Power supply control method, power supply device, electronic device, and computer program product

Abstract

Embodiments of the present application provide a power supply control method, a power supply device, an electronic device, and a computer program product, which relate to the field of computers. The method includes: detecting the actual total load of the power supply device; determining a target total load interval where the actual total load is located, different total load intervals are associated with different total power supply loss curves, and each total power supply loss curve includes at least one total power supply loss curve segment; determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target total power supply loss curve associated with the target total load interval; controlling the power supply units with the target number to be in an active state. Through the present application, the problem of resource waste is solved, that is, determining the load rate corresponding to a relatively high efficiency of the active power supply unit according to the empirical value, then determining the number of active power supply units according to the total power supply load and the load rate, and controlling the corresponding number of power supply units to work.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of computers. Specifically, the present application relates to a power supply control method, a power supply device, an electronic device, and a computer program product. Background Art

[0002] In a full rack server, a centralized power supply technology can be used to supply power to server nodes. That is, a Powershelf (power supply rack) is set in the cabinet, and the output power is supplied to the copper bars at the rear of the cabinet. The server nodes connected to the copper bars obtain power from the copper bars. Multiple PSUs (Power Supply Units) are set inside the Powershelf. The input alternating current of the PSU is converted into direct current after power conversion and output to the copper bars.

[0003] Multiple PSUs inside the Powershelf support two modes: Active (active, outputting power) and Standby (sleeping, not outputting power). In related technologies, the load rate corresponding to a higher efficiency of the active PSU is determined according to empirical values, and then the number of active PSUs is determined according to the total load and the load rate. The remaining PSUs are set to the sleep mode. However, the total power supply loss in the power supply control method in related technologies is not the minimum value, resulting in a certain amount of resource waste. Summary of the Invention

[0004] Embodiments of the present application provide a power supply control method, a power supply device, an electronic device, and a computer program product, so as to at least solve the problem of resource waste in related technologies, where the load rate corresponding to a higher efficiency of the active power supply unit is determined according to empirical values, and then the number of active power supply units is determined according to the total power supply load and the load rate of the active power supply unit, and the corresponding number of power supply units is controlled to work.

[0005] According to an embodiment of the present application, a power supply control method is provided, including: detecting the actual total load of a power supply device, where the power supply device includes a plurality of power supply units; determining a target total load range in which the actual total load is located, where different total load ranges are associated with different total power supply loss curves, and each total power supply loss curve represents the relationship between the total power supply loss and the number of active power supply units. Each total power supply loss curve includes at least one total power supply loss curve segment, and different total power supply loss curve segments represent the relationship between the total power supply loss and the number of active power supply units under different load rate ranges of the active power supply units. The load rate is the ratio of the total load to the number of active power supply units; according to the target total power supply loss curve associated with the target total load range, determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized, where the actual total power supply loss includes the actual dynamic power supply loss of the active power supply units and the actual static power supply loss of the dormant power supply units, and the target number is the number of active power supply units that need to be set; controlling the power supply units of the target number to be in an active state.

[0006] In an exemplary embodiment, the relationship between the total power supply loss and the number of active power supply units under different load rate ranges of the active power supply units is determined in the following manner: for a target load rate range among different load rate ranges, determining the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range; according to the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range, and the relationship between the load rate of the active power supply units and the number of active power supply units, determining the relationship between the total power supply loss and the number of active power supply units under the target load rate range.

[0007] In an exemplary embodiment, the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range is determined in the following manner: determining the relationship between the dynamic power supply loss and the load rate of the active power supply units under the target load rate range to obtain a dynamic loss relationship; determining the relationship between the static power supply loss and the load rate of the active power supply units under the target load rate range to obtain a static loss relationship; according to the static loss relationship and the dynamic loss relationship, determining the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range.

[0008] In an exemplary embodiment, determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target total power supply loss curve associated with the target total load range includes: when the actual total load is within the target total load range, if the power supply total loss and the number of active power supply units are both inversely correlated when the number of active power supply units is different, then determining the total number of power supply units of the power supply device as the target number.

[0009] In an exemplary embodiment, different total load ranges include a first total load range, a second total load range, a third total load range, and a fourth total load range. Among them, the upper limit of the fourth total load range is equal to the lower limit of the third total load range, the upper limit of the third total load range is equal to the lower limit of the second total load range, the upper limit of the second total load range is equal to the lower limit of the first total load range, the lower limit of the first total load range is equal to half of the maximum total load of the power supply device, the lower limit of the second total load range is the total load value corresponding to the inflection point of the rising power supply total loss when the total load is less than the lower limit of the first total load range, and the lower limit of the third total load range is the total load value corresponding to the inflection point of the falling power supply total loss when the total load is less than the lower limit of the second total load range.

[0010] In an exemplary embodiment, in the first total load range, the load rate of the active power supply units is within the first load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target total power supply loss curve associated with the target total load range includes: when the target total load range is the first total load range, obtaining the first relationship associated when the load rate of the active power supply units in the first total load range is within the first load rate range, where the first relationship indicates an inverse correlation between the power supply total loss and the number of active power supply units; determining the total number of power supply units of the power supply device as the target number according to the first relationship.

[0011] In an exemplary embodiment, in the case of a second total load range, when the number of active power supply units is different, the load rate of the active power supply units is in a first load rate range or a second load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target power supply total loss curve associated with the target total load range includes: in the case where the target total load range is the second total load range, obtaining a first relationship associated with the load rate of the active power supply units in the first load rate range and a second relationship associated with the load rate of the active power supply units in the second load rate range under the second total load range, where the first relationship and the second relationship respectively indicate that the total power supply loss and the number of active power supply units are inversely related; determining the total number of power supply units of the power supply device as the target number according to the first relationship and the second relationship.

[0012] In an exemplary embodiment, in the case of a third total load range, when the number of active power supply units is different, the load rate of the active power supply units is in a first load rate range or a second load rate range or a third load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target power supply total loss curve associated with the target total load range includes: in the case where the target total load range is the third total load range, obtaining a first relationship associated with the load rate of the active power supply units in the first load rate range, a second relationship associated with the load rate of the active power supply units in the second load rate range, and a third relationship associated with the load rate of the active power supply units in the third load rate range under the third total load range, where the first relationship and the second relationship respectively indicate that the total power supply loss and the number of active power supply units are inversely related, and the third relationship indicates that the total power supply loss and the number of active power supply units are positively related; determining that the actual total power supply loss is minimized when the actual total load is at the lower limit of the second load rate range according to the first relationship, the second relationship, and the third relationship, and determining the target number when the actual total power supply loss is minimized based on the actual total load and the lower limit of the second load rate range.

[0013] In an exemplary embodiment, determining the target number when the actual total power supply loss is minimized based on the actual total load and the lower limit of the second load rate range includes: calculating the product of the rated power of the power supply unit and the lower limit of the second load rate range to obtain the set load of each active power supply unit; determining the target number according to the ratio of the actual total load to the set load of each active power supply unit.

[0014] In an exemplary embodiment, in the case of the fourth total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range or the third load rate range or the fourth load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. The upper limit of the fourth load rate range is equal to the ratio of the lower limit of the third total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss is minimized under the actual total load according to the target total power supply loss curve associated with the target total load range includes: in the case where the target total load is in the fourth total load range, obtaining the first relationship associated when the load rate of the active power supply units in the fourth total load range is in the first load rate range, the second relationship associated when it is in the second load rate range, the third relationship associated when it is in the third load rate range, and the fourth relationship associated when it is in the fourth load rate range. Among them, the first relationship, the second relationship, and the fourth relationship respectively indicate that the total power supply loss is inversely related to the number of active power supply units, and the third relationship indicates that the total power supply loss is positively related to the number of active power supply units; determining the target number of active power supply units when the actual total power supply loss is minimized under the actual total load according to the first relationship, the second relationship, the third relationship, and the fourth relationship.

[0015] In an exemplary embodiment, determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the first relationship, the second relationship, the third relationship, and the fourth relationship includes: determining the set number of active power supply units when the actual total power supply loss is minimized based on the actual total load and the lower limit of the second load rate interval, controlling the load rates of the active power supply units of the set number of power supply units of the power supply device to be all at the lower limit of the second load rate interval, and recording the input power of the power supply device to obtain the first input power; controlling all the active power supply units of the power supply units of the power supply device to be in the active state, and recording the input power of the power supply device to obtain the second input power; in the case where the first input power is less than the second input power, determining the set number as the target number; in the case where the first input power is greater than or equal to the second input power, determining the total number of the power supply units of the power supply device as the target number.

