JPH0731148A - Uninterruptible power supply - Google Patents
Uninterruptible power supplyInfo
- Publication number
- JPH0731148A JPH0731148A JP5194019A JP19401993A JPH0731148A JP H0731148 A JPH0731148 A JP H0731148A JP 5194019 A JP5194019 A JP 5194019A JP 19401993 A JP19401993 A JP 19401993A JP H0731148 A JPH0731148 A JP H0731148A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- unit
- rectifier
- voltage
- power supply
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Rectifiers (AREA)
- Inverter Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は交流電力を受電し負荷に
安定した交流電力を供給する無停電電源装置に関する。
詳しくは蓄電池の容量(交流入力停電時における蓄電池
運転の時間に対応し、長時間運転の場合に蓄電池容量を
大きくする)に対応して、整流器ユニット数を変えて構
成できるようにし、装置の蓄電池による運転時間延長に
フレキシブルに対応できるようにした無停電電源装置の
構成に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply device which receives AC power and supplies stable AC power to a load.
Specifically, the number of rectifier units can be changed according to the capacity of the storage battery (corresponding to the time of storage battery operation during AC input power failure, and increasing the storage battery capacity during long-term operation). The present invention relates to the configuration of an uninterruptible power supply device that can flexibly respond to the extension of the operating time.
【0002】[0002]
【従来の技術】図3に従来の無停電電源装置の構成例を
示す。図3において、1は入力である交流電源、2は整
流器部、3はインバータ部、4は負荷、5は蓄電池部で
ある。交流電源1からの交流電力を受電し、整流器部2
にて一旦整流して直流電圧として更にDC−DCコンバ
ータによって入力とは絶縁した所望の直流電圧に変換す
る。整流器部2の出力で蓄電池を浮動充電するとともに
インバータ部3に給電し、整流器部2又は交流入力1の
停電時には蓄電池部5からの直流電圧をインバータ部3
にて、直流電圧を所望の周波数の交流電圧に変換し、無
停電にて負荷4へ交流電力を供給する。本構成において
無停電電源装置の蓄電池部5の容量は負荷4が交流入力
停電時において必要とされる蓄電池による運転時間によ
り決める。装置の蓄電池による運転時間として、一般の
コンピュータへの給電等の用途では約10分、長くは公
衆通信設備用としては24時間位まで必要とするもので
あり、必要とされる運転時間は様々である。蓄電池部5
の容量が変わると充電電流が変わる為、蓄電池部5の容
量が変わる毎に整流器部2の容量を変えて対応する事が
必要であり、フレキシブルな対応ができない。すなわち
無停電電源装置を設置後、長時間蓄電池運転の必要が生
じた場合、無停電電源装置は容量の大きなものと交換し
なければならない欠点があった。2. Description of the Related Art FIG. 3 shows a configuration example of a conventional uninterruptible power supply. In FIG. 3, 1 is an input AC power supply, 2 is a rectifier unit, 3 is an inverter unit, 4 is a load, and 5 is a storage battery unit. AC power from AC power supply 1 is received and rectifier unit 2
Then, it is rectified once and converted into a direct current voltage, which is further converted by a DC-DC converter into a desired direct current voltage insulated from the input. The storage battery is floatingly charged by the output of the rectifier unit 2 and is fed to the inverter unit 3, and the DC voltage from the storage battery unit 5 is supplied to the inverter unit 3 when the rectifier unit 2 or the AC input 1 fails.
At, the DC voltage is converted into an AC voltage having a desired frequency, and AC power is supplied to the load 4 uninterruptedly. In this configuration, the capacity of the storage battery unit 5 of the uninterruptible power supply is determined by the operation time of the storage battery required by the load 4 during AC input power failure. The operating time of the storage battery of the device is about 10 minutes for the use such as power supply to a general computer, and up to about 24 hours for public communication equipment, and the operating time required varies. is there. Storage battery part 5
Since the charging current changes when the capacity of the storage battery changes, it is necessary to change the capacity of the rectifier unit 2 every time the capacity of the storage battery unit 5 changes, and it is not possible to flexibly handle the change. That is, if the storage battery needs to be operated for a long time after the uninterruptible power supply is installed, the uninterruptible power supply has to be replaced with one having a large capacity.
