EP4302383A1 - System und verfahren zur verwendung einer usv zur dynamischen steuerung der aus einer versorgungsstromquelle empfangenen wechselstrommenge - Google Patents
System und verfahren zur verwendung einer usv zur dynamischen steuerung der aus einer versorgungsstromquelle empfangenen wechselstrommengeInfo
- Publication number
- EP4302383A1 EP4302383A1 EP22711803.1A EP22711803A EP4302383A1 EP 4302383 A1 EP4302383 A1 EP 4302383A1 EP 22711803 A EP22711803 A EP 22711803A EP 4302383 A1 EP4302383 A1 EP 4302383A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ups
- power
- battery
- maximum
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012358 sourcing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
Definitions
- the present disclosure relates to uninterruptible power sources, and more particularly to systems and methods for controlling power received by a UPS from at least one power source, and for dynamically prioritizing the use of available power from a utility power source or a secondary power source both to maintain adequate power to a load, as well as to charge a battery of the UPS, in a highly efficient manner.
- UPSs Uninterruptible power supplies
- Traditional UPSs have not included any means to adjust the power being received from one or more available utility power sources, short of simply uncoupling the UPS from the utility power source or powering down the UPS.
- the present disclosure relates to an uninterruptible power supply (UPS) for monitoring and prioritizing the use of available power.
- the UPS may comprise an electronic controller having a memory and a software control module, a battery, a rectifier for rectifying available AC power from a primary AC power source to produce DC power, an inverter and a DC/DC converter.
- the inverter is in communication with the rectifier for generating AC power from the DC power provided by the rectifier.
- the DC/DC converter is in communication with the rectifier for producing a DC charging current for use in charging the battery.
- the electronic controller and the software control module are configured to dynamically prioritize the use of available power from at least one of the primary AC power source or the battery. In this manner the UPS is able to maintain adequate power to a load being supported by the UPS, as well as to charge the battery of the UPS when predetermined operating conditions are met.
- the present disclosure relates to a method of using an uninterruptible power supply (UPS) for monitoring and prioritizing the use of available power.
- the method may comprise providing a UPS having a memory, a software control module, a battery, and setpoints for maximum input current to be drawn by the UPS, maximum power input to be drawn by the UPS, and maximum battery charging current to be drawn by the UPS for charging the battery.
- the method further includes using the electronic controller and the software control module to monitor power being provided by the primary AC power source.
- the method further includes determining if the power being provided by the primary AC power source is sufficient to both charge the battery and meet the load requirement without exceeding the maximum input current and the maximum power input.
- the method further includes reducing a charging current being supplied by the UPS to the battery by a predetermined amount to reduce the charging current from a first level to a second level less than the first level.
- the method further includes making a determination if the load requirement can be met by the UPS while the charging current is maintained at the second level. When the load requirement can be met while the charging current is maintained at the second level, then the UPS continues supporting the load requirement while simultaneously continuing charging of the battery at the second level of the charging current.
- FIG. 1 is a high level block diagram of one UPS in accordance with one embodiment of the present disclosure, where the UPS may be driven by a primary AC power source and a secondary AC power source; and
- Figures 2a and 2b are flowcharts setting forth one example of a methodology of the present disclosure showing operations that may be performed by the software control module of Figure 1 in prioritizing the use of available current from a primary power source.
- UPS uninterruptible power supply
- the UPS 10 is shown being configured to absorb power from either a primary AC power source 12 or a secondary AC power source 14.
- the primary AC power source 12 is an AC power grid
- the secondary AC power source 14 may be, in one example, a generator or other energy source capable of being configured to provide an AC power output.
- the UPS 10 includes the typical components of a power interface circuit 16, a rectifier 18, an inverter 20, a DC-to-DC converter 22 and a battery bank 24.
- a main switch 26 allows power from the primary AC power source 12 to be interrupted to the rectifier 18, while a bypass switch 28 allows power to be interrupted to the power interface circuit 16.
- a manual bypass switch 30 positioned in series in a bypass line 31 allows power from the secondary AC power source 14 to be interrupted when the UPS 10 is running in bypass mode being powered from the secondary AC power source 14.
- An output switch 32 allows the output of the inverter 20 to be uncoupled from a Load.
- the power interface circuit 16 includes the usual components of a bypass inductor 34 in series with an SCR switch 36 made up of back-to-back coupled SCRs 36a and 36b.
- the Load may be a critical load, meaning that it is a load that needs a safe shut down when a power failure occurs, or a non-critical load that does not require any specific shut down procedure.
- the term “Load” will be used in the following discussion with the understanding that this term may encompass either critical or non-critical loads.
- the UPS 10 also includes an electronic controller 38 having a memory 38a.
- the memory 38a may be a non-volatile memory such as RAM, ROM, etc. which stores a software control module 38b.
- the controller 38 receives a plurality of inputs that may be set from a user interface subsystem 40.
- the inputs may include, without limitation, a maximum (“Max”) input current, a maximum (“Max”) battery charging current and a maximum (“Max”) power input.
