CN112003247A - Redundant power supply protection method using current-sharing signal and redundant power supply - Google Patents
Redundant power supply protection method using current-sharing signal and redundant power supply Download PDFInfo
- Publication number
- CN112003247A CN112003247A CN202010737868.5A CN202010737868A CN112003247A CN 112003247 A CN112003247 A CN 112003247A CN 202010737868 A CN202010737868 A CN 202010737868A CN 112003247 A CN112003247 A CN 112003247A
- Authority
- CN
- China
- Prior art keywords
- current
- power supply
- threshold
- bus
- sharing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012544 monitoring process Methods 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims abstract description 30
- 230000002159 abnormal effect Effects 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
Abstract
The invention discloses a redundant power supply protection method and a redundant power supply using a current-sharing signal.A first threshold value for measuring the voltage value of a current-sharing bus and a third threshold value for measuring the time exceeding the first threshold value are configured in a current-sharing bus detection unit according to the attribute of a power supply module, and the current-sharing bus detection unit measures the voltage of the current-sharing bus; the current-sharing control unit of the power supply module compares the output signal of the power supply module with a second threshold value and judges whether the power supply module is abnormal or not; feeding back the abnormal condition to a monitoring unit, wherein the monitoring unit prompts a first message and executes a first protection action; the monitoring unit adjusts the current of the current equalizing bus until the total output of the power supply module meets the required current value; in the process of adjusting the current of the current-sharing bus, the voltage detected by the current-sharing bus detection unit is greater than the first threshold, and the time greater than the first threshold exceeds the third threshold, the monitoring unit prompts a second message to execute a second protection action. Thereby realizing the protection of system equipment and the protection of redundant power supplies.
Description
Technical Field
The invention relates to the field of redundant power supply protection, in particular to a redundant power supply protection method using a current-sharing signal and a redundant power supply.
Background
The power supply module of the redundant power supply module is provided with Oring-FET (a kind of field effect transistor) as an isolation switch. At present, the redundant power supply module adopts IC control on the control of an Oring-FET switch, and the closing of the Oring-FET is controlled by the abnormal detection of the IC.
In the specific use process of the redundant power supply, along with the increase of the number of abnormal power supply modules in the power supply modules, the output current of the rest normal power supply modules is larger and larger, if the current set by the current-sharing bus is not higher than the overcurrent protection point of the power supply modules, the power supply modules output the current set by the current-sharing bus, in the prior protection technology, the control IC of the Oring-FET judges that overcurrent occurs according to the current magnitude, the overcurrent protection is realized by closing the Oring-FET by the control IC of the Oring-FET, and if the Oring-FET is damaged, the protection function of closing the Oring-FET due to the overcurrent phenomenon cannot be provided, so that the power supply modules are damaged due to the overcurrent, further, the collapse of the redundant power supply in normal work can be caused, and the data loss in the system equipment powered by the redundant power supply can be caused. However, the lack of a protection mechanism for such a situation in the prior art presents a certain risk, and once a serious consequence of the system equipment powered by the redundant power supply occurs.
Disclosure of Invention
The invention provides a redundant power supply protection method using a current-sharing signal, and aims to solve the problem that data loss in system equipment powered by a redundant power supply is caused by the fact that a power supply module is damaged due to overcurrent and further possible to cause the breakdown of the redundant power supply in normal work because an Oring-FET in the prior art is damaged and cannot provide an overcurrent protection function.
To achieve the above objects, the present invention provides a redundant power protection method using a current-sharing signal, including,
s100, configuring a first threshold value for measuring a voltage value of a current-sharing bus and a third threshold value for measuring time exceeding the first threshold value in a current-sharing bus detection unit according to the attribute of a power supply module, wherein the current-sharing bus detection unit measures the voltage of the current-sharing bus;
s200, comparing the output signal of the power supply module with a second threshold value by a current-sharing control unit of the power supply module, and judging whether the power supply module is abnormal or not;
s300, feeding the abnormal condition back to a monitoring unit, prompting a first message by the monitoring unit, and executing a first protection action;
s400, the monitoring unit adjusts the current of the current equalizing bus and adjusts the current output of the normal power supply module until the total output meets the required current value;
s500, in the process of adjusting the current of the current-sharing bus, the voltage detected by the current-sharing bus detection unit is greater than the first threshold, and the time greater than the first threshold exceeds the third threshold, the monitoring unit prompts a second message, and a second protection action is executed.
