WO2021056911A1 - 一种电源冷冗余配置方法及装置 - Google Patents

一种电源冷冗余配置方法及装置 Download PDF

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WO2021056911A1
WO2021056911A1 PCT/CN2019/129986 CN2019129986W WO2021056911A1 WO 2021056911 A1 WO2021056911 A1 WO 2021056911A1 CN 2019129986 W CN2019129986 W CN 2019129986W WO 2021056911 A1 WO2021056911 A1 WO 2021056911A1
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psu
efficiency
configuration point
power supply
point
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PCT/CN2019/129986
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English (en)
French (fr)
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熊斌
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苏州浪潮智能科技有限公司
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Priority to US17/763,427 priority Critical patent/US11815972B2/en
Publication of WO2021056911A1 publication Critical patent/WO2021056911A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2015—Redundant power supplies

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  • the present invention relates to the field of power supplies, and in particular to a method and device for cold redundant configuration of power supplies.
  • a redundant power supply system two or more power supply units (PSUs) are usually included, and multiple PSUs equally bear the system load, but this will result in low power utilization efficiency. If the output voltage of one of the PSUs is adjusted to realize that the PSU bears all the loads, the other PSUs are in the standby state to ensure that when the power supply PSU fails, the standby PSU can smoothly receive the load to ensure that the entire power system can be used uninterrupted, that is, cold Redundant (Cold Redundant) mode.
  • PSUs power supply units
  • the power configuration points in the cold redundancy mode are determined by using the load current segmented algebraic calculation method, where the power configuration point is the standby PSU and switches to The voltage value of the power supply PSU.
  • the control logic of the Cold Redundant BUS voltage often becomes chaotic, causing the server to be integrated.
  • the power supply of the machine system is unstable.
  • the present application provides a method and device for power supply cold redundancy configuration.
  • a method for configuring power supply cold redundancy includes:
  • the efficiency-load curve is a curve obtained by testing the PSU in advance
  • the PSU works in the high efficiency interval, and when the voltage of the PSU is higher than the preset power configuration point, the PSU works in the low efficiency interval ,
  • the preset power configuration point is recalculated; otherwise, the preset power configuration point is determined as the power configuration point; wherein, the power configuration point is the switch from the standby PSU to the power supply PSU when the cold redundant configuration is set Voltage value.
  • the determining the high efficiency interval and the low efficiency interval of the efficiency-load curve of the power supply unit PSU includes:
  • the interval from 0 to the load value of the PSU is determined as a low efficiency interval, and the interval from the load value of the PSU to 100 is determined as a high efficiency interval.
  • the recalculating the preset power configuration point includes:
  • the preset power configuration point is recalculated according to the connection point between the high efficiency interval and the low efficiency interval.
  • the recalculating the preset power configuration point includes:
  • the preset power configuration point is recalculated multiple times.
  • the preset power supply configuration points include calculations by using load current segmental algebra.
  • the power supply includes a DC power supply.
  • a second aspect of the present application provides a power supply cold redundancy configuration device, the device includes:
  • Test unit determination unit and calculation unit
  • the test unit is used to test that the efficiency-load curve is a curve obtained by testing the PSU in advance;
  • the determining unit is used to determine the high efficiency interval and the low efficiency interval of the efficiency-load curve of the power supply unit PSU;
  • the calculation unit is configured to: if the voltage of the PSU is lower than a preset power configuration point, the PSU works in the high efficiency interval, and when the voltage of the PSU is higher than the preset power configuration point, the PSU When working in the low efficiency interval, the preset power configuration point is recalculated; otherwise, the preset power configuration point is determined as the power configuration point; wherein, the power configuration point is when the cold redundant configuration is set The standby PSU is switched to the voltage value of the power supply PSU.
  • the device further includes:
  • the obtaining unit is configured to obtain the maximum efficiency point of the PSU on the efficiency-load curve.
  • the PSU efficiency curve is introduced as the criterion, and the power supply configuration points in the cold redundancy mode are determined by the combination of the PSU efficiency curve and the load current segmental algebra.
  • the new calculation method effectively takes into account the retention of threshold redundancy and ensures The control logic of CR BUS voltage makes the power supply of the whole server system more stable.
  • the reference PSU efficiency curve it effectively guarantees that the PSU modules powered by the system can work in a more optimal efficiency range after the switching action of the power configuration point, thereby reducing the total power consumption of the system.
