JP2001245444A - Uninterruptible power supply device - Google Patents
Uninterruptible power supply deviceInfo
- Publication number
- JP2001245444A JP2001245444A JP2000054545A JP2000054545A JP2001245444A JP 2001245444 A JP2001245444 A JP 2001245444A JP 2000054545 A JP2000054545 A JP 2000054545A JP 2000054545 A JP2000054545 A JP 2000054545A JP 2001245444 A JP2001245444 A JP 2001245444A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- supply circuit
- load
- emergency bypass
- 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.)
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Links
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- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、交流電源の停電
にかかわらず負荷（機器）への交流電力供給を継続する
無停電電源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply that continuously supplies AC power to a load (equipment) regardless of a power outage of an AC power supply.
【０００２】[0002]
【従来の技術】従来の無停電電源装置の構成を図４に示
す。１は無停電電源装置で、入力端子２，３および出力
端子４を有する。入力端子２，３は商用交流電源３０に
接続され、出力端子４には交流負荷４０が接続される。
なお、入力端子２，３を共通の商用交流電源３０に接続
しているが、電圧が互いに異なる２つの商用交流電源に
別々に接続する場合もある。2. Description of the Related Art The configuration of a conventional uninterruptible power supply is shown in FIG. Reference numeral 1 denotes an uninterruptible power supply having input terminals 2 and 3 and an output terminal 4. The input terminals 2 and 3 are connected to a commercial AC power supply 30, and the output terminal 4 is connected to an AC load 40.
Although the input terminals 2 and 3 are connected to the common commercial AC power supply 30, the input terminals 2 and 3 may be separately connected to two commercial AC power supplies having different voltages.
【０００３】無停電電源装置１において、入力端子２と
出力端子４との間に第１給電回路５が接続されている。
第１給電回路５は、入力端子３への入力電圧を直流電圧
に変換する整流部６、この整流部６の出力端に接続され
た蓄電池７、この蓄電池７の電圧または整流部６の出力
電圧を交流電圧に変換するインバータ部８を有し、さら
にこのインバータ部８と出力端子４への接続間に通電制
御用の交流スイッチ部９を有し、商用交流電源３０の非
停電時はもちろん、商用交流電源３０が停電した場合
も、交流負荷４０への給電を常に行う。In the uninterruptible power supply 1, a first power supply circuit 5 is connected between an input terminal 2 and an output terminal 4.
The first power supply circuit 5 includes a rectifier 6 that converts an input voltage to the input terminal 3 into a DC voltage, a storage battery 7 connected to an output terminal of the rectifier 6, a voltage of the storage battery 7, or an output voltage of the rectifier 6. To an AC voltage, and an AC switch unit 9 for controlling the conduction between the inverter unit 8 and the connection to the output terminal 4. Even when the commercial AC power supply 30 fails, power is always supplied to the AC load 40.
【０００４】この給電回路５において、入力端子２と整
流部６との接続間にサーキットブレーカ等の手動開閉器
２１、整流部６およびインバータ部８と蓄電池７との接
続間に手動開閉器２２、交流スイッチ部９と出力端子４
との接続間に手動開閉器２３がそれぞれ設けられてい
る。In the power supply circuit 5, a manual switch 21 such as a circuit breaker is connected between the input terminal 2 and the rectifier 6, and a manual switch 22 is connected between the rectifier 6 and the inverter 8 and the storage battery 7. AC switch section 9 and output terminal 4
A manual switch 23 is provided between each connection.
【０００５】また、入力端子３と出力端子４との間に第
２給電回路１０が接続されている。第２給電回路１０
は、通電制御用の交流スイッチ部１１を有し、第１給電
回路５に異常が生じた場合に商用交流電源３０から交流
負荷４０への直接的な給電を行う。[0005] A second power supply circuit 10 is connected between the input terminal 3 and the output terminal 4. Second power supply circuit 10
Has an AC switch unit 11 for controlling power supply, and performs direct power supply from the commercial AC power supply 30 to the AC load 40 when an abnormality occurs in the first power supply circuit 5.
【０００６】この給電回路１０において、入力端子３と
交流スイッチ部１１との接続間に手動開閉器２４、交流
スイッチ部１１と出力端子４との間に手動開閉器２５が
それぞれ設けられている。In the power supply circuit 10, a manual switch 24 is provided between the input terminal 3 and the AC switch unit 11, and a manual switch 25 is provided between the AC switch unit 11 and the output terminal 4.
【０００７】さらに、入力端子３と出力端子４との間に
（つまり給電回路５，１０と並列に）非常用バイパス回
路１２が接続され、この非常用バイパス回路１２に手動
開閉器２６が設けられている。非常用バイパス回路１２
は、商用交流電源３０から交流負荷４０への直接的な給
電を行うためのもので、給電回路５，１０の保守点検時
に手動開閉器２６が閉じられることにより投入される。Further, an emergency bypass circuit 12 is connected between the input terminal 3 and the output terminal 4 (that is, in parallel with the power supply circuits 5 and 10), and a manual switch 26 is provided in the emergency bypass circuit 12. ing. Emergency bypass circuit 12
Is used to supply power directly from the commercial AC power supply 30 to the AC load 40, and is turned on when the manual switch 26 is closed during maintenance and inspection of the power supply circuits 5 and 10.
【０００８】通常は（保守点検時以外）、図示のように
手動開閉器２１，２２，２３，２４，２５が閉じられて
手動開閉器２６が開かれ、交流スイッチ部９がオンされ
る。これにより、給電回路５から交流負荷４０への給電
が行われる。商用交流電源３０が停電しても、蓄電池７
が放電することで、給電回路５による給電が継続する。Normally (other than during maintenance and inspection), the manual switches 21, 22, 23, 24, 25 are closed, the manual switch 26 is opened, and the AC switch 9 is turned on, as shown in the figure. Thus, power is supplied from the power supply circuit 5 to the AC load 40. Even if the commercial AC power supply 30 fails, the storage battery 7
Is discharged, power supply by the power supply circuit 5 is continued.
【０００９】給電回路５に異常（整流部６、蓄電池７、
インバータ８などの異常）が生じた場合は、交流スイッ
チ部１１がオンされて給電回路１０による給電（交流電
源電圧の供給）が行われる。この給電により、給電回路
５の異常にかかわらず、交流負荷４０の運転を継続する
ことができる。Abnormalities in the power supply circuit 5 (rectifier 6, storage battery 7,
When an abnormality occurs in the inverter 8 or the like), the AC switch unit 11 is turned on, and power is supplied (supply of the AC power supply voltage) by the power supply circuit 10. With this power supply, the operation of the AC load 40 can be continued regardless of the abnormality of the power supply circuit 5.