[0016] In an exemplary embodiment, the lower limit of the second total load interval is determined in the following manner: controlling the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the first total load interval, and keeping all the power supply units of the power supply device in the active state, continuously recording the difference between the input power and the output power of the power supply device until the difference continuously decreases and an inflection point of increase appears, and determining the load corresponding to the inflection point of increase as the lower limit of the second total load interval; the lower limit of the third total load interval is determined in the following manner: controlling the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the second total load interval, and keeping all the power supply units of the power supply device in the active state, continuously recording the difference between the input power and the output power of the power supply device until the difference continuously increases and an inflection point of decrease appears, and determining the load corresponding to the inflection point of decrease as the lower limit of the third total load interval.

[0017] According to another embodiment of the present application, there is provided a power supply device, including: a plurality of power supply units; a controller, and the controller controls a target number of the plurality of power supply units to be in the active state according to the power supply control method.

[0018] According to still another embodiment of the present application, there is further provided an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0019] According to still another embodiment of the present application, there is further provided a computer program product, including a computer program, and when the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0020] According to another embodiment of the present application, a computer-readable storage medium is further provided. A computer program is stored in the computer-readable storage medium, wherein the computer program is configured to execute the steps in any one of the above method embodiments when running.

[0021] Through the present application, the actual total load of the power supply device is monitored in real time, and then the monitored total load is located within a target total load interval among multiple total load intervals, and a power supply total loss curve matching the target total load interval is obtained. Each power supply total loss curve includes at least one power supply total loss curve segment, which characterizes the relationship between the power supply total loss and the number of active power supply units under the corresponding load rate interval. Since the power supply total loss in the target power supply total loss curve includes the power supply dynamic loss of the active power supply units and the power supply static loss of the dormant power supply units, the target number of active power supply units with the minimum power supply total loss is determined according to the target power supply total loss curve, and the power supply units with the target number are controlled to be in the active state, and the remaining power supply units are controlled to be in the dormant state, so that the power supply device can not only meet the power demand of the server, but also reduce the dynamic loss and static loss of unnecessary power supply units. Thus, the problem of resource waste in the related art, where the load rate corresponding to a higher efficiency of the active power supply units is determined according to empirical values, and then the number of active power supply units is determined according to the total power supply load and the load rate of the active power supply units, and the power supply units with the corresponding number are controlled to work, is solved, and the effect of optimizing the power efficiency of the entire power supply device and reducing the operation cost is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic diagram of the front of the cabinet of an AI supernode full cabinet server according to an embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of the back of the cabinet of an AI supernode full cabinet server according to an embodiment of the present application;

[0025] Figure 3 It is a connection schematic diagram of a computing node and a switching node of an AI supernode full cabinet server according to an embodiment of the present application Figure 1 ;

[0026] Figure 4Schematic diagram of the connection between the computing node and the switching node of an AI supernode whole cabinet server according to an embodiment of the present application Figure 2 ;

[0027] Figure 5 Schematic diagram of the connection between the computing node and the switching node of an AI supernode whole cabinet server according to an embodiment of the present application Figure 3 ;

[0028] Figure 6 Flowchart of the power supply control method according to an embodiment of the present application;

[0029] Figure 7 Relationship curve between the efficiency and load rate of the active power supply unit according to an embodiment of the present application;

[0030] Figure 8 Total power supply loss curve associated with the first total load interval according to an embodiment of the present application;

[0031] Figure 9 Total power supply loss curve associated with the second total load interval according to an embodiment of the present application;

[0032] Figure 10 Total power supply loss curve associated with the third total load interval according to an embodiment of the present application;

[0033] Figure 11 Total power supply loss curve associated with the fourth total load interval according to an embodiment of the present application;

[0034] Figure 12 Structural block diagram of the power supply control device according to an embodiment of the present application. Detailed implementation manners

[0035] In the following, embodiments of the present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0037] With the continuous development of artificial intelligence technology, the training and inference of AI (Artificial Intelligence) models have attracted increasing attention. As the key infrastructure supporting the training and inference of AI models, the new generation of computing cluster architectures are facing severe performance challenges. The marginal benefit of the performance of a single server processor is decreasing, approaching the physical limit, and it is difficult to meet the continuous growing demand for computing power of large AI models. At the same time, the strategy of horizontally expanding the computing cluster by simply increasing the number of servers has also encountered bottlenecks in efficiency and scalability, facing challenges in aspects such as cost, data synchronization, and energy consumption, which hinder the efficient execution of large-scale parallel computing. Against this background, the AI supernode whole cabinet system has emerged. It systematically integrates multiple groups of GPU (Graphics Processing Unit) computing units and switching units through an innovative topology, comprehensively optimizes in aspects such as multi-source computing power integration, high-speed advanced interconnection, heat dissipation, high-power-density power supply, and whole cabinet management, and provides a scalable high-bandwidth domain (HBD, HighBandwidth Domain) supernode system with 32 cards or more to meet the needs of cutting-edge large model training and inference.

[0038] Figure 1 It is a schematic diagram of the front of the cabinet of an AI supernode whole cabinet server according to an embodiment of the present application. As Figure 1 shown, the number of Us represents the number of layers of the cabinet of the whole cabinet server, and the height of each U position can be adjusted. Generally, but not limited to, the square hole bars of each node of the cabinet can be set to three specifications: OU (48mm), RU (44.45mm), or SU (46.5mm). The components of the server can be deployed dispersedly in each layer of the whole cabinet of the server. For example, a management switch can be deployed at the 44OU and 42OU positions, a cable management tray can be deployed at the 43OU position, Powershelf (power rack, used to provide centralized power management for the devices in the server rack) nodes can be deployed at the 37 - 38OU positions and the 5 - 6OU positions, Rack Stiffener (rack reinforcement, used to increase the structural strength and stability of the server rack) nodes can be deployed at the 36OU position and the 7OU position, and CDU (Cooling Distribution Unit, a cooling distribution unit used to manage and distribute coolant or cold air) nodes can be deployed at the 1 - 4OU positions. Figure 1 In the shown distribution, the components to be deployed at the 39 - 41OU positions are not considered for the time being, so they are marked as the NA (Not Applicable) layer. In actual applications, specific functional components can be considered to be deployed in the NA layer according to the functional requirements of the server. The computing nodes are placed on the upper and lower sides of the cabinet respectively (for example Figure 1For the 28OU - 35OU and 8OU - 15OU deployments shown in [reference], computing nodes are deployed, and the switching nodes are placed in the middle of the cabinet (for example Figure 1 For the 16OU - 27OU deployment shown in [reference], switching nodes are deployed. Such a design can make the deployment of power supply cables and communication cables more balanced. However Figure 1 What is shown in [reference] is just a typical configuration, and the number of switching nodes and the number of computing nodes can be adjusted according to the actual situation.

[0039] Figure 2 is a schematic diagram of the back of a cabinet of an AI super - node whole - cabinet server according to an embodiment of the present application. As Figure 2 shown, the back of the whole - cabinet server mainly includes three components: Busbar (busway), Manifold (manifold), and Cable Tray (cable tray). Among them, the Busbar is located in the middle (or on one side), and the Powershelf nodes are connected to the Busbar to supply power to the whole cabinet. The Cable Tray is located on the left and right sides of the Busbar. The Cable Tray is used to connect the high - speed signals of the computing nodes and the switching nodes according to the designed topological interconnection relationship. The Manifold is located on the left and right sides at the back of the cabinet, providing water inlet and outlet, and providing a liquid path for liquid cooling of the whole cabinet. These components work together to ensure the efficient and safe operation of the power supply and cooling system of the whole - cabinet server.

