WO2014026840A2 - Système de distribution d'électricité pour centres de données - Google Patents
Système de distribution d'électricité pour centres de données Download PDFInfo
- Publication number
- WO2014026840A2 WO2014026840A2 PCT/EP2013/065754 EP2013065754W WO2014026840A2 WO 2014026840 A2 WO2014026840 A2 WO 2014026840A2 EP 2013065754 W EP2013065754 W EP 2013065754W WO 2014026840 A2 WO2014026840 A2 WO 2014026840A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- converter
- voltage
- distribution system
- power distribution
- power
- Prior art date
Links
Classifications
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- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
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- 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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- 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
- H02J9/061—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 DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4807—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode having a high frequency intermediate AC stage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/0074—Plural converter units whose inputs are connected in series
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
Definitions
- the present invention generally relates to electrical power supply for data centers, in particular data centers having a plurality of DC-operated loads such as servers, storage devices and the like.
- data centers have an internal low-voltage three-phase AC electrical power distribution.
- the power supply units provided in each of the servers usually include a switch mode power supply based on power factor correction stage followed by isolated DC-DC stage in order to adapt the voltage for the IT loads.
- Electrical power provided to the data centers or similar facilities is usually taken from a three- phase medium-voltage AC line.
- the medium AC voltage is stepped down using line frequency transformers to the low-voltage AC level, which usually is 380 VAC in Europe.
- UPS uninterruptible power supply units
- isolation devices for galvanic isolation such as power distribution units, are used to isolate the three-phase low-voltage AC distribution supply against a single-phase low AC voltage which is the input of the power supply units as used in the distant servers.
- Document US 2006/0284489 A1 discloses a DC-based data center power architecture which has a four-stage system wherein low-voltage AC power is provided by low-frequency transformers. The low-voltage AC voltage is rectified and power is fed to a set of DC/DC converters that step down the DC voltage to bus bars to which DC loads are connected.
- Document KR 201 1/003035 A discloses a DC power supply system for use in a data center having a plurality of servers.
- the DC power supply system has a rectifier output that supplies DC power when alternating current power is supplied to the rectifier.
- the servers store the DC power output from the rectifier.
- the above object is achieved by the power distribution system for facilities having a plurality of low-voltage DC loads, such as data centers, according to claim 1 .
- a power distribution system for supplying electrical power to a plurality of low-voltage DC loads in a data center, comprising:
- a galvanically isolated converter arrangement for transforming a medium- voltage AC power provided on an utility line to a low/medium DC voltage provided on a first DC bus;
- the converter arrangement has one converter unit per phase, wherein each of the converter units has a plurality of converter cells, and wherein each converter cell has an AC/DC converter stage followed by a DC/DC converter stage, wherein the DC/DC converter stage has a DC/AC converter and an AC/DC converter coupled to a medium- or high-frequency transformer for galvanic isolation.
- One idea of the above power supply is to avoid and completely neutralize bulky low- frequency transformers which are configured to transform medium-voltage AC power to low- voltage AC power in cases where the AC power is mainly used for operating low-voltage DC loads, such as electronic circuits.
- low-frequency transformers cannot provide any kind of power quality regulation alone, uninterruptable power supply is needed for power conditioning which leads to significant power losses across the distribution chain from the AC line to the loads, and the overall efficiency of a system is penalized.
- Having multiple DC loads to be operated with very low voltages of 5 to 24 Volts implies advantages of having a distribution system that is realized with DC in order to match the load requirements and to reduce the number of conversions on the path of energy flow.
- Avoiding the low-frequency transformer can be achieved by using a converter arrangement, such as a galvanically isolated medium-voltage rectifier, to transform the medium-voltage AC power to an intermediate-voltage DC power, wherein the intermediate-voltage DC power is then DC/DC converted to low/medium-voltage DC power as used by the loads and components of the data center.
- a converter arrangement such as a galvanically isolated medium-voltage rectifier
- the intermediate-voltage DC power is then DC/DC converted to low/medium-voltage DC power as used by the loads and components of the data center.
- the above configuration has the advantage that no bulky low-frequency transformers are needed to transform the medium-voltage AC power at the input.
- a converter arrangement instead of the low- frequency transformer a converter arrangement is used, the availability of the overall system can be increased and the up-time can be optimized due to the possibility of adding an additional layer of redundancy to the system, in particular by introducing redundancy inside the converter arrangement structure.
- additional functionalities can be introduced since the converter arrangement incorporates a rectification function, which can be located centrally at the very input of the data center distribution system.
- a further idea is to perform a power distribution throughout the data center with low-voltage DC power instead of low-voltage AC power. This may lead to a reduction of the number of conversion stages that are usually found in AC-supplied data centers by merely avoiding the double conversion performed within the uninterruptible power supply and inside the power supply units in, e. g., the server racks.