【００１０】給電回路５，１０の保守点検を行う場合、
保守員の手作業により、交流スイッチ部１１をオン、交
流スイッチ部９がオフすることによって交流負荷４０へ
の給電が給電回路５から給電回路１０への切換が行わ
れ、次に手動開閉器２６が閉じられて非常用バイパス回
路１２による給電（交流電源電圧の供給）が行われる。
続いて、給電回路５，１０における手動開閉器２１，２
２，２３，２４，２５が開かれ、給電回路５，１０が遮
断される。When performing maintenance and inspection of the power supply circuits 5 and 10,
The power supply to the AC load 40 is switched from the power supply circuit 5 to the power supply circuit 10 by turning on the AC switch unit 11 and turning off the AC switch unit 9 by the manual operation of the maintenance person. Is closed, and power is supplied by the emergency bypass circuit 12 (supply of the AC power supply voltage).
Subsequently, the manual switches 21 and 22 in the power supply circuits 5 and 10 are provided.
2, 23, 24 and 25 are opened, and the power supply circuits 5 and 10 are shut off.
【００１１】保守点検が終了すると、保守員により、手
動開閉器２４，２５が規定の順序で閉じられて給電回路
１０が投入され、手動開閉器２６が開かれて非常用バイ
パス回路１２が遮断され、給電回路１０での給電へ切換
わる。次に保守員により、手動開閉器２１，２２，２３
が規定の順序で閉じられて給電回路１０が投入され、最
後に保守員により交流スイッチ部９がオン、交流スイッ
チ部１１をオフして給電回路５により交流負荷４０へ給
電する。When the maintenance and inspection are completed, the manual switches 24 and 25 are closed in a prescribed order, the power supply circuit 10 is turned on, and the manual switch 26 is opened and the emergency bypass circuit 12 is shut off by the maintenance staff. , The power supply circuit 10 switches to power supply. Next, manual switches 21, 22, 23 are operated by maintenance personnel.
Are closed in a prescribed order, and the power supply circuit 10 is turned on. Finally, the AC switch unit 9 is turned on by the maintenance staff, the AC switch unit 11 is turned off, and power is supplied to the AC load 40 by the power supply circuit 5.
【００１２】[0012]
【発明が解決しようとする課題】給電状態の切換に際
し、保守員は、手動開閉器２１，２２，２３，２４，２
５，２６を規定の順序で操作する必要がある。操作の順
序に間違いがあると、給電が途絶えて交流負荷４０の運
転が停止するという最悪の事態を招いてしまう。仮に、
操作マニュアルがあっても、手作業の間違いを完全に無
くすことは困難である。When the power supply state is switched, the maintenance staff must manually switch the switches 21, 22, 23, 24, and 2, respectively.
5, 26 need to be operated in a prescribed order. If the order of the operations is incorrect, the worst situation that the power supply is cut off and the operation of the AC load 40 stops will be caused. what if,
Even with an operation manual, it is difficult to completely eliminate manual errors.
【００１３】また、交流負荷４０への給電が絶えるのを
確実に防ぐためには、各手動開閉器の操作中に、整流部
６、インバータ部８、交流スイッチ部９，１１などが正
常に機能しているかどうかを装置状態表示部などで逐次
に確認する作業も必要となる。この確認作業は、保守員
にとって大きな負担である。Further, in order to surely prevent the power supply to the AC load 40 from being cut off, the rectifying unit 6, the inverter unit 8, the AC switch units 9 and 11 function normally during the operation of each manual switch. It is also necessary to sequentially check whether the operation is performed on the device status display unit or the like. This check is a heavy burden on maintenance personnel.
【００１４】この発明は上記の事情を考慮したもので、
その目的とするところは、負荷への給電を絶やすことな
く、給電状態を自動的にしかも確実に切り換えることが
でき、これにより安全性および信頼性の向上が図れると
ともに保守員にかかる負担を大幅に軽減し得る無停電電
源装置を提供することにある。The present invention has been made in view of the above circumstances.
Its purpose is to automatically and reliably switch the power supply state without interrupting power supply to the load, thereby improving safety and reliability and greatly reducing the burden on maintenance personnel. An object of the present invention is to provide an uninterruptible power supply that can be reduced.
【００１５】[0015]
【課題を解決するための手段】請求項１に係る発明の無
停電電源装置は、交流電源の停電にかかわらず負荷への
給電を行う給電回路と、この給電回路に並列に接続され
た非常用バイパス回路と、上記給電回路および上記非常
用バイパス回路にそれぞれ設けられた開閉接点と、上記
給電回路および上記非常用バイパス回路の状態を監視す
る監視手段と、この監視手段の監視結果に基づいて上記
負荷への給電が絶えないよう上記各開閉接点を制御し、
上記給電回路による給電と上記非常用バイパス回路によ
る給電とを切換える制御手段と、を備えている。According to a first aspect of the present invention, there is provided an uninterruptible power supply which supplies power to a load regardless of a power failure of an AC power supply, and an emergency power supply connected in parallel to the power supply circuit. A bypass circuit, switching contacts provided in the power supply circuit and the emergency bypass circuit, monitoring means for monitoring states of the power supply circuit and the emergency bypass circuit, and Control each of the above switching contacts to keep the power supply to the load constant,
Control means for switching between power supply by the power supply circuit and power supply by the emergency bypass circuit.
【００１６】請求項２に係る発明の無停電電源装置は、
交流電源の停電にかかわらず負荷への給電を行う第１給
電回路と、この第１給電回路が異常の場合に上記交流電
源から上記負荷への直接的な給電を行う第２給電回路
と、これら給電回路に並列に接続された非常用バイパス
回路と、上記第１給電回路、上記第２給電回路、および
上記非常用バイパス回路にそれぞれ設けられた開閉接点
と、上記第１給電回路、上記第２給電回路、および上記
非常用バイパス回路の状態を監視する監視手段と、この
監視手段の監視結果に基づいて上記負荷への給電が絶え
ないよう上記各開閉接点を制御し、上記各給電回路によ
る給電と上記非常用バイパス回路による給電とを切換え
る制御手段と、を備えている。The uninterruptible power supply of the invention according to claim 2 is
A first power supply circuit for supplying power to the load regardless of a power failure of the AC power supply, a second power supply circuit for supplying power directly from the AC power supply to the load when the first power supply circuit is abnormal, An emergency bypass circuit connected in parallel to the power supply circuit; switching contacts provided in the first power supply circuit, the second power supply circuit, and the emergency bypass circuit; and the first power supply circuit and the second power supply circuit. A power supply circuit and monitoring means for monitoring the state of the emergency bypass circuit; and, based on a monitoring result of the monitoring means, controlling each of the open / close contacts so that power supply to the load is not interrupted. And control means for switching between power supply by the emergency bypass circuit.