Preferably, the first threshold is a voltage of a point on the balanced current bus at which the current output by the power module reaches the overcurrent protection current value, the point is a detection point of the current-sharing bus detection unit, the third threshold is greater than the relaxation time of the power module, and the third threshold is less than the minimum time for the power module to allow the overcurrent protection current to be output.
Preferably, the second threshold is a voltage value determined by the magnitude of a current signal in the current-sharing bus, if the output signal determined by the output current in the normal power supply stage of the power module is equal to the second threshold, it is determined that the power module is normal, and if the output signal determined by the current output in the normal power supply stage of the power module exceeds or is lower than the second threshold, it is determined that the current module is abnormal.
Preferably, the first message indicates a power module with an abnormality, and the first protection action includes an action of turning off the abnormal power module by the monitoring unit, and an action of turning off an Oring-FET connected to the abnormal power module.
Preferably, the monitoring unit gradually increases the current of the current-sharing bus, the second threshold determined by the current of the current-sharing bus is increased, and the current-sharing control unit compares the difference between the output signal of the power module and the second threshold and adjusts the power module according to the feedback of the difference until the output signal of the power module is equal to the second threshold.
Preferably, the second message prompts overcurrent of a power module in the redundant power supply, the second protection action includes an action of sending a signal to the system device by the monitoring unit, the system device performs an action of data saving, and the system device performs an action of turning off the redundant power supply.
Preferably, a current-sharing bus current change value is determined by turning off the number of failed power modules and the number of operating power modules, the monitoring unit adjusts the current of the current-sharing bus, and if the current of the current-sharing bus is greater than the determined change value when the output requirement is met, the Oring-FET of the turned-off failed power module is damaged.
The invention provides a redundant power supply, and the redundant power supply protection method using a current-sharing signal comprises an input end, wherein the input end is electrically connected with a power distribution unit, the power distribution unit is electrically connected with a power supply module for balancing current by a current-sharing bus, the power supply module is electrically connected with a monitoring unit, the monitoring unit is electrically connected with system equipment, and the current-sharing bus is electrically connected with a current-sharing bus detection unit.
Preferably, the current-sharing bus detection unit includes an analog-to-digital converter, the analog-to-digital converter is connected to the current-sharing bus, an output of the analog-to-digital converter is connected to one input of a comparator, another input of the comparator is connected to a first controller, an output of the comparator is connected to the first controller, the first controller is connected to a first storage device, and the first controller is connected to the monitoring unit through an I2C bus.
Preferably, the monitoring unit includes a second controller, the second controller is connected to a second storage device, the second controller is connected to the power module, the second controller is connected to the BMC of the system device through an I2C bus, and the second controller is connected to the first controller through an I2C bus.
The redundant power supply protection method using the current-sharing signal has the following beneficial effects:
the redundant power supply protection method using the current-sharing signal detects the abnormal condition of the power supply module by using the voltage change of the current-sharing bus, realizes the change of the output current of the power supply module by using the current-sharing bus current, meets the current requirement of system equipment (load), changes the voltage of the current-sharing bus in the current-sharing bus current changing process, establishes the relation between the voltage of the current-sharing bus and the output current of the currently running power supply module, and reflects the output current of the power supply module by measuring the voltage of the current-sharing bus through the current-sharing bus detection unit; the method comprises the steps of setting a first threshold value for measuring the voltage of a current-sharing bus, wherein the first threshold value is related to the overcurrent protection current value of a power module, setting a third threshold value for measuring the time that the voltage of the current-sharing bus exceeds the first threshold value, and detecting that the voltage value of the current-sharing bus exceeds the first threshold value within the time that the voltage value exceeds the third threshold value, so that the working power module works under the condition that the overcurrent protection current value is exceeded due to faults (such as an Oring-FET does not work), immediately informing a monitoring unit by a current-sharing module detection unit, informing system equipment by the monitoring unit, storing data by the system equipment and closing a redundant power supply, and protecting the system equipment and the redundant power supply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a flow chart of a redundant power protection method using a current share signal according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a power module architecture that employs a redundant power protection scheme using current share signals;
FIG. 3 is a schematic diagram of a redundant power supply according to the present invention;
FIG. 4 is a schematic diagram of an architecture of a balanced bus detection unit of a redundant power supply according to the present invention;
FIG. 5 is a schematic diagram of a monitoring unit architecture for a redundant power supply according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a redundant power protection method using a current-sharing signal, including the following steps:
s100, configuring a first threshold value for measuring a voltage value of a current-sharing bus and a third threshold value for measuring time exceeding the first threshold value in a current-sharing bus detection unit according to the attribute of a power supply module, wherein the current-sharing bus detection unit measures the voltage of the current-sharing bus; the first threshold is the voltage of a point on the equalizing current bus which enables the current output by the power supply module to reach the overcurrent protection current value, and the point is a detection point of the equalizing bus detection unit. Generally, when a power module receives a target value, the power module often needs to be adjusted to be stable at the target value, and a situation that the power module outputs a transient overcurrent protection current may occur in the adjustment process, so that the third threshold is greater than a relaxation time for the power module to reach a stable state again, and in addition, the third threshold is less than a minimum time for the power module to allow the power module to output the overcurrent protection current, thereby ensuring that a redundant power supply is not damaged.
