WO2015015570A1 - 電源システム - Google Patents
電源システム Download PDFInfo
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- WO2015015570A1 WO2015015570A1 PCT/JP2013/070644 JP2013070644W WO2015015570A1 WO 2015015570 A1 WO2015015570 A1 WO 2015015570A1 JP 2013070644 W JP2013070644 W JP 2013070644W WO 2015015570 A1 WO2015015570 A1 WO 2015015570A1
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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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
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/14—Balancing the load in a network
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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
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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
Definitions
- the present invention can supply electric power larger than the total output of the power supply unit to the load by temporarily supplying electric power from the battery unit. That is, the present invention relates to a power supply system having a power assist function.
- FIG. 1 is a diagram showing a configuration of a power supply system disclosed in Patent Document 1.
- the power supply system shown in FIG. 1 includes a three-phase commercial power supply E, a DC power supply device 501 and a load RL.
- the DC power supply device 501 includes a power storage device 60 and a plurality of DC power supply device units 1.
- N one charging / spare unit, an operation state determination unit 82, an output voltage monitoring unit 83, a drooping operation control unit 84, a charging voltage detection unit 85, and a monitoring unit 81 having a constant current charging control unit 86 Is done.
- the DC power supply unit 501 operates n DC power supply units 1 to N to supply power to the load RL having constant power characteristics, and one of the DC power supply units 1 to N has failed.
- the charging / spare unit is used as a replacement unit for the failed unit.
- a three-phase alternating current is used as an input power supply, but a single-phase alternating current may be used as an input power supply.
- the charging / spare unit is used as a spare power supply unit and also serves as a charger for the storage battery 61.
- the DC power supply units 1 to N and the charging / spare unit are constant currents that limit the output current to a predetermined rated current (100% continuous rated current) to prevent damage to the unit during normal operation (normal operation). It has a drooping characteristic, and when a predetermined trigger condition (a condition set according to the operating state of the DC power supply 501) occurs, for example, when a trigger condition such as power recovery after a power failure occurs, a constant current The drooping characteristic can be temporarily switched to the constant power drooping characteristic.
- a predetermined trigger condition a condition set according to the operating state of the DC power supply 501
- the voltage sensor VT2 detects the charging voltage of the storage battery 61.
- the current sensor CT1 detects the charging current of the storage battery 61.
- the monitoring unit 81 communicates with each of the DC power supply units 1 to N and the charging / spare unit to monitor the operating state of each of the DC power supply units 1 to N and the charging / spare unit, and A control command signal (for example, a drooping characteristic switching instruction signal) is transmitted to N and the charge / spare unit.
- a control command signal for example, a drooping characteristic switching instruction signal
- the operation state determination unit 82 inputs the operation state signals St1 to StN from the DC power supply units 1 to N, and inputs the operation state signal Stc from the charge / spare unit. As a result, the operation state determination unit 82 detects (determines) the operation state of the DC power supply unit and the charging / standby unit, the occurrence and recovery of a failure, power recovery after a power failure, and the like.
- the operation state determination unit 82 determines whether, for example, all units are operating normally or during normal operation It is determined whether the power supply is in a start-up state after power recovery, or in a state in which the failed DC power supply unit has recovered and started operation.
- the output voltage monitoring unit 83 receives a voltage detection signal from the voltage sensor VT1 and monitors the output voltage Vo of the DC power supply 501.
- the drooping operation control unit 84 controls the drooping characteristics of the DC power supply units 1 to N and the charging / spare unit according to the operating states of the DC power supply units 1 to N and the charging / spare unit.
- the charging voltage detection unit 85 receives a voltage detection signal from the voltage sensor VT2 and monitors the charging voltage of the storage battery 61.
- the constant current charge control unit 86 performs control so as to perform a constant current output operation to the charge / spare unit when performing constant current charge from the charge / spare unit to the storage battery 61.
- the constant current charging control unit 86 in the monitoring unit 81 performs constant current charging to the storage battery 61 by controlling the output current of the charging / spare unit.