  • Figure 1 shows the efficiency-load curve measured by the PS-2162-NA (1600W/12.12V) power supply
  • Fig. 2 is a flowchart of a method for power supply cold redundancy configuration provided by this application;
  • Figure 3 shows the efficiency-load curves of the three power supplies
  • FIG. 4 is a schematic diagram of the structure of a power supply cold redundancy configuration device provided by this application.
  • the power configuration points in the cold redundancy mode are determined by using the load current segmented algebraic calculation method, where the power configuration point is the standby PSU and switches to The voltage value of the power supply PSU.
  • the control logic of the Cold Redundant BUS voltage often becomes chaotic, causing the server to be integrated.
  • the power supply of the machine system is unstable.
  • Table 1 The method of load current segmented algebraic calculation is used to determine each power supply configuration point in the cold redundancy mode
  • the power supply of this specification is set to 8V according to the power supply characteristics, and the collected load current is 44.88A. At this time, only one power supply is working, so the cold redundancy is determined by using the load current segmented algebraic calculation method
  • the ON power configuration point of PSU2 in the mode is 2.72V, that is, when the voltage value is higher than 2.72V, PSU2 is turned on.
  • the power supply of this specification is set to 8V according to the power supply characteristics, and the collected load current is 40.39A.
  • the load current is calculated by the segmental algebraic method Determine that the OFF power configuration point of PSU2 in the cold redundancy mode is 1.224V, that is, turn off PSU2 when the voltage is lower than 1.224V, and so on.
  • the voltage control logic will be disordered when determining the configuration points of each power supply in the cold redundancy mode by using the load current segmented algebraic calculation method, such as the 4.96V voltage of Von3 and the 4.56 voltage of Voff4 in the above example. Specifically, if the voltage is 4.8V at this time, there should be two power supplies, PSU1 and PSU2. When the voltage rises to 4.96V, there are three power supplies PSU1, PSU2 and PSU3. When the voltage rises to 6.72V, there are Four power supplies PSU1, PSU2, PSU3 and PSU4 work. But when the voltage drops to 4.96V again, there are four power supplies PSU1, PSU2, PSU3 and PSU4 working.
  • the PSU works best in the load range of 20%-80%, but when it works in the range of 0-20% or 80%-100%, the efficiency is very low, so it should be avoided as far as possible. 20% or higher than 80% range.
  • the interval where the efficiency is lower than 20% or higher than 80% is called the low-efficiency interval, and other intervals can be called the high-efficiency interval, and the PSU should be avoided to work in the low-efficiency interval.
  • the efficiency of Von2 before switching is 34%, and the efficiency after switching is changed to 17%. That is, after the operation of switching the power configuration point, the PSU that originally worked in the high-efficiency range becomes working and In the low efficiency zone, power loss will increase at this time.
  • the applicant provides a power supply cold redundancy configuration method, which introduces the PSU efficiency curve as a criterion, and determines the power supply configuration points in the cold redundancy mode by using the PSU efficiency curve and the load current segmental algebraic combination.
  • the new calculation idea effectively takes into account the retention of threshold redundancy, and ensures the control logic of the CR BUS voltage, so that the power supply of the server system is more stable.
  • the reference PSU efficiency curve it effectively guarantees that the PSU modules powered by the system can work in a more optimal efficiency range after the switching action of the power configuration point, thereby reducing the total power consumption of the system.
  • FIG. 2 is a flowchart of a power supply cold redundancy configuration method provided by the present application.
  • the efficiency-load curve of the PSU works best in the load range of 20%-80%, but when it works in the range of 0-20% or 80%-100%, the efficiency is very low, so it should be avoided as far as possible. 20% or higher than 80% range.
  • the interval where the efficiency is lower than 20% or higher than 80% is called the low-efficiency interval, and other intervals can be called the high-efficiency interval, and the PSU should be avoided to work in the low-efficiency interval.
  • the PSU works in the high efficiency range, and when the voltage of the PSU is higher than the preset power configuration point, the PSU works at the low Efficiency interval, the preset power configuration point is recalculated; otherwise, the preset power configuration point is determined as the power configuration point; wherein, the power configuration point is that the standby PSU switches to power supply when the cold redundant configuration is set The voltage value of the PSU.
