CN111381659B - Computer system and power management method - Google Patents
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- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
- G06F1/305—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations in the event of power-supply fluctuations
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- G—PHYSICS
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Abstract
A power management method is suitable for a computer system, and determines a rated output power of at least one DC voltage by two power supply units according to an output power parameter; one of the two baseboard management controllers determines the output power parameter according to the voltage amplitude of an alternating current commercial power; and one of the two power supply units is operated in an operation state as a starting mode, so that the other one of the two power supply units is controlled to operate in one of the starting mode and a non-starting mode according to the rated output power of the two power supply units, the operation state and the total load power of each application circuit.
Description
[ field of technology ]
The present invention relates to a computer system and a power management method, and more particularly to a computer system and a power management method for providing a standby function of a power supply.
[ background Art ]
Conventional computer systems, such as a server rack, include a power module and a plurality of nodes (nodes), wherein the power module is composed of two power supplies. The nodes may be operation modules or storage modules, and the operation modules are General-purpose graphics processing units (GPGPU). Each power supply supports the CRPS (Common redundant power supplies) specification established by Intel corporation, so that under normal operating conditions, the computer system only starts one of the two power supplies as a main power supply to provide the power required by the operation of the nodes included in the computer system, and the other power supply is used as a standby power supply and is in an inactive state or a standby state.
For example, each power supply may receive 110 v or 220 v ac mains supply, and correspondingly convert the ac mains supply into dc output voltage corresponding to dc output current. However, assuming that the actual rated output power of each power supply is 2000 watts (W) when receiving 220 v ac mains, if each power supply is changed to receive 110 v ac mains, the actual rated output power will be 1000 watts.
When the conventional computer system monitors the operation of the power module with a fixed predetermined rated power under normal operation conditions, for example, the power module, that is, the two power supplies, are designed to receive 220 v ac mains supply, so that one of the two power supplies, that is, the main power supply, provides the power operated by the nodes included in the computer system, wherein the other one of the two power supplies is used as the backup power supply, and the computer system is designed to control whether to turn on (or turn on) the backup power supply of the power module according to the set safety operation threshold, for example, 80% when the power module with the backup function is designed to use the average value of the predetermined rated power output corresponding to the two power supplies included in the power module. For example, when the two power supplies are both receiving 220 v ac mains supply, the maximum actual rated power is 2000 watts (W), the predetermined rated output power of the power module is set to 2000 watts (W), and the power supply state of the power module is calculated by taking 2000 watts (W) as the fixed value of the predetermined rated output power, for example, under normal operation of the computer system, the method of calculating the power supply state of the power module uses the ratio of the power supplied by the power module to the computer system (equal to the actual power consumed by the computer system when the computer system operates) and the predetermined rated output power as the power supply state, and a comparison result is obtained by comparing the power supply state of the power module with the safe operation threshold, and whether to turn on the standby power supply to switch the standby power supply from the standby state or the non-start state to the start state is determined according to the comparison result, wherein, for example, the safe operation threshold is 80% or more, and when the power supply state is 80% or more, the standby power supply is started. However, when the user connects the plug of the two power supplies to the socket for supplying 110 v ac mains supply by mistake, the maximum actual rated output power provided by the two power supplies will also be reduced to only half of the actual rated output power originally used as the predetermined rated output power, for example, from 2000 watts to 1000 watts.
At this time, since the computer system monitors the operation of the power supply module using a fixed predetermined rated power of 2000 watts, only the main power supply is started under the normal operation of the computer system, and when the main power supply is operated in an environment receiving 110 v ac mains power, even if the main power supply continuously supplies the power required for the operation of the computer system with its actual rated output power which is the maximum possible output, in other words, the main power supply continuously supplies the power (equal to the actual power consumption consumed during the operation of the computer system) equal to its maximum actual rated output power, that is, the main power supply is continuously operated in a full power supply mode, since under the normal operation of the computer system, only the main power supply is started, that is, the started portion of the power supply module is continuously operated in a 100% power supply state, but since the conventional predetermined rated output power set by the computer system is fixed, the power consumption required for the operation of the computer system is continuously monitored, in other than the conventional computer system is judged that the critical power consumption is the actual power consumption which is the maximum actual power consumption of the computer system is not equal to the actual power consumption of the power supply state which is the maximum possible, the critical power supply state of the computer system is not continuously started, the power supply state of the power supply module is continuously started up in the normal operation of the computer system, since the critical power consumption of the power supply is the power supply state is the normal operation of the computer system is not calculated, the computer system is operated under full power for a long period of time to provide enough power to accelerate the reduction of the life of the main power supply or to cause damage thereto.