S200, comparing the output signal of the power supply module with a second threshold value by a current-sharing control unit of the power supply module, and judging whether the power supply module is abnormal or not; the second threshold is a voltage value determined by the magnitude of a current signal in the current equalizing bus, if the output signal determined by the output current in the normal power supply stage of the power supply module is equal to the second threshold, the power supply module is judged to be normal, and if the output signal determined by the current output in the normal power supply stage of the power supply module exceeds or is lower than the second threshold, the current module is judged to be abnormal.
In a specific implementation process, referring to fig. 2, a power module of an existing redundant power supply is described, and a current-sharing control unit is configured for the power module, where the current-sharing control unit may be a differential amplifier, a voltage determined by an output current value of the power module is input to a negative input terminal of the differential amplifier (obtained by connecting a first sampling resistor to an output terminal of the power module), a second threshold determined by a current of a current-sharing bus is input to a positive input terminal of the differential amplifier (obtained by connecting a second sampling resistor to the current-sharing bus), and the differential amplifier outputs a difference between the two values to an output feedback control unit to be used as output adjustment of the power module, so that the output current of the power module makes the first sampling resistor equal to the divided voltage. If the adjustment cannot be carried out, the power module is abnormal.
S300, the power supply module detects abnormality and feeds the abnormality back to the monitoring unit through a signal line, the information during feedback comprises address information of the power supply module, and the monitoring unit prompts a first message and executes a first protection action; in a specific implementation process, referring to fig. 2, taking an existing power module of a redundant power supply as an example, the power module is judged to be abnormal by reading address information of the power module, the first message indicates the power module with the abnormal occurrence according to the address information of the power module, the first protection action includes an action of the monitoring unit to turn off the abnormal power module, after the monitoring unit turns off the abnormal power module, since the abnormal power module is connected in parallel with the normal power module, a current flows to the abnormal power module, at this time, the Oring-FET control unit connected to the abnormal power module detects that the source-drain voltage of the Oring-FET is inverted, and turns off the Oring-FET by outputting a low level to the gate of the Oring-FET, so as to isolate the abnormal power.
S400, the monitoring unit adjusts the current of the current equalizing bus and adjusts the current output of the normal power supply module until the total output meets the required current value; in a specific implementation process, once a power module is abnormal, the remaining power modules which normally work need to adjust an output strategy to meet the total output current requirement, the monitoring unit gradually increases the current of the current-sharing bus by executing an instruction of increasing the current of the current-sharing bus by a redundant power supply, taking the existing master-slave redundant power supply as an example, the monitoring unit controls a master power supply module to gradually increase the current output, the output of the master power supply module increases the current of the current-sharing bus, the second threshold determined by the current of the current-sharing bus is increased accordingly, the current-sharing control unit of the slave power supply module compares the output signal (namely, the first sampling resistance voltage division) of the power supply module with the difference of the second threshold, and adjusts the power supply module according to the feedback of the difference until the output signal of the power supply module is equal to the second threshold. The main power module is taken as an example to illustrate the damage of the Oring-FET: the damage of the Oring-FET can adjust the current of the current-sharing bus without being limited by an overcurrent protection mechanism of the main power supply module, so that the current of the current-sharing bus exceeds the overcurrent values of the main power supply module and the slave power supply module.