【００１７】請求項３に係る発明の無停電電源装置は、
交流電源に接続される入力端子と、負荷に接続される出
力端子と、上記入力端子と上記出力端子との間に接続さ
れ、かつ入力端子への入力電圧を直流電圧に変換する整
流部、この整流部の出力端に接続された蓄電池、この蓄
電池の電圧または上記整流部の出力電圧を交流電圧に変
換するインバータ部を有するとともに、このインバータ
部と出力端子との接続間に通電制御用の第１交流スイッ
チ部を有し、上記交流電源の停電にかかわらず上記負荷
への給電を行う第１給電回路と、上記入力端子と上記出
力端子との間に接続され、かつ通電制御用の第２交流ス
イッチ部を有し、上記第１給電回路が異常の場合に上記
交流電源から上記負荷への直接的な給電を行う第２給電
回路と、上記入力端子と上記出力端子との間に接続され
た非常用バイパス回路と、上記第１給電回路、上記第２
給電回路、および上記非常用バイパス回路にそれぞれ設
けられた開閉接点と、上記第１給電回路、上記第２給電
回路、および上記非常用バイパス回路の状態を監視する
監視手段と、この監視手段の監視結果に基づいて上記負
荷への給電が絶えないよう上記各開閉接点および上記各
交流スイッチ部を制御し、上記各給電回路による給電と
上記非常用バイパス回路による給電とを切換える制御手
段と、を備えている。According to a third aspect of the present invention, there is provided an uninterruptible power supply,
An input terminal connected to the AC power supply, an output terminal connected to the load, a rectifier connected between the input terminal and the output terminal, and for converting an input voltage to the input terminal into a DC voltage; A storage battery connected to an output terminal of the rectifier, an inverter for converting the voltage of the storage battery or the output voltage of the rectifier to an AC voltage, and a power supply control connection between the inverter and the output terminal. A first power supply circuit having an AC switch unit for supplying power to the load irrespective of a power failure of the AC power supply, and a second power supply circuit connected between the input terminal and the output terminal for controlling power supply; A second power supply circuit having an AC switch unit for directly supplying power from the AC power supply to the load when the first power supply circuit is abnormal; and a second power supply circuit connected between the input terminal and the output terminal. Emergency bypass And road, the first power supply circuit, the second
A power supply circuit, switching contacts provided in the emergency bypass circuit, monitoring means for monitoring states of the first power supply circuit, the second power supply circuit, and the emergency bypass circuit, and monitoring of the monitoring means Control means for controlling each of the open / close contacts and each of the AC switch sections so that power supply to the load is not interrupted based on the result, and switching between power supply by the power supply circuits and power supply by the emergency bypass circuit. ing.
【００１８】請求項４に係る発明の無停電電源装置は、
交流電源に接続される入力端子と、負荷に接続される出
力端子と、上記入力端子と上記出力端子との間に接続さ
れ、入力端子への入力電圧を直流電圧に変換する整流
部、この整流部の出力端に接続された蓄電池、この蓄電
池の電圧または上記整流部の出力電圧を交流電圧に変換
するインバータ部を有し、このインバータ部と出力端子
への接続間に通電制御用の第１交流スイッチ部を有し、
上記交流電源の停電にかかわらず上記負荷への給電を行
う第１給電回路と、上記入力端子と上記出力端子との間
に接続され、かつ通電制御用の第２交流スイッチ部を有
し、上記第１給電回路が異常の場合に上記交流電源から
上記負荷への直接的な給電を行う第２給電回路と、上記
入力端子と上記出力端子との間に接続された非常用バイ
パス回路と、上記入力端子と上記整流部との接続間、上
記整流部および上記インバータ部と上記蓄電池との接続
間、上記第１交流スイッチ部と上記出力端子との接続
間、上記入力端子と上記第２交流スイッチ部との接続
間、および上記第２交流スイッチ部と上記出力端子との
接続間、および上記非常用バイパス回路にそれぞれ設け
られた開閉接点と、上記第１給電回路、上記第２給電回
路、および上記非常用バイパス回路の状態を監視する監
視手段と、この監視手段の監視結果に基づいて上記負荷
への給電が絶えないよう上記各開閉接点、上記各交流ス
イッチ部、上記整流部、および上記インバータ部を制御
し、上記各給電回路による給電と上記非常用バイパス回
路による給電とを切換える制御手段と、を備えている。The uninterruptible power supply of the invention according to claim 4 is:
An input terminal connected to an AC power supply, an output terminal connected to a load, and a rectifier connected between the input terminal and the output terminal for converting an input voltage to the input terminal into a DC voltage; A storage battery connected to the output end of the unit, an inverter unit for converting the voltage of the storage battery or the output voltage of the rectifying unit into an AC voltage, and a first power supply control first connection between the inverter unit and the output terminal. It has an AC switch part,
A first power supply circuit for supplying power to the load regardless of a power failure of the AC power supply, and a second AC switch unit connected between the input terminal and the output terminal for power supply control, A second power supply circuit for directly supplying power from the AC power supply to the load when the first power supply circuit is abnormal; an emergency bypass circuit connected between the input terminal and the output terminal; Between the input terminal and the rectifier, between the rectifier and the inverter and the battery, between the first AC switch and the output terminal, between the input terminal and the second AC switch. Switching contacts provided in the emergency bypass circuit, the first power supply circuit, the second power supply circuit, Above emergency Monitoring means for monitoring the state of the bypass circuit; and controlling the switching contacts, the AC switch sections, the rectifying section, and the inverter section based on the monitoring result of the monitoring section so that power supply to the load is not interrupted. And control means for switching between power supply by the power supply circuits and power supply by the emergency bypass circuit.
【００１９】請求項５に係る発明の無停電電源装置は、
請求項１ないし請求項４のいずれかに係る発明におい
て、さらに、保守点検用の操作手段を設けている。この
操作手段の操作に応じて制御手段の制御が実行される。The uninterruptible power supply of the invention according to claim 5 is:
In the invention according to any one of claims 1 to 4, an operation means for maintenance and inspection is further provided. The control of the control means is executed in accordance with the operation of the operation means.
【００２０】請求項６に係る発明の無停電電源装置は、
請求項１ないし請求項４のいずれかに係る発明におい
て、監視手段の監視結果が適正でない場合に、制御手段
の制御が中断され、その旨が報知される。The uninterruptible power supply of the invention according to claim 6 is:
In the invention according to any one of claims 1 to 4, when the monitoring result of the monitoring means is not appropriate, the control of the control means is interrupted, and the fact is notified.
【００２１】[0021]
【発明の実施の形態】以下、この発明の一実施例につい
て図面を参照して説明する。なお、図面において図４と
同一部分には同一符号を付し、その詳細な説明は省略す
る。図１に示すように、手動開閉器２１，２２，２３，
２４，２５，２６に代えて、開閉接点５１，５２，５
３，５４，５５，５６が設けられている。これら開閉接
点は、たとえば電磁接触器の接点である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the drawings, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 1, the manual switches 21, 22, 23,
Switching contacts 51, 52, 5 instead of 24, 25, 26
3, 54, 55 and 56 are provided. These switching contacts are, for example, contacts of an electromagnetic contactor.
