JPH077872A - Uninterruptive power supply equipment - Google Patents
Uninterruptive power supply equipmentInfo
- Publication number
- JPH077872A JPH077872A JP5144780A JP14478093A JPH077872A JP H077872 A JPH077872 A JP H077872A JP 5144780 A JP5144780 A JP 5144780A JP 14478093 A JP14478093 A JP 14478093A JP H077872 A JPH077872 A JP H077872A
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- power
- commercial
- power supply
- operation mode
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は商用交流電力を側路す
る回路を有し、常時は商用交流電力を整流し、その整流
出力をインバータで交流電力に変換して負荷へ供給し、
停電時には蓄電池よりの直流電力をインバータで交流電
力に変換して負荷へ供給する常時運転インバータ給電形
の無停電電源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a circuit for bypassing commercial AC power, always rectifies commercial AC power, converts the rectified output to AC power with an inverter, and supplies the AC power to a load.
The present invention relates to a continuous operation inverter-powered uninterruptible power supply device which converts DC power from a storage battery into AC power by an inverter and supplies it to a load during a power failure.
【０００２】[0002]
【従来の技術】無停電電源装置としては、商用交流電力
を受電中は商用交流電力を整流して一旦直流電力に変換
し、その直流をインバータで再び交流電力に変換して負
荷へ供給する、常時インバータ給電方式と、商用交流電
力受電中は商用交流電力を側路を、通じて負荷へ直接供
給し、停電時のみ蓄電池よりの直流電力をインバータで
交流電力に変換して負荷へ供給する待機インバータ運転
方式とがある。2. Description of the Related Art An uninterruptible power supply system rectifies commercial AC power while receiving commercial AC power and once converts it into DC power, converts the DC power into AC power again by an inverter, and supplies it to a load. Inverter power supply system and standby mode where commercial AC power is directly supplied to the load through the bypass while receiving commercial AC power, and the DC power from the storage battery is converted to AC power by the inverter and supplied to the load only during a power failure There is an inverter operation method.
【０００３】常時インバータ給電方式は停電時には、蓄
電池をインバータへ接続する操作だけであり、高速度に
蓄電池の直流電力を交流電力に変換して負荷へ供給する
ことができるため、高速停電検出機能を必要としない。
また、工場など大きな馬力のモータなど大電力負荷が存
在し、その大電力負荷のオンオフにより商用交流電圧が
不安定になるような地域において、その商用交流電力を
電子計算機などの電源電力として供給する場合に、常時
インバータ給電方式の無停電電源装置を用いて商用電源
電力を供給すると、停電があっても動作させることがで
きるのみならず、インバータを動作させて給電するた
め、インバータの出力電圧が一定になるような制御も行
われ、従って商用交流電圧の変動が大きくても、これが
抑圧され、安定した電圧の交流電力が供給され、例えば
商用交流電圧が±１５％程度変動しても±３％程度の変
動にすることができ、電子計算機などを安定に動作させ
ることができる。In the constant inverter power supply system, at the time of a power failure, only the operation of connecting the storage battery to the inverter is required, and since the DC power of the storage battery can be converted into AC power at a high speed and supplied to the load, a high speed power failure detection function is provided. do not need.
In a region such as a factory where a large electric power load such as a large horsepower motor is present and the commercial AC voltage becomes unstable due to the ON / OFF of the large electric power load, the commercial AC power is supplied as the power supply for a computer or the like. In this case, if commercial power supply is supplied using an uninterruptible power supply system of constant inverter power supply, not only can it operate even if there is a power outage, but the inverter's output voltage is Even if the commercial AC voltage fluctuates significantly, this control is suppressed and AC power of a stable voltage is supplied. For example, even if the commercial AC voltage fluctuates by ± 15%, ± 3 It is possible to make a fluctuation of about%, and it is possible to stably operate an electronic computer or the like.