  • the turn-off voltage of PSU2 is 1.52V and the turn-on voltage is 3.22V; the turn-off voltage of PSU3 is 3.3V and the turn-on voltage is 5.15V; the turn-off voltage of PSU4 is 5.2V and the turn-on voltage is 7.07V. And closing does not cause the problem of voltage logic confusion. And after the power switching action, the problem of PSU working in the extremely low efficiency range will not occur, and the power loss will not increase.
  • the efficiency-load curve of the other three power supplies is shown in Figure 3. It can be seen that the efficiency curve changes with the load from light load to heavy load (full load) from low to high to high. After the point, it starts to decrease again.
  • the maximum efficiency point of the PSU in the entire interval can be obtained by testing the corresponding efficiency-load curve of the specific PSU to be about 30%, and the 0 to 30% interval can be determined as the low efficiency interval, and 30% to 100% The interval of is determined as the high efficiency interval.
  • the preset power configuration point can be recalculated according to the 30% connection point of the high efficiency interval and the low efficiency interval.
  • the recalculation can be calculated multiple times until the voltage of the PSU no longer appears A phenomenon in which the PSU works in the high efficiency interval before the preset power configuration point, and the PSU works in the low efficiency interval after the preset power configuration point.
  • the method for determining the high-efficiency interval and the low-efficiency interval is not limited, and all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present invention.
  • preset power configuration point can be calculated by using the load current subdivision algebra.
  • the power supply in this application may be a DC power supply.
  • the embodiment of the present invention also provides a corresponding device.
  • the working principle will be described in detail below with reference to the accompanying drawings.
  • FIG. 4 is a structural diagram of a power supply cold redundancy configuration device provided by the present invention. As shown in FIG. 4, the device may include the following units:
  • test unit 410 A test unit 410, a determination unit 420, and a calculation unit 430;
  • the testing unit 410 is configured to test that the efficiency-load curve is a curve obtained by testing the PSU in advance;
  • the determining unit 420 is configured to determine the high efficiency interval and the low efficiency interval of the efficiency-load curve of the power supply unit PSU;