- the constant current charge control unit 86 detects the charging current flowing to the storage battery 61 by the current sensor CT1, and controls the output current of the charging / spare unit so as to have a predetermined constant current value.
- the power supply system disclosed in Patent Document 1 below connects a plurality of DC power supply units in parallel, backs up the output line with a battery in the event of a power failure, and controls the drooping characteristics of the power supply unit to temporarily Is supplied with a current exceeding the rated current.
- JP 2013-046454 A (FIGS. 1 and 2)
- the power consumption changes depending on the amount of information processed by the server.
- the power capacity it is necessary to set a value that exceeds the peak load as the rated power, but as a result, most of the time, it will be operated at an output that is significantly below the rating, and the capacity of the power supply facility is below the average power consumption. There is a problem that the facility cost is increased due to the excess.
- a power supply system that uses a server or the like as a load usually has a battery backup facility in preparation for a power failure.
- the capacity of the power supply facility can be theoretically reduced.
- the battery 61 is connected to the DC bus without passing through the power control means, and the amount of power sharing cannot be controlled. Even though a charge / spare unit is provided, if the battery is responsible for all the load during peak loads, there is a risk that the amount of power used for backup will be insufficient in the event of a power failure. In addition, it is not desirable that the battery discharges at full load from the viewpoint of life.
- the present invention was devised in view of the above points, and is a power supply capable of appropriately controlling the amount of power shared by a battery at peak load without providing a complicated common control device or large-scale mutual communication means.
- the purpose is to provide a system.
- the present invention provides one or more first power supply devices that receive power supplied from an AC or DC power supply and adjust the voltage to a load within a certain range, and supply power from a storage battery.
- the normal mode is to supply power from the first power supply device when the AC or DC power supply is healthy and the load is within the rated range of the power supply system.
- the backup mode is to supply power from the second power supply device when the AC or DC power supply fails.
- the assist mode when the load exceeds the sum of the rated outputs of the first power supply device, the voltage drop of the AC or DC power supply, or the operable number of the plurality of first power supply devices Is reduced, the insufficient power is supplied from the second power supply device,
- the first power supply device and the second power supply device each have independent voltage detection means, output current means for detecting its own output current, and communication means for receiving the designation of the three modes,
- the power supply amount of the second power supply system in the assist mode is adjusted by the output voltage of the power supply system.
- the present invention it becomes possible to share power by the battery at the peak load without providing a complicated common control device or a large-scale mutual communication means, and the power supply facility capacity can be reduced.
- FIG. 1 It is a figure which shows the structure of the conventional power supply system disclosed by patent document 1.
- FIG. 1 It is a figure which shows the structure of the conventional power supply system disclosed by patent document 1.
- FIG. 2 is a block diagram showing a configuration example of the power supply system according to the embodiment of the present invention.
- a power supply system according to the embodiment of the present invention shown in FIG. 2 includes an AC power supply 1, a load 2, and power supply units 3 to 5 that input the AC power supply 1 and supply a substantially constant voltage, for example, 12V to the load 2. And battery units 6 to 8 for supplying power from the built-in battery.
- the power supply units 3 to 5 and the battery units 6 to 8 are connected in parallel to a common DC bus connected to both.
- the parallel number of the power supply units 3 to 5 and the battery units 6 to 8 is set to 3, but it is not limited to this.
- the components of the power supply units 3 to 5 can include AC / DC conversion circuits 10 to 12 and DC / DC conversion circuits 13 to 15. As the DC / DC conversion circuits 13 to 15, input / output insulation type circuits are generally used.
- the battery units 6 to 8 may include batteries 16 to 18 and DC / DC conversion circuits 19 to 21 as constituent elements.
- the DC / DC conversion circuits 19 to 21 may be either an insulating type or a non-insulating type. Further, the DC / DC conversion circuits 19 to 21 here perform one-way power conversion from the battery unit side to the DC bus side, and a battery charging means (not shown) is provided separately. It is also possible to use a charging circuit as one that can convert the power.