【０００４】[0004]
【発明が解決しようとする課題】常時インバータ給電方
式は、上述したように停電時にも交流電力を供給でき、
しかも、商用交流電圧の変動にかかわらず、常に安定な
電圧で交流電圧を供給できるが、商用交流電力を整流し
た後インバータで交流電力に変換しているため、整流器
と、インバータとでそれぞれ電力損失が生じている。整
流器、インバータの何れも、非常に高い効率でもそれぞ
れ９０％程であり、その場合の全体の効率は、８１％
（＝９０×９０）であり、常時２０％程度の電力損失が
生じているという問題がある。As described above, the constant inverter power supply system can supply AC power even during a power failure,
Moreover, the AC voltage can always be supplied with a stable voltage regardless of fluctuations in the commercial AC voltage, but since the commercial AC power is rectified and then converted into AC power by the inverter, the rectifier and the inverter each lose power loss. Is occurring. Both the rectifier and the inverter have a very high efficiency of about 90%, and the overall efficiency in that case is 81%.
(= 90 × 90), and there is a problem that a power loss of about 20% always occurs.
【０００５】従って、オフィス街など、商用交流電圧の
変動が比較的少い環境においては、まれに発生する停電
に対応するために、常時インバータ給電方式の無停電電
源装置を用いずに、商用交流電力受電中の電力損失の少
ない待機インバータ運転方式の無停電電源装置を用いる
ことが考えられる。しかし一般の利用者が利用する商用
交流電圧をいちいち測定して、常時インバータ給電方式
のものとするか、待機インバータ運転方式のものにする
かの機種を決定することは実際には困難であり、待機イ
ンバータ運転方式で良い商用交流電力環境においても常
時インバータ給電方式のものが用いられる傾向にある。Therefore, in an environment where the fluctuation of the commercial AC voltage is relatively small, such as in an office area, in order to cope with a power failure that rarely occurs, the commercial AC power supply is not used, and the commercial AC is not used. It is conceivable to use an uninterruptible power supply system of the standby inverter operation type with little power loss during power reception. However, it is actually difficult to measure the commercial AC voltage used by general users one by one and decide whether to use the constant inverter power supply method or the standby inverter operation method. Even in the commercial AC power environment where the standby inverter operation method is good, there is a tendency that the constant inverter power supply method is used.
【０００６】[0006]
【課題を解決するための手段】この発明によれば、常時
運転インバータ給電形の無停電電源装置において、待機
インバータ運転モードにすることができるようにされ、
また商用交流電圧が検出され、その検出商用交流電圧が
設定電圧範囲内にあるか否かの判定がなされ、設定電圧
範囲内にあると判定された状態が所定時間継続すると、
これが検出され、請求項１の発明ではその検出出力で、
常時運転インバータ給電モードからインバータ待機運転
モードに切替えられ、請求項２の発明では所定時間継続
したことが検出されると、常時運転インバータ給電モー
ドからインバータ待機運転モードに切替えることを視覚
的又は聴覚的に促する。According to the present invention, it is possible to set a standby inverter operation mode in an uninterruptible power supply system of a constant operation inverter feed type,
Further, the commercial AC voltage is detected, it is determined whether the detected commercial AC voltage is within the set voltage range, and if the state determined to be within the set voltage range continues for a predetermined time,
This is detected, and in the invention of claim 1, the detection output is:
When the continuous operation inverter power supply mode is switched to the inverter standby operation mode, and when it is detected that the operation has continued for a predetermined time in the invention of claim 2, it is visually or audibly notified that the continuous operation inverter power supply mode is switched to the inverter standby operation mode. Prompt to.
【０００７】[0007]
【実施例】図１にこの発明の実施例を示す。入力端子１
１は商用電源１２に接続されるものであり、この入力端
子１１は整流器１３の入力側、充電器１４の入力側、側
路１５の一端、制御部１６に接続され、整流器１３の出
力側はインバータ１７の入力側に接続され、インバータ
１７の出力側はスイッチ１８を通じて出力端子１９に接
続され、側路１５の他端はスイッチ２１を通じて出力端
子１９に接続される。出力端子１９は負荷２２が接続さ
れるものである。充電器１４の出力は蓄電池２３に接続
されると共にスイッチ２４を通じてインバータ１７の入
力側に接続される。FIG. 1 shows an embodiment of the present invention. Input terminal 1
Reference numeral 1 is connected to a commercial power supply 12. This input terminal 11 is connected to the input side of the rectifier 13, the input side of the charger 14, one end of the bypass 15, the control unit 16, and the output side of the rectifier 13 is It is connected to the input side of the inverter 17, the output side of the inverter 17 is connected to the output terminal 19 through the switch 18, and the other end of the bypass 15 is connected to the output terminal 19 through the switch 21. A load 22 is connected to the output terminal 19. The output of the charger 14 is connected to the storage battery 23 and the input side of the inverter 17 through the switch 24.