  • the calculation unit 430 is configured to: if the voltage of the PSU is lower than the preset power configuration point, the PSU works in the high efficiency interval, and when the voltage of the PSU is higher than the preset power configuration point, the If the PSU works in the low efficiency interval, the preset power configuration point is recalculated; otherwise, the preset power configuration point is determined as the power configuration point; wherein, the power configuration point is the cold redundant configuration setting When the standby PSU is switched to the voltage value of the power supply PSU.
  • the device further includes: an obtaining unit, configured to obtain the maximum efficiency point of the PSU on the efficiency-load curve.

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Abstract

一种电源冷冗余配置方法及装置，所述方法包括：确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间；其中，所述效率-负载曲线为预先通过测试所述PSU得到的曲线（201）；若所述PSU的电压在预设电源配置点之前，所述PSU工作在所述高效率区间，在预设电源配置点之后，所述PSU工作在所述低效率区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值（202）。通过采用PSU效率曲线与负载电流分段代数结合的方式确定冷冗余模式中的各电源配置点，新的计算思路有效的考虑到阈值冗余的保留，保证了CR BUS电压的控制逻辑，从而使服务器整机系统的供电更稳定。

Description

一种电源冷冗余配置方法及装置
本申请要求于2019年09月27日提交中国专利局、申请号为201910927238.1、发明名称为“一种电源冷冗余配置方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电源领域，尤其是涉及一种电源冷冗余配置方法及装置。
背景技术
随着服务器技术的发展，对服务器的供电要求越来越高，必须使用双电源或更多电源等冗余电源系统为服务器整机系统进行供电。在冗余电源系统中，通常包括两个或两个以上的电源供应单元(Power Supply unit，PSU)，多个PSU平均承担系统负荷，但这会导致电源利用效率低。若将其中一个PSU的输出电压进行调整以实现该PSU承担所有负载，其余PSU处于待机状态，以保证供电PSU出现故障时，待机PSU可顺利接收负载以保证整个电源系统能不间断使用，即冷冗余(Cold Redundant)模式。
在实际应用中，当服务器整机系统采用冗余电源系统供电时，通过采用负载电流分段代数计算的方式确定冷冗余模式中的各电源配置点，其中，电源配置点为待机PSU切换为供电PSU的电压值。但是，采用上述技术方案对电源配置点进行配置后，尤其是针对N+N(N≥2)的供电方案，冷冗余总线(Cold Redundant BUS)电压的控制逻辑经常会出现混乱，导致服务器整机系统的供电不稳定。
发明内容
为解决上述问题，本申请提供一种电源冷冗余配置方法及装置。
在本申请第一方面提供了一种电源冷冗余配置方法，所述方法包括：
确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间；其中，所述效率-负载曲线为预先通过测试所述PSU得到的曲线；
若所述PSU的电压低于预设电源配置点时，所述PSU工作在所述高效率区间，所述PSU的电压高于预设电源配置点时，所述PSU工作在所述低效率 区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值。
可选的，所述确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间包括：
获得所述效率-负载曲线上的所述PSU的效率最大值点；
根据所述效率-负载曲线通过所述效率最大值点确定所述PSU的负载值；
将0至所述PSU的负载值的区间确定为低效率区间，将所述PSU的负载值至100的区间确定为高效率区间。
可选的，所述重新计算所述预设电源配置点包括：
根据所述高效率区间与所述低效率区间的连接点重新计算所述预设电源配置点。
可选的，所述重新计算所述预设电源配置点包括：
多次进行重新计算所述预设电源配置点。
可选的，所述预设电源配置点包括采用负载电流分段代数的方式计算得到。
可选的，所述电源包括直流电源。
在本申请第二方面提供了一种电源冷冗余配置装置，所述装置包括：
测试单元、确定单元与计算单元；
所述测试单元，用于测试所述效率-负载曲线为预先通过测试所述PSU得到的曲线；
所述确定单元，用于确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间；
所述计算单元，用于若所述PSU的电压低于预设电源配置点时，所述PSU工作在所述高效率区间，所述PSU的电压高于预设电源配置点时，所述PSU工作在所述低效率区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值。
可选的，所述装置还包括：
获取单元，用于获得所述效率-负载曲线上的所述PSU的效率最大值点。
