CN104767276B - A kind of redundancy accessory power supply control system and its control method - Google Patents
A kind of redundancy accessory power supply control system and its control method Download PDFInfo
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Abstract
The present invention provides a kind of redundancy accessory power supply control system and its control method, and the system includes N groups accessory power supply and accessory power supply control unit；Accessory power supply is controlled by accessory power supply control unit；N groups accessory power supply is in parallel；Every group of accessory power supply includes feedback unit, DC/DC conversion modules, IC control units and temperature sampling unit；Temperature sampling unit is sampled to the temperature of the DC/DC conversion modules, and the temperature that sampling is obtained is sent to accessory power supply control unit；IC control units are used to control DC/DC conversion modules；Output signal is fed back to the IC control units by DC/DC conversion modules by the feedback unit.Sampling is monitored to accessory power supply by temperature sampling unit, and timing is operated to it by a timer, when higher or accessory power supply work timing is arrived in accessory power supply temperature, working power is switched to another set accessory power supply as early as possible, its temperature rise pressure is eased.
Description
Technical field
The present invention relates to a kind of power circuit technology, and in particular to a kind of redundancy accessory power supply control system and method.
Background technology
The accessory power supply design of UPS power supply units is usually taken by flyback sourse one group of isolation of generation in the prior art
Voltage source, such as+24V/0V or+15V/0V, then by these Power converts into the isolation of some other voltage class or
Non-isolated power supply supply UPS equipment inside is used as accessory power supply, in order to ensure the stability of voltage, generally pass through+24V or
Person+15V is used as Voltage Feedback.
For some high power UPS power supply units, in order to ensure the reliability of power supply, the accessory power supply of device interior is usual
Using supplying power with double circuit, 2 groups of identical secondary power systems, after output by diode it is mutually isolated after be parallel to together, now
Power supply after parallel connection still+24V/0V or+15V/0V, then by these Power converts into the isolation of some other voltage class or
Used inside person's non-isolated power supply supply UPS equipment as accessory power supply, can so substantially reduce the damage that power failure is brought
Evil, Fig. 1 is the schematic diagram of 2 road power sources in parallel in the prior art, and Fig. 2 is traditional redundancy secondary power system Voltage Feedback list
Member.
But so use can have Railway Project, we are by taking+24V/0V as an example, because feedback network parameter discrete type
Influence and the influence of isolating diode tube voltage drop, can not can guarantee that 2 groups of power supplys averraged, must be by one group of power supply when using
Power supply, another set power supply inactivity output, the aging of such that group of power supply of continuous firing can accelerate, and no matter environment temperature is more
Height, is mostly to have its own undertaking more than power output, after can not only being worked after its damage, another set power supply is just put into
Use.So damage the working life of accessory power supply.
The content of the invention
For existing UPS technological deficiency, in order to ensure the reliability of power supply, the present invention provides a kind of redundancy accessory power supply
Control system and method.Allow the periodically alternation of multigroup accessory power supply, slow down the aging speed of power device, increasing it makes
Use the life-span；If working power temperature rise ratio is higher, it is switched to another set power supply, alleviate temperature rise pressure.
The present invention is realized using following technical scheme：Including N groups accessory power supply and accessory power supply control unit；The N groups
Accessory power supply is controlled by the accessory power supply control unit；The N groups accessory power supply is in parallel；N is natural number；Every group of accessory power supply
Include feedback unit, DC/DC modules, IC control units and temperature sampling unit；The temperature sampling unit is to the DC/DC
The temperature of module is sampled, and by the temperature feedback of sampling to the accessory power supply control unit；The IC control units are used
In the control DC/DC modules；The output of the DC/DC modules feeds back to the IC control units through the feedback unit；Institute
Stating accessory power supply control unit includes work timing module, temperature comparison module and power supply handover module；The work timing mould
Block is operated timing to the auxiliary power module of work, and timing result is sent into the power supply handover module；The temperature
Spend comparison module and monitoring temperature is carried out to N groups accessory power supply, and monitoring temperature result is sent to the power supply handover module；Institute
Power supply handover module is stated to be judged to receiving signal and switch over N group accessory power supplys.
Further, the DC/DC modules are inverse-excitation converting circuit.