【０００８】制御部１６においては入力端子１１より商
用交流電圧をトランス２５にて取込まれ、そのトランス
２５の出力はＡＤ変換器２６でデジタル信号に変換され
てＣＰＵ２７に取込まれる。ＣＰＵ２７はインバータ駆
動回路２８を動作させ、インバータ駆動回路２８により
インバータ１７を動作させ、また整流器駆動回路２９を
動作させ、整流器駆動回路２９によりアクティブ整流器
１３を動作させ、更にスイッチ駆動回路３１を通じてス
イッチ１８，２１，２４を各別に制御することができ
る。In the control unit 16, the commercial AC voltage is taken in from the input terminal 11 by the transformer 25, and the output of the transformer 25 is converted into a digital signal by the AD converter 26 and taken in by the CPU 27. The CPU 27 operates the inverter drive circuit 28, operates the inverter 17 by the inverter drive circuit 28, operates the rectifier drive circuit 29, operates the active rectifier 13 by the rectifier drive circuit 29, and further operates the switch 18 through the switch drive circuit 31. , 21, 24 can be controlled separately.
【０００９】つまり、商用交流電力受電中はスイッチ１
８をオンとし、スイッチ２１，２４をオフとし、整流器
１３、インバータ１７を動作状態とし、図２Ａの実線に
示すように商用交流電力を整流器１３で整流し、その整
流出力をインバータ１７で交流電力に変換して負荷２２
へ供給し、また充電器１４を通じて蓄電池２３を充電す
る。この状態で停電になると、これが制御部１６で検出
され、制御部１６はスイッチ１８，２４をオンとし、ス
イッチ２１をオフとし、インバータ１７を動作させ、図
２Ｂに実線で示すように蓄電池２３の直流電力をインバ
ータ１７で交流に変換して負荷２２へ供給する。つまり
常時インバータ運転給電モードとして動作させることが
できる。That is, the switch 1 is in operation while receiving commercial AC power.
8 is turned on, the switches 21 and 24 are turned off, the rectifier 13 and the inverter 17 are operated, the commercial AC power is rectified by the rectifier 13 as shown by the solid line in FIG. 2A, and the rectified output is AC power by the inverter 17. Converted to load 22
And the storage battery 23 is charged through the charger 14. When a power failure occurs in this state, this is detected by the control unit 16, and the control unit 16 turns on the switches 18 and 24, turns off the switch 21, operates the inverter 17, and causes the storage battery 23 to operate as shown by the solid line in FIG. 2B. The DC power is converted into AC by the inverter 17 and supplied to the load 22. That is, it is possible to always operate in the inverter operation power supply mode.
【００１０】この発明では待機インバータ運転モードと
することができるようにされる。つまり商用交流電力を
受電中はスイッチ２１をオンとし、スイッチ１８，２４
をオフとし、図２Ｃに示すように商用交流電力を側路１
５を通じて負荷２２へ供給すると共に充電器１４を通じ
て蓄電池２３を充電する。この状態で停電になると、ス
イッチ１８，２４をオンとし、スイッチ２１をオフと
し、インバータ１７を動作状態とし、図２Ｂに実線で示
すように、蓄電池２３の直流電力をインバータ１７で交
流電力に変換して負荷２２へ供給する。このようなモー
ドで動作させることができるように、制御部１６内にプ
ログラムを設ける。In the present invention, the standby inverter operation mode can be set. That is, the switch 21 is turned on while receiving the commercial AC power, and the switches 18, 24 are turned on.
Is turned off, and commercial AC power is supplied to the bypass 1 as shown in FIG. 2C.