- the Max input current is the maximum steady state current that the rectifier 18 can absorb from the primary AC power source 12.
- the Max battery charging current is the maximum charging current that can be absorbed by the battery bank 24 for recharging purposes.
- a control setpoint for the Max power input is the maximum power that the primary power source 12 can supply.
- An alternative to the Max power input control setpoint is the maximum load power, which is the amount of power that can be supplied on a continuous basis by the primary power source 12 to the Load.
- the user interface subsystem 40 may include a touchscreen interface or any one or more of a keypad, a monitor, a mouse, or any other user input device, for enabling a user to set the above-described inputs/levels. It will be appreciated that the present disclosure is not limited to any specific means or mechanism for enabling the input of variables that the UPS 10 uses in its operation.
- the UPS 10 may operate in either VFI (Voltage Frequency Independent) or VI (Voltage Independent) modes, and in either instance feeds the Load to maintain the Load fully powered with AC power.
- the software control module 38b provides software to address several different conditions that may arise during operation of the UPS 10 in either the VFI or VI operating modes. For example, if a low input voltage to the rectifier 18 is present, or if a low output power value is present, action may be needed to reduce the current drawn for battery bank 24 recharging purposes so that the UPS 10 will still be able to provide sufficient power to power the Load.
- the UPS 10 In addition to certain operating conditions arising that require the UPS 10 to modify how it uses the available current from the primary AC power source, the UPS 10 also needs to be able to adjust to meet additional requirements that may be imposed based on customer specifications (e.g., upstream transformers, local generators, etc.) that may also require modification of the energy consumption by the UPS 10 to ensure that the Load remains fully powered.
- customer specifications e.g., upstream transformers, local generators, etc.
- These limitations collectively require suitable algorithms capable of looking at a number of variables and determining how best to use (or absorb) the current available power from the primary AC power source 12.
- the software control module 38b meets these needs, as will be described with regard to Figures 2a and 2b.
- FIG. 1 a flowchart 100 is shown which represents one example of the algorithms/operations which may be carried out by the software control module 38b in monitoring and prioritizing the use of available power from at least two different power sources. It will be appreciated that minor modifications may be made to the operations described in Figures 2a and 2b, or to the order of operations, without departing from the scope of the present disclosure.
- the user may initially enter the variables (i.e., setpoints) for Max input current, Max battery charging current and Max power input. These values may be entered by the user via the user interface 40. Optionally, they may be programmed into the memory 38a associated with the controller 38 at the time of manufacture of the UPS 10.
- a check is then made if energy (i.e., power) needed from the primary AC power source 12 is sufficient to both charge the battery bank 24 and supply the Load without exceeding the Max input current value, the Max power input or the Load power setpoints. If this check produces a “NO” answer, then at operation 106 the charging current may be reduced by the controller 38 to meet the load requirement.
- the controller 38 makes another check to determine if the load requirement is now met. If this check produces a “YES” answer, then operation in the VFI or VI modes may continue, as indicated at operation 110, and operations 104-108 may then be repeated.
- the UPS 10 feeds the Load with the Max input current setpoint being met. However, due to low input voltage or to the value of the input or Load power, the charging current will be reduced, or even set to zero, as more fully explained below, to prioritize the Load. In the event that the charging current is set to zero, if the input current setpoint is reached and no additional power can be sourced from the primary power source 12 to supply the Load, then part of the Load is fed from the battery bank 24. It will also be appreciated that when operating in VFI mode, the UPS 10 will be working to reduce the power absorption from the rectifier 18. And when operating in VI mode, the UPS 10 operates to reduce the power absorption from the bypass line.
- the controller 38 makes a check to determine if the UPS’s 10 battery bank 24 is fully charged. If this check produces a “YES” answer, then at operation 122 the controller 38 reduces the current being drawn from the primary AC power source 12 to that amount which is needed to meet the Load and normal battery charging needs, and operation 110 in Figure 2a is repeated.
- the UPS controller 38 allows sourcing current from the primary AC power source 12 to be increased while maintaining the UPS 10 within its Safe Operating Area (SoA), to expedite full charging of the battery bank 24.
- Safe Operating Area it is meant the maximum input characteristics (e.g., current and power) that allow the internal components of the UPS 10 to operate within their specifications (e.g., their thermal limits). Operations 120 and 124 may be repeated until the check at operation 120 indicates that the UPS 10 battery bank 24 is fully charged, at which point operations 122 and 110 are repeated.
- the battery bank 24 may have a setpoint that defines a fully charged state, and this setpoint may be input via the user interface 40 and monitored by the controller 38.
- a separate (i.e., external) controller may be used to monitor the battery fully charged setpoint, in which case the separate controller may need to communicate with the controller 38 to ensure full control over charging of the battery bank 24.
- the UPS 10 may be configured through the software control module 38b to enable charging and/or discharging of the battery bank 24 in accordance with a programmable power ramp.
- the battery bank 24 power reference or in other words its available power at any given time, may be determined using an external controller, in which case the external controller may need to communicate with the controller 38 to provide full functionality for the UPS 10.