In an embodiment of the present invention, the feedback unit includes current feedback unit and voltage adjustment feedback unit；Institute
Current feedback unit is stated to sample to the control electric current of DC/DC modules by a current sampling unit, and by the electric current of sampling
Feed back to IC control units；Voltage adjustment feedback unit is sampled to the output voltage of DC/DC modules and feeds back to IC
Control unit.
In an embodiment of the present invention, voltage adjustment feedback unit include a triode, photoelectrical coupler, three ends can
Adjust shunt reference source, the first to the 6th resistance, the first electric capacity and the second electric capacity；The base stage of the triode connects the accessory power supply
Control unit, the colelctor electrode of triode connects the 6th resistance one end；The emitter stage of one termination triode of the 5th resistance, the 5th resistance
The resistance other end of another termination the 6th；The voltage output of the DC/DC modules is respectively through second resistance and 3rd resistor and the
The two ends connection of two electric capacity, the first electric capacity is in parallel with the second electric capacity with after the 4th resistant series；One termination of second electric capacity
The K ends of three end adjustable shunt reference sources, the other end of the resistance of another termination the 5th of second electric capacity；The emitter stage of triode
Connect the A ends of three end adjustable shunt reference source, the R of another termination three ends adjustable shunt reference source of the 5th resistance
End；The voltage output of the DC/DC modules connects the transmitting tube anode of the photoelectrical coupler；The transmitting tube cathode of photoelectrical coupler
Connect the K ends of three end adjustable shunt reference source；The colelctor electrode of the photoelectrical coupler reception pipe connects IC control units, the light
Emitter stage one end of electric coupler reception pipe connects accessory power supply input negative pole through first resistor.
In an embodiment of the present invention, the N is 2.
The present invention also provides a kind of control method of above-mentioned redundancy accessory power supply control system, it is characterised in that：Including
Following steps:Step S01：First group of accessory power supply is used as working power；Step S02：The temperature comparison module is preset
One temperature threshold, the work timing module presets a work timing；Work is carried out to working power by work timing module
Make timing, temperature sampling unit is sampled to the temperature of working power, and the temperature signal of sampling is sent into the temperature
Comparison module；Step S03：If the temperature of the working power exceedes temperature threshold, the power supply handover module control system is cut
N-th group accessory power supply is changed to, goes to step S05, n to be less than or equal to N natural number more than 1；Step S04：If the work electricity
Source temperature is not less than threshold value, and the work timing module reaches work timing to working power work timing；The power supply switching
Module is switched to n-th group accessory power supply, goes to step S05；Step S05：Using n-th group accessory power supply as working power, and turn
To step S02.
In an embodiment of the present invention, the N is 2.
The present invention carries out temperature sampling to accessory power supply by temperature sampling unit compared with prior art, and counted by a job
When module timing is operated to it, when higher or accessory power supply work timing is arrived in accessory power supply temperature, working power is as early as possible
Another set accessory power supply is switched to, its temperature rise pressure is eased.Multigroup auxiliary electricity is made using technical scheme
Source can periodically alternation, slow down the aging speed of power device, increase its service life.
Brief description of the drawings
Fig. 1 is traditional redundancy secondary power system.
Fig. 2 is traditional redundancy secondary power system voltage feedback unit.
Fig. 3 is the theory diagram of the redundancy secondary power system of the present invention.
Fig. 4 is the redundancy secondary power system Voltage Feedback adjustment unit structural representation of the specific embodiment of the invention.
Fig. 5 is the structural representation of the redundancy secondary power system of the specific embodiment of the invention.
Fig. 6 is accessory power supply control system switch operating theory diagram provided in an embodiment of the present invention.
Fig. 7 is redundancy secondary power system control method provided in an embodiment of the present invention.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention provides a kind of redundancy accessory power supply control system, it is characterised in that:Including N groups accessory power supply and auxiliary electricity
Source control unit；The N groups accessory power supply is controlled by the accessory power supply control unit；The N groups accessory power supply is in parallel；N is
Natural number；Every group of accessory power supply includes feedback unit, DC/DC modules, IC control units and temperature sampling unit；The temperature
Sampling unit is sampled to the temperature of the DC/DC conversion modules, and the obtained temperature feedback that will sample is electric to the auxiliary
Source control unit；The IC control units are used to control the DC/DC modules；The output of DC/DC modules one passes through the feedback
Member feeds back to the IC control units；The accessory power supply control unit includes work timing module, temperature comparison module and electricity
Source handover module；The work timing module is operated timing to the auxiliary power module of work, and timing result is transmitted
To the power supply handover module；The temperature comparison module carries out monitoring temperature to N groups accessory power supply, and by monitoring temperature result
It is sent to the power supply handover module；The power supply handover module is judged to receiving signal and N group accessory power supplys is entered
Row switching.Its theory diagram is referring specifically to Fig. 3.