The battery 22 is supplied to the load 22 through 5 and the storage battery 23 is charged through the charger 14. When a power failure occurs in this state, the switches 18 and 24 are turned on, the switch 21 is turned off, the inverter 17 is put into an operating state, and the DC power of the storage battery 23 is converted into AC power by the inverter 17 as shown by a solid line in FIG. 2B. And supplies it to the load 22. A program is provided in the control unit 16 so that the program can be operated in such a mode.
【００１１】請求項１の発明では、この無停電電源装置
の使用時に入力された商用交流電圧の状態を監視し、そ
の電圧変動が少ないと判定されると、常時インバータ運
転給電モードから待機インバータ運転モードに自動的に
切替えられる。即ち図３に示すように、無停電電源装置
の使用を開始すると、先ず常時インバータ運転給電モー
ドで動作され（Ｓ1 ）、入力端子１１からの商用交流電
圧をＣＰＵ２７に取込みその電圧Ｖi を検出する
（Ｓ2 ）。その検出電圧Ｖi が設定電圧ＶL からＶH ま
での範囲（例えば規定電圧の±８％の範囲）内にあるか
否かの判定がなされる（Ｓ3 ）。Ｖi が設定電圧範囲内
にあると判定されるとタイマ３４が起動され（Ｓ4 ）、
次にタイマ３４がタイムオーバしたかの判定がなされる
（Ｓ5 ）。タイムオーバしていないとステップＳ1 に戻
る。ステップＳ3 で検出電圧Ｖi が設定電圧範囲内にな
いと判定されるとタイマ３４がリセットされてステップ
Ｓ5 に移り（Ｓ6 ）、タイムオーバしていないからステ
ップＳ1 に戻る。ステップＳ5 でタイムオーバすると待
機インバータ運転モードに切替えられる（Ｓ7 ）。つま
り商用交流電圧Ｖi が設定範囲内にある状態がタイマ３
４の設定時間、例えば２４時間程度継続すると、この商
用交流電力を使用している環境は商用交流電圧が比較的
安定な所であると判断されて待機インバータ運転モード
に自動的に切替えられる。According to the first aspect of the present invention, the state of the commercial AC voltage input when the uninterruptible power supply is used is monitored, and when it is determined that the voltage fluctuation is small, the inverter operation is continuously switched from the power supply mode to the standby inverter operation. The mode is automatically switched. That is, as shown in FIG. 3, when the use of the uninterruptible power supply is started, first, it is always operated in the inverter operation power feeding mode (S 1 ), the commercial AC voltage from the input terminal 11 is taken into the CPU 27, and the voltage V i is detected. Yes (S 2 ). It is determined whether the detected voltage V i is within the range from the set voltage V L to V H (for example, within ± 8% of the specified voltage) (S 3 ). When it is determined that V i is within the set voltage range, the timer 34 is started (S 4 ),
Then the timer 34 a determination is made whether the time is over (S 5). If the time has not expired, the process returns to step S 1 . When the detection voltage V i at step S 3 is determined not within the predetermined voltage range timer 34 is reset in the routine goes to Step S 5 (S 6), the flow returns from not time-over to step S 1. When the time is over in step S 5 , the standby inverter operation mode is switched to (S 7 ). That is, when the commercial AC voltage V i is within the set range, the timer 3
If the set time of 4, for example, about 24 hours is continued, it is determined that the environment in which the commercial AC power is used is a place where the commercial AC voltage is relatively stable, and the standby inverter operation mode is automatically switched.
【００１２】請求項２の発明によれば請求項１の発明と
ほぼ同様であるが、図１に示すように制御部１６に待機
インバータ運転モードにすることを促す報知手段として
表示灯３５が設けられ、また待機インバータ運転モード
設定スイッチ３６が設けられる。図４に、図３と対応す
る部分に同一符号を付けて示すように、無停電電源装置
の使用が開始されると、常時インバータ運転モードで動
作し、商用交流電圧Ｖ i が設定電圧範囲内である状態が
所定時間継続すると、つまりステップＳ5 でタイムオー
バすると、待機モード適表示灯３５が点灯され、待機イ
ンバータ運転モードに切替えることが促されてステップ
Ｓ1 に戻る（Ｓ8 ）。使用者はこの表示灯３５の点灯を
見て待機インバータ運転モードの方が適切であることを
知り、スイッチ３６をオンとすると、制御部１６は常時
インバータ運転モードから待機インバータ運転モードに
切替える。ステップＳ6 でタイマ３４がリセットされる
と待機モード適表示灯３５を消灯してステップＳ5 に移
る（Ｓ9 ）。According to the invention of claim 2, the invention of claim 1
Almost the same, but as shown in FIG.