In contrast, when the conventional computer system is in normal operation, the power module, i.e. the two power supplies, are designed to receive 110 volts ac mains. However, when the user connects the plug of the two power supplies to the socket providing 220 v ac mains supply by mistake, the maximum actual rated output power provided by the two power supplies will also correspond to the equal proportion increase of the received ac mains supply to be twice the original actual rated output power as the predetermined rated output power, for example, the actual rated output power of each power supply in the power supply module is changed from 2000 watts to 4000 watts, if the power required for the computer system to operate is 1800 watts, the calculated actual rated output power of the two power supplies of the power supply module is preset to be 4000 watts, although the power required for providing the computer system to operate can easily provide sufficient operating power for the whole computer system by starting the main power supply, since the power supply module uses the fixed predetermined rated output power to calculate and determine whether to start the other power supply as the standby power supply in the power supply module, in this embodiment, the predetermined output power is 2000 watts, if the calculated actual rated output power is 2000 watts, the calculated as the calculated actual rated output power of the two power supply modules is equal to the threshold value of 4000% (the total power consumption of 90% of the power supply is calculated as the threshold power supply power of the power supply system is about 90% of the total power supply of the power supply system is about 90). In this way, although the computer system can obtain enough power to maintain normal operation, since each power supply is actually in a state of small power supply, for the power supply, performing power supply conversion of small power supply or large power supply can cause more power consumption in the process of converting power supply, furthermore, the power supply module with a backup function refers to the power supply module having an inactive power supply as the backup power supply under normal operation, in this case, the power supply module is started under normal operation to start all the power supplies included in the power supply module, so that any inactive power supply of the power supply module is not used as the backup power supply, and thus the backup capability is lost, that is, when any one power supply is abnormal, the power supply module can not have an inactive power supply for starting up to backup the power supply which is detected to have abnormal power supply, the power supply module is triggered to start up and protect and shut down the output of the direct current output voltage of the power supply module, thus the computer system is seriously damaged, and the computer system is seriously damaged.
[ invention ]
The invention aims to provide a computer system and a power management method for effectively providing a standby function of a power supply.
In order to solve the above technical problems, a computer system is provided, which includes N application circuits, two power supply units, and N baseboard management controllers. Each application circuit receives at least one direct-current voltage as the operating power and consumes the total power of a corresponding load, and N is a positive integer.
Each power supply unit is electrically connected with the N application circuits and is suitable for receiving alternating current commercial power, converting and outputting at least one direct current voltage when an operation state is a starting mode, not outputting the at least one direct current voltage when the operation state is a non-starting mode, storing a first input alternating current voltage value, a second input alternating current voltage value, a first output power value corresponding to the first input alternating current voltage value and a second output power value corresponding to the second input alternating current voltage value, and determining a rated output power of the at least one direct current voltage according to an output power parameter.
The baseboard management controllers are electrically connected with the power supply units. One of the baseboard management controllers determines that the output power parameter is equal to the corresponding one of the first output power value and the second output power value according to the voltage amplitude of the alternating current commercial power, which corresponds to the first input alternating current voltage value and the second input alternating current voltage value, and transmits and stores the output power parameter to each power supply unit.
One of the power supply units operates in the starting mode, and the other power supply unit is controlled to operate in one of the starting mode and the non-starting mode according to the rated output power of each power supply unit, the operating state and the total load power of each application circuit.
Preferably, the computer system further comprises a voltage bridge controller electrically connected between the two power supply units and the N baseboard management controllers and the N application circuits. Each power supply unit can detect and store the voltage amplitude of the alternating current commercial power.
The voltage bridging controller receives the at least one direct current voltage from the two power supply units to output to each application circuit, and detects and stores the total load power of each application circuit. The voltage bridge controller can also receive an inquiry command to read the first input alternating voltage value, the second input alternating voltage value, the first output power value, the second output power value and the voltage amplitude of the alternating current commercial power stored in each power supply unit.
The inquiry command is generated by one of the baseboard management controllers, so that the voltage bridging controller can obtain the first input alternating voltage value, the second input alternating voltage value, the first output power value, the second output power value, the voltage amplitude of the alternating current commercial power and the total load power of each application circuit stored in each power supply unit.