【００２２】第１給電回路６において、開閉接点５１と
整流部６との間、開閉接点５２とインバータ部８との
間、およびインバータ部８と交流スイッチ部９との間
に、電圧検知器６１，６２，６３がそれぞれ接続されて
いる。出力端子４に電圧検知器６４が接続されている。In the first power supply circuit 6, a voltage detector 61 is provided between the switching contact 51 and the rectifier 6, between the switching contact 52 and the inverter 8, and between the inverter 8 and the AC switch 9. , 62, 63 are connected respectively. A voltage detector 64 is connected to the output terminal 4.
【００２３】第２給電回路１０において、開閉接点５４
と交流スイッチ部１１との間、および交流スイッチ部１
１と開閉接点５５との間に、電圧検知器６５，６６がそ
れぞれ接続されている。In the second power supply circuit 10, the switching contact 54
Between the AC switch unit 11 and the AC switch unit 1
Voltage detectors 65 and 66 are connected between the switch 1 and the switching contact 55, respectively.
【００２４】交流スイッチ部９，１１は、高速での導通
が可能な（長時間にわたる通電は苦手な）半導体素子た
とえばサイリスタと、長時間にわたる通電が可能な（高
速での導通は苦手な）機械的接点たとえば電磁接触器の
接点とを、互いに並列に接続したもので、瞬断無い給電
と継続的な給電の両方を満足し得る構成となっている。
この交流スイッチ部９，１１が正常に動作しているか否
かを検出するために、状態検出部６８，６９がそれぞれ
設けられている。The AC switch units 9 and 11 include a semiconductor element such as a thyristor capable of conducting at high speed (for which conduction for a long time is not good) and a machine capable of conducting for a long time (for which conduction at high speed is not good). The electrical contacts, for example, the contacts of an electromagnetic contactor, are connected in parallel with each other, so that both instantaneous power supply and continuous power supply can be satisfied.
State detection sections 68 and 69 are provided to detect whether the AC switch sections 9 and 11 are operating normally.
【００２５】７０は制御部で、当該無停電電源装置１の
全体を制御する。この制御部７０に、整流部６、インバ
ータ部８、交流スイッチ部９，１１、開閉接点５１，５
２，…５６、電圧検知器６１，６２，…６６、状態検出
部６８，６９、操作部７１、および表示部７２が接続さ
れている。操作部７１には、保守点検用の操作手段とし
て保守点検スイッチ７１ａが設けられている。A control unit 70 controls the entire uninterruptible power supply 1. The control unit 70 includes a rectifying unit 6, an inverter unit 8, AC switch units 9 and 11, switching contacts 51 and 5,
, 56, voltage detectors 61, 62,... 66, state detectors 68, 69, operation unit 71, and display unit 72 are connected. The operation unit 71 is provided with a maintenance and inspection switch 71a as an operation means for maintenance and inspection.
【００２６】制御部７０は、主要な機能として次の
［１］〜［４］を有する。The control section 70 has the following main functions [1] to [4].
【００２７】［１］通常時（保守点検時以外）、図１の
ように、開閉接点５１，５２，５３，５４，５５を閉
じ、開閉接点５６を開く手段。[1] Means for closing the switching contacts 51, 52, 53, 54 and 55 and opening the switching contact 56 during normal times (other than during maintenance and inspection) as shown in FIG.
【００２８】［２］電圧検知器６１，６２，…６６の検
知結果および状態検出部６８，６９の検出結果に応じて
給電回路５，１０および非常用バイパス回路１２の状態
を監視する監視手段。 ［３］この監視手段の監視結果に基づき、給電回路５が
正常な場合は交流スイッチ部９をオンして給電回路５に
よる給電状態を設定し、給電回路５に異常が生じると直
ちに交流スイッチ部１１をオンして給電回路１０による
給電状態を設定する手段。[2] Monitoring means for monitoring the states of the power supply circuits 5, 10 and the emergency bypass circuit 12 according to the detection results of the voltage detectors 61, 62,... 66 and the detection results of the state detectors 68, 69. [3] Based on the result of monitoring by the monitoring means, if the power supply circuit 5 is normal, the AC switch 9 is turned on to set the power supply state by the power supply circuit 5, and if an abnormality occurs in the power supply circuit 5, the AC switch unit is immediately turned on. Means for turning on 11 and setting the power supply state by the power supply circuit 10;
【００２９】［４］保守点検スイッチ７１ａが操作され
たとき、上記監視手段の監視結果に基づいて交流負荷４
０への給電が絶えないよう開閉接点５１，５２，…５
６、交流スイッチ部９，１１、整流部６、およびインバ
ータ部８を制御し、給電回路５，１０による給電と非常
用バイパス回路１２による給電とを切り換える制御手
段。[4] When the maintenance inspection switch 71a is operated, the AC load 4 is determined based on the monitoring result of the monitoring means.
Switching contacts 51, 52,... 5 so that power supply to 0 is not interrupted
6. Control means for controlling the AC switch sections 9 and 11, the rectifying section 6 and the inverter section 8 to switch between feeding by the feeding circuits 5 and 10 and feeding by the emergency bypass circuit 12.
【００３０】つぎに、上記の構成の作用を図２および図
３のフローチャートを参照しながら説明する。Next, the operation of the above configuration will be described with reference to the flowcharts of FIGS.
【００３１】通常は（保守点検時以外）、図１のように
開閉接点５１，５２，５３，５４，５５が閉じられて開
閉接点５６が開かれ、交流スイッチ部９がオンされる。
これにより、給電回路５から交流負荷４０への給電が行
われる。商用交流電源３０が停電しても、蓄電池７が放
電することで、給電回路５による給電が継続する。Normally (other than at the time of maintenance and inspection), as shown in FIG. 1, the switching contacts 51, 52, 53, 54 and 55 are closed, the switching contact 56 is opened, and the AC switch unit 9 is turned on.
Thus, power is supplied from the power supply circuit 5 to the AC load 40. Even if the commercial AC power supply 30 loses power, the storage battery 7 discharges, so that power supply by the power supply circuit 5 is continued.
【００３２】給電回路５に異常（整流部６、蓄電池７、
インバータ８などの異常）が生じた場合は、交流スイッ
チ部１１がオンされ、続いて交流スイッチ部９がオフさ
れて給電回路１０による給電（交流電源電圧の供給）が
行われる。この給電により、給電回路５の異常にかかわ
らず、交流負荷４０の運転を継続することができる。Abnormality in power supply circuit 5 (rectifier 6, storage battery 7,
When an abnormality occurs in the inverter 8 or the like), the AC switch unit 11 is turned on, then the AC switch unit 9 is turned off, and power is supplied by the power supply circuit 10 (supply of the AC power supply voltage). With this power supply, the operation of the AC load 40 can be continued regardless of the abnormality of the power supply circuit 5.