- the controller 38 using the software control module 38b, thus is able to examine the input current being sourced from the primary AC power source 12, and to prioritize use of the available input current to first meet the needs of the Load. This action may involve dynamically adjusting the amount of current being used for charging purposes and, if needed, completely interrupting the flow of charging current to the battery bank 24 to maintain a level of available power for powering the Load. Alternatively, if the Max input current is not being drawn by the UPS 10 to power the Load, the UPS can enter an “enhanced” charging mode where additional current beyond that which would normally be provided to the battery bank 24 will be sourced to the battery bank to more quickly fully charge the battery bank.
- the above charging and dynamic control features implemented by the UPS 10, which allow modification of the battery charging operations in real time, as well as enabling real time decisions to be made by the controller 38 as to how best to use power from two or more available power sources to prioritize maintaining power to the Load, may also be retrofitted in some instances into a pre-existing UPS. This would be assuming that the pre-existing UPS has a suitable controller, memory and power/current monitoring subsystems, and a means for inputting the needed Max input current and Max power input and Max battery charging current values.
- Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
- first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
- Spatially relative terms such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the example term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202163156559P | 2021-03-04 | 2021-03-04 | |
US17/685,326 US20220285976A1 (en) | 2021-03-04 | 2022-03-02 | System and method for using a ups to dynamically control the amount of ac power received from a utility power source |
PCT/US2022/018828 WO2022187570A1 (en) | 2021-03-04 | 2022-03-04 | System and method for using a ups to dynamically control the amount of ac power received from a utility power source |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4302383A1 true EP4302383A1 (de) | 2024-01-10 |
Family
ID=80820281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22711803.1A Pending EP4302383A1 (de) | 2021-03-04 | 2022-03-04 | System und verfahren zur verwendung einer usv zur dynamischen steuerung der aus einer versorgungsstromquelle empfangenen wechselstrommenge |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4302383A1 (de) |
WO (1) | WO2022187570A1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7737580B2 (en) * | 2004-08-31 | 2010-06-15 | American Power Conversion Corporation | Method and apparatus for providing uninterruptible power |
US7872450B1 (en) * | 2004-12-29 | 2011-01-18 | American Power Conversion Corporation | Adaptive battery charging |
US8193662B1 (en) * | 2011-10-17 | 2012-06-05 | Google Inc. | Power supply source blending and smoothing |
KR101322617B1 (ko) * | 2013-07-30 | 2013-10-29 | 이화전기공업 주식회사 | 배터리를 구비한 무정전전원장치의 에너지저장시스템 및 그 운전방법 |
-
2022
- 2022-03-04 EP EP22711803.1A patent/EP4302383A1/de active Pending
- 2022-03-04 WO PCT/US2022/018828 patent/WO2022187570A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2022187570A1 (en) | 2022-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10003200B2 (en) | Decentralized module-based DC data center | |
EP3484015B1 (de) | Stromversorgungssystem und - verfahren | |
Kim et al. | Operation and control strategy of a new hybrid ESS-UPS system | |
CN112585837A (zh) | 用于电池组的增强的电池管理系统 | |
US10468909B2 (en) | Data center power systems with dynamic source designation | |
CN205335963U (zh) | 用于向负载供应备用电力的电池备用单元和系统 | |
US20130002027A1 (en) | Uninterruptible power supply | |
US11575262B2 (en) | Priority load sharing for electrical power systems having multiple power sources | |
CN115066819B (zh) | 与一个或多个不同的公用事业代理一起使用的电力供应管理系统和方法 | |
CN104247240A (zh) | 带用作双变换系统中的输入电力调节器的增量变换器的ups | |
US20220326754A1 (en) | Control method and control apparatus for power supply apparatus in data center | |
TW201429112A (zh) | 資料中心之供電系統 | |
US20220285976A1 (en) | System and method for using a ups to dynamically control the amount of ac power received from a utility power source | |
US20210249896A1 (en) | Power supply management system and method for use with one or multiple different utility proxies | |
CN112567586A (zh) | 用于电池组的增强的切换型平衡网络 | |
JPH07274394A (ja) | デマンド監視による機器の制御システム | |
WO2022187570A1 (en) | System and method for using a ups to dynamically control the amount of ac power received from a utility power source | |
CN116888853A (zh) | 使用ups动态控制从公用电源接收的ac电力量的系统和方法 | |
JPH1169660A (ja) | 無停電供給装置 | |
WO2018078683A1 (ja) | 電力供給システム | |
CN103368253B (zh) | 智能型后备电源负荷控制方法和系统 | |
CN110620426A (zh) | 一种电源切换装置和方法 | |
KR102564903B1 (ko) | 연료 전지를 위한 에너지 관리 시스템 | |
CN116762254A (zh) | 与一个或多个不同的公用事业代理一起使用的电力供应管理系统和方法 | |
WO2022173824A1 (en) | Power supply management system and method for use with one or multiple different utility proxies |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20230728 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) |