In a specific implementation process, the monitoring unit determines a current change value of the current-sharing bus through the number of power modules with faults and the number of power modules with operation, adjusts the current of the current-sharing bus, and when the current of the current-sharing bus is larger than the determined change value when the output requirement is met, the Oring-FET of the power module with faults is damaged and cannot isolate the power module with faults, so that the power module with the faults is prompted.
S500, in the process of adjusting the current of the current-sharing bus, the voltage detected by the current-sharing bus detection unit is greater than the first threshold, and the time greater than the first threshold exceeds the third threshold, the monitoring unit prompts a second message, and a second protection action is executed. In a specific implementation process, the current-sharing bus detection unit configured in step S100 measures a voltage value of the current-sharing bus in real time, the current-sharing bus monitoring unit compares the voltage value of the current-sharing bus with the first threshold, and if the voltage detected by the current-sharing bus detection unit is smaller than the first threshold, it indicates that the current of the remaining power module in operation does not reach an over-protection current value, and the remaining power module can operate normally; if the voltage detected by the current-sharing bus detection unit is greater than the first threshold value, but the time greater than the first threshold value is less than the third threshold value, it indicates that the output current of the power module reaches the over-protection current temporarily in the controlled adjustment process due to the overlarge parameter adjustment value, but recovers and stabilizes below the first threshold value quickly, and the rest power modules can operate normally; the voltage detected by the current-sharing bus detection unit is greater than a first threshold, and the time greater than the first threshold exceeds a third threshold, which indicates that the current of the power module which remains in operation reaches an overcurrent protection current value, at the moment, the monitoring unit prompts a second message to execute a second protection action, the second message prompts the overcurrent of the power module in the redundant power supply, the second protection action comprises an action of sending a signal to system equipment by the monitoring unit, the system equipment executes a data storage action, and the system equipment executes an action of closing the redundant power supply.
The redundant power supply protection method using the current-sharing signal provided by the application utilizes the current-sharing bus current to meet the current requirement of system equipment (load), and in the process of changing the current-sharing bus current, the voltage of the current-sharing bus changes, the relation between the voltage of the current-sharing bus and the output current of the currently running power supply module is established, and the current-sharing bus detection unit measures the voltage of the current-sharing bus to reflect the output current of the power supply module; the method comprises the steps of setting a first threshold value for measuring the voltage of a current-sharing bus, wherein the first threshold value is related to the overcurrent protection current value of a power module, setting a third threshold value for measuring the time that the voltage of the current-sharing bus exceeds the first threshold value, and detecting that the voltage value of the current-sharing bus exceeds the first threshold value within the time that the voltage value exceeds the third threshold value, so that the working power module works under the condition that the overcurrent protection current value is exceeded due to faults (such as an Oring-FET does not work), immediately informing a monitoring unit by a current-sharing module detection unit, informing system equipment by the monitoring unit, storing data by the system equipment and closing a redundant power supply, and protecting the system equipment and the redundant power supply.
Referring to fig. 3, the present invention provides a redundant power supply, and the redundant power supply protection method using a current-sharing signal includes an input terminal, where the input terminal is electrically connected to a power distribution unit, and the power distribution unit is electrically connected to a power module for balancing current via a current-sharing bus, in a specific implementation process, the input terminal is a dc input terminal or an ac input terminal, the corresponding power distribution unit is a dc power distribution unit or an ac power distribution unit, the power module is controlled to be electrically connected to the monitoring unit, and the monitoring unit is electrically connected to a system device via an I2C bus;
and the current-sharing bus is electrically connected with the current-sharing bus detection unit. Referring to fig. 4, in a specific implementation process, the current-sharing bus detection unit includes an analog-to-digital converter, the analog-to-digital converter is connected to the current-sharing bus, an output of the analog-to-digital converter is connected to one input of a comparator, another input of the comparator is connected to a voltage of a first threshold, an output of the comparator is connected to a first controller, the first controller is connected to another input of the comparator to provide the voltage of the first threshold, the first controller is connected to a first storage device, the first storage device stores the first threshold and a third threshold, and the first controller is connected to the monitoring unit through an I2C bus.