【００３３】給電回路５，１０の保守点検を行う場合、
保守員により、保守点検スイッチ７１ａがオン操作され
る（ステップ１０１のＹＥＳ）。このオン操作時、給電
状態が判定される（ステップ１０２）。When performing maintenance and inspection of the power supply circuits 5 and 10,
The maintenance and inspection switch 71a is turned on by the maintenance staff (YES in step 101). At the time of this ON operation, the power supply state is determined (step 102).
【００３４】給電回路５または給電回路１０による給電
状態が設定されていれば（ステップ１０２のＹＥＳ）、
非常用バイパス回路１２による給電状態に切り換えてよ
いかどうかを保守員に確認するための案内文が表示部７
２で表示される（ステップ１０３）。表示を見た保守員
が操作部７０で開始操作を行うと（ステップ１０４のＹ
ＥＳ）、交流スイッチ部１１がオン（ステップ１０
６）、交流スイッチ部9がオフ（ステップ１０７）し、
交流負荷４０への給電は給電回路５から給電回路１０へ
切換わる。次に、非常用バイパス回路１２の開閉接点５
６が閉成される（ステップ１０８）ことにより、商用交
流電源３０の電圧が直接的に交流負荷４０に供給され
る。なお、表示を見た保守員が操作部７０で取り消し操
作を行った場合は（ステップ１０５のＹＥＳ）、切換は
なされず、給電回路５，１０のどちらかによる給電状態
が継続する。If the power supply state by the power supply circuit 5 or the power supply circuit 10 is set (YES in step 102),
The display unit 7 displays a guidance message for asking the maintenance person whether the power supply state can be switched to the emergency bypass circuit 12.
2 is displayed (step 103). When the maintenance person who has seen the display performs a start operation on the operation unit 70 (Y in step 104).
ES), the AC switch section 11 is turned on (step 10).
6) The AC switch unit 9 is turned off (step 107),
The power supply to the AC load 40 is switched from the power supply circuit 5 to the power supply circuit 10. Next, the switching contact 5 of the emergency bypass circuit 12
6 is closed (step 108), the voltage of the commercial AC power supply 30 is directly supplied to the AC load 40. If the maintenance person who has seen the display performs a cancel operation using the operation unit 70 (YES in step 105), the switching is not performed and the power supply state by one of the power supply circuits 5 and 10 continues.
【００３５】上記開閉接点５６の閉成後、開閉接点５
３，５４，５５が開放される（ステップ１０９）。さら
に、インバータ部８の運転を停止し（ステップ１１
０）、開閉接点５１，５２が開放されるとともに（ステ
ップ１１１）、整流部６の運転が停止される（ステップ
１１２）。After the switching contact 56 is closed, the switching contact 5
3, 54 and 55 are released (step 109). Further, the operation of the inverter unit 8 is stopped (step 11).
0), the switching contacts 51 and 52 are opened (step 111), and the operation of the rectifying unit 6 is stopped (step 112).
【００３６】こうして、非常用バイパス回路１２による
給電状態への切換が完了し、その旨の案内文が表示部７
２で表示される（ステップ１１３）。この非常用バイパ
ス回路１２による給電状態が設定されることにより、給
電回路５，１０の保守点検を行うことができる。In this manner, the switching to the power supply state by the emergency bypass circuit 12 is completed, and a guidance message to that effect is displayed on the display unit 7.
2 is displayed (step 113). By setting the power supply state by the emergency bypass circuit 12, maintenance and inspection of the power supply circuits 5 and 10 can be performed.
【００３７】保守点検が終了すると、保守員により、保
守点検スイッチ７１ａが再びオン操作される（ステップ
１０１のＹＥＳ）。このオン操作時、給電状態が判定さ
れる（ステップ１０２）。When the maintenance and inspection are completed, the maintenance and inspection switch 71a is turned on again by the maintenance staff (YES in step 101). At the time of this ON operation, the power supply state is determined (step 102).
【００３８】この場合、非常用バイパス回路１２による
給電状態が設定されているので（ステップ１０２のＮ
Ｏ）、給電回路５，１０による給電状態に切り換えてよ
いかどうかを保守員に確認するための案内文が表示部７
２で表示される（ステップ１１４）。表示を見た保守員
が操作部７０で開始操作を行うと（ステップ１１５のＹ
ＥＳ）、給電回路５の開閉接点５１が閉成される（ステ
ップ１１７）。なお、表示を見た保守員が操作部７０で
取り消し操作を行った場合は（ステップ１１６のＹＥ
Ｓ）、切換はなされず、非常用バイパス回路１２による
給電状態が継続する。In this case, since the power supply state by the emergency bypass circuit 12 is set (N in step 102).
O), a guidance message for confirming with the maintenance staff whether the power supply circuit 5 or 10 can be switched to the power supply state is displayed on the display unit 7.
2 is displayed (step 114). When the maintenance person who saw the display performs a start operation on the operation unit 70 (Y in step 115).
ES), the switching contact 51 of the power supply circuit 5 is closed (step 117). If the maintenance person who saw the display performed a cancel operation using the operation unit 70 (YE in step 116).
S), no switching is performed, and the power supply state by the emergency bypass circuit 12 continues.
【００３９】上記開閉接点５１の閉成後、電圧検知器６
１の検知結果に基づき、給電回路５への交流電源電圧の
入力の有無が判定される（ステップ１１８）。After the switching contact 51 is closed, the voltage detector 6
Based on the detection result of 1, the presence or absence of the input of the AC power supply voltage to the power supply circuit 5 is determined (step 118).
【００４０】交流電源電圧の入力が有れば（ステップ１
１８のＹＥＳ）、整流部６が運転され（ステップ１１
９）、開閉接点５２が閉成される（ステップ１２０）。
そして、電圧検知器６２の検知結果に基づき、インバー
タ部８への直流電圧の入力の有無が判定される（ステッ
プ１２１）。If an AC power supply voltage is input (step 1)
18 (YES), the rectifier 6 is operated (step 11).
9), the switching contact 52 is closed (step 120).
Then, based on the detection result of the voltage detector 62, it is determined whether or not a DC voltage has been input to the inverter unit 8 (step 121).
【００４１】直流電圧の入力が有れば（ステップ１２１
のＹＥＳ）、開閉接点５４が閉成される（ステップ１２
２）。そして、電圧検知器６５の検知結果に基づき、給
電回路１０への交流電源電圧の入力の有無が判定される
（ステップ１２３）。If there is a DC voltage input (step 121)
YES), the open / close contact 54 is closed (step 12).
2). Then, based on the detection result of the voltage detector 65, the presence or absence of the input of the AC power supply voltage to the power supply circuit 10 is determined (step 123).