Further, the DC/DC modules are inverse-excitation converting circuit.
In an embodiment of the present invention, the feedback unit includes current feedback unit and voltage adjustment feedback unit；Institute
Current feedback unit is stated to sample to the control electric current of DC/DC modules by a current sampling unit, and by the electric current of sampling
Feed back to IC control units；Voltage adjustment feedback unit is sampled to the output voltage of DC/DC modules and feeds back to IC
Control unit.
In one embodiment of the invention, the voltage adjustment feedback unit includes a triode, photoelectrical coupler, three ends are adjustable
Shunt reference source, the first to the 6th resistance, the first electric capacity and the second electric capacity；The base stage of the triode connects the accessory power supply control
Unit processed, the colelctor electrode of triode connects the 6th resistance one end；The emitter stage of one termination triode of the 5th resistance, the 5th resistance
The 6th resistance other end of another termination；The voltage output of the DC/DC modules is respectively through second resistance and 3rd resistor and second
The two ends connection of electric capacity, the first electric capacity is in parallel with the second electric capacity with after the 4th resistant series；One termination three of second electric capacity
Hold the K ends of adjustable shunt reference source, the other end of the resistance of another termination the 5th of second electric capacity；The emitter stage of triode connects
The A ends of three end adjustable shunt reference source, the R ends of another termination three ends adjustable shunt reference source of the 5th resistance；
The voltage output of the DC/DC modules connects the transmitting tube anode of the photoelectrical coupler；The transmitting tube cathode of photoelectrical coupler connects
The K ends of three end adjustable shunt reference source；The colelctor electrode of the photoelectrical coupler reception pipe connects IC control units, the photoelectricity
Emitter stage one end of coupler reception pipe connects accessory power supply input negative pole through first resistor.
It is preferred that, the TL431 that three end adjustable shunt reference sources can be released from Texas Instruments.
Preferably, the N is 2.
In a specific embodiment of the invention, the redundancy secondary power system includes 2 groups of accessory power supplys, structural representation
Referring to Fig. 5, Voltage Feedback adjustment unit structural representation is referring to Fig. 4.If 2 groups of power works of A groups and B groups, A groups power supply produces V1
+/V0- power supplys, B groups power supply produces V2+/V0- power supplys.Original operating state arranges A group power works, if to ensure A groups electricity
Source works, it is necessary to make V1+ be more than V2+, can just make V0+=V1+, now can by adjusting the feedback parameter of A groups and B group power supplys,
Disconnect the triode Q1 of A group supply voltage feedback adjustment units.When the Voltage Feedback adjustment unit Q1 of A group power supplys disconnects, A
Partial pressure after R5 and the R3 series connection of group Voltage Feedback adjustment unit, is in the triode Q1 of B group supply voltage feedback adjustment units
On-state.When B group power supplys Q1 is turned on, series connection partial pressure is carried out with R3 again after the R5 and R6 of B group Voltage Feedback adjustment units are in parallel, by
Parameter after R5 and R6 is in parallel is necessarily less than R5 parameter, so that the V2+ that B groups power supply is produced is produced less than A groups power supply
Power supply V1+, it is ensured that V0+=V1+ of output.After A groups power supply is started working, work timing module A group power work timing is opened
Begin；If the timing of A groups power work has been arrived, it is necessary to be switched to B group power works, need the Voltage Feedback of A group power supplys first
The triode Q1 of adjustment unit is in on-state, is then again in the triode Q1 of the Voltage Feedback adjustment unit of B group power supplys and breaks
State, is now more than V1+, it is ensured that V0+=V2+ of output by the regulation V2+ of Voltage Feedback adjustment unit, completes A groups and B groups electricity
The switching in source.If in A group Power Operating Process, because environment temperature is too high or it is larger to load, causing A group power supply apparatus
Temperature is higher, reaches threshold temperature, can now be switched to B group power supplys, alleviates the temperature rise pressure of A group power supplys, in B group power supply works
When making, A group power supplys are rested, and device temperature lowers.