- One of the benefits of having fewer conversions is simply a better efficiency as the power losses can be reduced. This may lead to a reduction of the need for cooling power, simpler system layout, smaller installation footprint and lower costs.
- the converter arrangement may have one converter unit per phase, wherein each of the converter units has a plurality of converter cells which may have AC and DC terminals.
- AC input terminals of the converter cells may be connected in series while their DC output terminals are connected in parallel.
- one of the AC input terminals of the converter units may be connected to a common node, wherein the others of the AC input terminals of the converter units are input for a respective phase of the medium-voltage AC power, wherein the DC output terminals of the converter units are connected in parallel.
- the AC input terminals of the converter units may be connected to each other in a delta configuration, wherein the output terminals of the converter units are connected in parallel.
- each converter cell has an AC/DC converter stage followed by a DC/DC converter stage, wherein the DC/DC converter stage has DC/AC converter and an AC/DC converter coupled to a medium- or high-frequency transformer for galvanic isolation.
- a first battery storage may be coupled to a DC link between the AC/DC converter stage and the DC/DC converter stage, in order to provide short term energy supply in case of a loss of AC power supply coming from the grid.
- a second battery storage may be also coupled to the output of the converter arrangement.
- Each converter cell may be provided with a bypass element to be activated in case of a failure to effectively decouple the respective converter cell from the serially connected converter cells. So redundancy can be introduced into the converter arrangement which increases availability of a whole power supply system.
- a generator may be coupled to the first DC bus by means of an AC/DC converter, in order to provide means for long term energy supply in case of a loss of AC power supply coming from the grid beyond the duration able to be supported by the battery storages.
- an energy resource providing DC power e.g. photovoltaic panels
- a second DC bus for carrying a low voltage may be provided which is coupled to the first DC bus by means of non-isolated DC/DC converters.
- the system is provided with a plurality of galvanically isolated converter arrangements and a plurality of DC loads wherein the respective first DC buses for each of the plurality of galvanically isolated converter arrangements are coupled via bypass elements for system reconfiguration.
- Figure 1 shows an architectural layout for a power distribution system for a data center connected to a medium voltage AC utility line
- Figure 2 shows an illustration of a converter arrangement for an exemplary converter arrangement as a galvanically isolated medium-voltage rectifier. Detailed description of embodiments
- Figure 1 shows an architectural layout for a power distribution system 1 for a data center connected to a medium-voltage AC utility line 2.
- the utility line 2 provides a three-phase medium AC voltage which is isolated and stepped down using a converter arrangement 3.
- a medium voltage is a voltage in a range between 1 kVAC to several tens of kVAC.
- the converter arrangement 3 is configured as a galvanically isolated medium-voltage rectifier and provides a transformation using an AC/DC converter stage 31 followed by a DC/DC converter stage 32 including at least one medium frequency transformer for galvanic isolation.
- the converter stages 31 , 32 are operated by means of a control unit 34.
- the control unit 34 is configured to provide the converting function with an AC/DC converter stage 31 .
- the control unit 34 may be configured to operate the AC/DC converter stage 31 to act as a DC/DC converter stage which is capable to convert a medium DC voltage to a lower DC voltage.
- the two-part configuration of the converter arrangement 3 allows for the integration of a first battery storage 33 directly into the converter arrangement 3, thus allowing a great flexibility in system design due to close proximity of elements performing the functions of isolation, rectification and energy storage.
- the first battery storage 33 serves for bridging a power outage such that the converter arrangement 3 can continue delivering regulated power and voltage to the underlying system during a short period of time.
- a first distribution DC bus 5 providing a low/medium voltage level of e. g. 650 V to 750 V is provided.
- An AC generator 6 can be used for backup power as this is common for conventional data centers in which the AC generator 6 is coupled to the first distribution DC bus 5 via an associated active or passive rectifier 7 in order to deliver an appropriate auxiliary DC voltage to the first distribution DC bus 5.
- a plurality of DC/DC converters 8 may be used in order to provide a tightly regulated second bus voltage to second distribution DC buses 9.
- the DC/DC converters 8 are configured as non-isolating converters, i. e. having no transformer, and can be designed in a modular form, so that the total power matches the typical power of groups of DC loads, such as a server rack 10, tapped from the same power distribution unit 1 1 which serves for distributing DC power to the connected server racks 10.
- Each power supply unit 12 is provided that supplies the numerous DC loads 13.
- Each power supply unit 12 may comprises a further DC/DC converter or may be realized as a DC/DC converter which receives a DC input voltage from the second distribution DC bus 9 via the power distribution unit 1 1 and directly feeds the DC loads 13 which are components of the server rack 10.