[0040] Figure 3 is a schematic diagram of the connection between the computing nodes and the switching nodes of an AI super - node whole - cabinet server according to an embodiment of the present application Figure 1 As Figure 3As shown, #1 to #N are N computing nodes. It is possible but not limited to deploy 1 CPU (Central Processing Unit) on each computing node. The CPU can be but not limited to hang 4 GPUs through a PCIe (Peripheral Component Interconnect Express) switch chip. Taking the example of deploying 16 computing nodes in an AI all-in-one cabinet server, there are a total of 16 × 4 = 64 GPUs in this AI all-in-one cabinet server. If N computing nodes are deployed in the AI all-in-one cabinet server, there are a total of 4 × N GPUs in this AI all-in-one cabinet server. The computing node can be but not limited to also deploy DPU (Data Processing Unit) network cards, storage devices, and BMC (Baseboard Management Controller) management modules. The storage device can be but not limited to an SSD (Solid State Drive). Figure 3 The shown Switch Node 1 to Switch Node M are M switch nodes. It is possible but not limited to have one MAC (Media Access Control) chip on each switch node. The high-speed signals of the switch nodes and the computing nodes are interconnected through a Cable Tray. In the AI all-in-one cabinet server, all the computing nodes and switch nodes are connected to the Rack Cable Tray (cable tray inside or near the rack) through high-density connectors to achieve Serdes (Serializer / Deserializer) high-speed interconnection between all the GPUs in the AI all-in-one cabinet server. Figure 4 is a schematic diagram of the connection between the computing nodes and the switch nodes of an AI supernode all-in-one cabinet server according to an embodiment of the present application Figure 2 , the above-mentioned Serdes high-speed interconnection method between all the GPUs is as Figure 4 shown. It should be noted that the solution of full interconnection of the computing nodes through the switch nodes in the AI all-in-one cabinet server needs to ensure that the high-speed signal resources of each GPU in each computing node are evenly distributed to each switch node. This is a Scale up topology. Figure 5 is a schematic diagram of the connection between the computing nodes and the switch nodes of an AI supernode all-in-one cabinet server according to an embodiment of the present application Figure 3 , such as Figure 5As shown, computing nodes 1-8 are interconnected through switching nodes 1-8. The connector of each computing node inside the AI all-in-one cabinet server is connected to 4 GPUs. The signals at the same positions of 8 computing nodes fill up one switch (i.e., switching node). As Figure 5 shown, the computing node signals and switching node signals with the same number have a connection relationship.

[0041] In this embodiment, a power supply control method is provided for powering the above-mentioned AI all-in-one cabinet server. Figure 6 It is a flowchart of the power supply control method according to the embodiment of the present application. As Figure 6 shown, the process includes the following steps:

[0042] Step S602, detect the actual total load of the power supply device, where the power supply device includes multiple power supply units.

[0043] Among them, the power supply device can be a Powershelf (power supply rack). The power supply device is a centralized power management system including multiple power supply units (PSUs, Power Supply Unit). The input of the PSU can be 220VAC, and after power conversion, it can be converted to 54VDC and output to the busbar. The actual total load of the power supply device refers to the total power obtained by all current server nodes in the cabinet from the busbar, that is, the total electric power supplied by all active PSUs. Among them, the execution subject of the above steps can be the baseboard management controller, but it is not limited thereto.

[0044] Step S204, determine the target total load range where the actual total load is located. Among them, different total load ranges are associated with different total power supply loss curves. Each total power supply loss curve characterizes the relationship between the total power supply loss and the number of active power supply units. Each total power supply loss curve includes at least one total power supply loss curve segment. Different total power supply loss curve segments characterize the relationship between the total power supply loss and the number of active power supply units under different load rate ranges of the active power supply units. The load rate is the ratio of the total load to the number of active power supply units.

[0045] Based on the entire load range, the total power supply load is divided into multiple ranges. For example, the total load heavy load range, the total load medium load range, the total load light load range, and the total load ultra-light load range. Since all PSUs can be set to be active and supply power during normal power supply, and each active PSU evenly divides the load, or some PSUs can be set to be active and supply power, while some other PSUs are in the sleep state. Therefore, under different total load ranges, as the number of active PSUs is different, the load rate range where the load rate of the active PSUs may fall is different.

[0046] Since the active PSUs have high efficiency in some load rate intervals and low load rates in other intervals, based on the efficiency of the active PSUs at different load rates and the static power supply losses of the dormant PSUs, the relationship between the total power supply losses of the active PSUs at different load rate intervals and the number of active PSUs is determined, obtaining different total power supply loss curve segments. Then, according to the total power supply loss curve segments associated with the load rate intervals where the load rate of the active PSUs in a total load interval may fall, the total power supply loss curve associated with this total load interval is combined. Different total load intervals are associated with different total power supply loss curves. To determine the target total power supply loss curve matching the actual total load, the target total load interval where the actual total load is located is first determined.

[0047] Step S606: According to the target total power supply loss curve associated with the target total load interval, determine the target number of active power supply units when the actual total power supply loss under the actual total load is minimized. Here, the actual total power supply loss includes the actual dynamic power supply loss of the active power supply units and the actual static power supply loss of the dormant power supply units, and the target number is the number of active power supply units that need to be set.

[0048] Among them, the target total power supply loss curve is a curve used to describe how the total power supply loss (including the dynamic power supply loss of the active power supply units and the static power supply loss of the dormant power supply units) changes with the number of active power supply units within the target total load interval. According to this curve, the number of active power supply units when the actual total power supply loss under the actual total load is minimized is determined, which is the target number.

[0049] Step S608: Control the power supply units with the target number to be in the active state.

[0050] That is, controlling the power supply units with the target number to be in the active state and controlling the remaining power supply units of the power supply device to be in the dormant state can ensure that the actual total power supply loss after the actual dynamic power supply loss of the active power supply units of the power supply device is superimposed on the actual static power supply loss of the dormant power supply units can reach the minimum.

[0051] Through the above steps, the actual total load of the power supply device is monitored in real time, and then the monitored total load is located within a target total load interval among multiple total load intervals, and the power supply total loss curve matching the target total load interval is obtained. Each power supply total loss curve includes at least one power supply total loss curve segment, which characterizes the relationship between the power supply total loss and the number of active power supply units under the corresponding load rate interval. Since the power supply total loss in the target power supply total loss curve includes the power supply dynamic loss of the active power supply units and the power supply static loss of the dormant power supply units, the target number of active power supply units when the power supply total loss is minimized is determined according to the target power supply total loss curve, and the power supply units with the target number are controlled to be in the active state, and the remaining power supply units are controlled to be in the dormant state, so that the power supply device can not only meet the power demand of the server, but also reduce the dynamic loss and static loss of unnecessary power supply units. Thus, the problem of resource waste in the related art, where the load rate corresponding to a higher efficiency of the active power supply units is determined according to empirical values, and then the number of active power supply units is determined according to the total power supply load and the load rate of the active power supply units, and the power supply units with the corresponding number are controlled to work, is solved, and the effect of optimizing the power efficiency of the entire power supply device and reducing the operation cost is achieved.

[0052] In an exemplary embodiment, the relationship between the power supply total loss and the number of active power supply units under different load rate intervals of the active power supply units is determined in the following manner: for the target load rate interval among different load rate intervals, the relationship between the power supply total loss and the load rate of the active power supply units under the target load rate interval is determined; according to the relationship between the power supply total loss and the load rate of the active power supply units under the target load rate interval, and the relationship between the load rate of the active power supply units and the number of active power supply units, the relationship between the power supply total loss and the number of active power supply units under the target load rate interval is determined.

[0053] It should be noted that different load rate intervals can be divided based on the total load interval. For example, the total load interval is divided into: total load heavy load interval, total load medium load interval, total load light load interval, and total load ultra-light load interval, and the load rate interval is correspondingly divided into: load rate heavy load interval, load rate medium load interval, load rate light load interval, and load rate ultra-light load interval. Among them, the upper and lower limits of each load rate interval are the ratio of the upper and lower limits of the corresponding level of the total load interval to the number of all PSUs of the power supply device.

[0054] First, the efficiency values of the active PSUs are different at different load rates, and the level of efficiency affects the power supply total loss. Figure 7 is the relationship curve between the efficiency and the load rate of the active power supply units according to the embodiment of the present application, as Figure 7As shown, in the heavy load rate range, as the load rate increases, the efficiency slowly decreases (50% is the optimal efficiency point); in the medium load rate range, as the load rate increases, the efficiency slowly increases; in the light load rate range, as the load rate increases, the efficiency rapidly increases; and in the ultra-light load rate range, as the load rate increases, the efficiency rapidly increases. Within each load rate range, the relationship between the total power supply loss and the load rate of the active power supply unit is determined by experimental methods.

[0055] Next, the relationship between the load rate of the active power supply unit and the number of active power supply units is determined. As the number of active power supply units increases, the load rate of each PSU will decrease accordingly. That is, there is an inverse correlation between the load rate of the active power supply unit and the number of active power supply units. The target load rate range refers to any one of multiple load rate ranges. Through this inverse correlation and the relationship between the total power supply loss and the load rate of the active power supply unit within the target load rate range, the relationship between the total power supply loss and the number of active power supply units under this target load rate range can be determined.

[0056] In this embodiment, based on the relationship between the total power supply loss and the load rate of the active power supply unit under the target load rate range, and the inverse correlation between the load rate of the active power supply unit and the number of active power supply units, the relationship between the total power supply loss and the number of active power supply units under the target load rate range can be determined, laying a foundation for determining different total power supply loss curve segments and further determining each total power supply loss curve.