【００４２】交流電源電圧の入力が有れば（ステップ１
２３のＹＥＳ）、インバータ部８が運転され（ステップ
１２４）、そのインバータ部８の出力電圧と電圧検知器
６５の検知電圧（交流電源電圧）との同期（周波数およ
び位相の一致）が確認され、同期がずれている場合はそ
のずれを解消する方向にインバータ部８の出力電圧が調
整される（ステップ１２５）。If an AC power supply voltage is input (step 1)
23), the inverter unit 8 is operated (step 124), and synchronization (coincidence of frequency and phase) between the output voltage of the inverter unit 8 and the detection voltage (AC power supply voltage) of the voltage detector 65 is confirmed, If the synchronization is out of sync, the output voltage of the inverter 8 is adjusted in a direction to eliminate the out-of-sync (step 125).
【００４３】続いて、開閉接点５５が閉成され（ステッ
プ１２６）、交流スイッチ部１１がオンされる（ステッ
プ１２７）。そして、電圧検知器６６の検知結果に基づ
き、交流スイッチ部１１の出力電圧の有無が判定される
（ステップ１２８）。Subsequently, the open / close contact 55 is closed (step 126), and the AC switch unit 11 is turned on (step 127). Then, based on the detection result of the voltage detector 66, the presence or absence of the output voltage of the AC switch unit 11 is determined (step 128).
【００４４】交流スイッチ部１１の出力電圧が有れば
（ステップ１２８のＹＥＳ）、非常用バイパス回路１２
の開閉接点５６が開放される（ステップ１２９）。そし
て、電圧検知器６４の検知結果に基づき、交流負荷４０
への給電の有無が判定される（ステップ１３０）。If the output voltage of the AC switch section 11 is present (YES in step 128), the emergency bypass circuit 12
Is opened (step 129). Then, based on the detection result of the voltage detector 64, the AC load 40
It is determined whether power is supplied to the power supply (step 130).
【００４５】交流負荷４０への給電が有れば（ステップ
１３０のＹＥＳ）、開閉接点５３が閉成され（ステップ
１３１のＹＥＳ）、交流スイッチ部９がオンされる（ス
テップ１３２）。そして、状態検出部６８により、交流
スイッチ部９が正常に作動しているか否かが検出される
（ステップ１３３）。If power is supplied to the AC load 40 (YES in step 130), the open / close contact 53 is closed (YES in step 131), and the AC switch unit 9 is turned on (step 132). Then, the state detection section 68 detects whether or not the AC switch section 9 is operating normally (step 133).
【００４６】交流スイッチ部９が正常に作動していれば
（ステップ１３３のＹＥＳ）、交流スイッチ部１１がオ
フされる（ステップ１３４）。そして、状態検出部６９
により、交流スイッチ部１１が正常に作動しているか否
かが検出される（ステップ１３５）。If the AC switch section 9 is operating normally (YES in step 133), the AC switch section 11 is turned off (step 134). Then, the state detector 69
As a result, it is detected whether or not the AC switch unit 11 is operating normally (step 135).
【００４７】交流スイッチ部１１が正常に作動していれ
ば（ステップ１３５のＹＥＳ）、電圧検知器６４の検知
結果に基づき、交流負荷４０への給電の有無が判定され
る（ステップ１３６）。If the AC switch section 11 is operating normally (YES in step 135), it is determined whether power is supplied to the AC load 40 based on the detection result of the voltage detector 64 (step 136).
【００４８】交流負荷４０への給電が有れば（ステップ
１３６のＹＥＳ）、給電回路１０による給電状態への切
換が完了したとの判断の下に、その旨の案内文が表示部
７２で表示される（ステップ１３７）。ステップ１１
８，１２１，１２３，１２８，１３３の判定が否定（Ｎ
Ｏ）の場合には、切換が中断され（ステップ１３８）、
異常の旨の案内文が表示部７２で表示される（ステップ
１３９）。この場合、非常用バイパス回路１２の開閉接
点５６が閉じたままなので、交流負荷４０への給電が絶
えることはない。If power is supplied to the AC load 40 (YES in step 136), a guide message to that effect is displayed on the display unit 72 based on the determination that the switching to the power supply state by the power supply circuit 10 is completed. Is performed (step 137). Step 11
The determination of 8, 121, 123, 128, 133 is negative (N
In the case of O), the switching is interrupted (step 138),
A guidance message indicating the abnormality is displayed on the display unit 72 (step 139). In this case, since the switching contact 56 of the emergency bypass circuit 12 remains closed, the power supply to the AC load 40 is not interrupted.
【００４９】ステップ１３０，１３５，１３６の判定が
否定（ＮＯ）の場合には、一旦開放された開閉接点５６
が直ちに閉成されるとともに（ステップ１４０）、接点
５３，５５が開放され（ステップ１３９−２）、異常の
旨の案内文が表示部７２で表示される（ステップ１３
９）。この場合、非常用バイパス回路１２の開閉接点５
６が閉成されることで、交流負荷４０への給電が直ちに
回復される。If the determination in steps 130, 135, and 136 is negative (NO), the open / close contact 56 once opened
Is immediately closed (step 140), the contacts 53 and 55 are opened (step 139-2), and a guidance message indicating an abnormality is displayed on the display unit 72 (step 13).
9). In this case, the switching contact 5 of the emergency bypass circuit 12
By closing 6, power supply to AC load 40 is immediately restored.
【００５０】以上のように、給電回路５，１０および非
常用バイパス回路１２の状態を監視し、その監視結果に
基づいて交流負荷４０への給電が絶えないよう各開閉接
点を制御することにより、交流負荷４０への給電を絶や
すことなく、給電状態を自動的にしかも確実に切り換え
ることができ、高い安全性および信頼性を確保すること
ができる。保守員とっては、操作部７１を操作するだけ
でよく、従来のような手動開閉器の操作や各部の機能確
認が不要となり、負担が大幅に軽減される。なお、この
発明は上記実施形態に限定されるものではなく、要旨を
変えない範囲で種々変形実施可能である。As described above, by monitoring the states of the power supply circuits 5 and 10 and the emergency bypass circuit 12 and controlling the switching contacts so as to keep the power supply to the AC load 40 constant based on the monitoring results, The power supply state can be automatically and reliably switched without interrupting the power supply to the AC load 40, and high safety and reliability can be secured. The maintenance staff only needs to operate the operation unit 71, and the operation of the manual switch and the confirmation of the function of each unit as in the related art are not required, and the burden is greatly reduced. The present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.
【００５１】[0051]
【発明の効果】以上述べたようにこの発明によれば、保
守員の手作業に頼ることなく、負荷への給電を絶やすこ
となく、給電状態を自動的にしかも確実に切り換えるこ
とができ、これにより安全性および信頼性の向上が図れ
るとともに保守員にかかる負担を大幅に軽減し得る無停
電電源装置を提供できる。As described above, according to the present invention, the power supply state can be automatically and reliably switched without relying on the manual work of maintenance personnel and without interrupting the power supply to the load. Thus, it is possible to provide an uninterruptible power supply that can improve safety and reliability and can greatly reduce the burden on maintenance personnel.