- a second battery storage 15 can be integrated to provide electrical DC power directly to the first distribution DC bus 5 and/or directly to the second distribution DC bus 9.
- the system can be realized as 2N-redundant, including a bypass element 16, e. g. a switch for system reconfigurations.
- a bypass element 16 may be used to interconnect one or more redundant first distribution DC buses 5, respectively.
- the elements of the converter arrangement 3, the generator 6, the active rectifier 7, the DC/DC converters 8, the first and second distribution DC buses 5, 9, the power distribution unit 1 1 and the further DC/DC converter 12 can be mirrored or multiplied.
- another distributed energy resource 17 such as a renewable energy source, can easily be connected directly to the first or second distribution DC bus 5, 9, through appropriate interface converter 20.
- photovoltaic modules can be provided as such a distributed energy resource.
- Voltage adaption for supplying power to additional loads 18, such as motors or pumps, which are needed for the data center to operate, may be required.
- the voltage adaption is provided by means of an auxiliary DC/DC or DC/AC converter 19.
- AC loads these can be operated by connecting them directly to the first distribution DC bus 5 using inverters to convert the DC power at the first distribution DC bus 5 into AC power to be provided to the respective AC load 18.
- the converter arrangement 3 have to serve the purpose of providing a secure galvanic isolation from the medium voltage utility line 2 as well as the necessary rectification to provide the first DC voltage on the first distribution DC bus 5, with a possibility to integrate the first battery storage 33.
- converter arrangement 3 as may be used in the architectural layout of Figure 1 is shown. As shown, converter arrangement 3 is configured using a arrangement of three single-phase converter units 21 each having a plurality of converter cells 22. Each converter cell 22 has an AC/DC converter stage 23 followed by a DC/DC converter stage 24.
- the converter arrangement 3 can be built in a modular manner, wherein one AC/DC converter stage 23 and one DC/DC converter stage 24 together form the converter cell 22 which might be seen as a basic building block for the converter arrangement 3.
- a number of such converter cells 22 may be stacked and connected in series on their AC side and in parallel on their DC side, respectively.
- the required number of cells 22 mainly depends on the type of semiconductors used, the utility line voltage and the required first DC voltage on the first distribution DC bus 5.
- the isolated DC/DC converter stages 24 provide the required galvanic isolation between the utility side and the load side, so that they can be designed to include a transformer that operates at medium or high frequency.
- the converter arrangement 3 uses a star-connected topology for the single-phase converter units 21 , so that the single-phase converter units 21 are connected such that one of their input terminals is connected at one node and their respective other input terminals are inputs for a respective phase of the AC voltage.
- the output terminals of the single-phase converter units 21 are connected in parallel.
- the converter arrangement 3 can be made fault- tolerant by increasing the number of converter cells 22 per phase. In case of a failure of any component within one cell and provided the means to decouple the faulty cell from the system, the system can continue to operate without derating and a very high up-time can be guaranteed. This introduces another layer of redundancy into the system that is already redundant on the system level, as mentioned above.
- the first battery storage 33 can be integrated into the DC link of each single-phase converter unit 21 of the converter arrangement 3. In one embodiment, this can be done in a conventional fashion on the output side of the converter arrangement 3, so that the whole converter arrangement 3 is stopped once the voltage at the utility line is lost such that the power supply is replaced by the first battery storage 33.