The accessory power supply control unit includes work timing module, temperature comparison module and power supply handover module, power supply
Handover module operation principle block diagram is referring to Fig. 6.Temperature of the work of power supply handover module based on power supply and work timing.
The present invention also provides a kind of control method based on above-mentioned redundancy accessory power supply control system, it is characterised in that：
Step S01：First group of accessory power supply is used as working power；Step S02：The temperature comparison module presets a temperature threshold
Value, the work timing module presets a work timing；Timing is operated to working power by work timing module, temperature
Degree sampling unit is sampled to the temperature of working power, and the temperature signal sampled is sent to the temperature comparison module；Step
Rapid S02：If the temperature of the working power exceedes temperature threshold, it is auxiliary that the power supply handover module control system is switched to n-th group
Power supply is helped, goes to step S05, n to be less than or equal to N natural number more than 1；Step S03：If the working power temperature not less than
Threshold value, the work timing module reaches work timing to working power work timing；The power supply handover module is switched to n-th
Group accessory power supply, goes to step S05；Step S05：Using n-th group accessory power supply as working power, and go to step S02.
In a specific embodiment of the invention, including two groups of accessory power supplys of A groups power supply and B groups power supply, control method includes
Following steps：Step (1)：A groups accessory power supply is as working power, and temperature comparison module presets a temperature threshold T, work
Timing module presets a work timing t, and timing, temperature sampling are operated to A group accessory power supplys by work timing module
Unit is sampled to the temperature of A group accessory power supplys, and the temperature signal of sampling is sent into the temperature comparison module；Step
(2)：If A group accessory power supplys temperature exceedes temperature threshold T, power supply handover module is switched to B group accessory power supplys, goes to step (4)；
Step (3)：If A group accessory power supply temperature is arrived not less than temperature threshold T, work timing module to the work timing of A groups accessory power supply
Up to work timing t, the power supply handover module is switched to B group accessory power supplys, goes to step (4)；Step (4)：By work timing
Module is operated timing to B group accessory power supplys, and temperature sampling unit is sampled to the temperature of B group accessory power supplys, and is sampled
Temperature signal be sent to the temperature comparison module；Step (5)：If B groups accessory power supply exceedes temperature threshold T, the power supply
Handover module is switched to A group accessory power supplys, goes to step (1)；Step（6）：If B groups accessory power supply is not less than temperature threshold T, institute
State work timing module and work timing t is reached to the work timing of B groups accessory power supply, it is auxiliary that the power supply handover module is switched to A groups
Power supply is helped, step is gone to（1）.Particular flow sheet is referring to Fig. 7.
Sampling is monitored to accessory power supply by temperature sampling unit using technical scheme, and counted by a job
When module timing is operated to it, when higher or accessory power supply work timing is arrived in accessory power supply temperature, working power is as early as possible
Another set accessory power supply is switched to, its temperature rise pressure is eased.Multigroup auxiliary electricity is made using technical scheme
Source can periodically alternation, slow down the aging speed of power device, increase its service life.
Those skilled in the art can do on the premise of the principle and essence without prejudice to the present invention to this specific embodiment
Go out various modifications or supplement or substituted using similar mode, but these changes each fall within protection scope of the present invention.Cause
This technology of the present invention scope is not limited to above-described embodiment.
