CN117040097A - Dual-input cold backup redundant power supply control method - Google Patents
Dual-input cold backup redundant power supply control method Download PDFInfo
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- CN117040097A CN117040097A CN202310869148.8A CN202310869148A CN117040097A CN 117040097 A CN117040097 A CN 117040097A CN 202310869148 A CN202310869148 A CN 202310869148A CN 117040097 A CN117040097 A CN 117040097A
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- power supply
- supply unit
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- input
- management circuit
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000009977 dual effect Effects 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Sources (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The application provides a double-input cold backup redundant power supply control method, which comprises the following steps: when any module in the first power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a first control signal to the backup switching circuit, the backup switching circuit turns on the first switching tube and the second switching tube after receiving the first control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the first power supply unit, the backup power supply module and the second power supply unit to realize full power conversion; compared with the prior art, the application has the beneficial effects that: the dual-input backup switching circuit is controlled by detecting fault information in the dual-input power supply unit, so that the backup power supply module is switched into the fault power supply unit as required, system power is supplemented, redundant power supply is realized, meanwhile, the input power supply fault information is monitored, and the load works in a derating mode according to the fault signal.
Description
Technical Field
The application relates to the technical field of power electronics and electricians, in particular to a double-input cold backup redundant power supply control method.
Background
With the increase of load demand power, the input single-circuit power supply cannot meet the power demand, so the input adopts double-input power supply to expand the power capacity, but the double inputs cannot be directly used in parallel. In a high-power supply system, power conversion is realized by connecting standard-size power supply modules in parallel, and meanwhile, in a high-reliability application scene, one power supply module with the same function is often prepared to realize 'N+1' redundancy backup. In the current common backup mode, there are a hot backup mode and a cold backup mode, in a dual-input power supply scene, the hot backup needs to convert and connect two paths of input in parallel and then send the two paths of input to a plurality of power supply modules for redundant power supply. At present, the cold backup is to connect 1 standard module in parallel to N standard modules of a single input, so that 2 standard modules are needed for two inputs, and the weight and cost of a larger system are increased. In the double-input occasion, a backup scheme is adopted, wherein one path of input provides power and the other path does not intervene in a system during normal operation; when one input fails, the other is intervening in the system to provide corresponding power, but is not suitable for occasions where both inputs need to provide power.
The existing solving measures can realize backup redundant power supply, but the weight and the cost of the system are greatly increased.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a dual-input cold-backup redundant power supply control method to achieve the purpose of achieving high-reliability backup redundant power supply of the system.
The embodiment of the specification provides the following technical scheme: a dual-input cold-backup redundant power supply control method comprises the following steps: when any module in the first power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a first control signal to the backup switching circuit, the backup switching circuit turns on the first switching tube and the second switching tube after receiving the first control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the first power supply unit, the backup power supply module and the second power supply unit to realize full power conversion; when any module in the second power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a second control signal to the backup switching circuit, the backup switching circuit turns on the third switching tube and the fourth switching tube after receiving the second control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the second power supply unit, the backup power supply module and the first power supply unit to realize full power conversion.
Further, the dual-input cold-backup redundant power supply control method further comprises the following steps: when the first input fails and no input is generated, the management circuit detects the first input failure, meanwhile, the second power supply unit reports an overcurrent failure to the management circuit, and the management circuit enables the first power supply unit and the second power supply unit to be turned off; the management circuit enables the second power supply unit after sending a power-reducing work instruction to the load, and simultaneously enables the power of the load to be lower than the rated power of the second power supply unit.
Further, the dual-input cold-backup redundant power supply control method further comprises the following steps: when the second input fails and no input is generated, the management circuit detects the second input failure, meanwhile, the first power supply unit reports an overcurrent failure to the management circuit, and the management circuit enables the first power supply unit and the second power supply unit to be turned off; the management circuit enables the first power supply unit after sending a power-reducing work instruction to the load, and simultaneously enables the power of the load to be lower than the rated power of the first power supply unit.
Further, dead zones are set for the second switching tube and the fourth switching tube in the backup switching circuit so as to avoid the first input and the second input from being directly connected.
Further, when the second switching tube or the fourth switching tube in the backup switching circuit has a through fault, the first input and the second input are directly connected and generate reverse current, and when the backup switching circuit detects the reverse current, the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are simultaneously closed.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least: the dual-input backup switching circuit is controlled by detecting the fault information in the dual-input power supply unit, so that the backup power supply module is switched into the fault power supply unit as required, the system power is supplemented, redundant power supply is realized, the input power supply fault information is monitored, a signal is sent to a load in real time, and the load works in derating mode according to the fault signal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic system diagram of an embodiment of the present application;
fig. 2 is a schematic diagram of a backup switching circuit according to an embodiment of the application.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1, an embodiment of the present application provides a dual-input cold-backup redundant power supply control method, including:
when any module in the first power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a first control signal to the backup switching circuit, the backup switching circuit turns on the first switching tube and the second switching tube after receiving the first control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the first power supply unit, the backup power supply module and the second power supply unit to realize full power conversion;
when any module in the second power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a second control signal to the backup switching circuit, the backup switching circuit turns on the third switching tube and the fourth switching tube after receiving the second control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the second power supply unit, the backup power supply module and the first power supply unit to realize full power conversion.
The dual-input backup switching circuit is controlled by detecting the fault information in the dual-input power supply unit, so that the backup power supply module is switched into the fault power supply unit as required, the system power is supplemented, redundant power supply is realized, the input power supply fault information is monitored, a signal is sent to a load in real time, and the load works in derating mode according to the fault signal. By the health monitoring, backup power supply module and backup switching circuit, the redundant power supply of the system backup and the load derating work when the single-way fault is input are realized by smaller weight, and the reliability and redundancy capacity of the system are improved.