[0057] In an exemplary embodiment, the relationship between the total power supply loss and the load rate of the active power supply unit under the target load rate range is determined in the following manner: Determine the relationship between the dynamic power supply loss and the load rate of the active power supply unit under the target load rate range to obtain the dynamic loss relationship; determine the relationship between the static power supply loss and the load rate of the active power supply unit under the target load rate range to obtain the static loss relationship; and based on the static loss relationship and the dynamic loss relationship, determine the relationship between the total power supply loss and the load rate of the active power supply unit under the target load rate range.

[0058] It should be noted that in the related art, it is considered that the dormant PSU has no loss, and only the active PSUs are considered when determining the total power supply loss. However, in this embodiment, it is considered that there is also a certain static loss in the dormant PSUs, and the number of dormant PSUs will also affect the total loss. Under different total loads and different numbers of active PSUs, the changing trends of these two loss curves are different, and the total power supply loss is non-monotonic and varies differently under different loads.

[0059] Therefore, in this embodiment, the total power supply loss is set as the superimposed value of the dynamic loss of the active PSUs and the static loss of the inactive PSUs. The total load in the obtained total power supply loss curve includes the dynamic power supply loss of the active power supply units and the static power supply loss of the dormant power supply units. When determining the number of active power supply units to be set according to the target total power supply loss curve associated with the target total load range, it avoids the problem of resource waste in the related art where the total power supply loss only considers the dynamic loss of the active PSUs, determines the number of active PSUs based on the dynamic loss, and controls the operation of the corresponding number of power supply units.

[0060] In an exemplary embodiment, different total load ranges include a first total load range, a second total load range, a third total load range, and a fourth total load range. Among them, the upper limit of the fourth total load range is equal to the lower limit of the third total load range, the upper limit of the third total load range is equal to the lower limit of the second total load range, the upper limit of the second total load range is equal to the lower limit of the first total load range, the lower limit of the first total load range is equal to half of the maximum total load of the power supply device, the lower limit of the second total load range is the total load value corresponding to the rising inflection point of the total power supply loss when the total load is less than the lower limit of the first total load range, and the lower limit of the third total load range is the total load value corresponding to the falling inflection point of the total power supply loss when the total load is less than the lower limit of the second total load range.

[0061] Among them, the first total load range, the second total load range, the third total load range, and the fourth total load range are the total load heavy load range, the total load medium load range, the total load light load range, and the total load ultra-light load range respectively. It should be noted that the division method of the total load range is related to the load rate of the active PSUs. Considering that an active PSU has the highest efficiency when its load rate is 50%, all the PSUs of the power supply device are set to be active and all are greater than or equal to 50% load rate, and the total power supply load at this time is determined as the lower limit of the first total load range (the critical value of the total load heavy load), that is, the lower limit of the first total load range is equal to half of the maximum total load of the power supply device. Considering that the total power supply loss will first continuously decrease and then increase when the total load is less than the lower limit of the first total load range, and a rising inflection point appears, the lower limit of the second total load range is set as the total load value corresponding to the rising inflection point of the total power supply loss. Considering that the total load will first continuously increase and then decrease when the total load is less than the lower limit of the second total load range, and a falling inflection point appears, the lower limit of the third total load range is set as the total load value corresponding to the falling inflection point.

[0062] In an exemplary embodiment, the lower limit of the second total load range is determined as follows: control the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the first total load range, and keep all power supply units of the power supply device in an active state. Continuously record the difference between the input power and the output power of the power supply device until the difference continuously decreases and an inflection point of increase appears. Determine the load corresponding to the inflection point of increase as the lower limit of the second total load range; the lower limit of the third total load range is determined as follows: control the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the second total load range, and keep all power supply units of the power supply device in an active state. Continuously record the difference between the input power and the output power of the power supply device until the difference continuously increases and an inflection point of decrease appears. Determine the load corresponding to the inflection point of decrease as the lower limit of the third total load range.

[0063] That is, after the lower limit value of the first total load range, continuously decrease the load, and always keep all PSUs active. Continuously record the difference between the input power and the output power values, that is, the total power supply loss. The loss should continuously decrease until an inflection point of increase appears. At this time, the total load is the lower limit value of the second total load range (the critical value of the medium load in the total load). After the lower limit value of the second total load range, continuously decrease the load, and always keep all PSUs active. Continuously record the difference between the input power and the output power values, that is, the total power supply loss. The loss should continuously increase until an inflection point of decrease appears. At this time, the load is the lower limit value of the third total load range (the critical value of the light load in the total load).

[0064] This embodiment takes into account that the load rates of active PSUs will be different according to the number of active PSUs in different total load ranges, and different load rate curves can be drawn. Based on the relationship between the total power supply loss and the number of active PSUs, the first total load range, the second total load range, the third total load range, and the fourth total load range are determined, laying a foundation for determining the number of active PSUs with the minimum total power supply loss under the actual total load.

[0065] In an exemplary embodiment, determining the target number of active power supply units when the actual power supply loss is the smallest under the actual total load according to the target power supply loss curve associated with the target total load range includes: when the actual total load is within the target total load range, if the power supply loss and the number of active power supply units are inversely correlated when the number of active power supply units is different, then determine the total number of power supply units of the power supply device as the target number.

[0066] It should be noted that when the number of active power supply units is different, the total power supply loss is inversely correlated with the number of active power supply units, indicating that the total dynamic loss of the active PSUs and the total static loss of the dormant PSUs under the same number of active PSUs are superimposed. As the number of active PSUs increases, the total power supply loss decreases. Therefore, setting all PSUs to the active state and determining the total number of all PSUs as the target number of active PSUs lays a foundation for optimizing the power efficiency of the power supply device and reducing the operating cost.

[0067] In an exemplary embodiment, in the first total load range, the load rate of the active power supply units is in the first load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the total number of all power supply units. According to the target power supply total loss curve associated with the target total load range, determining the target number of active power supply units when the actual power supply total loss under the actual total load is minimized includes: when the target total load range is the first total load range, obtaining the first relationship associated with the load rate of the active power supply units in the first load rate range in the first total load range, where the first relationship indicates that the power supply total loss is inversely correlated with the number of active power supply units; determining the total number of the power supply units of the power supply device as the target number according to the first relationship.

[0068] Figure 8 It is the power supply total loss curve associated with the first total load range according to the embodiment of the present application. As Figure 8 shown, the power supply total loss curve includes a curve segment corresponding to the first relationship associated with the first load rate range. The determination method of the first relationship associated with the first load rate range is as follows:

[0069] The loss of a single dormant PSU is a fixed value. There are multiple PSUs in the power supply device. As the number of active PSUs increases, the number of dormant PSUs decreases. Therefore, the static loss curve of the total dormant PSUs is a straight line, and its slope is the static loss value of a single dormant PSU. Therefore, the total static loss function of the dormant PSUs can be expressed as the total static loss of the dormant PSUs = k1×(12 - N), where k1 is a constant, that is, the static loss of each dormant PSU, N is the number of active PSUs, and 12 is the total number of all PSUs.

[0070] The efficiency value of a single PSU is the highest when the load rate is 50%. When the load rate is higher or lower than 50%, the efficiency will decrease and the efficiency loss will increase. With a fixed total load, the fewer the number of active PSUs, the greater the load rate of the PSU. When the load rate of each PSU > 50%, the lower the load rate of the PSU, the smaller the loss factor. When the load rate of each PSU < 50%, the higher the load rate of the PSU, the smaller the loss factor. Therefore, the relationship between the total loss of active PSUs and the load rate (efficiency) of the PSU is: the total loss of active PSUs = n × (load rate × 3.3kw) × (1 / η - 1) = load rate × (1 / η - 1), where 3.3kw is the rated power of a single PSU, η is the efficiency value of the PSU, and (1 / η - 1) is the loss factor of a single PSU. Therefore, the total dynamic loss of active PSUs is only related to the load rate (efficiency) of active PSUs and has nothing to do with the number of active PSUs.

[0071] It should be noted that when all PSUs are active, the load rate of each PSU is 50%. When the load rate of each active PSU changes within the range greater than 50% (the first load rate range), the number of active PSUs also changes. Within this range, as the number of active PSUs increases, the load rate of each active PSU decreases. According to the efficiency curve of the active PSU, the efficiency of the PSU increases and the loss decreases. That is, the total dynamic loss of active PSUs decreases as the number of active PSUs increases.

[0072] Since the total dynamic loss of active PSUs decreases as the number of active PSUs increases, the total static loss of dormant PSUs decreases monotonically. When the load rate of active PSUs changes within the range greater than 50% (for example, 90% - 50%), by superimposing the total dynamic loss of active PSUs and the total static loss of dormant PSUs with the same number of active PSUs and combining with the efficiency curve of active PSUs, it can be seen that within this range, as the number of active PSUs increases, the load rate of each active PSU decreases and the efficiency of a single PSU increases. That is, the loss reduction curve of active PSUs is superimposed on the loss reduction curve of dormant PSUs, and the total power supply loss curve is a decreasing curve.