相对于现有技术，本申请上述技术方案的优点在于：
引入PSU效率曲线作为判据，通过采用PSU效率曲线与负载电流分段代数结合的方式确定冷冗余模式中的各电源配置点，新的计算思路有效的考虑到阈值冗余的保留，保证了CR BUS电压的控制逻辑，从而使服务器整机系统的供电更稳定。同时，结合参考PSU效率曲线，有效保障在进行电源配置点的切换动作后，系统供能的PSU模块能工作于更优选的效率区间工作，进而降低系统总的功率耗损。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为PS-2162-NA(1600W/12.12V)电源测试出的效率-负载曲线；
图2为本申请提供的一种电源冷冗余配置方法的流程图；
图3为三种电源的效率-负载曲线；
图4为本申请提供的一种电源冷冗余配置装置结构的示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在实际应用中，当服务器整机系统采用冗余电源系统供电时，通过采用负载电流分段代数计算的方式确定冷冗余模式中的各电源配置点，其中，电 源配置点为待机PSU切换为供电PSU的电压值。但是，采用上述技术方案对电源配置点进行配置后，尤其是针对N+N(N≥2)的供电方案，冷冗余总线(Cold Redundant BUS)电压的控制逻辑经常会出现混乱，导致服务器整机系统的供电不稳定。
若供电方案为N+N(N＝2)，以规格为PS-2162-NA(1600W/12.12V)的电源为例，如下表1所示是四个电源采用负载电流分段代数计算的方式确定冷冗余模式中各电源配置点的计算结果。
表1 采用负载电流分段代数计算的方式确定冷冗余模式中各电源配置点
Figure PCTCN2019129986-appb-000001
以Von2的计算为例，该规格电源根据电源特性的设定值是8V，采集到负载电流是44.88A，此时只有一个电源工作，所以通过采用负载电流分段代数计算的方式确定冷冗余模式中的PSU2的ON电源配置点为2.72V，即当电压值高于2.72V时开启PSU2。同理，以Voff2的计算为例，该规格电源根据电源特性的设定值是8V，采集到负载电流是40.39A，此时有两个电源工作，所以通过采用负载电流分段代数计算的方式确定冷冗余模式中的PSU2的OFF电源配置点为1.224V，即当电压低于1.224V时关闭PSU2，依次类推。
通过采用负载电流分段代数计算的方式确定冷冗余模式中各电源的配置点会出现电压的控制逻辑混乱，如上述例子中Von3的4.96V电压与Voff4的4.56电压。具体来说，若此时电压为4.8V，应该有PSU1和PSU2两个电源工作，当电压上升至4.96V时，有PSU1、PSU2和PSU3三个电源工作，当电压上升至6.72V时，有PSU1、PSU2、PSU3和PSU4四个电源工作。但当电压再次下降至4.96V时，有PSU1、PSU2、PSU3和PSU4四个电源工作，当电压下降至4.8V时，有PSU1、PSU2、PSU3和PSU4四个电源工作，当电压下降至4.56V时，有PSU1、PSU2和PSU3三个电源工作，那么如果电压处于 4.8V时，到底应该有几个电源工作。显然由于Von3的4.96V电压与Voff4的4.56电压造成了电压逻辑的混乱。
通过采用负载电流分段代数计算的方式确定冷冗余模式中各电源的配置点不仅会出现电压的控制逻辑混乱，还会导致在进行电源切换动作后，出现PSU工作在极低的效率区间，尤其是在轻载的情况下。如图1所示，PS-2162-NA(1600W/12.12V)电源测试出的效率-负载曲线。
由图1可知，PSU在负载20％-80％的区间工作表现最好，但在0-20％或80％-100％的区间工作时，效率很低，所以应该尽量避免PSU工作在低于20％或高于80％的区间。效率低于20％或高于80％的区间称之为低效率区间，其他区间可以称之为高效率区间，应该尽量避免PSU工作于低效率区间。结合表1来看，Von2在切换前的效率是34％，执行切换动作后的效率变为17％，即在执行切换电源配置点的操作后，原本工作于高效率区间的PSU变为工作与低效率区间，此时会增加功率损耗。
基于此，申请人提供了一种电源冷冗余配置方法，引入PSU效率曲线作为判据，通过采用PSU效率曲线与负载电流分段代数结合的方式确定冷冗余模式中的各电源配置点，新的计算思路有效的考虑到阈值冗余的保留，保证了CR BUS电压的控制逻辑，从而使服务器整机系统的供电更稳定。同时，结合参考PSU效率曲线，有效保障在进行电源配置点的切换动作后，系统供能的PSU模块能工作于更优选的效率区间工作，进而降低系统总的功率耗损。
参见图2，图2是本申请提供的一种电源冷冗余配置方法的流程图。
201：确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间；其中，所述效率-负载曲线为预先通过测试所述PSU得到的曲线；
依然以PS-2162-NA(1600W/12.12V)电源为例，首先通过测试获得PSU的效率-负载曲线，即PS-2162-NA(1600W/12.12V)的效率-负载曲线。由图1可知，PSU在负载20％-80％的区间工作表现最好，但在0-20％或80％-100％的区间工作时，效率很低，所以应该尽量避免PSU工作在低于20％或高于80％的区间。效率低于20％或高于80％的区间称之为低效率区间，其他区间可以称之为高效率区间，应该尽量避免PSU工作于低效率区间。
202：若所述PSU的电压低于预设电源配置点时，所述PSU工作在所述高效率区间，所述PSU的电压高于预设电源配置点时，所述PSU工作在所述低效率区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值。
依然以供电方案为N+N(N＝2)，以规格为PS-2162-NA(1600W/12.12V)的电源为例，如下表所示是结合PSU效率-负载曲线与负载电流分段代数计算确定冷冗余模式中各电源配置点的计算结果。
表2 结合PSU效率-负载曲线与负载电流分段代数计算确定冷冗余模式中各电源配置点
Figure PCTCN2019129986-appb-000002