Preferably, when one of the power supply units is operated in the start-up mode and the other power supply unit is operated in the no-start-up mode, the power supply unit operated in the start-up mode calculates a power supply state. The power state is equal to the sum of the total power of the loads of each application circuit divided by the rated output power of the power supply unit operating in the start-up mode. When the power supply unit operating in the starting mode judges that the power supply state is larger than a preset first safe operation critical value, the other power supply unit is controlled to operate in the starting mode instead.
Preferably, when the two power supply units operate in the start-up mode, one of the power supply units calculates a power supply state. The power supply state is equal to the sum of the total power of the loads of each application circuit divided by the sum of the rated output powers of the two power supply units operating in the start-up mode. When one of the power supply units judges that the power supply state is smaller than a preset second safety operation critical value, the other power supply unit is controlled to operate in the non-starting mode instead.
Preferably, the baseboard management controller determines a load threshold value corresponding to each application circuit according to the voltage amplitude of the ac mains supply, the load threshold value is smaller than a rated total output power, and the magnitude of the load threshold value is related to the magnitude of the rated total output power. The rated total output power is equal to the sum of the rated output powers of the two power supply units in which the power supply units operate in the start-up mode.
The N baseboard management controllers are also respectively and electrically connected with the N application circuits, and when one of the baseboard management controllers judges that the total load power of the corresponding application circuit is greater than or equal to the corresponding load critical value, the corresponding baseboard management controller is informed to generate a load reducing instruction to the corresponding application circuit, so that the total load power consumed by the corresponding application circuit is reduced.
The invention also provides a power management method which is suitable for a computer system, wherein the computer system comprises N application circuits, two power supply units and N baseboard management controllers, and N is a positive integer. The power management method comprises the steps (a) - (e).
In step (a), each application circuit receives at least one DC voltage as the power for operation and consumes the total power of a corresponding load.
In step (b), each power supply unit is adapted to receive an ac mains supply, and is operated to convert and output the at least one dc voltage when an operation state is a start mode, and is operated to not output the at least one dc voltage when the operation state is a no-start mode, and stores a first input ac voltage value, a second input ac voltage value, a first output power value corresponding to the first input ac voltage value, and a second output power value corresponding to the second input ac voltage value, and determines a rated output power of the at least one dc voltage according to an output power parameter.
In step (c), one of the baseboard management controllers determines that the output power parameter is equal to the corresponding one of the first output power value and the second output power value according to the voltage amplitude of the ac mains supply corresponding to the first input ac voltage value and the second input ac voltage value, and transmits and stores the output power parameter to each power supply unit.
In step (d), one of the power supply units is operated in the start-up mode, and the other power supply unit is controlled to operate in one of the start-up mode and the non-start-up mode according to the rated output power of each power supply unit, the operating state and the total load power of each application circuit.
Preferably, the computer system further comprises a voltage bridge controller, and the power management method further comprises steps (e) and (f), wherein in step (b), each power supply unit can detect and store the voltage amplitude of the ac mains.
In step (e), the voltage bridging controller receives the at least one dc voltage from the two power supply units to output to each application circuit, and detects and stores the total load power of each application circuit.
In step (f), the voltage bridge controller can also receive an inquiry command to read the first input ac voltage value, the second input ac voltage value, the first output power value, the second output power value and the voltage amplitude of the ac mains supply stored in each power supply unit.
In step (c), one of the baseboard management controllers generates the query command to obtain the first input ac voltage value, the second input ac voltage value, the first output power value, the second output power value, the voltage amplitude of the ac mains supply, and the total load power of each application circuit stored in each power supply unit by the voltage bridge controller.
Preferably, in step (d), when one of the power supply units is operated in the start-up mode and the other power supply unit is operated in the no-start-up mode, the power supply unit operated in the start-up mode calculates a power supply state. The power state is equal to the sum of the total power of the loads of each application circuit divided by the rated output power of the power supply unit operating in the start-up mode. When the power supply unit operating in the starting mode judges that the power supply state is larger than a preset first safe operation critical value, the other power supply unit is controlled to operate in the starting mode instead.
Preferably, in step (d), when the two power supply units operate in the start-up mode, one of the power supply units calculates a power supply state. The power supply state is equal to the sum of the total power of the loads of each application circuit divided by the sum of the rated output powers of the two power supply units operating in the start-up mode. When one of the power supply units judges that the power supply state is smaller than a preset second safety operation critical value, the other power supply unit is controlled to operate in the non-starting mode instead.