【図１】一実施形態の構成を示すブロック図。FIG. 1 is a block diagram showing a configuration of an embodiment.
【図２】同実施形態の作用を説明するためのフローチャ
ート。FIG. 2 is a flowchart for explaining the operation of the embodiment.
【図３】図２に続くフローチャート。FIG. 3 is a flowchart following FIG. 2;
【図４】従来装置の構成を示すブロック図。FIG. 4 is a block diagram showing a configuration of a conventional device.
１…無停電電源装置 ２，３…入力端子 ４…出力端子 ５…第１給電回路 ６…整流部 ７…蓄電池 ８…インバータ部 ９，１１…交流スイッチ部 １０…第２給電回路 １２…非常用バイパス回路 ４０…交流負荷 ５１，５２，５３，５４，５５，５６…開閉接点 ６１，６２，６３，６４，６５，６６…電圧検知器 ７０…制御部 ７１…操作部 ７１ａ…保守点検スイッチ ７２…表示部 DESCRIPTION OF SYMBOLS 1 ... Uninterruptible power supply 2, 3 ... Input terminal 4 ... Output terminal 5 ... 1st power supply circuit 6 ... Rectification part 7 ... Storage battery 8 ... Inverter part 9, 11 ... AC switch part 10 ... 2nd power supply circuit 12 ... Emergency use Bypass circuit 40 AC load 51, 52, 53, 54, 55, 56 Opening / closing contact 61, 62, 63, 64, 65, 66 Voltage detector 70 Control unit 71 Operation unit 71a Maintenance check switch 72 Display
───────────────────────────────────────────────────── フロントページの続き (72)発明者 橋脇 正浩 東京都港区芝浦三丁目４番１号 株式会社 エヌ・ティ・ティファシリティーズ内 (72)発明者 村上 直樹 東京都港区芝浦三丁目４番１号 株式会社 エヌ・ティ・ティファシリティーズ内 (72)発明者 武田 勉 東京都港区芝浦三丁目４番１号 株式会社 エヌ・ティ・ティファシリティーズ内 Ｆターム(参考） 5G015 FA18 GA07 JA05 JA09 JA24 JA32 JA34 JA42 JA52 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Hashiwaki 3-4-1 Shibaura, Minato-ku, Tokyo Inside NTT Facilities Corporation (72) Inventor Naoki Murakami 3-chome, Shibaura, Minato-ku, Tokyo No. 1 Inside NTT Facilities Co., Ltd. (72) Inventor Tsutomu Takeda 3-1, Shibaura, Minato-ku, Tokyo F-Term within NTT Facilities Co., Ltd. 5G015 FA18 GA07 JA05 JA09 JA24 JA32 JA34 JA42 JA52
Claims (6)
電を行う給電回路と、 この給電回路に並列に接続された非常用バイパス回路
と、 前記給電回路および前記非常用バイパス回路にそれぞれ
設けられた開閉接点と、 前記給電回路および前記非常用バイパス回路の状態を監
視する監視手段と、 この監視手段の監視結果に基づいて前記負荷への給電が
絶えないよう前記各開閉接点を制御し、前記給電回路に
よる給電と前記非常用バイパス回路による給電とを切換
える制御手段と、 を具備したことを特徴とする無停電電源装置。A power supply circuit for supplying power to a load regardless of a power failure of an AC power supply; an emergency bypass circuit connected in parallel with the power supply circuit; and a power supply circuit provided in the power supply circuit and the emergency bypass circuit. And a monitoring means for monitoring the state of the power supply circuit and the emergency bypass circuit.Based on a monitoring result of the monitoring means, controlling each of the switching contacts so that power supply to the load is not interrupted, Control means for switching between power supply by a power supply circuit and power supply by the emergency bypass circuit.
電を行う第１給電回路と、 この第１給電回路が異常の場合に前記交流電源から前記
負荷への直接的な給電を行う第２給電回路と、 これら給電回路に並列に接続された非常用バイパス回路
と、 前記第１給電回路、前記第２給電回路、および前記非常
用バイパス回路にそれぞれ設けられた開閉接点と、 前記第１給電回路、前記第２給電回路、および前記非常
用バイパス回路の状態を監視する監視手段と、 この監視手段の監視結果に基づいて前記負荷への給電が
絶えないよう前記各開閉接点を制御し、前記各給電回路
による給電と前記非常用バイパス回路による給電とを切
換える制御手段と、 を具備したことを特徴とする無停電電源装置。2. A first power supply circuit for supplying power to a load regardless of a power failure of an AC power supply, and a second power supply circuit for directly supplying power from the AC power supply to the load when the first power supply circuit is abnormal. A power supply circuit; an emergency bypass circuit connected in parallel to the power supply circuits; an open / close contact provided in each of the first power supply circuit, the second power supply circuit, and the emergency bypass circuit; Monitoring means for monitoring the state of the circuit, the second power supply circuit, and the emergency bypass circuit; and controlling each of the open / close contacts based on the monitoring result of the monitoring means so that power supply to the load is not interrupted. Control means for switching between power supply by each power supply circuit and power supply by the emergency bypass circuit.
に接続される出力端子と、 前記入力端子と前記出力端子との間に接続され、かつ入
力端子への入力電圧を直流電圧に変換する整流部、この
整流部の出力端に接続された蓄電池、この蓄電池の電圧
または前記整流部の出力電圧を交流電圧に変換するイン
バータ部を有するとともに、このインバータ部と出力端
子との接続間に通電制御用の第１交流スイッチ部を有
し、前記交流電源の停電にかかわらず前記負荷への給電
を行う第１給電回路と、 前記入力端子と前記出力端子との間に接続され、かつ通
電制御用の第２交流スイッチ部を有し、前記第１給電回
路が異常の場合に前記交流電源から前記負荷への直接的
な給電を行う第２給電回路と、 前記入力端子と前記出力端子との間に接続された非常用
バイパス回路と、 前記第１給電回路、前記第２給電回路、および前記非常
用バイパス回路にそれぞれ設けられた開閉接点と、 前記第１給電回路、前記第２給電回路、および前記非常
用バイパス回路の状態を監視する監視手段と、 この監視手段の監視結果に基づいて前記負荷への給電が
絶えないよう前記各開閉接点および前記各交流スイッチ
部を制御し、前記各給電回路による給電と前記非常用バ
イパス回路による給電とを切換える制御手段と、 を具備したことを特徴とする無停電電源装置。3. An input terminal connected to an AC power supply, an output terminal connected to a load, and an input terminal connected between the input terminal and the output terminal and converting an input voltage to the input terminal into a DC voltage. Rectifier, a storage battery connected to the output end of the rectifier, an inverter for converting the voltage of the storage battery or the output voltage of the rectifier to an AC voltage, and between the connection between the inverter and the output terminal. A first power supply circuit having a first AC switch unit for energization control, and supplying power to the load regardless of a power failure of the AC power supply; a first power supply circuit connected between the input terminal and the output terminal; A second power supply circuit that has a second AC switch unit for control and performs direct power supply from the AC power supply to the load when the first power supply circuit is abnormal; and the input terminal and the output terminal. Connected between An emergency bypass circuit; switching contacts provided in the first power supply circuit, the second power supply circuit, and the emergency bypass circuit, respectively; the first power supply circuit, the second power supply circuit, and the emergency bypass Monitoring means for monitoring the state of the circuit, based on the monitoring result of the monitoring means, controlling each of the on-off contacts and each of the AC switch sections so that power supply to the load is not interrupted; Control means for switching between power supply by an emergency bypass circuit, and an uninterruptible power supply device.
