield the problem of external power source switching is brought., should when some power module fails
Main power source+the 28V and stand-by power supply+28V of power module output are reduced to 0, and acquiescence uses the of the load blocks of this road power supply
One power input interface detects the change of voltage, and stand-by power supply is received by second source input interface so as to switch to.
The advantage that the present embodiment carries out main power supply switching in load blocks is to be electricity consumption module assignment acquiescence
Using power supply, while power sense circuit nargin is larger, effectively it can prevent power supply from switching repeatedly.
It is described above, it is example of the present invention, but the method is not limited to 1:The situation of 1 power supply backup.
Relative to traditional method, the present invention is done while power redundancy backup is completed for high-power and modular Aerial Electronic Equipment
Design so that each power module power output balance, possess power down and maintain function and electric capacity small volume, can effectively prevent electricity
Source switches repeatedly.
Claims (4)
1. a kind of power redundancy backup device applied to modularization avionics system, includes two power modules, several loads
Module, it is characterised in that the power module is configured as the 115VAC of input being converted to 28VDC outputs, and load blocks are included
Control chip, the control chip includes the first power input interface, second source input interface, and the first power input interface connects
A power module is connect, second source input interface connects another power module, and control chip is configured as acquiescence from first
Power input interface receives power supply and is simultaneously sent to electricity consumption module, and the is switched to when the first power input interface does not receive power supply
Two power input interfaces receive power supply and are sent to electricity consumption module.
2. power redundancy backup device according to claim 1, it is characterised in that any power module is connected in parallel
First power input interface of fractional load module, is connected in parallel the second source input interface of remaining load module.
3. power redundancy backup device according to claim 1, it is characterised in that the power module includes the liter of series connection
Die block and voltage reduction module, the boost module are used to the 115VAC of input being converted to 270VDC, and the voltage reduction module is used for
270VDC is converted into 28VDC to export to load blocks.
4. power redundancy backup device according to claim 1, it is characterised in that also comprising in parallel with two power modules
Power down maintain electric capacity, the power module is additionally configured to when not receiving 115VAC, from power down maintain electric capacity in obtain
Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710199074.6A CN106972617A (en) | 2017-03-29 | 2017-03-29 | Power redundancy backup device applied to modularization avionics system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710199074.6A CN106972617A (en) | 2017-03-29 | 2017-03-29 | Power redundancy backup device applied to modularization avionics system |
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| CN106972617A true CN106972617A (en) | 2017-07-21 |
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| CN201710199074.6A Pending CN106972617A (en) | 2017-03-29 | 2017-03-29 | Power redundancy backup device applied to modularization avionics system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818407A (en) * | 2019-03-28 | 2019-05-28 | 江苏核电有限公司 | A kind of nuclear power plant's fire water pump house control system instrument redundant power supply apparatus |
| CN113725846A (en) * | 2020-05-26 | 2021-11-30 | 北京广利核系统工程有限公司 | Direct-current redundant power supply system |
| CN114488888A (en) * | 2022-01-14 | 2022-05-13 | 上海卫星工程研究所 | Spaceborne single-machine dual-redundancy high-reliability power supply based on SpaceVPX framework |
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| CN204858728U (en) * | 2015-08-10 | 2015-12-09 | 常熟开关制造有限公司(原常熟开关厂） | Two power supply automatic switching devices, dual power supply system |
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| US20080024011A1 (en) * | 2006-07-07 | 2008-01-31 | Zippy Technology Corp. | Composite backup-type power supply system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818407A (en) * | 2019-03-28 | 2019-05-28 | 江苏核电有限公司 | A kind of nuclear power plant's fire water pump house control system instrument redundant power supply apparatus |
| CN113725846A (en) * | 2020-05-26 | 2021-11-30 | 北京广利核系统工程有限公司 | Direct-current redundant power supply system |
| CN114488888A (en) * | 2022-01-14 | 2022-05-13 | 上海卫星工程研究所 | Spaceborne single-machine dual-redundancy high-reliability power supply based on SpaceVPX framework |
| CN114488888B (en) * | 2022-01-14 | 2024-01-30 | 上海卫星工程研究所 | spaceVPX architecture-based satellite-borne stand-alone dual-redundancy high-reliability power supply |
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Application publication date: 20170721 |
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