Preferably, the power management method further comprises step (g), wherein each baseboard management controller determines a load threshold value corresponding to each application circuit according to the voltage amplitude of the ac mains, the load threshold value is smaller than a rated total output power, and the magnitude of the load threshold value is related to the magnitude of the rated total output power. The rated total output power is equal to the sum of the rated output powers of the two power supply units in which the two power supply units operate in the start-up mode.
When one of the baseboard management controllers judges that the total load power of the corresponding application circuit is greater than or equal to the corresponding load critical value, the corresponding baseboard management controller is informed to generate a load reducing instruction to the corresponding application circuit, so that the total load power consumed by the corresponding application circuit is reduced.
Compared with the prior art, the computer system and the power management method of the invention determine the output power parameter by one of the baseboard management controllers according to the voltage amplitude of the alternating current commercial power, so that each power supply unit determines the rated output power of the at least one direct current voltage according to the output power parameter. One of the power supply units operates in the starting mode, and the other power supply unit is controlled to operate in one of the starting mode and the non-starting mode according to the rated output power of each power supply unit, the operating state and the total load power of each application circuit, so that the problems in the prior art can be solved.
[ description of the drawings ]
FIG. 1 is a block diagram illustrating an embodiment of a computer system according to the present invention.
FIG. 2 is a flowchart illustrating steps of a power management method implemented by the computer system of the present invention.
[ detailed description ] of the invention
Referring to fig. 1, the computer system of the present invention includes two main boards 2, 3, two baseboard management controllers (Baseboard management controller, BMC) 21, 31, two application circuits 22, 32, a power distribution board (Power distribution board, PDB) 4, a voltage bridge controller 5, and two power supply units (Power supply unit, PSU) 11, 12.
The computer system is, for example, a server cabinet, and the two baseboard management controllers 21 and 31 and the two application circuits 22 and 32 are respectively disposed on the two mainboards 2 and 3 to form two nodes (nodes). Each application circuit 22, 32 is, for example, at least one of a chip including a Central Processing Unit (CPU), a Chipset (Chipset), a disk storage unit (e.g., hard disk drive), a General-purpose graphics processing unit (GPGPU), a graphics display chip, or any element of a node of a server that requires power consumption.
Referring to fig. 1 and 2, fig. 2 is a schematic diagram of an embodiment of a power management method for the computer system, wherein the power management method includes steps S11 to S18.
In step S11, each application circuit 22, 32 receives the at least one dc voltage Vout1, vout2 as the operating power and consumes the total power of the corresponding load.
In step S12, each power supply unit 11, 12 is adapted to receive an AC mains supply AC1, and is operated to switch and output at least one dc voltage Vin1, vin2 when an operation state is a start mode, and is operated not to output the at least one dc voltage Vin1, vin2 when the operation state is a no-start mode, and stores a first input AC voltage value, a second input AC voltage value, a first output power value corresponding to the first input AC voltage value, and a second output power value corresponding to the second input AC voltage value, and determines a rated output power of the at least one dc voltage according to an output power parameter. For example, each power supply unit 11, 12 includes at least one power supply.
In the present embodiment, the two power supply units 11, 12 respectively receive the same AC mains AC1 via two electric wires (not shown) and two jacks of the socket, and the voltage amplitude of the AC mains AC1 is, for example, 110 volts or 220 volts. For convenience of description, the two dc voltages Vin1 and Vin2 include various dc voltages, for example, the dc voltage Vin1 represents three dc voltages of 12 volts, 5 volts, and 3.3 volts, and the dc voltage Vin2 also represents three dc voltages of 12 volts, 5 volts, and 3.3 volts, but is not limited thereto. That is, the two power supply units 11, 12 output three dc voltages of 12 volts, 5 volts, and 3.3 volts.
Each power supply unit 11, 12 also detects the AC mains AC1, stores the voltage amplitude of the AC mains AC1, supports the CRPS (Common redundant power supplies) standard, and transmits and receives information via a bus CR provided on the power distribution board 4.
In step S13, the voltage bridge controller 5 receives the at least one dc voltage Vin1, vin2 from the two power supply units 11, 12 and is further electrically connected to the two application circuits 22, 32 to output two dc voltages Vout1, vout2 to each application circuit 22, 32, and detects and stores a total load power of each application circuit 22, 32
For example, the voltage bridge controller 5 outputs the received dc voltages Vin1, vin2 of 12 volts, 5 volts and 3.3 volts to the two application circuits 22, 32 according to a predetermined output ratio, wherein the dc voltages Vout1, vout2 respectively include the output voltages of 12 volts, 5 volts and 3.3 volts, and the sum of the power of the dc voltages Vin1, vin2 is equal to the sum of the power of the dc voltages Vout1, vout 2.