- the power supply system according to the embodiment of the present invention shown in FIG. 2 operates in any one of the normal mode, the backup mode, and the assist mode.
- the normal mode is a mode in which power is supplied to the load 2 by the power supply units 3 to 5.
- the backup mode is a mode in which the battery units 6 to 8 supply power to the load 2 when the AC power supply 1 fails.
- the assist mode is a mode in which the battery units 6 to 8 supply the shortage when the power supplied from the power supply units 3 to 5 to the load is insufficient.
- this power system can be used when the load 2 power exceeds the total rated power of the power supply units 3-5, the input voltage drops even if a power failure does not occur, and sufficient power cannot be supplied. It operates in the assist mode when some of the power supply units 3 to 5 are stopped due to maintenance or the like. The assist mode will be described in detail later.
- the battery voltage drops due to discharge.
- the amount of decrease is larger as the discharge current is larger, and has a property of increasing as the discharge progresses.
- the DC / DC conversion circuits 19 to 21 perform an operation of maintaining the DC bus voltage almost constant regardless of the battery voltage change.
- FIG. 3 is a diagram showing the configuration of the power supply unit and the battery unit including the control system according to the embodiment of the present invention.
- FIG. 3 shows an example having one power supply unit and one battery unit as a representative example, but in the same manner as shown in FIG.
- 101, 102, 202 indicate voltage detectors
- 103, 203 indicate current detectors
- 104, 204 indicate voltage command value setting means
- 105, 106, 205, 206 indicate adders, respectively.
- Reference numerals 107 and 207 denote voltage regulators (Auto-Voltage-Regulator), which are composed of PI (Proportional-Integral) regulators (Proportional- & Integral-regulator) and the like.
- Reference numerals 108 and 208 denote current regulators (Auto-Current Regulator), which are composed of PI (proportional / integral) regulators and the like, similar to the voltage regulator.
- the output voltage is detected by the voltage detector 102, and the current command value is output by the voltage regulator 107 by taking the difference between this and the voltage command value from the voltage command value setting means 104.
- the current command value is large when the output voltage is insufficient, and small when the output voltage is excessive.
- the difference between the current command value and the output current detected by the current detector 103 provided in the power supply unit 3 is taken, and the internal electromotive force of the DC / DC converter 13 is increased or decreased so as to approach zero.
- the difference between the current command value output from the voltage regulator 207 and the output current detected by the current detector 203 provided in the battery unit 6 is taken, and the DC / DC is set so that this approaches 0.
- the internal electromotive force of the converter 19 is increased or decreased.
- a limiter (not shown) is provided so that a current exceeding the rated current is not output regardless of the load amount.
- the power supply system As shown in FIG. 2, the power supply system according to the embodiment of the present invention often uses a plurality of power supply units and battery units connected in parallel. At this time, in order to balance the current of each unit, control based on a so-called droop characteristic is performed on each unit.
- FIG. 4 is a diagram for explaining the contents of the droop characteristic according to the embodiment of the present invention.
- the droop characteristic reduces the output voltage according to the output current.
- the output current of a specific unit is large, the voltage of the unit is reduced due to the droop characteristic, so that the current decreases.
- the output current of each unit is balanced around a value that reduces the total load current to a fraction of the number in parallel.
- the output voltage fluctuation range is set to fall within the output voltage accuracy range defined by the device specifications.
- V0C voltage command value at the time of no load
- the battery units 6 to 8 are responsible for all power loads. Accordingly, the droop characteristics of the battery units 6 to 8 in the backup mode are set to be the same as the droop characteristics of the power supply units 3 to 5 in the normal mode (see the upper part of FIG. 4).
- the output voltage value when the power supply units 3 to 5 output 100% current is equal to the output voltage value when the battery units 6 to 8 output 20% current.
- Reduce (Voltage command value) to V02. For example, when the load 2 input current is equivalent to 120% of the rated value, the power supply units 3 to 5 output 100% current, and the battery units 6 to 8 output 20% current. Are balanced and operation is performed at this ratio. Thereby, unnecessary discharge of the battery units 6 to 8 is avoided (see the middle stage of FIG. 4).