结合图1可知，若预设电源配置点为2.72V，会出现所述PSU的电压在预设电源配置点之前，所述PSU工作在所述高效率区间(34％)，在预设电源配置点之后，所述PSU工作在所述低效率区间(17％)的问题。所以此时应该重新计算预设电源配置点。通过计算当负载电流为53.13A时，预设电源配置点为3.22V，通过计算PSU的电压在预设电源配置点之前，所述PSU工作在所述高效率区间(40.25％)，在预设电源配置点之后，所述PSU工作在所述高效率区间(20.13％)，此时将将所述预设电源配置点3.22V确定为电源配置点，依次类推。
通过结合PSU效率-负载曲线与负载电流分段代数计算确定冷冗余模式中各电源配置点，不会再出现如上述例子中Von3的5.15V电压与Voff4的4.56V的电压的逻辑混乱的问题。具体来说，本例中PSU2关闭电压为1.52V，开启电压为3.22V；PSU3关闭电压为3.3V，开启电压为5.15V；PSU4关闭电压为5.2V，开启电压为7.07V，上述PSU的开启与关闭并不会导致电压的逻辑混乱的问题。且在进行电源切换动作后，不会出现PSU工作在极低的效率区间的 问题，不会增加功率损耗。
需要说明的是，如图3所示为另外三种电源的效率-负载曲线，可以看到其效率曲线随负载的变化由轻载到重载(满载)的变化趋势为由低至高，达到高点后又开始降低。可以通过对具体的PSU测试其对应的效率-负载曲线获得整个区间中PSU的效率最大值点约为30％，并以此将0至30％区间确定为低效率区间，将30％至100％的区间确定为高效率区间。
需要说明的是，可以根据所述高效率区间与所述低效率区间的连接点30％重新计算所述预设电源配置点，重新计算可以为所多次计算，直至不再出现PSU的电压在预设电源配置点之前，所述PSU工作在所述高效率区间，在预设电源配置点之后，所述PSU工作在所述低效率区间的现象。
需要说明的是，确定高效率区间与低效率区间的方法不限定，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，预设电源配置点可以采用负载电流分段代数的方式计算得到。
需要说明的是，本申请中的电源可以为直流电源。
基于以上实施例提供的方法，本发明实施例还提供了对应的装置，下面结合附图来详细说明其工作原理。
装置实施例
参见图4，图4是本发明提供的一种电源冷冗余配置装置的结构图，如图4所示，该装置可以包括以下单元：
测试单元410、确定单元420与计算单元430；
所述测试单元410，用于测试所述效率-负载曲线为预先通过测试所述PSU得到的曲线；
所述确定单元420，用于确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间；
所述计算单元430，用于若所述PSU的电压低于预设电源配置点时，所述PSU工作在所述高效率区间，所述PSU的电压高于预设电源配置点时，所述 PSU工作在所述低效率区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值。
需要说明的是，所述装置还包括：获取单元，用于获得所述效率-负载曲线上的所述PSU的效率最大值点。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于装置实施例而言，由于其基本相似于方法实施例，所以描述得比较简单，相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元及模块可以是或者也可以不是物理上分开的。另外，还可以根据实际的需要选择其中的部分或者全部单元和模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
以上所述仅是本发明的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (7)

  1. 一种电源冷冗余配置方法，其特征在于，包括：
    确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间；其中，所述效率-负载曲线为预先通过测试所述PSU得到的曲线；
    若所述PSU的电压低于预设电源配置点时，所述PSU工作在所述高效率区间，所述PSU的电压高于预设电源配置点时，所述PSU工作在所述低效率区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值。
  2. 根据权利要求1所述的方法，其特征在于，所述确定电源供应单元PSU的效率-负载曲线的高效率区间与低效率区间包括：
    获得所述效率-负载曲线上的所述PSU的效率最大值点；
    根据所述效率-负载曲线通过所述效率最大值点确定所述PSU的负载值；
    将0至所述PSU的负载值的区间确定为低效率区间，将所述PSU的负载值至100％的区间确定为高效率区间。
  3. 根据权利要求1所述的方法，其特征在于，所述重新计算所述预设电源配置点包括：
    根据所述高效率区间与所述低效率区间的连接点重新计算所述预设电源配置点。
  4. 根据权利要求1所述的方法，其特征在于，所述预设电源配置点包括采用负载电流分段代数的方式计算得到。
  5. 根据权利要求1所述的方法，其特征在于，所述电源包括直流电源。
  6. 一种电源冷冗余配置装置，其特征在于，包括：
    测试单元、确定单元与计算单元；
    所述测试单元，用于测试所述效率-负载曲线为预先通过测试所述PSU得到的曲线；
    所述确定单元，用于确定电源供应单元PSU的效率-负载曲线的高效率区 间与低效率区间；
    所述计算单元，用于若所述PSU的电压低于预设电源配置点时，所述PSU工作在所述高效率区间，所述PSU的电压高于预设电源配置点时，所述PSU工作在所述低效率区间，则重新计算所述预设电源配置点；否则，将所述预设电源配置点确定为电源配置点；其中，所述电源配置点为设定冷冗余配置时待机PSU切换为供电PSU的电压值。
  7. 根据权利要求6所述的装置，其特征在于，所述装置还包括：
    获取单元，用于获得所述效率-负载曲线上的所述PSU的效率最大值点。
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