Additionally, the following additional explanation is provided: the two dc voltages Vout1 and Vout2 are supplied to other devices disposed on the two boards 2 and 3, such as the two baseboard management controllers 21 and 31, in addition to the two application circuits 22 and 32, respectively, as operating power.
In step S14, the voltage bridge controller 5 can also receive an inquiry command to read the first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value, and the voltage amplitude of the AC utility AC1 stored in each of the power supply units 11, 12. In the present embodiment, the voltage bridge controller 5 is, for example, a Microcontroller (MCU), but not limited thereto.
In step S15, one of the baseboard management controllers 21 and 31 generates the query command to obtain the first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value, the voltage amplitude of the AC utility AC1, and the total load power of each application circuit 22 and 32 stored in each power supply unit 11 and 12 by the voltage bridge controller 5. One of the baseboard management controllers 21, 31 determines that the output power parameter is equal to the corresponding one of the first output power value and the second output power value according to which of the first input AC voltage value and the second input AC voltage value corresponds to the voltage amplitude of the AC utility AC1, and transmits and stores the output power parameter to each power supply unit 11, 12.
In more detail, one of the baseboard management controllers 21, 31 is one of the baseboard management controllers 21, 31 operating in a Master mode (Master mode). In addition, the two baseboard management controllers 21 and 31 and the voltage bridge controller 5 and the two power management units 11 and 12 exchange information via a plurality of signals S1-S4, and the signals S1-S4 support a power management interface (Power supply management interface, PSMI).
In step S16, by operating one of the power supply units 11 (or 12) in the start-up mode, the other power supply unit 12 (or 11) is controlled to operate in one of the start-up mode and the non-start-up mode according to the rated output power of each of the power supply units 11, 12, the operating state and the total load power of each of the application circuits 22, 32. For example, one of the power supply units 11 (or 12) is the two power supply units 11, 12 that determine to operate in a master mode according to CRPS specifications.
In more detail, when one of the power supply units 11 (or 12) is operated in the start-up mode and the other power supply unit 12 (or 11) is operated in the no-start-up mode, the power supply unit 11 (or 12) operated in the start-up mode calculates a power supply state. The power state is equal to the sum of the total power of the loads of each application circuit 22, 32 divided by the rated output power of the power supply unit 11 (or 12) operating in the start-up mode. When the power supply unit 11 (or 12) operating in the start-up mode determines that the power supply state is greater than a predetermined first safe operation threshold, another power supply unit is controlled to operate in the start-up mode 12 (or 11) instead.
For example, the first input ac voltage value, the second input ac voltage value, the first output power value, and the second output power value are 110 volts, 220 volts, 500 watts, and 1000 watts, respectively. When the voltage amplitude of the AC mains supply AC1 is equal to the first input AC voltage value (i.e. 110 v) and the corresponding rated output power is equal to the first output power value (i.e. 500 w), assuming that the total load power is equal to 450 w and the first safe operation threshold is equal to 80%, and the operation state of the power supply unit 11 is the start mode, the power supply unit 11 determines that the power supply state (equal to 450/500=90%) is greater than the first safe operation threshold (i.e. 80%), and starts the power supply unit 12 to supply power together by transmitting information via the bus CR. Similarly, under the same condition, the voltage amplitude of the AC mains AC1 is equal to the second input AC voltage value (i.e. 220 v), and when the corresponding rated output power is equal to the second output power value (i.e. 1000 w), the power supply state is equal to 450/1000=45%, so that the power supply unit 12 is not activated (operating in the inactive mode), and the problem of the prior art that both power supply units are activated under the condition is avoided.
Furthermore, when the two power supply units 11, 12 are operated in the start-up mode, one of the power supply units (e.g. master) 11 (or 12) calculates the other power supply state. The power state is equal to the sum of the total power of the loads of each application circuit 22, 32 divided by the sum of the rated output powers of the two power supply units 11, 12 operating in the start-up mode. When one of the power supply units 11 (or 12) determines that the power supply state is less than a predetermined second safe operation threshold, the other power supply unit 12 (or 11) is controlled to operate in the non-start mode instead.