[0073] Therefore, when the total load is overloaded: Depending on the number of active PSUs, the load rate of each active PSU is greater than 50%, and there is only one overloaded situation. The more the number of active PSUs, the lower the total loss. Therefore, all PSUs are set to be active. The overload critical value = (3.3kw × 12 × 50%) = 19.8kw. Therefore, when it is detected that the total load is greater than or equal to 19.8kw, set the number of active PSUs = 12. At this time, the total loss is the lowest. Therefore, 50% is the overload critical point of the PSU load rate (the lower limit of the first load rate range).

[0074] In this embodiment, considering that within the power supply loss curve associated with the first total load range, the total PSU loss changes monotonically with the number of active PSUs, the number of all PSUs is determined as the target number of active PSUs, laying a foundation for optimizing the power efficiency of the power supply equipment and reducing the operating cost.

[0075] In an exemplary embodiment, in the second total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units, and the upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target power supply total loss curve associated with the target total load range includes: in the case where the target total load range is the second total load range, obtaining the first relationship associated with the load rate of the active power supply units in the first load rate range and the second relationship associated with the load rate of the active power supply units in the second load rate range under the second total load range. Among them, the first relationship and the second relationship respectively indicate that the total power supply loss and the number of active power supply units are inversely correlated; determining the total number of power supply units of the power supply equipment as the target number according to the first relationship and the second relationship.

[0076] Figure 9 It is the power supply total loss curve associated with the second total load range according to the embodiment of the present application, as Figure 9 shown: The power supply total loss curve includes a curve segment corresponding to the first relationship associated with the first load rate range and a curve segment corresponding to the second relationship associated with the second load rate range. The first relationship associated with the first load rate range will not be elaborated. The determination method of the second relationship associated with the second load rate range is as follows:

[0077] The second total load range is also the medium load of the total load. When the total load is the medium load, when all PSUs are active, the load rate of each PSU is reduced compared to the heavy load. Therefore, both the single active PSU loss factor curve and the total dynamic loss curve of the active PSUs shift to the left. When all PSUs are active, the load rate of each active PSU is reduced from 50% to X%. The range of 50% - X% is the second load rate range.

[0078] When the load rate of each active PSU varies within the range of 50% - X%, the number of active PSUs also changes. Within this range, as the number of active PSUs increases, the load rate of each active PSU decreases. According to the efficiency curve of the active PSU, the efficiency of the active PSU decreases and the loss increases. That is, the total dynamic loss of the active PSU increases as the number of active PSUs increases.

[0079] Since the total dynamic loss of the active PSU increases as the number of active PSUs increases, while the total static loss of the dormant PSU monotonically decreases as the number of active PSUs increases. Therefore, when the load rate of the active PSU varies within the range of 50% - X%, by adding the total dynamic loss of the active PSU and the total static loss of the dormant PSU under the same number of active PSUs, and combining with the efficiency curve of the active PSU, it can be seen that the slope of the efficiency curve of a single active PSU is extremely low. As the number of active PSUs increases, after the load rate of each active PSU changes, the change in the efficiency of a single active PSU is not significant. Therefore, the increase in the total dynamic loss of the active PSU is not large, and the static loss of the dormant PSU dominates. Thus, the total power supply loss shows a downward trend.

[0080] Therefore, during the medium load in the total load: according to the different numbers of active PSUs, there are two situations for the load rate of each active PSU, namely 90% - 50% (heavy load) and 50% - X% (medium load). As the number of active PSUs increases, the total PSU loss curves for both heavy load and medium load of each active PSU load rate show a downward trend. That is, the first relationship and the second relationship indicate that the total power supply loss is inversely related to the number of active power supply units. The total PSU loss curve is monotonically decreasing. The more active PSUs there are, the lower the total loss. Therefore, setting all PSUs to be active results in the lowest total loss at this time. It should be noted that the medium load critical value = 12 × 3.3kw × X%. Therefore, X% (about 20%) can be calculated. 12 is the number of all PSUs, and this X% is the medium load critical point (the lower limit of the second load rate interval) of the PSU load rate.

[0081] The determination method of the lower limit of the second load rate interval is as follows: Starting from the lower limit value of the first total load interval, continuously reduce the load and always keep all PSUs active. Continuously record the difference between the input power and the output power values, that is, the total power supply loss. The loss should keep decreasing until an inflection point of increase appears. At this time, the total load is the lower limit value of the second total load interval (the medium load critical value of the total load).

[0082] This embodiment takes into account that within the power supply loss curve associated with the second total load interval, the total PSU loss monotonically changes with the number of active PSUs, and determines the number of all PSUs as the target number of active PSUs, laying a foundation for optimizing the power efficiency of the power supply equipment and reducing the operating cost.

[0083] In an exemplary embodiment, in the case of the third total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range or the third load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss is minimized under the actual total load according to the target power supply total loss curve associated with the target total load range includes: in the case where the target total load range is the third total load range, obtaining the first relationship associated with the load rate of the active power supply units in the first load rate range, the second relationship associated with the load rate of the active power supply units in the second load rate range, and the third relationship associated with the load rate of the active power supply units in the third load rate range under the third total load range. Among them, the first relationship and the second relationship respectively indicate that the total power supply loss and the number of active power supply units are inversely correlated, and the third relationship indicates that the total power supply loss and the number of active power supply units are positively correlated; determining that the actual total power supply loss is minimized when the actual total load is at the lower limit of the second load rate range according to the first relationship, the second relationship and the third relationship, and determining the target number when the actual total power supply loss is minimized based on the actual total load and the lower limit of the second load rate range.

[0084] Figure 10 is the total power supply loss curve associated with the third total load range according to the embodiment of the present application, as Figure 10 shown: The total power supply loss curve includes a curve segment corresponding to the first relationship associated with the first load rate range, a curve segment corresponding to the second relationship associated with the second load rate range, and a curve segment corresponding to the third relationship associated with the third load rate range. The determination methods of the first relationship associated with the first load rate range and the second relationship associated with the second load rate range will not be elaborated. The determination method of the third relationship associated with the third load rate range is as follows:

[0085] The third total load range is also the total load being lightly loaded. When the total load is lightly loaded, when all PSUs are active, the load rate of each PSU is lower than that in the medium load. Therefore, both the single active PSU loss factor curve and the total dynamic loss curve of the active PSUs shift to the left. When all PSUs are active, the load rate of each active PSU continues to decrease from X% to Y%, and the range of X%-Y% is the third load rate range.

[0086] When the load rate of each active PSU varies within the range of X% - Y%, the number of active PSUs also changes. Within this range, as the number of active PSUs increases, the load rate of each active PSU decreases. According to the efficiency curve of the active PSU, the efficiency of the active PSU decreases and the loss increases. That is, the total dynamic loss of the active PSU increases as the number of active PSUs increases.

[0087] Since the total dynamic loss of the active PSU increases as the number of active PSUs increases, while the total static loss of the dormant PSU monotonically decreases as the number of active PSUs increases. Therefore, when the load rate of the active PSU varies within the range of X% - Y%, by superimposing the total dynamic loss of the active PSU and the total static loss of the dormant PSU under the same number of active PSUs, and combining with the efficiency curve of the active PSU, it can be seen that the slope of the efficiency curve of a single active PSU is relatively high. As the number of active PSUs increases, after the load rate of each active PSU changes, the change in the efficiency of a single active PSU is obvious, and the increase in the total dynamic loss of the active PSU accounts for the main trend. Therefore, the total power supply loss increases.

[0088] Therefore, when the total load is lightly loaded, according to the different numbers of active PSUs, there are three situations for the load rate of each active PSU: 90% - 50% (heavy load), 50% - X% (medium load), and X% - Y% (light load). As the number of active PSUs increases, the total PSU loss curves for heavy load and medium load of each active PSU load rate both decrease. That is, the first relationship and the second relationship indicate that the total power supply loss is inversely related to the number of active power supply units; the total PSU loss curve for light load of each active PSU load rate rises. That is, the third relationship indicates that the total power supply loss is positively related to the number of active power supply units.