【0003】[0003]
【発明が解決しようとする課題】このように無停電電源
装置の蓄電池を増容量化し、交流入力停電時における蓄
電池による運転時間の延長とするシステムにおいて、装
置の蓄電池の運転時間の延長にフレキシブルに対応する
という課題がある。本発明は上記課題の解決策として提
案されたもので、その目的は、装置の蓄電池の運転時間
の延長にフレキシブルに対応できる無停電電源装置を提
供することにある。In such a system in which the capacity of the storage battery of the uninterruptible power supply is increased and the operating time of the storage battery is extended at the time of AC input power failure, it is possible to flexibly extend the operating time of the storage battery of the device. There is a challenge to respond. The present invention has been proposed as a solution to the above problem, and an object thereof is to provide an uninterruptible power supply device that can flexibly cope with the extension of the operating time of the storage battery of the device.
【0004】[0004]
【課題を解決するための手段】上記の目的を達成するた
め、本発明は受電した交流電力を、一旦整流して第1の
直流電圧とし、改めてDC−DCコンバータによって入
力とは絶縁した第2の直流電圧に変換する整流器部、前
記第2の直流電圧を交流電圧に変換しフィルタによって
高周波電圧を減衰させてから出力するインバータ部及び
蓄電池部を備え、DC−DCコンバータ出力で蓄電池を
浮動充電するとともに無停電にて負荷へ交流電力を供給
する無停電電源装置において、整流器部を複数の整流器
ユニットを並列接続して構成し、並列接続ユニット数は
蓄電池部の所望充電電流値に対応して選定し、装置筺体
にはあらかじめ想定される、整流器ユニットの最大数を
搭載できる実装スペースを確保しておくことを特徴とす
る無停電電源装置を発明の要旨とするものである。In order to achieve the above-mentioned object, the present invention rectifies the received AC power once into a first DC voltage, and a second DC-DC converter again insulates the input from the input. A rectifier unit for converting the second DC voltage into an AC voltage, an inverter unit for converting the second DC voltage into an AC voltage and attenuating the high frequency voltage with a filter, and then outputting the AC voltage. In the uninterruptible power supply that supplies AC power to the load uninterruptedly, the rectifier unit is configured by connecting multiple rectifier units in parallel, and the number of units connected in parallel corresponds to the desired charging current value of the storage battery unit. An uninterruptible power supply characterized by securing a mounting space for the maximum number of rectifier units that can be selected and installed beforehand in the device housing. In which mode of the invention.
【0005】[0005]
【作用】本発明は、蓄電池の容量に対応して、整流器ユ
ニット搭載数を選定して使用するので、蓄電池の長時間
の運転に対してフレキシブルに対応することができる。According to the present invention, since the number of rectifier units mounted is selected and used according to the capacity of the storage battery, it is possible to flexibly cope with long-term operation of the storage battery.
【0006】[0006]
【実施例】以下本発明の実施例について説明する。図1
は本発明の一実施例を示す。図において、1は交流電
源、2は整流器部、3はインバータ部、4は負荷、5は
蓄電池で構成される蓄電池部、6は整流器部を構成する
同一の構成の整流器ユニットである。図1は整流器ユニ
ット6が3ユニットの場合の接続の例を示す。図におい
て、交流入力1を受電し整流器ユニット6にて一旦整流
して直流電圧とし、改めてDC−DCコンバータによっ
て入力とは絶縁した直流電圧に変換して所望のレベルの
直流電圧にする。整流器ユニット6は2組の出力X,Y
を有し、Xの出力は並列に接続されインバータ部3に給
電する。Yの出力は並列に接続され蓄電池部5を浮動充
電する。蓄電池部5の放電時はダイオード7を介してイ
ンバータ部3に給電する。交流入力1の停電時には蓄電
池部5からの直流電圧をインバータ部3にて、直流電圧
を所望の周波数の交流に変換して、無停電で負荷4に交
流電力を供給する。蓄電池部5の蓄電池の容量に対応し
て整流器ユニット6の搭載数を選定する。無停電電源装
置には、あらかじめ想定される整流器ユニットの最大数
に対応した実装スペースを確保しておく。無停電電源装
置の蓄電池による運転時間の延長を図るとき、蓄電池の
容量の追加が必要であり、蓄電池部5の蓄電池が追加さ
れる。この蓄電池の合計の容量に対応する所望充電電流
に対して、必要とされる整流器ユニットの数を選定し装
置に搭載することによりフレキシブルな対応ができる。
具体例として無停電電源装置の蓄電池による運転時間が
約10分、整流器ユニットが1台で構成されている場合
において、蓄電池による運転時間の延長を行う時は蓄電