For example, when the voltage amplitude of the AC utility AC1 is equal to the second input AC voltage value (i.e. 220 v) and the rated output power is equal to the second output power value (i.e. 1000 w), assuming that the total load power is equal to 300 w and the second safe operation threshold is equal to 20%, and the operation states of the two power supply units 11, 12 are both in the start-up mode, one of the power supply units 11, 12 (e.g. 11) is determined to be less than the second safe operation threshold (i.e. 20%), and the other one of the two power supply units 11, 12 (e.g. 12) is turned off by the bus CR transmitting information. Similarly, under the same condition, when the voltage amplitude of the AC mains AC1 is equal to the first input AC voltage value (i.e. 110 v) and the rated output power is equal to the first output power value (i.e. 500 w), the power supply state is equal to 300/1000=30%, and then neither of the two power supply units 11, 12 is turned off, and power supply is continued, so that the problem generated by the prior art that both of the two power supply units are turned off under the condition is avoided.
In step S17, when one of the baseboard management controllers 21, 31 determines that the two power supply units 11, 12 output the at least one dc voltage Vin1, vin2 simultaneously, a warning message indicating that the standby function has failed is generated. The warning message may be displayed on a display screen (not shown) via a Basic Input Output System (BIOS) (not shown) to inform the user or system manager.
Continuing the previous example, each baseboard management controller 21, 31 obtains the voltage amplitude of the AC mains supply AC1 to be equal to the first input AC voltage value (i.e. 110 v), and if the total load power is equal to 800 w, each baseboard management controller 21, 31 determines that the two first output power values are smaller than the total load power (i.e. 500 w is smaller than 800 w), and further determines that the two power supply units 11, 12 output the dc voltages Vin1, vin2 simultaneously. At this time, the two power supply units 11, 12 of the computer system are both operated to output the dc voltages Vin1, vin2, and no redundant (Redundancy) power is available.
In step S18, a load threshold corresponding to each application circuit 22, 32 is determined by each baseboard management controller 21, 31 according to the voltage amplitude of the AC utility AC 1. The load threshold is smaller than a rated total output power, and the magnitude of the load threshold is related to the magnitude of the rated total output power, which is equal to the sum of the rated output powers of the two power supply units 11, 12, which operate in the start-up mode.
When one of the baseboard management controllers 21, 31 determines that the total load power of the corresponding application circuit 22, 32 is greater than or equal to the corresponding load threshold value, notifying the corresponding baseboard management controller 21, 31 to generate a load-reducing instruction to the corresponding application circuit 22, 32, so that the total load power consumed by the corresponding application circuit 22, 32 is reduced
In the previous example, when each of the power supply units 11, 12 determines that the voltage amplitude of the AC mains supply AC1 corresponds to 110 volts, that is, substantially equal to 110 volts but the amplitude is not exactly equal to 110 volts, the rated output power of the generated dc voltages Vin1, vin2 is 500 watts, and thus the rated total output power of the dc voltages Vin1, vin2 is equal to the sum of the two first output power values (that is, the sum of the two rated output powers is equal to 1000 watts).
Furthermore, each baseboard management controller 21, 31 stores two candidate load thresholds in advance, wherein the two candidate load thresholds correspond to the first input ac voltage value and the second input ac voltage value respectively. When each baseboard management controller 21, 31 obtains which of the first input AC voltage value and the second input AC voltage value the voltage amplitude of the AC mains AC1 is equal to, it determines that the load threshold is equal to the corresponding candidate load threshold.
Continuing with the previous example, the two candidate load thresholds pre-stored by each baseboard management controller 21, 31 are 450 watts and 900 watts to correspond to 110 volts and 220 volts, respectively. The total power of the load of each application circuit 22, 32 is 500 watts. When the voltage amplitude of the AC mains AC1 is equal to 110 v, the total load power (i.e. 500 w) is greater than the load threshold (i.e. 450 w), and each baseboard management controller 21, 31 generates the load-down command such that the total load power of each application circuit 22, 32 is less than or equal to the load threshold. Conversely, when the voltage amplitude of the AC mains AC1 is equal to 220 v, the total load power (i.e. 500 w) is less than the load threshold (i.e. 900 w), and the load-down command is not generated by each baseboard management controller 21, 31.
To be particularly supplementary stated are: in this embodiment, the computer system includes two mainboards 2, 3, two baseboard management controllers 21, 31, and two application circuits 22, 32, but in other embodiments, the computer system may include only one mainboard, one baseboard management controller, and an application circuit, or include multiple mainboards, multiple corresponding baseboard management controllers, and multiple corresponding application circuits, without being limited thereto. In addition, in other embodiments, the voltage bridge controller 5 may be omitted, and the two baseboard management controllers 21 and 31 are electrically connected to the two power supply units 11 and 12 to obtain the voltage amplitude of the AC utility AC1, the first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value, and the total load power of each application circuit 22 and 32. That is, the main purpose of the voltage bridge controller 5 is to avoid the shortage of the number of input/output pins (pins) of the power supply units 11, 12 when the number of the baseboard management controllers is large.