[0089] Therefore, the intersection point between the medium load and light load of the active PSU load rate (the lower limit of the second load rate range) is the lowest value of the total PSU loss. At this time, the load rate of the PSU is X%. Therefore, when it is detected that the total load is within the range from the medium load critical value to the light load critical value, making the load rate of each PSU be X% will result in the lowest loss at this time. It should be noted that the light load critical value = 12 × 3.3kw × Y%, so Y% (about a certain point between 20% - 10%) can be calculated. 12 is the number of all PSUs, and Y% is the light load critical point of the PSU load rate (the lower limit of the third load rate range).

[0090] The lower limit value of the third total load range is determined as follows: After the lower limit value of the second total load range, continuously reduce the load and always keep all PSUs active, and continuously record the difference between the input power and the output power value, that is, the total power supply loss. The loss should keep increasing until an inflection point of decrease appears. At this time, the load is the lower limit value of the third total load range (the light load critical value of the total load).

[0091] In an exemplary embodiment, determining the target number when the actual total power supply loss is minimized based on the actual total load and the lower limit of the second load rate interval includes: calculating the product of the rated power of the power supply unit and the lower limit of the second load rate interval to obtain the set load of each active power supply unit; determining the target number according to the ratio of the actual total load to the set load of each active power supply unit.

[0092] Exemplarily, when the load of each active PSU is at X% (the lower limit of the second load rate interval, that is, the medium load critical point), the number of active PSUs = actual load / (3.3 kw × X%), and the result is rounded to obtain the set number, where 3.3 kw is the rated power of the PSU.

[0093] This embodiment takes into account that within the power supply loss curve associated with the third total load interval, the total PSU loss does not change monotonically with the number of active PSUs, and there is a minimum point of the total PSU loss. The number of active PSUs corresponding to the minimum point of the total PSU loss is determined as the target number of active PSUs, laying a foundation for optimizing the power efficiency of power supply equipment and reducing operating costs.

[0094] In an exemplary embodiment, in the fourth total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range or the third load rate range or the fourth load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. The upper limit of the fourth load rate range is equal to the ratio of the lower limit of the third total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target power supply total loss curve associated with the target total load range includes: when the target total load is in the fourth total load range, obtaining the first relationship associated with the load rate of the active power supply units in the first load rate range in the fourth total load range, the second relationship associated with the load rate in the second load rate range, the third relationship associated with the load rate in the third load rate range, and the fourth relationship associated with the load rate in the fourth load rate range. Among them, the first relationship, the second relationship, and the fourth relationship respectively indicate that the total power supply loss and the number of active power supply units are inversely correlated, and the third relationship indicates that the total power supply loss and the number of active power supply units are positively correlated; according to the first relationship, the second relationship, the third relationship, and the fourth relationship, determine the target number of active power supply units when the actual total power supply loss under the actual total load is minimized.

[0095] Figure 11 is the total power supply loss curve associated with the fourth total load range according to the embodiment of the present application, as Figure 11 shown: The total power supply loss curve includes the curve segment corresponding to the first relationship associated with the first load rate range, the curve segment corresponding to the second relationship associated with the second load rate range, the curve segment corresponding to the third relationship associated with the third load rate range, and the curve segment corresponding to the fourth relationship associated with the fourth load rate range. The determination methods of the first relationship associated with the first load rate range, the second relationship associated with the second load rate range, and the third relationship associated with the third load rate range will not be elaborated. The determination method of the fourth relationship associated with the fourth load rate range is as follows:

[0096] The fourth total load range means that the total load is an ultra-light load. When the total load is an ultra-light load and all PSUs are active, the load rate of each PSU decreases compared to the light load. Therefore, both the single-active PSU loss factor curve and the total dynamic loss curve of the active PSUs shift to the left. When all PSUs are active, the load rate of each active PSU continues to decrease from Y% to Z%. The range of Y% - Z% is the fourth load rate range. When the load rate of each active PSU varies within the range of Y% - Z%, the number of active PSUs also changes. Within this range, as the number of active PSUs increases, the load rate of each active PSU decreases. According to the efficiency curve of the active PSUs, the efficiency of the active PSUs decreases and the loss increases. That is, the total dynamic loss of the active PSUs increases as the number of active PSUs increases.

[0097] Since the total dynamic loss of the active PSUs increases as the number of active PSUs increases, while the total static loss of the dormant PSUs decreases monotonically as the number of active PSUs increases. Therefore, when the load rate of the active PSUs varies within the range of Y% - Z%, by adding the total dynamic loss of the active PSUs and the total static loss of the dormant PSUs under the same number of active PSUs and combining with the efficiency curve of the active PSUs, it can be seen that the slope of the efficiency curve of a single active PSU is relatively high. However, due to the too-light total load, when the number of active PSUs increases, the change in the load rate of each active PSU is too small, resulting in an insignificant change in the actual efficiency of a single active PSU. Therefore, the change in the loss of the active PSUs is not obvious, and the decrease in the loss of the dormant PSUs is the main trend. As a result, the total power supply loss decreases.

[0098] Therefore, when the total load is an ultra-light load, depending on the different numbers of active PSUs, there are four situations for the load rates of the active PSUs: 90% - 50% (heavy load), 50% - X% (medium load), X% - Y% (light load), and Y% - Z% (ultra-light load).

[0099] As the number of active PSUs increases, the total PSU loss curves for the heavy load and medium load of the load rates of the active PSUs both decrease. That is, the first relationship and the second relationship indicate that the total power supply loss is inversely related to the number of active power supply units; the total PSU loss curve for the light load of the load rate increases. That is, the third relationship indicates that the total power supply loss is positively related to the number of active power supply units; the total PSU loss curve for the ultra-light load of the load rate decreases. That is, the fourth relationship indicates that the total power supply loss is inversely related to the number of active power supply units.

[0100] Therefore, within the entire loss curve, there are two minimum points of the total PSU loss: one is when the number of active PSUs makes the load rate of the active PSUs at the medium load critical point (the lower limit of the second load rate interval), and the other is when the number of active PSUs is at the maximum value. Therefore, it is necessary to determine the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the first relationship, the second relationship, the third relationship, and the fourth relationship.

[0101] In an exemplary embodiment, determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the first relationship, the second relationship, the third relationship, and the fourth relationship includes: based on the actual total load and the lower limit of the second load rate interval, determining the set number of active power supply units when the actual total power supply loss is minimized, controlling the load rates of the active power supply units of the set number of power supply units of the power supply device to be all at the lower limit of the second load rate interval, and recording the input power of the power supply device to obtain the first input power; controlling all the active power supply units of the power supply device to be in the active state, and recording the input power of the power supply device to obtain the second input power; in the case where the first input power is less than the second input power, determining the set number as the target number; in the case where the first input power is greater than or equal to the second input power, determining the total number of the power supply units of the power supply device as the target number.

[0102] Exemplarily, make the load of each active PSU at X% (the lower limit of the second load rate interval, that is, the medium load critical point). At this time, the number of active PSUs = actual load / (3.3kw × X%), and round the result to obtain the set number. Among them, 3.3kw is the rated power of the PSU. At this time, record the input power as P1 (that is, the first input power).

[0103] Another way is to set the number of active PSUs to the total number of all active PSUs. At this time, record the input power to get P2 (that is, the second input power). Take the number of active PSUs corresponding to the smaller value of P1 and P2 as the target number. That is, set the number of these PSUs to be active, and also output the situation where the total power supply loss under the total load is the lowest.

[0104] This embodiment takes into account that within the power supply loss curve associated with the fourth total load interval, there are two minimum points of the total PSU loss. Compare the input powers under different numbers of active PSUs corresponding to the two minimum points of the total PSU loss, and determine the number of active PSUs corresponding to the lower input power as the target number of active PSUs, which lays a foundation for optimizing the power efficiency of the power supply device and reducing the operating cost.

[0105] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM (Read-Only Memory), RAM (Random Access Memory), magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0106] In this embodiment, a power supply device is further provided, including: a plurality of power supply units; a controller, and the controller controls a target number of power supply units among the plurality of power supply units to be in an active state according to a power supply control method.

[0107] In this embodiment, a power supply control device is further provided. This device is used to implement the above embodiments and preferred implementation manners, and those that have been described will not be repeated. As used hereinafter, the term "module" can be a combination of software and / or hardware that can implement a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0108] Figure 12 is a structural block diagram of a power supply control device according to an embodiment of the present application. As Figure 12 shown, the device includes:

[0109] A detection unit 1202, configured to detect the actual total load of the power supply device, where the power supply device includes a plurality of power supply units;

[0110] A first determination unit 1204, configured to determine the target total load range where the actual total load is located. Among them, different total load ranges are associated with different total power supply loss curves, and each total power supply loss curve represents the relationship between the total power supply loss and the number of active power supply units. Each total power supply loss curve includes at least one total power supply loss curve segment, and different total power supply loss curve segments represent the relationship between the total power supply loss and the number of active power supply units under different load rate ranges of the active power supply units. The load rate is the ratio of the total load to the number of active power supply units;

[0111] A second determination unit 1206 is configured to determine, according to a target total power supply loss curve associated with a target total load range, a target number of active power supply units when the actual total power supply loss under the actual total load is minimized, where the actual total power supply loss includes the actual dynamic power supply loss of the active power supply units and the actual static power supply loss of the dormant power supply units, and the target number is the number of active power supply units to be set.