As a notification means that prompts you to enter the inverter operation mode
An indicator lamp 35 is provided, and a standby inverter operation mode is also provided.
A setting switch 36 is provided. 4 corresponds to FIG.
Uninterruptible power supply
When the use of the
Made, commercial AC voltage V iIs within the set voltage range
If it continues for a predetermined time, that is, step SFiveAt time
Then, the standby mode appropriate indicator lamp 35 is turned on and the standby
Prompt to switch to the inverter operation mode
S1Return to (S8). The user turns on this indicator light 35.
Look that the standby inverter operation mode is more appropriate
Knowing that, when the switch 36 is turned on, the control unit 16 is always
From inverter operation mode to standby inverter operation mode
Switch. Step S6To reset the timer 34
And the standby mode appropriate indicator lamp 35 is turned off and step S is performed.FiveMoved to
(S9).
【００１３】待機モード適表示灯３５の代りにブザーの
鳴動などにより聴覚的に待機インバータ運転モードに切
替えた方がよいことを使用者に報知してもよい。Instead of the standby mode appropriate indicator lamp 35, the user may be informed that it is better to auditorily switch to the standby inverter operation mode by, for example, sounding a buzzer.
【００１４】[0014]
【発明の効果】以上述べたように請求項１の発明によれ
ば、使用者の手をわずらわせることなく、商用交流電圧
が比較的安定している場合は自動的に待機インバータ運
転モードに切替り、無停電電源装置での電力消費を低減
することができる。請求項２の発明によれば、商用交流
電圧が比較的安定していれば待機インバータ運転モード
に切替えた方がよいことが自動的に報知される。As described above, according to the first aspect of the present invention, the standby inverter operation mode is automatically set when the commercial AC voltage is relatively stable without the need for the user to move. The power consumption in the uninterruptible power supply can be reduced by switching to. According to the invention of claim 2, if the commercial AC voltage is relatively stable, it is automatically informed that it is better to switch to the standby inverter operation mode.
【００１５】しかも商用交流電圧の検出、監視は、装置
に内蔵されている停電検出回路の検出部を流用でき、新
たに付加する部分はごくわずかで済む。Moreover, the commercial AC voltage can be detected and monitored by utilizing the detection section of the power failure detection circuit built into the apparatus, and the number of newly added sections is very small.
【図１】この発明の実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】Ａは常時インバータ運転モードにおける商用交
流電力受電中の給電状態を示す図、Ｂは停電中の給電状
態を示す図、Ｃは待機インバータ運転モードにおける商
用交流電力受電中の給電状態を示す図である。FIG. 2A is a diagram showing a power supply state during commercial AC power reception in a constant inverter operation mode, B is a diagram showing power supply state during a power failure, and C is a power supply state during commercial AC power reception in a standby inverter operation mode. FIG.
【図３】請求項１の発明の要部の動作を示す流れ図。FIG. 3 is a flowchart showing the operation of the main part of the invention of claim 1.