The first power supply unit and the second power supply unit design corresponding power supply modules to conduct parallel current sharing output according to input and output voltage and power requirements. The first power supply unit supplies power through the first input, and the conversion power does not exceed the rated power input into the first input; the second power supply unit supplies power through the second input, and the conversion power does not exceed the rated power of the second input. The output ends of the first power supply unit and the second power supply unit are output in parallel, so that the total output power is the sum of the input power of the first input of the voltage unit and the second input of the voltage unit.
The input cold-backup redundant power supply control method further comprises the following steps:
when the first input fails and no input is generated, the management circuit detects the first input failure, meanwhile, the second power supply unit reports an overcurrent failure to the management circuit, and the management circuit enables the first power supply unit and the second power supply unit to be turned off;
the management circuit detects a first input fault, and sends a power reduction work instruction to the load by combining fault information of the first power supply unit and the second power supply unit, so that when only the second input exists, the load power is lower than the rated power of the second input, and the system is ensured to be capable of reducing the performance work.
The dual-input cold-backup redundant power supply control method further comprises the following steps:
when the second input fails and no input is generated, the management circuit detects the second input failure, meanwhile, the first power supply unit reports an overcurrent failure to the management circuit, and the management circuit enables the first power supply unit and the second power supply unit to be turned off;
the management circuit detects a second input fault, and sends a power reduction work instruction to the load by combining fault information of the first power supply unit and the second power supply unit, so that when only the first input exists, the load power is lower than the rated power of the first input, and the system is ensured to be capable of reducing the performance work.
Dead zones are arranged on a second switching tube and a fourth switching tube in the backup switching circuit so as to avoid direct connection between the first input and the second input.
As shown in fig. 2, in the backup switching circuit, the second switching tube and the fourth switching tube are provided with dead zones, so that the first input and the second input are not possible to be directly connected. When the second switching tube or the fourth switching tube in the backup switching circuit is in fault short circuit, the first input and the second input are directly connected when the switching circuit works, reverse current is generated, and when the backup switching circuit detects the reverse current, the driving of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube is immediately closed, so that the two paths of input are ensured to be disconnected.
The application controls the dual-input backup switching circuit by detecting the fault information in the dual-input power supply unit, realizes that the backup power supply module is switched into the fault power supply unit as required, supplements the system power, realizes redundant power supply, monitors the input power supply fault information, immediately sends a signal to a load, and the load works according to the fault signal. By the health monitoring, backup power supply module and backup switching circuit, the redundant power supply of the system backup and the load derating work when the single-path fault is input are realized by smaller size and weight, and the reliability and redundancy capability of the system are improved.
The application can be applied to a power supply system with double-input power supply and power expansion and power backup redundancy.
The foregoing description of the embodiments of the application is not intended to limit the scope of the application, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the application shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (5)
1. The double-input cold backup redundant power supply control method is characterized by comprising the following steps of:
when any module in the first power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a first control signal to the backup switching circuit, the backup switching circuit turns on the first switching tube and the second switching tube after receiving the first control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the first power supply unit, the backup power supply module and the second power supply unit to realize full power conversion;
when any module in the second power supply unit fails, fault information is sent to the management circuit, the management circuit simultaneously turns off the first power supply unit and the second power supply unit, the management circuit sends a second control signal to the backup switching circuit, the backup switching circuit turns on the third switching tube and the fourth switching tube after receiving the second control signal to establish output voltage, and meanwhile the backup switching circuit reports an output voltage detection signal to the management circuit, and the management circuit enables the second power supply unit, the backup power supply module and the first power supply unit to realize full power conversion.
2. The dual input cold-backup redundant power supply control method of claim 1, further comprising:
when the first input fails and no input is generated, the management circuit detects the first input failure, meanwhile, the second power supply unit reports an overcurrent failure to the management circuit, and the management circuit enables the first power supply unit and the second power supply unit to be turned off;
the management circuit enables the second power supply unit after sending a power-reducing work instruction to the load, and simultaneously enables the power of the load to be lower than the rated power of the second power supply unit.
3. The dual input cold-backup redundant power supply control method of claim 1, further comprising:
when the second input fails and no input is generated, the management circuit detects the second input failure, meanwhile, the first power supply unit reports an overcurrent failure to the management circuit, and the management circuit enables the first power supply unit and the second power supply unit to be turned off;
the management circuit enables the first power supply unit after sending a power-reducing work instruction to the load, and simultaneously enables the power of the load to be lower than the rated power of the first power supply unit.
4. The method of claim 1, wherein the second switching tube and the fourth switching tube in the backup switching circuit are set with dead zones to avoid the first input and the second input from being directly connected.
5. The method of claim 4, wherein when a through fault occurs in the second switching tube or the fourth switching tube in the backup switching circuit, the first input and the second input are directly connected and generate a reverse current, and when the backup switching circuit detects the reverse current, the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are simultaneously turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310869148.8A CN117040097A (en) | 2023-07-13 | 2023-07-13 | Dual-input cold backup redundant power supply control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310869148.8A CN117040097A (en) | 2023-07-13 | 2023-07-13 | Dual-input cold backup redundant power supply control method |
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| Publication Number | Publication Date |
|---|---|
| CN117040097A true CN117040097A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310869148.8A Pending CN117040097A (en) | 2023-07-13 | 2023-07-13 | Dual-input cold backup redundant power supply control method |
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| Country | Link |
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| CN (1) | CN117040097A (en) |
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2023
- 2023-07-13 CN CN202310869148.8A patent/CN117040097A/en active Pending
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