- V0C voltage command value
- the current sharing is adjusted by the voltage command value (V0C) at no load, but it is also possible to adjust the droop amount, that is, the output voltage reduction amount with respect to the output current.
- the current sharing may be adjusted by using the no-load voltage command value (V0C) and the droop amount in combination.
- FIG. 109 is a power failure detection means for detecting an input power failure.
- 110 is an assist request generating means for outputting an assist request signal when the current command value in the power supply unit exceeds a specified value, for example, equivalent to 100% output.
- 210 is an assist release request generating means for outputting a signal requesting release of the assist mode when the current command value in the battery unit falls below a specified value, for example, 10%.
- the voltage command value setting means 204 sets V0C (voltage command value) to V03 and outputs a current command value according to a predetermined droop setting (see the lower part of FIG. 4).
- VOC voltage command value
- the voltage command value setting means 204 sets VOC (voltage command value) to V01 regardless of whether or not an assist request is made (see the upper part of FIG. 4).
- the voltage command value setting means 204 sets V0C (voltage command value) to V02 (see the middle part of FIG. 4).
- the current command value of power supply units 3-5 exceeds 100% not only when the input current of load 2 exceeds 100%. If the voltage of the AC power supply 1 drops before a power failure occurs, the AC / DC converters 10 to 12 of the power supply units 3 to 5 cannot input more current than specified, resulting in insufficient power, resulting in an output voltage of descend.
- the assist cancel request generating means 210 is for avoiding this, and for example, when the output current of the battery units 6 to 8 is less than 10%, an assist mode cancel request signal is output to the assist request generating means 110. To do. At this time, if the output current of its own power supply unit is less than 90%, the assist request generating means 110 determines that the total load current is 100% or less and cancels the assist request. If the output current of its own power supply unit is not less than 90%, the assist mode is maintained (not released) because there is a risk of current shortage due to the release of the assist mode due to current detection error or inter-unit imbalance.
- FIG. 5 is a diagram showing operation waveforms of the power supply system according to the embodiment of the present invention.
- the output current of the power supply units 3 to 5 is limited to 100% by the above limiter.
- outputs from the battery units 6 to 8 are added, and a current exceeding 100% is supplied.
- the load current falls below 100%
- the output current of the battery units 6-8 falls below 10%
- the output current of the power supply units 3-5 falls below 90%. Supplied from 3 to 5.
- the simplest method is to use a wired OR or other method to request assistance even if one power supply unit 3-5 is used.
- an assist request is generated, and when all of the battery units 6 to 8 issue an assist cancel request, the assist cancel request is generated.
- This is the safest method for avoiding shortage of output, but for example, even if the error range of current detection and control is clear and the power supply unit with the minimum output current due to parallel imbalance issues a request for assistance.
- the assist request may be generated.
- the assist request may be generated.
- the assist request may be generated.
- the assist release request may be generated. The same applies to the assist release request.
- each unit outputs an assist request or an assist release request using the current command value, but may output an assist request or an assist release request using the output current.