池を追加し、整流器ユニットを追加搭載することにより
整流器ユニット2台で約30分、3台で約1時間、5台
で約2時間に蓄電池による運転時間の延長を容易に行う
ことができる。EXAMPLES Examples of the present invention will be described below. Figure 1
Shows an embodiment of the present invention. In the figure, 1 is an AC power source, 2 is a rectifier unit, 3 is an inverter unit, 4 is a load, 5 is a storage battery unit composed of a storage battery, and 6 is a rectifier unit of the same configuration that constitutes a rectifier unit. FIG. 1 shows an example of connection when the rectifier unit 6 is three units. In the figure, the AC input 1 is received and is once rectified by a rectifier unit 6 into a DC voltage, which is converted into a DC voltage insulated from the input by a DC-DC converter, and converted into a DC voltage of a desired level. The rectifier unit 6 has two sets of outputs X and Y.
, And the outputs of X are connected in parallel to supply power to the inverter unit 3. The outputs of Y are connected in parallel to floatingly charge the storage battery unit 5. When the storage battery unit 5 is discharged, power is supplied to the inverter unit 3 via the diode 7. During a power failure of the AC input 1, the DC voltage from the storage battery unit 5 is converted into an AC of a desired frequency by the inverter unit 3, and AC power is supplied to the load 4 without interruption. The number of rectifier units 6 mounted is selected according to the capacity of the storage battery of the storage battery unit 5. In the uninterruptible power supply, secure a mounting space that corresponds to the maximum number of rectifier units expected in advance. When the operation time of the uninterruptible power supply device is extended by the storage battery, it is necessary to add the capacity of the storage battery, and the storage battery of the storage battery unit 5 is added. It is possible to flexibly cope with the desired charging current corresponding to the total capacity of the storage battery by selecting the required number of rectifier units and mounting them in the device.
As a specific example, if the operating time of the storage battery of the uninterruptible power supply is about 10 minutes and the rectifier unit is composed of one unit, when extending the operating time of the storage battery, the storage battery is added and the rectifier unit is additionally installed. By doing so, it is possible to easily extend the operating time by the storage battery in about 30 minutes for two rectifier units, about 1 hour for three rectifier units, and about 2 hours for five rectifier units.
【0007】図2に整流器ユニット6の実施例を示す。
図において、整流器ユニット6は入力端子aに交流電力
を受電し、REC部10で整流しDC−DCコンバータ
11にて入力とは絶縁した直流電圧VDに変換し、逆流
阻止用のダイオードD1を介して端子に出力し、インバ
ータ部3に供給する。12はDC−DCコンバータ11
の制御回路であり、直流電圧VDをフィードバックし安
定した所望の直流電圧とするように制御を行う。直流電
圧VDはリアクトルL1、電流検出器13及びダイオー
ドD2を介して端子Yに出力して蓄電池部5の蓄電池の
充電を行う。リアクトルL1は蓄電池部5への充電電流
のリップル電流の低減を行う。なお、図2において、整
流器ユニット6のダイオードD1及びD2は整流器ユニ
ットの外部に実装しても等価である。13は蓄電池部5
への充電電流を検出する電流検出器であり、電流検出器
13の信号を制御回路12に入力し蓄電池の充電電流を
検出し一定の電流値となるようにDC−DCコンバータ
11の出力である直流電圧VDを制御する。蓄電池部5
の出力は逆流阻止用のダイオード7を介してインバータ
部3に供給される。この構成とすることにより蓄電池の
容量増に対応して整流器ユニット6の搭載数を増加する
ことができ、蓄電池の運転時間延長がフレキシブルに対
応できる。FIG. 2 shows an embodiment of the rectifier unit 6.