In a specific implementation process, the monitoring unit is connected to a BMC of the system device through an I2C bus, the monitoring unit includes a second storage device, the second storage device configures a control instruction of a power module, the monitoring unit includes a second controller, the second controller is connected to the second storage device, the second controller is connected to the power module, the second controller is connected to the first controller through an I2C bus, the second controller executes the instruction to obtain a parameter of the power module, and a first threshold and a second threshold are determined according to the parameter of the power module; the second controller transmits the first threshold value and the third threshold value to the first controller through an I2C bus, the first controller configures the first threshold value and the third threshold value on a first storage device, and the second controller measures the total current output of all power modules in real time through a current induction sensor.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A redundant power protection method using a current share signal includes,
s100, configuring a first threshold value for measuring a voltage value of a current-sharing bus and a third threshold value for measuring time exceeding the first threshold value in a current-sharing bus detection unit according to the attribute of a power supply module, wherein the current-sharing bus detection unit measures the voltage of the current-sharing bus;
s200, comparing the output signal of the power supply module with a second threshold value by a current-sharing control unit of the power supply module, and judging whether the power supply module is abnormal or not;
s300, feeding the abnormal condition back to a monitoring unit, prompting a first message by the monitoring unit, and executing a first protection action;
s400, the monitoring unit adjusts the current of the current equalizing bus and adjusts the current output of the normal power supply module until the total output meets the required current value;
s500, in the process of adjusting the current of the current-sharing bus, the voltage detected by the current-sharing bus detection unit is greater than the first threshold, and the time greater than the first threshold exceeds the third threshold, the monitoring unit prompts a second message, and a second protection action is executed.
2. The method according to claim 1, wherein the first threshold is a voltage of a point on the balanced current bus at which the current outputted by the power module reaches an overcurrent protection current value, the point being a detection point of the current-sharing bus detection unit, the third threshold is greater than a relaxation time of the power module, and the third threshold is less than a minimum time for which the power module is allowed to output the overcurrent protection current.
3. The method according to claim 1, wherein the second threshold is a voltage value determined by the magnitude of the current signal in the current-sharing bus, if the output signal determined by the output current in the normal power supply phase of the power module is equal to the second threshold, the power module is determined to be normal, and if the output signal determined by the current output in the normal power supply phase of the power module exceeds or is lower than the second threshold, the current module is determined to be abnormal.
4. The redundant power protection method according to claim 1, wherein the first message indicates a power module with an abnormal occurrence, the first protection action includes an action of the monitoring unit turning off the abnormal power module, and an action of an Oring-FET connected to the abnormal power module turning off.
5. The method according to claim 1, wherein the monitoring unit gradually increases the current of the current-sharing bus, the second threshold determined by the current of the current-sharing bus increases, and the current-sharing control unit compares the difference between the output signal of the power module and the second threshold and adjusts the power module according to the feedback of the difference until the output signal of the power module is equal to the second threshold.
6. The method according to claim 1, wherein the second message indicates that a power module in the redundant power supply is over-current, the second protection action comprises an action of sending a signal to a system device by the monitoring unit, the system device performs a data saving action, and the system device performs a redundant power supply shutdown action.
7. The method according to claim 1, wherein a current-sharing bus current change value is determined by the number of power modules with faults and the number of power modules with operations being turned off, the monitoring unit adjusts the current of the current-sharing bus, and if the current of the current-sharing bus meets the output requirement is greater than the determined change value, the Oring-FET of the power module with faults being turned off is damaged.
8. The redundant power supply comprises an input end, wherein the input end is electrically connected with a power distribution unit, the power distribution unit is electrically connected with a power module for balancing current through a current-sharing bus, the power module is electrically connected with a monitoring unit, and the monitoring unit is electrically connected with system equipment.
9. The redundant power supply of claim 8, wherein said current share bus detection unit comprises an analog-to-digital converter, said analog-to-digital converter is connected to said current share bus, an output of said analog-to-digital converter is connected to one input of a comparator, another input of said comparator is connected to a first controller, an output of said comparator is connected to said first controller, said first controller is connected to a first storage device, and said first controller is connected to said monitoring unit through an I2C bus.