- the present invention can also be applied to power supplies for communication devices and power supplies for large computers.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Power Sources (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
通常モード、バックアップモード、アシストモードの3つの動作モードを持ち、
上記通常モードは、上記交流または直流電源が健全で、かつ負荷が電源システムの定格範囲内であるときに、上記第1の電源装置から電力を供給するものであり、
上記バックアップモードは、上記交流または直流電源が停電した際に上記第2の電源装置から電力を供給するものであり、
上記アシストモードは、上記負荷が上記第1の電源装置の定格出力の総和を上回った場合、あるいは上記交流または直流電源の電圧低下、若しくは複数の上記第1の電源装置の内、稼動可能な数が減少した場合において、不足分の電力を上記第2の電源装置から供給するものであり、
上記第1の電源装置および上記第2の電源装置は、それぞれ独立した電圧検出手段と、自身の出力電流を検出する出力電流手段と、上記3つのモードの指定を受信する通信手段を有し、
上記アシストモードにおける上記第2の電源システムの電力供給量を電源システムの出力電圧により調整する。
Claims (10)
- 交流電源または直流電源からの入力電力を直流電力に変換して負荷に供給する電源システムであって、
前記電源システムは、少なくとも1台の第1の電源装置、少なくとも1台の第2の電源装置、蓄電池を備えるとともに、前記第1の電源装置の出力部と前記第2の電源装置の出力部とを並列接続して構成されており、
前記第1の電源装置は、第1の制御装置の指令に対応して、前記入力電力を前記直流電力に変換し、
前記第2の電源装置は、第2の制御装置の指令に対応して、前記蓄電池から供給される電力を前記直流電力に変換し、
前記第1と第2の制御装置は、協働して、前記第1の電源装置と前記第2の電源装置とを、前記第1の電源装置が負荷に全電力を供給する通常モード、前記第2の電源装置が負荷に全電力を供給するバックアップモード、前記第1の電源装置が一部の電力を供給し、前記第2の電源装置が残りの電力を供給するアシストモードのいずれかで、前記第1と第2の電源装置を動作させる、
ことを特徴とする電源システム。 - 請求項1に記載の電源システムであって、
前記第1の制御装置は、前記第1の電源装置の出力電流の増加に応じて出力電圧を低減するように前記第1の電源装置を動作させ、
前記第2の制御装置は、前記第2の電源装置の出力電流の増加に応じて出力電圧を低減するように前記第2の電源装置を動作させる、
ことを特徴とする電源システム。 - 請求項2に記載の電源システムであって、前記第2の制御装置は、前記通常モード、バックアップモード、アシストモードそれぞれに対して、出力電流に応じて出力電圧を低減するための個別の特性を有していることを特徴とする電源システム。
- 請求項3に記載の電源システムであって、前記第2の制御装置は、前記アシストモードにおける無負荷時の出力電圧が、前記バックアップモードにおける無負荷時の出力電圧よりも低い値になるように、前記第2の電源装置の出力電圧を制御する、
ことを特徴とする電源システム。 - 請求項3に記載の電源システムであって、前記第2の制御装置は、前記アシストモードにおける出力電流に対する出力電圧の低減値を、前記バックアップモードにおける出力電流に対する出力電圧の低減値よりも大きい値に設定して、
前記第2の電源装置の出力電圧を制御することを特徴とする電源システム。 - 請求項2乃至5のいずれか1項に記載の電源システムであって、前記第2の制御装置は、前記出力電圧の低減値を出力電流に比例するように設定していることを特徴とする電源システム。
- 請求項1に記載の電源システムであって、前記第1と第2の制御装置は、前記通常モードから前記アシストモードへの移行を、前記第1の電源装置の出力電流の合計が第1の規定値に達したときに行う、ことを特徴とする電源システム。
- 請求項1に記載の電源システムであって、前記第1と第2の制御装置は、前記アシストモードから前記通常モードへの移行を、前記第2の電源装置の出力電流の合計が第2の規定値以下になったこと、前記第1の電源装置の出力電流の合計が第3の規定値以下となったこと、の少なくともいずれかの条件が成立したときに行う、ことを特徴とする電源システム。
- 請求項1に記載の電源システムにおいて、前記第1と第2の制御装置は、前記通常モードから前記アシストモードへの移行を、所定台数の前記第1の電源装置の出力電流が前記第4の規定値に達したときに行う、ことを特徴とする電源システム。
- 請求項1に記載の電源システムにおいて、前記第1と第2の制御装置は、前記アシストモードから前記通常モードへの移行を、所定台数の前記第2の電源装置の出力電流が前記第5の規定値以下になったこと、所定台数の前記第1の電源装置の出力電流が前記第6の規定値以下になったこと、の少なくともいずれかの条件が成立したときに行う、ことを特徴とする電源システム。
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PCT/JP2013/070644 WO2015015570A1 (ja) | 2013-07-30 | 2013-07-30 | 電源システム |
EP16200235.6A EP3176897B1 (en) | 2013-07-30 | 2013-07-30 | Power source system |
CN201380074343.6A CN105027404B (zh) | 2013-07-30 | 2013-07-30 | 电源系统 |