【図４】請求項２の発明の要部の動作を示す流れ図。FIG. 4 is a flow chart showing an operation of a main part of the invention of claim 2;
Claims (2)
時運転インバータ給電形の無停電電源装置において、 商用交流電力を受電中は上記側路を通じて商用交流電力
を負荷へ供給し、停電になると蓄電池の直流電力をイン
バータで交流電力に変換して負荷へ供給するインバータ
待機運転モードにする手段と、 商用交流電圧を検出する手段と、 その検出した商用交流電圧が設定電圧範囲内にあるか否
かを判定する手段と、 上記設定電圧範囲内にあると判定された状態が所定時間
継続すると、これを検出する手段と、 その検出出力により常時運転インバータ給電モードから
上記インバータ待機運転モードに切替える手段と、 を設けたことを特徴とする無停電電源装置。1. An uninterruptible power supply device of a constant operation inverter feed type having a circuit for bypassing commercial AC power, wherein commercial AC power is supplied to a load through the bypass while receiving commercial AC power and a power failure occurs. A means for converting the DC power of the storage battery into AC power by the inverter and supplying it to the load in the inverter standby operation mode, a means for detecting the commercial AC voltage, and whether the detected commercial AC voltage is within the set voltage range. Means for determining whether or not the state determined to be within the set voltage range continues for a predetermined time, and means for detecting this, and means for switching from the constant operation inverter power supply mode to the inverter standby operation mode by the detection output. And an uninterruptible power supply.
時運転インバータ給電形の無停電電源装置において、 商用交流電力を受電中は上記側路を通じて商用交流電力
を負荷へ供給し、停電になると蓄電池の直流電力をイン
バータで交流電力に変換して負荷へ供給するインバータ
待機運転モードにする手段と、 商用交流電圧を検出する手段と、 その検出した商用交流電圧が設定電圧範囲内にあるか否
かを判定する手段と、 上記設定電圧範囲内にあると判定された状態が所定時間
継続すると、これを検出する手段と、 その検出出力により、常時運転インバータ給電モードか
ら上記インバータ待機運転モードに切替えることを促す
る手段と、 を設けたことを特徴とする無停電電源装置。2. In a constant operation inverter-fed uninterruptible power supply device having a circuit for bypassing commercial AC power, while commercial AC power is being received, commercial AC power is supplied to a load through the bypass and a power failure occurs. A means for converting the DC power of the storage battery into AC power by the inverter and supplying it to the load in the inverter standby operation mode, a means for detecting the commercial AC voltage, and whether the detected commercial AC voltage is within the set voltage range. Means for determining whether or not the state determined to be within the set voltage range continues for a predetermined time, and means for detecting this, and the detection output thereof switches the continuous operation inverter power supply mode to the inverter standby operation mode. An uninterruptible power supply characterized in that it is provided with a means for urging that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14478093A JP3716863B2 (en) | 1993-06-16 | 1993-06-16 | Uninterruptible power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14478093A JP3716863B2 (en) | 1993-06-16 | 1993-06-16 | Uninterruptible power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH077872A true JPH077872A (en) | 1995-01-10 |
| JP3716863B2 JP3716863B2 (en) | 2005-11-16 |
Family
ID=15370269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14478093A Expired - Fee Related JP3716863B2 (en) | 1993-06-16 | 1993-06-16 | Uninterruptible power system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3716863B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015976A2 (en) * | 1995-10-26 | 1997-05-01 | Siemens Aktiengesellschaft | Direct voltage back-up system at a power supply outlet |
| KR20010001587A (en) * | 1999-06-07 | 2001-01-05 | 유완식 | Supply apparatus of an emergency power |
| WO2013111802A1 (en) * | 2012-01-27 | 2013-08-01 | エリーパワー株式会社 | Power supply device, power supply device control method, and program |
| CN103701200A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Power supply selection module of electric appliance with automatic changeover switch |
-
1993
- 1993-06-16 JP JP14478093A patent/JP3716863B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015976A2 (en) * | 1995-10-26 | 1997-05-01 | Siemens Aktiengesellschaft | Direct voltage back-up system at a power supply outlet |
| WO1997015976A3 (en) * | 1995-10-26 | 1997-07-10 | Siemens Ag | Direct voltage back-up system at a power supply outlet |
| KR20010001587A (en) * | 1999-06-07 | 2001-01-05 | 유완식 | Supply apparatus of an emergency power |
| WO2013111802A1 (en) * | 2012-01-27 | 2013-08-01 | エリーパワー株式会社 | Power supply device, power supply device control method, and program |
| CN103701200A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Power supply selection module of electric appliance with automatic changeover switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3716863B2 (en) | 2005-11-16 |
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