10. The redundant power supply of claim 9, wherein said monitor unit includes a second controller, said second controller is connected to a second storage device, said second controller is connected to said power module, said second controller is connected to a BMC of said system device via an I2C bus, and said second controller is connected to said first controller via an I2C bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010737868.5A CN112003247A (en) | 2020-07-28 | 2020-07-28 | Redundant power supply protection method using current-sharing signal and redundant power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010737868.5A CN112003247A (en) | 2020-07-28 | 2020-07-28 | Redundant power supply protection method using current-sharing signal and redundant power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112003247A true CN112003247A (en) | 2020-11-27 |
Family
ID=73467872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010737868.5A Withdrawn CN112003247A (en) | 2020-07-28 | 2020-07-28 | Redundant power supply protection method using current-sharing signal and redundant power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112003247A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769664A (en) * | 2021-01-07 | 2021-05-07 | 易事特集团(河南)有限公司 | Current sharing control method, multi-power-supply parallel system and storage medium |
| CN113010999A (en) * | 2021-02-10 | 2021-06-22 | 山东英信计算机技术有限公司 | High-precision current equalizing method, system and medium for power supply module |
| CN113360345A (en) * | 2021-06-21 | 2021-09-07 | 北京淳中科技股份有限公司 | Redundant current value monitoring method and device, electronic equipment and readable storage medium |
-
2020
- 2020-07-28 CN CN202010737868.5A patent/CN112003247A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769664A (en) * | 2021-01-07 | 2021-05-07 | 易事特集团(河南)有限公司 | Current sharing control method, multi-power-supply parallel system and storage medium |
| CN113010999A (en) * | 2021-02-10 | 2021-06-22 | 山东英信计算机技术有限公司 | High-precision current equalizing method, system and medium for power supply module |
| CN113010999B (en) * | 2021-02-10 | 2022-11-29 | 山东英信计算机技术有限公司 | High-precision current equalizing method, system and medium for power supply module |
| CN113360345A (en) * | 2021-06-21 | 2021-09-07 | 北京淳中科技股份有限公司 | Redundant current value monitoring method and device, electronic equipment and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112003247A (en) | Redundant power supply protection method using current-sharing signal and redundant power supply | |
| CN105790348B (en) | Overcurrent protection in battery charger | |
| US6301133B1 (en) | Power supply system with ORing element and control circuit | |
| US5428523A (en) | Current sharing signal coupling/decoupling circuit for power converter systems | |
| US8125189B2 (en) | Systems for charging a battery in a closed loop configuration | |
| JP5451094B2 (en) | Charging circuit, charging device, electronic device, and charging method | |
| US9893561B2 (en) | Power supply conversion system and method of controlling the same | |
| US20220181906A1 (en) | Modular power systems | |
| TWI418109B (en) | Battery apparatus, integrated circuit for battery system and battery protection method | |
| US10013012B2 (en) | Control method and apparatus | |
| CN101320913B (en) | Power supply apparatus, power supply apparatus control method | |
| US7851945B2 (en) | System and method of providing power | |
| US7443055B2 (en) | Systems and methods for providing redundant voltage regulation | |
| US9882423B2 (en) | Uninterruptible power supply control | |
| KR102043050B1 (en) | Method And Apparatus for Detecting Failure of Electronic Vehicle Charger | |
| US20100165526A1 (en) | Apparatus, system, and method to prevent smoke in a power supply powered by a current limited source | |
| TW201841459A (en) | Fast transient response circuit | |
| US8977406B2 (en) | Power supply system, power supply control method, power supply control device and program | |
| KR102103594B1 (en) | Power supply apparatus with soft―start and protection | |
| JP2001352674A (en) | Power circuit | |
| US20240014664A1 (en) | Power supply system and method for controlling output voltage of direct current combiner box | |
| EP2535995A2 (en) | Overcurrent limiting for high side solenoid switch controls | |
| JP2011065286A (en) | Power unit, testing device, and power supply method | |
| CN107612328A (en) | A kind of dc source digital current-sharing method in parallel | |
| JP7013910B2 (en) | Uninterruptible power supply system and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201127 |
|
| WW01 | Invention patent application withdrawn after publication |