JP2015529255A JP6123896B2 (ja) | 2013-07-30 | 2013-07-30 | 電源システム |
EP13890645.8A EP2955828A4 (en) | 2013-07-30 | 2013-07-30 | Power-supply system |
US14/846,627 US9882379B2 (en) | 2013-07-30 | 2015-09-04 | Power source system |
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PCT/JP2013/070644 WO2015015570A1 (ja) | 2013-07-30 | 2013-07-30 | 電源システム |
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US14/846,627 Continuation US9882379B2 (en) | 2013-07-30 | 2015-09-04 | Power source system |
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JP (1) | JP6123896B2 (ja) |
CN (1) | CN105027404B (ja) |
WO (1) | WO2015015570A1 (ja) |
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Cited By (17)
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JP2018029408A (ja) * | 2015-04-01 | 2018-02-22 | 富士電機株式会社 | 電源装置 |
JP2016214032A (ja) * | 2015-05-13 | 2016-12-15 | 株式会社Nttドコモ | 整流装置 |
US10374453B2 (en) | 2015-05-25 | 2019-08-06 | Fuji Electric Co., Ltd. | Uninterruptible power supply and control method there of |
JPWO2016189976A1 (ja) * | 2015-05-25 | 2017-10-05 | 富士電機株式会社 | 無停電電源装置および該装置の制御方法 |
WO2016189976A1 (ja) * | 2015-05-25 | 2016-12-01 | 富士電機株式会社 | 無停電電源装置および該装置の制御方法 |
CN107431376A (zh) * | 2015-10-15 | 2017-12-01 | 富士电机株式会社 | 电源系统以及该系统中的功率辅助开始点的再设定方法 |
JP2017135089A (ja) * | 2016-01-29 | 2017-08-03 | コイト電工株式会社 | 電源システム及び鉄道用車両 |
WO2017150141A1 (ja) * | 2016-02-29 | 2017-09-08 | 株式会社 村田製作所 | 電源制御システム、電源制御方法および電源制御プログラム |
WO2017208789A1 (ja) * | 2016-06-02 | 2017-12-07 | 三菱電機株式会社 | 電力変換システム |
JPWO2017208789A1 (ja) * | 2016-06-02 | 2018-12-13 | 三菱電機株式会社 | 電力変換システム |
JP2018137893A (ja) * | 2017-02-22 | 2018-08-30 | 富士電機株式会社 | 電源装置 |
US10811877B2 (en) | 2017-06-08 | 2020-10-20 | Fuji Electric Co., Ltd. | Power supply system and power supply apparatus |
JP2020014340A (ja) * | 2018-07-19 | 2020-01-23 | ニチコン株式会社 | 直流給電システム |
JP7152892B2 (ja) | 2018-07-19 | 2022-10-13 | ニチコン株式会社 | 直流給電システム |
JP2020120465A (ja) * | 2019-01-22 | 2020-08-06 | 株式会社Nttファシリティーズ | 電力変換システム |
JP2020191698A (ja) * | 2019-05-20 | 2020-11-26 | パナソニックIpマネジメント株式会社 | 電力システム |
JP7203325B2 (ja) | 2019-05-20 | 2023-01-13 | パナソニックIpマネジメント株式会社 | 電力システム |
Also Published As
Publication number | Publication date |
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EP2955828A1 (en) | 2015-12-16 |
US9882379B2 (en) | 2018-01-30 |
EP3176897A1 (en) | 2017-06-07 |
US20160006242A1 (en) | 2016-01-07 |
JPWO2015015570A1 (ja) | 2017-03-02 |
EP2955828A4 (en) | 2017-01-11 |
CN105027404A (zh) | 2015-11-04 |
CN105027404B (zh) | 2018-03-30 |
JP6123896B2 (ja) | 2017-05-10 |
EP3176897B1 (en) | 2020-11-18 |
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