In summary, one of the baseboard management controllers 21 and 31 determines the output power parameter according to the voltage amplitude of the AC utility AC1, so that each power supply unit 11 and 12 determines the rated output power of the at least one dc voltage according to the output power parameter. One of the power supply units 11, 12 operates in the start-up mode, and calculates the power supply state according to the rated output power of each power supply unit 11, 12, the operating state and the total load power of each application circuit 22, 32, so as to correctly control the other power supply unit 11, 12 to operate in one of the start-up mode and the non-start-up mode. In addition, when each baseboard management controller 21, 31 determines that the two power supply units 11, 12 need to output the dc voltages Vin1, vin2 simultaneously according to the voltage amplitude of the AC utility power AC1 received by the two power supply units 11, 12 to provide enough rated total output power, that is, when the total power usage of the load of each application circuit 22, 32 is satisfied, the warning message is generated to inform the manager or the user that the two power supply units 11, 12 of the computer system cannot provide the backup function, that is, the two power supply units 11, 12 have no Redundancy (Redundancy) power available. Furthermore, by determining the load threshold value of the application circuit 22, 32 according to the voltage amplitude of the AC utility power AC1 by each baseboard management controller 21, 31, the load lowering command is generated when the total load power of the application circuit 22, 32 is greater than or equal to the load threshold value, so as to achieve the purpose of the present invention.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. A computer system, comprising:
n application circuits, each of which receives at least one DC voltage as the operating power and consumes a corresponding total load power, N being a positive integer;
the power supply units are electrically connected with the N application circuits, each power supply unit is suitable for receiving alternating current commercial power, converting and outputting at least one direct current voltage when an operation state is a starting mode, not outputting the at least one direct current voltage when the operation state is a non-starting mode, storing a first input alternating current voltage value, a second input alternating current voltage value, a first output power value corresponding to the first input alternating current voltage value and a second output power value corresponding to the second input alternating current voltage value, and determining a rated output power of the at least one direct current voltage according to an output power parameter; and
N baseboard management controllers electrically connected to the power supply units,
one of the baseboard management controllers determines the output power parameter to be equal to the corresponding one of the first output power value and the second output power value according to the voltage amplitude of the AC mains supply corresponding to the first input AC voltage value and the second input AC voltage value, and transmits and stores the output power parameter to each power supply unit,
one power supply unit operates in the starting mode, and the other power supply unit is controlled to operate in one of the starting mode and the non-starting mode according to the rated output power of each power supply unit, the operating state and the total load power of each application circuit.
2. The computer system of claim 1, further comprising a voltage bridge controller electrically connected between the two power supply units and the N baseboard management controllers and the N application circuits, wherein each power supply unit can detect and store the voltage amplitude of the AC mains supply, the voltage bridge controller receives the at least one DC voltage from the two power supply units to output to each application circuit, and detects and stores the total power of the load of each application circuit, the voltage bridge controller can also receive an inquiry command to read the first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value and the voltage amplitude of the AC mains supply stored by each power supply unit,
The inquiry command is generated by one of the baseboard management controllers, so that the voltage bridging controller can obtain the first input alternating voltage value, the second input alternating voltage value, the first output power value, the second output power value, the voltage amplitude of the alternating current commercial power and the total load power of each application circuit stored in each power supply unit.
3. The computer system of claim 1, wherein when one of the power supply units is operated in the start-up mode and the other one of the power supply units is operated in the no-start mode, the power supply unit operated in the start-up mode calculates a power supply state equal to a sum of the total power of the loads of each of the application circuits divided by the rated output power of the power supply unit operated in the start-up mode, and when the power supply unit operated in the start-up mode determines that the power supply state is greater than a predetermined first safe operation threshold, the other one of the power supply units is controlled to be operated in the start-up mode instead.
4. The computer system of claim 1, wherein when the two power supply units operate in the start-up mode, one of the power supply units calculates a power supply state equal to a sum of the total power of the load of each application circuit divided by a sum of the rated output powers of the two power supply units operating in the start-up mode, and when one of the power supply units determines that the power supply state is less than a predetermined second safe operation threshold, the other power supply unit is controlled to operate instead in the no-start-up mode.