[0112] A control unit 1208 is configured to control the power supply units with the target number to be in an active state.

[0113] In an exemplary embodiment, the relationship between the total power supply loss at different load ratios of the active power supply units and the number of active power supply units is determined in the following manner: for a target load ratio range in different load ratio ranges, determine the relationship between the total power supply loss at the target load ratio range and the load ratio of the active power supply units; according to the relationship between the total power supply loss at the target load ratio range and the load ratio of the active power supply units, and the relationship between the load ratio of the active power supply units and the number of active power supply units, determine the relationship between the total power supply loss at the target load ratio range and the number of active power supply units.

[0114] In an exemplary embodiment, the relationship between the total power supply loss at the target load ratio range and the load ratio of the active power supply units is determined in the following manner: determine the relationship between the dynamic power supply loss at the target load ratio range and the load ratio of the active power supply units to obtain a dynamic loss relationship; determine the relationship between the static power supply loss at the target load ratio range and the load ratio of the active power supply units to obtain a static loss relationship; according to the static loss relationship and the dynamic loss relationship, determine the relationship between the total power supply loss at the target load ratio range and the load ratio of the active power supply units.

[0115] In an exemplary embodiment, according to the target total power supply loss curve associated with the target total load range, the second determination unit 1206 is configured to: when the actual total load is within the target total load range, if the total power supply loss and the number of active power supply units are both inversely correlated when the number of active power supply units is different, determine the total number of power supply units of the power supply device as the target number.

[0116] In an exemplary embodiment, different total load ranges include a first total load range, a second total load range, a third total load range, and a fourth total load range. Among them, the upper limit of the fourth total load range is equal to the lower limit of the third total load range, the upper limit of the third total load range is equal to the lower limit of the second total load range, the upper limit of the second total load range is equal to the lower limit of the first total load range, the lower limit of the first total load range is equal to half of the maximum total load of the power supply device, the lower limit of the second total load range is the total load value corresponding to the rising inflection point of the total power supply loss when the total load is less than the lower limit of the first total load range, and the lower limit of the third total load range is the total load value corresponding to the falling inflection point of the total power supply loss when the total load is less than the lower limit of the second total load range.

[0117] In an exemplary embodiment, in the first total load range, the load rate of the active power supply units is in a first load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The second determination unit 1206 is configured to: when the target total load range is the first total load range, obtain the first relationship associated with the load rate of the active power supply units in the first load rate range in the first total load range, where the first relationship indicates an inverse correlation between the total power supply loss and the number of active power supply units; and determine the total number of power supply units of the power supply device as the target number according to the first relationship.

[0118] In an exemplary embodiment, in the second total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units, the upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units, and the lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The second determination unit 1206 is configured to: when the target total load range is the second total load range, obtain the first relationship associated with the load rate of the active power supply units in the first load rate range in the second total load range and the second relationship associated with the load rate of the active power supply units in the second load rate range, where the first relationship and the second relationship respectively indicate an inverse correlation between the total power supply loss and the number of active power supply units; and determine the total number of power supply units of the power supply device as the target number according to the first relationship and the second relationship.

[0119] In an exemplary embodiment, in the case of the third total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range or the third load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. The second determination unit 1206 is configured to: in the case where the target total load range is the third total load range, obtain the first relationship associated when the load rate of the active power supply units in the third total load range is in the first load rate range, the second relationship associated when it is in the second load rate range, and the third relationship associated when it is in the third load rate range. Among them, the first relationship and the second relationship respectively indicate that the total power supply loss is inversely related to the number of active power supply units, and the third relationship indicates that the total power supply loss is positively related to the number of active power supply units; determine that the actual total power supply loss is the smallest when the actual total load is at the lower limit of the second load rate range according to the first relationship, the second relationship, and the third relationship, and determine the target number when the actual total power supply loss is the smallest based on the actual total load and the lower limit of the second load rate range.

[0120] In an exemplary embodiment, determining the target number when the actual total power supply loss is the smallest based on the actual total load and the lower limit of the second load rate range includes: calculating the product of the rated power of the power supply unit and the lower limit of the second load rate range to obtain the set load of each active power supply unit; determining the target number according to the ratio of the actual total load to the set load of each active power supply unit.

[0121] In an exemplary embodiment, in the case of the fourth total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range or the third load rate range or the fourth load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units, and the lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units, and the lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. The upper limit of the fourth load rate range is equal to the ratio of the lower limit of the third total load range to the number of all power supply units. The second determination unit 1206 is configured to include: when the target total load is in the fourth total load range, obtaining the first relationship associated when the load rate of the active power supply units in the fourth total load range is in the first load rate range, the second relationship associated when it is in the second load rate range, the third relationship associated when it is in the third load rate range, and the fourth relationship associated when it is in the fourth load rate range. Among them, the first relationship, the second relationship, and the fourth relationship respectively indicate that the total power supply loss is inversely related to the number of active power supply units, and the third relationship indicates that the total power supply loss is positively related to the number of active power supply units; according to the first relationship, the second relationship, the third relationship, and the fourth relationship, determining the target number of active power supply units when the actual total power supply loss under the actual total load is the smallest.

[0122] In an exemplary embodiment, determining the target number of active power supply units when the actual total power supply loss under the actual total load is the smallest according to the first relationship, the second relationship, the third relationship, and the fourth relationship includes: based on the actual total load and the lower limit of the second load rate range, determining the set number of active power supply units when the actual total power supply loss is the smallest, controlling the load rate of the active power supply units of the set number of power supply units of the power supply device to be all at the lower limit of the second load rate range, and recording the input power of the power supply device to obtain the first input power; controlling all the active power supply units of the power supply device of the power supply device to be in the active state, and recording the input power of the power supply device to obtain the second input power; in the case where the first input power is less than the second input power, determining the set number as the target number; in the case where the first input power is greater than or equal to the second input power, determining the total number of the power supply units of the power supply device as the target number.

[0123] In an exemplary embodiment, the lower limit of the second total load range is determined as follows: control the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the first total load range, and keep all power supply units of the power supply device in an active state. Continuously record the difference between the input power and the output power of the power supply device until the difference continuously decreases and an inflection point of increase appears. Determine the load corresponding to the inflection point of increase as the lower limit of the second total load range; the lower limit of the third total load range is determined as follows: control the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the second total load range, and keep all power supply units of the power supply device in an active state. Continuously record the difference between the input power and the output power of the power supply device until the difference continuously increases and an inflection point of decrease appears. Determine the load corresponding to the inflection point of decrease as the lower limit of the third total load range.

[0124] It should be noted that the above-mentioned various units or modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned various modules are respectively located in different processors in any combination form.

[0125] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored. Wherein, the computer program is set to execute the steps in any one of the above method embodiments when running.

[0126] In an exemplary embodiment, the above-mentioned computer-readable storage medium may include, but is not limited to: various media such as USB flash drives, read-only memories (ROM for short), random access memories (RAM for short), mobile hard disks, magnetic disks or optical discs that can store computer programs.

[0127] An embodiment of the present application also provides an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor is set to run the computer program to execute the steps in any one of the above method embodiments.

[0128] In an exemplary embodiment, the above-mentioned electronic device may further include a transmission device and an input / output device. Wherein, the transmission device is connected to the above-mentioned processor, and the input / output device is connected to the above-mentioned processor.

[0129] An embodiment of the present application also provides a computer program product. The above-mentioned computer program product includes a computer program, and the computer program realizes the steps in any one of the above method embodiments when executed by a processor.

[0130] Embodiments of the present application further provide another computer program product, including a non-volatile computer-readable storage medium storing a computer program, and the steps in any of the above method embodiments are implemented when the computer program is executed by a processor.

[0131] Embodiments of the present application further provide a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the steps in any of the above method embodiments.

[0132] Specific examples in this embodiment may refer to the examples described in the above embodiments and exemplary embodiments, and will not be repeated here.

[0133] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device. They can be concentrated on a single computing device or distributed on a network composed of multiple computing devices. They can be implemented by program codes executable by the computing device. Thus, they can be stored in a storage device and executed by the computing device. And in some cases, the steps shown or described can be executed in a different order than here, or they can be separately made into individual integrated circuit modules, or multiple modules or steps among them can be made into a single integrated circuit module to implement. In this way, the present application is not limited to any specific combination of hardware and software.