Claims (5)
1. a kind of redundancy accessory power supply control system, it is characterised in that:Including N groups accessory power supply and accessory power supply control unit；
The N groups accessory power supply is controlled by the accessory power supply control unit；The N groups accessory power supply is in parallel；N is natural number；
Every group of accessory power supply includes feedback unit, DC/DC modules, IC control units and temperature sampling unit；
The temperature sampling unit is sampled to the temperature of the DC/DC modules, and by the temperature feedback of sampling to described auxiliary
Help power control unit；
The IC control units are used to control the DC/DC modules；The output of the DC/DC modules is fed back through the feedback unit
To the IC control units；
The accessory power supply control unit includes work timing module, temperature comparison module and power supply handover module；The work
Timing module is operated timing to the auxiliary power module of work, and timing result is sent into the power supply handover module；
The temperature comparison module carries out monitoring temperature to N groups accessory power supply, and monitoring temperature result is sent into the power supply switching
Module；The power supply handover module is judged to receiving signal and N group accessory power supplys is switched over；
The feedback unit includes current feedback unit and voltage adjustment feedback unit；The current feedback unit passes through an electric current
Sampling unit is sampled to the control electric current of DC/DC modules, and by the current feedback of sampling to IC control units；The voltage
Adjustment feedback unit is sampled to the output voltage of DC/DC modules and feeds back to IC control units；
The voltage adjustment feedback unit includes a triode, photoelectrical coupler, three end adjustable shunt reference sources, first to the 6th
Resistance, the first electric capacity and the second electric capacity；
The base stage of the triode connects the accessory power supply control unit, and the colelctor electrode of triode connects the 6th resistance one end；5th
The emitter stage of one termination triode of resistance, the resistance other end of another termination the 6th of the 5th resistance；
The voltage output of the DC/DC modules is connected through second resistance and 3rd resistor with the two ends of the second electric capacity respectively, and first
Electric capacity is in parallel with the second electric capacity with after the 4th resistant series；
The K ends of one three end adjustable shunt reference sources of termination of second electric capacity, the electricity of another termination the 5th of second electric capacity
The other end of resistance；
The emitter stage of triode connects the A ends of three end adjustable shunt reference source, another termination three end of the 5th resistance
The R ends of adjustable shunt reference source；
The voltage output of the DC/DC modules connects the transmitting tube anode of the photoelectrical coupler；The transmitting tube of photoelectrical coupler is cloudy
Pole connects the K ends of three end adjustable shunt reference source；The colelctor electrode of the photoelectrical coupler reception pipe connects IC control units, described
Emitter stage one end of photoelectrical coupler reception pipe connects accessory power supply input negative pole through first resistor.
2. redundancy accessory power supply control system according to claim 1, it is characterised in that：The DC/DC modules are flyback
Translation circuit.
3. redundancy accessory power supply control system according to claim 1, it is characterised in that：The N is 2.
4. a kind of control method of the redundancy accessory power supply control system based on described in claim 1, it is characterised in that：Including with
Lower step:
Step S01：First group of accessory power supply is used as working power；
Step S02：The temperature comparison module presets a temperature threshold, and the work timing module presets a job
Regularly；Timing is operated to working power by work timing module, temperature sampling unit is adopted to the temperature of working power
Sample, and the temperature signal of sampling is sent to the temperature comparison module；
Step S03：If the temperature of the working power exceedes temperature threshold, the power supply handover module control system is switched to the
N group accessory power supplys, go to step S05, n to be less than or equal to N natural number more than 1；
Step S04：If the working power temperature is not less than threshold value, the work timing module reaches to working power work timing
To work timing；The power supply handover module is switched to n-th group accessory power supply, goes to step S05；
Step S05：Using n-th group accessory power supply as working power, and go to step S02.
5. redundancy accessory power supply control method according to claim 4, it is characterised in that：The N is 2.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105005007B (en) * | 2015-08-11 | 2017-11-10 | 漳州科华技术有限责任公司 | A kind of redundancy secondary power system failure detector and method |
| EP3336624B1 (en) * | 2016-12-19 | 2019-02-06 | Siemens Aktiengesellschaft | Arrangement with two redundant boards which monitor each other |
| CN108037677B (en) * | 2017-11-30 | 2020-12-18 | 中国科学院国家天文台南京天文光学技术研究所 | Latent fault self-healing semi-physical simulation platform for Antarctic astronomical telescope |
| CN110838756A (en) * | 2019-11-04 | 2020-02-25 | 成都仙德科技有限公司 | Automatic power supply switching method for portable sound energy air conditioner |
| CN113410898B (en) * | 2021-08-20 | 2021-11-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Power supply system of bidirectional inverter charger |
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Effective date of registration: 20211009 Address after: 363000 No. 11, Jinxing Road, Xiangcheng District, Zhangzhou City, Fujian Province Patentee after: Zhangzhou Kehua Electric Technology Co.,Ltd. Address before: 363000 Zhangzhou Kehua Technology Co., Ltd., Beidou Industrial Park, Jinfeng Industrial Zone, Zhangzhou City, Fujian Province Patentee before: ZHANGZHOU KEHUA TECHNOLOGY Co.,Ltd. |