5. The computer system of claim 1, wherein each baseboard management controller determines a load threshold value corresponding to each application circuit according to the voltage amplitude of the AC mains, the load threshold value is smaller than a rated total output power, the magnitude of the load threshold value is related to the magnitude of the rated total output power, the rated total output power is equal to the sum of the rated output powers of the two power supply units operating in the start-up mode,
the N baseboard management controllers are also respectively and electrically connected with the N application circuits, and when one of the baseboard management controllers judges that the total load power of the corresponding application circuit is greater than or equal to the corresponding load critical value, the corresponding baseboard management controller is informed to generate a load reducing instruction to the corresponding application circuit, so that the total load power consumed by the corresponding application circuit is reduced.
6. The power management method is suitable for a computer system, and the computer system comprises N application circuits, two power supply units and N baseboard management controllers, wherein N is a positive integer, and the power management method comprises the following steps:
(a) Receiving at least one DC voltage as the operating power by each application circuit and consuming the total power of a corresponding load;
(b) Each power supply unit is suitable for receiving alternating current commercial power, converting and outputting at least one direct current voltage when an operation state is a starting mode, and not outputting the at least one direct current voltage when the operation state is a non-starting mode, storing a first input alternating current voltage value, a second input alternating current voltage value, a first output power value corresponding to the first input alternating current voltage value and a second output power value corresponding to the second input alternating current voltage value, and determining a rated output power of the at least one direct current voltage according to an output power parameter;
(c) Determining that the output power parameter is equal to the corresponding one of the first output power value and the second output power value according to the voltage amplitude of the alternating current commercial power by one of the baseboard management controllers, corresponding to the first input alternating current voltage value and the second input alternating current voltage value, and transmitting and storing the output power parameter to each power supply unit; and
(d) By means of one of the power supply units operating in the start-up mode and according to the rated output power of each power supply unit, the operating state and the total load power of each application circuit, the other power supply unit is controlled to operate in one of the start-up mode and the non-start-up mode.
7. The method of claim 6, wherein the computer system further comprises a voltage bridge controller, the method further comprising steps (e) and (f),
in step (b), each power supply unit can detect and store the voltage amplitude of the AC mains supply, and
in step (e), the voltage bridging controller receives the at least one DC voltage from the two power supply units to output to each application circuit, and detects and stores the total load power of each application circuit,
in step (f), the voltage bridge controller can also receive an inquiry command to read the first input ac voltage value, the second input ac voltage value, the first output power value, the second output power value and the voltage amplitude of the ac mains supply stored in each power supply unit,
In step (c), one of the baseboard management controllers generates the query command to obtain the first input ac voltage value, the second input ac voltage value, the first output power value, the second output power value, the voltage amplitude of the ac mains supply, and the total load power of each application circuit stored in each power supply unit by the voltage bridge controller.
8. The method of claim 6, wherein in step (d), when one of the power supply units is operated in the start-up mode and the other power supply unit is operated in the no-start mode, the power supply unit operated in the start-up mode calculates a power supply state equal to a sum of the total power of the loads of the application circuits divided by the rated output power of the power supply unit operated in the start-up mode, and when the power supply unit operated in the start-up mode determines that the power supply state is greater than a predetermined first safe operation threshold, the other power supply unit is controlled to be operated in the start-up mode instead.
9. The method of claim 6, wherein in step (d), when the two power supply units are operated in the start-up mode, one of the power supply units calculates a power supply state equal to a sum of the total power of the load of each application circuit divided by a sum of the rated output powers of the two power supply units operated in the start-up mode, and when one of the power supply units determines that the power supply state is less than a predetermined second safe operation threshold, the other power supply unit is controlled to be operated in the non-start-up mode instead.
10. The power management method according to claim 6, further comprising step (g):
determining a load threshold value corresponding to each application circuit according to the voltage amplitude of the AC mains supply by each baseboard management controller, wherein the load threshold value is smaller than a rated total output power, the magnitude of the load threshold value is related to the magnitude of the rated total output power, the rated total output power is equal to the sum of the rated output powers of the two power supply units operating in the starting mode, and
when one of the baseboard management controllers judges that the total load power of the corresponding application circuit is greater than or equal to the corresponding load critical value, the corresponding baseboard management controller is informed to generate a load reducing instruction to the corresponding application circuit, so that the total load power consumed by the corresponding application circuit is reduced.
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