に接続される出力端子と、 前記入力端子と前記出力端子との間に接続され、入力端
子への入力電圧を直流電圧に変換する整流部、この整流
部の出力端に接続された蓄電池、この蓄電池の電圧また
は前記整流部の出力電圧を交流電圧に変換するインバー
タ部を有し、このインバータ部と出力端子への接続間に
通電制御用の第１交流スイッチ部を有し、前記交流電源
の停電にかかわらず前記負荷への給電を行う第１給電回
路と、 前記入力端子と前記出力端子との間に接続され、かつ通
電制御用の第２交流スイッチ部を有し、前記第１給電回
路が異常の場合に前記交流電源から前記負荷への直接的
な給電を行う第２給電回路と、 前記入力端子と前記出力端子との間に接続された非常用
バイパス回路と、 前記入力端子と前記整流部との接続間、前記整流部およ
び前記インバータ部と前記蓄電池との接続間、前記第１
交流スイッチ部と前記出力端子との接続間、前記入力端
子と前記第２交流スイッチ部との接続間、および前記第
２交流スイッチ部と前記出力端子との接続間、および前
記非常用バイパス回路にそれぞれ設けられた開閉接点
と、 前記第１給電回路、前記第２給電回路、および前記非常
用バイパス回路の状態を監視する監視手段と、 この監視手段の監視結果に基づいて前記負荷への給電が
絶えないよう前記各開閉接点、前記各交流スイッチ部、
前記整流部、および前記インバータ部を制御し、前記各
給電回路による給電と前記非常用バイパス回路による給
電とを切換える制御手段と、 を具備したことを特徴とする無停電電源装置。4. An input terminal connected to an AC power supply, an output terminal connected to a load, and connected between the input terminal and the output terminal, for converting an input voltage to the input terminal into a DC voltage. A rectifying unit, a storage battery connected to an output terminal of the rectifying unit, and an inverter unit for converting a voltage of the storage battery or an output voltage of the rectifying unit to an AC voltage, and conducting electricity between the inverter unit and a connection to an output terminal. A first power supply circuit having a first AC switch unit for control and supplying power to the load regardless of a power failure of the AC power supply; and a power supply control connected between the input terminal and the output terminal. A second power supply circuit for directly supplying power from the AC power supply to the load when the first power supply circuit is abnormal, and a second power supply circuit for the input terminal and the output terminal. Emergency bypass connected between A circuit; a connection between the input terminal and the rectifier; a connection between the rectifier and the inverter and the storage battery;
Between the connection between the AC switch section and the output terminal, between the connection between the input terminal and the second AC switch section, between the connection between the second AC switch section and the output terminal, and in the emergency bypass circuit. Switching contacts provided respectively; monitoring means for monitoring states of the first power supply circuit, the second power supply circuit, and the emergency bypass circuit; and power supply to the load based on a monitoring result of the monitoring means. Each open / close contact, each AC switch section,
An uninterruptible power supply device comprising: a control unit that controls the rectifying unit and the inverter unit, and switches between power supply by the power supply circuits and power supply by the emergency bypass circuit.
載の無停電電源装置において、 保守点検用の操作手段をさらに設け、 前記制御手段は、前記操作手段の操作に応じて制御を実
行する、ことを特徴とする無停電電源装置。5. The uninterruptible power supply according to claim 1, further comprising an operation means for maintenance and inspection, wherein said control means executes control according to an operation of said operation means. An uninterruptible power supply.
載の無停電電源装置において、 前記制御手段は、前記監視手段の監視結果が適正でない
場合に制御を中断してその旨を報知することを特徴とす
る無停電電源装置。6. The uninterruptible power supply according to claim 1, wherein the control unit interrupts the control when the monitoring result of the monitoring unit is not appropriate, and notifies the user of the interruption. An uninterruptible power supply characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000054545A JP3480918B2 (en) | 2000-02-29 | 2000-02-29 | Uninterruptible power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000054545A JP3480918B2 (en) | 2000-02-29 | 2000-02-29 | Uninterruptible power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001245444A true JP2001245444A (en) | 2001-09-07 |
| JP3480918B2 JP3480918B2 (en) | 2003-12-22 |
Family
ID=18575784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000054545A Expired - Fee Related JP3480918B2 (en) | 2000-02-29 | 2000-02-29 | Uninterruptible power system |
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| Country | Link |
|---|---|
| JP (1) | JP3480918B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001245443A (en) * | 2000-02-29 | 2001-09-07 | Sanyo Denki Co Ltd | Uninterruptible power supply device |
| JP2009171760A (en) * | 2008-01-17 | 2009-07-30 | Fuji Electric Systems Co Ltd | Uninterruptible power supply |
| JP2013538033A (en) * | 2010-09-10 | 2013-10-07 | 三星エスディアイ株式会社 | Energy storage system and control method thereof |
| JP2014193107A (en) * | 2013-03-26 | 2014-10-06 | Min-Jing Hsieh | Highly reliable static transfer switch circuit for uninterruptible power supply system |
| US9041354B2 (en) | 2009-12-23 | 2015-05-26 | Samsung Sdi Co., Ltd. | Energy storage system and method of controlling the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631193B (en) * | 2013-12-13 | 2016-01-20 | 东北大学 | A kind ofly realize the system and method that equipment control mode concentrates bumpless transfer |
-
2000
- 2000-02-29 JP JP2000054545A patent/JP3480918B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001245443A (en) * | 2000-02-29 | 2001-09-07 | Sanyo Denki Co Ltd | Uninterruptible power supply device |
| JP2009171760A (en) * | 2008-01-17 | 2009-07-30 | Fuji Electric Systems Co Ltd | Uninterruptible power supply |
| US9041354B2 (en) | 2009-12-23 | 2015-05-26 | Samsung Sdi Co., Ltd. | Energy storage system and method of controlling the same |
| JP2013538033A (en) * | 2010-09-10 | 2013-10-07 | 三星エスディアイ株式会社 | Energy storage system and control method thereof |
| JP2014193107A (en) * | 2013-03-26 | 2014-10-06 | Min-Jing Hsieh | Highly reliable static transfer switch circuit for uninterruptible power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3480918B2 (en) | 2003-12-22 |
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