- the first battery storage 33 can be arranged among the floating DC links at the input of each DC/DC converter stage 24 of the converter arrangement 3. In this case, when power on the utility line is lost, the converter arrangement 3 is still partially operational and continues to deliver energy to the first distribution DC bus 5.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Direct Current Feeding And Distribution (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
La présente invention concerne un système de distribution d'électricité (1) pour fournir de l'électricité à une pluralité de charges CC de basse tension dans un centre de données, comprenant : - un agencement de convertisseurs isolés galvaniquement (3) pour transformer un courant alternatif de tension moyenne distribué par un câble de service public (2) en une tension continue faible/moyenne distribuée sur un premier bus CC (5) ; et une pluralité de charges CC à alimenter avec une basse tension CC produite à partir de la tension continue faible/moyenne sur le premier bus CC (5) au moyen d'un ou de plusieurs convertisseurs CC/CC supplémentaires. Ledit système est caractérisé en ce que l'arrangement de convertisseurs (3) présente un module convertisseur (21) par phase, chacun des modules convertisseurs (21) comportant une pluralité de cellules de conversion (22), et chaque cellule de conversion (22) comportant un étage de conversion CA/CC (23, 31) suivi par un étage de conversion CC/CC (24, 32), l'étage de conversion CC/CC (24, 32) comportant un convertisseur CC/CA et un convertisseur CA/CC couplé à un transformateur moyenne ou haute fréquence pour l'isolation galvanique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP12180679.8 | 2012-08-16 | ||
EP12180679 | 2012-08-16 |
Publications (2)
Publication Number | Publication Date |
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WO2014026840A2 true WO2014026840A2 (fr) | 2014-02-20 |
WO2014026840A3 WO2014026840A3 (fr) | 2014-05-30 |
Family
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Application Number | Title | Priority Date | Filing Date |
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PCT/EP2013/065754 WO2014026840A2 (fr) | 2012-08-16 | 2013-07-25 | Système de distribution d'électricité pour centres de données |
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Cited By (23)
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US20170045924A1 (en) * | 2015-08-13 | 2017-02-16 | Abb Technology Ltd. | Electrically powered computer system and power supply system for same |
US9698589B1 (en) | 2014-06-09 | 2017-07-04 | Google Inc. | DC power distribution architectures |
EP3203621A1 (fr) * | 2016-02-03 | 2017-08-09 | Delta Electronics, Inc. | Convertisseur ca/cc modulaire multi-cellule avec connection ca en série et des commutateurs de dérivation |
CN107040153A (zh) * | 2016-02-03 | 2017-08-11 | 台达电子工业股份有限公司 | 电源转换器及其控制方法 |
US9831717B2 (en) | 2015-09-16 | 2017-11-28 | General Electric Company | Systems and methods for operating uninterruptible power supplies |
EP3290257A3 (fr) * | 2016-07-12 | 2018-04-18 | Hamilton Sundstrand Corporation | Système d'alimentation électrique modulaire intégré pour un véhicule |
US9960688B2 (en) | 2016-01-22 | 2018-05-01 | Fuji Electric Co., Ltd. | DC power supply with multi-cell converter |
EP3331122A1 (fr) * | 2016-11-30 | 2018-06-06 | Dr. Ing. h.c. F. Porsche AG | Dispositif de charge |
US10498274B2 (en) | 2016-11-10 | 2019-12-03 | Hamilton Sundstrand Corporation | High voltage direct current system for a vehicle |
CN110544933A (zh) * | 2018-05-28 | 2019-12-06 | 中国移动通信集团设计院有限公司 | 一种分布式直流供电系统的控制方法及装置 |
US10587115B2 (en) | 2016-12-20 | 2020-03-10 | Google Inc. | Modular direct current (DC) architectures |
EP3440755A4 (fr) * | 2016-04-05 | 2020-04-22 | NuScale Power, LLC | Systèmes de distribution de puissance tolérants aux pannes pour une centrale électrique modulaire |
CN111244933A (zh) * | 2020-03-09 | 2020-06-05 | 台达电子企业管理(上海)有限公司 | 储能装置、电力系统及其控制方法 |
WO2020114630A1 (fr) * | 2018-12-04 | 2020-06-11 | Eaton Intelligent Power Limited | Circuit de correction de facteur de puissance, ensemble de correction de facteur de puissance, et alimentation sans coupure en ligne comprenant ledit ensemble |
CN112600186A (zh) * | 2020-12-02 | 2021-04-02 | 广东电网有限责任公司东莞供电局 | 一种直流配电系统及楼宇 |
US11043880B2 (en) | 2016-11-10 | 2021-06-22 | Hamilton Sunstrand Corporation | Electric power generating system with a synchronous generator |
JP2021536219A (ja) * | 2018-09-13 | 2021-12-23 | エルエス、エレクトリック、カンパニー、リミテッドLs Electric Co., Ltd. | 電源供給システム |
JP2021536220A (ja) * | 2018-09-13 | 2021-12-23 | エルエス、エレクトリック、カンパニー、リミテッドLs Electric Co., Ltd. | 電源供給システム |
CN113872181A (zh) * | 2020-06-30 | 2021-12-31 | 中国移动通信集团设计院有限公司 | 数据中心供配电系统 |
CN113991635A (zh) * | 2021-10-28 | 2022-01-28 | 广东电网有限责任公司 | 双回路低压直流配电系统 |
WO2023087044A1 (fr) * | 2021-11-19 | 2023-05-25 | Avl List Gmbh | Système de test multicanal avec couplage galvanique de circuits intermédiaires et procédé de couplage galvanique de circuits intermédiaires |
US11799293B2 (en) | 2020-03-09 | 2023-10-24 | Delta Electronics (Shanghai) Co., Ltd. | High-voltage DC transformation apparatus and power system and control method thereof |
WO2024052083A1 (fr) | 2022-09-05 | 2024-03-14 | Siemens Energy AS | Système de distribution d'énergie pour centre de données |
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