[0134] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply control method, characterized in that, Including: Detecting the actual total load of a power supply device, where the power supply device includes multiple power supply units; Determining a target total load range in which the actual total load is located, where different total load ranges are associated with different total power supply loss curves, and each total power supply loss curve characterizes the relationship between the total power supply loss and the number of active power supply units. Each total power supply loss curve includes at least one total power supply loss curve segment, and different total power supply loss curve segments characterize the relationship between the total power supply loss and the number of active power supply units under different load rate ranges of the active power supply units. The load rate is the ratio of the total load to the number of active power supply units; According to the target total power supply loss curve associated with the target total load range, determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized, where the actual total power supply loss includes the actual dynamic power supply loss of the active power supply units and the actual static power supply loss of the dormant power supply units, and the target number is the number of active power supply units that need to be set; Controlling the power supply units with the target number to be in an active state.

2. The method according to claim 1, characterized in that, The relationship between the total power supply loss and the number of active power supply units under different load rate ranges of the active power supply units is determined by the following method: For a target load rate range in different load rate ranges, determining the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range; According to the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range, and the relationship between the load rate of the active power supply units and the number of active power supply units, determining the relationship between the total power supply loss and the number of active power supply units under the target load rate range.

3. The method according to claim 2, wherein The relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range is determined by the following method: Determining the relationship between the dynamic power supply loss and the load rate of the active power supply units under the target load rate range to obtain a dynamic loss relationship; Determining the relationship between the static power supply loss and the load rate of the active power supply units under the target load rate range to obtain a static loss relationship; According to the static loss relationship and the dynamic loss relationship, determining the relationship between the total power supply loss and the load rate of the active power supply units under the target load rate range.

4. The method according to claim 1, characterized in that Determining the target number of active power supply units when the actual total power supply loss under the actual total load is minimized according to the target total power supply loss curve associated with the target total load range includes: When the actual total load is within the target total load range, if the number of active power supply units is different and the total power supply loss and the number of active power supply units are inversely correlated, then determining the total number of power supply units of the power supply device as the target number.

5. The method according to claim 1, characterized in that The different total load ranges include a first total load range, a second total load range, a third total load range, and a fourth total load range. Among them, the upper limit of the fourth total load range is equal to the lower limit of the third total load range, the upper limit of the third total load range is equal to the lower limit of the second total load range, the upper limit of the second total load range is equal to the lower limit of the first total load range, the lower limit of the first total load range is equal to half of the maximum total load of the power supply device, the lower limit of the second total load range is the total load value corresponding to the inflection point of the increase in the total power supply loss when the total load is less than the lower limit of the first total load range, and the lower limit of the third total load range is the total load value corresponding to the inflection point of the decrease in the total power supply loss when the total load is less than the lower limit of the second total load range.

6. The method according to claim 5, wherein In the first total load range, the load rate of the active power supply units is in the first load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. Determining the target number of active power supply units when the actual power supply loss under the actual total load is minimized according to the target power supply loss curve associated with the target total load range includes: When the target total load range is the first total load range, obtaining a first relationship associated with the load rate of the active power supply units in the first load rate range in the first total load range, where the first relationship indicates an inverse correlation between the total power supply loss and the number of active power supply units; Determining the total number of power supply units of the power supply device as the target number according to the first relationship.

7. The method according to claim 5, wherein In the second total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units, the upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units, and the lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. Determining the target number of active power supply units when the actual power supply loss under the actual total load is minimized according to the target power supply loss curve associated with the target total load range includes: When the target total load range is the second total load range, obtaining a first relationship associated with the load rate of the active power supply units in the first load rate range in the second total load range, and a second relationship associated with the load rate of the active power supply units in the second load rate range, where the first relationship and the second relationship respectively indicate an inverse correlation between the total power supply loss and the number of active power supply units; Determining the total number of power supply units of the power supply device as the target number according to the first relationship and the second relationship.

8. The method according to claim 5, characterized in that, In the case of the third total load range, when the number of active power supply units is different, the load rate of the active power supply units is in the first load rate range or the second load rate range or the third load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss is minimized under the actual total load according to the target power supply total loss curve associated with the target total load range includes: In the case where the target total load range is the third total load range, obtain the first relationship associated when the load rate of the active power supply units in the third total load range is in the first load rate range, the second relationship associated when it is in the second load rate range, and the third relationship associated when it is in the third load rate range. Among them, the first relationship and the second relationship respectively indicate that the total power supply loss is inversely related to the number of active power supply units, and the third relationship indicates that the total power supply loss is positively related to the number of active power supply units; Determine that the actual total power supply loss is the smallest when the actual total load is at the lower limit of the second load rate range according to the first relationship, the second relationship, and the third relationship, and determine the target number when the actual total power supply loss is the smallest based on the actual total load and the lower limit of the second load rate range.

9. The method according to claim 8, wherein Determining the target number when the actual total power supply loss is the smallest based on the actual total load and the lower limit of the second load rate range includes: Calculate the product of the rated power of the power supply unit and the lower limit of the second load rate range to obtain the set load of each active power supply unit; Determine the target number according to the ratio of the actual total load to the set load of each active power supply unit.

10. The method according to claim 5, wherein When the number of active power supply units is different in the fourth total load range, the load rate of the active power supply units is in the first load rate range, or the second load rate range, or the third load rate range, or the fourth load rate range. The lower limit of the first load rate range is the ratio of the lower limit of the first total load range to the number of all power supply units. The upper limit of the second load rate range is equal to the ratio of the lower limit of the first total load range to the number of all power supply units. The lower limit of the second load rate range is the ratio of the lower limit of the second total load range to the number of all power supply units. The upper limit of the third load rate range is equal to the ratio of the lower limit of the second total load range to the number of all power supply units. The lower limit of the third load rate range is the ratio of the lower limit of the third total load range to the number of all power supply units. The upper limit of the fourth load rate range is equal to the ratio of the lower limit of the third total load range to the number of all power supply units. Determining the target number of active power supply units when the actual total power supply loss is minimized under the actual total load according to the target power supply total loss curve associated with the target total load range includes: When the target total load is in the fourth total load range, obtain the first relationship associated when the load rate of the active power supply units in the fourth total load range is in the first load rate range, the second relationship associated when it is in the second load rate range, the third relationship associated when it is in the third load rate range, and the fourth relationship associated when it is in the fourth load rate range. Among them, the first relationship, the second relationship, and the fourth relationship respectively indicate that the total power supply loss and the number of active power supply units are inversely correlated, and the third relationship indicates that the total power supply loss and the number of active power supply units are positively correlated; According to the first relationship, the second relationship, the third relationship, and the fourth relationship, determine the target number of active power supply units when the actual total power supply loss is minimized under the actual total load.

11. The method according to claim 10, wherein According to the first relationship, the second relationship, the third relationship, and the fourth relationship, determining the target number of active power supply units when the actual total power supply loss is minimized under the actual total load includes: Based on the actual total load and the lower limit of the second load rate range, determine the set number of active power supply units when the actual total power supply loss is minimized. Control the load rate of the active power supply units of the set number of power supply units of the power supply device to be all at the lower limit of the second load rate range, and record the input power of the power supply device to obtain the first input power; Control all power supply units of the power supply device to be in an active state, and record the input power of the power supply device to obtain the second input power; When the first input power is less than the second input power, determine the set number as the target number; When the first input power is greater than or equal to the second input power, the total number of power supply units of the power supply device is determined as the target number.

12. The method according to claim 5, wherein The lower limit of the second total load range is determined by the following method: Control the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the first total load range, and keep all power supply units of the power supply device in the active state. Continuously record the difference between the input power and the output power of the power supply device until the difference continuously decreases and an inflection point of increase appears. Determine the load corresponding to the inflection point of increase as the lower limit of the second total load range; The lower limit of the third total load range is determined by the following method: Control the actual total load of the power supply device to continuously decrease when it is less than the lower limit of the second total load range, and keep all power supply units of the power supply device in the active state. Continuously record the difference between the input power and the output power of the power supply device until the difference continuously increases and an inflection point of decrease appears. Determine the load corresponding to the inflection point of decrease as the lower limit of the third total load range.

13. A power supply device, characterized in that, Comprising: A plurality of power supply units; A controller, which controls a target number of power supply units among the plurality of power supply units to be in an active state according to the method described in any one of claims 1 to 12.

14. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, the steps of the method described in any one of claims 1 to 12 are implemented.

15. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method described in any one of claims 1 to 12 are implemented.

Images