In the figure, a rectifier unit 6 receives an AC power at an input terminal a, rectifies it in a REC section 10 and converts it into a DC voltage VD insulated from an input by a DC-DC converter 11, and through a diode D1 for backflow prevention. Output to the terminal and supplied to the inverter unit 3. 12 is a DC-DC converter 11
This control circuit feeds back the DC voltage VD to perform control so that the DC voltage VD becomes a stable desired DC voltage. The DC voltage VD is output to the terminal Y via the reactor L1, the current detector 13 and the diode D2 to charge the storage battery of the storage battery unit 5. Reactor L1 reduces the ripple current of the charging current to storage battery unit 5. Note that, in FIG. 2, the diodes D1 and D2 of the rectifier unit 6 are equivalent when mounted outside the rectifier unit. 13 is the storage battery unit 5
Is a current detector that detects a charging current to the control circuit 12, detects the charging current of the storage battery by inputting the signal of the current detector 13 to the control circuit 12, and outputs the DC-DC converter 11 so as to obtain a constant current value. Controls the DC voltage VD. Storage battery part 5
Is supplied to the inverter unit 3 via the diode 7 for preventing backflow. With this configuration, the number of rectifier units 6 mounted can be increased in response to the increase in the capacity of the storage battery, and the extension of the operating time of the storage battery can be flexibly supported.
【0008】[0008]
【発明の効果】上述した如く本発明は、整流器部を複数
の同一の構成の整流器ユニット並列接続の構成とし、蓄
電池部の所望の充電電流に対応して整流器ユニットの搭
載台数を選定できることにより、交流入力停電時におけ
る蓄電池での運転時間を長時間とする為、蓄電池容量の
増容量化に対応して、整流器ユニットの数を選定し搭載
することにより、蓄電池の運転時間の延長が経済的且つ
フレキシブルに対応できる効果がある。特に公衆電話業
務のように、商用電源停電時も給電を続けなければなら
ない負荷が多くあり、且つ重要度に応じて給電継続時間
にも差があるような場合には、整流器ユニットの数を変
えるだけで同一の無停電電源装置が使える本発明の効果
は大きい。さらに整流器部の容量を複数の整流器ユニッ
トに分割することにより、小形、軽量化することがで
き、故障時及び定期点検時の保守性の向上を図ることが
できる。As described above, according to the present invention, a plurality of rectifier units having the same configuration are connected in parallel, and the number of rectifier units mounted can be selected according to a desired charging current of the storage battery unit. Since the operation time of the storage battery during AC input power failure is long, the number of rectifier units is selected and installed in response to the increase in the capacity of the storage battery. It has the effect of being able to respond flexibly. Especially in the case of public telephone business, where there are many loads that must continue to be supplied with power even when there is a commercial power outage, and the duration of power supply varies depending on the importance, change the number of rectifier units. The effect of the present invention that the same uninterruptible power supply can be used is great. Further, by dividing the capacity of the rectifier unit into a plurality of rectifier units, it is possible to reduce the size and weight of the rectifier unit, and to improve the maintainability at the time of failure and at the time of regular inspection.
【図1】本発明の無停電電源装置の構成を示す。FIG. 1 shows a configuration of an uninterruptible power supply device of the present invention.
【図2】整流器ユニットの構成を示す。FIG. 2 shows a configuration of a rectifier unit.
【図3】従来装置の構成を示す。FIG. 3 shows a configuration of a conventional device.
1 交流電源 2 整流器部 3 インバータ部 4 負荷 5 蓄電池部 6 整流器ユニット 7 ダイオード 10 REC部 11 DC−DCコンバータ 12 制御回路 13 電流検出器 1 AC power supply 2 Rectifier part 3 Inverter part 4 Load 5 Storage battery part 6 Rectifier unit 7 Diode 10 REC part 11 DC-DC converter 12 Control circuit 13 Current detector
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小島 賢三 東京都豊島区北大塚1丁目15番1号 山洋 電気株式会社内 (72)発明者 室山 誠一 東京都千代田区内幸町1丁目1番6号 日 本電信電話株式会社内 (72)発明者 竹内 典和 東京都千代田区内幸町1丁目1番6号 日 本電信電話株式会社内 (72)発明者 湯浅 昌明 東京都台東区上野1丁目10番12号 日本電 気精器株式会社内 (72)発明者 大藤 正明 東京都文京区千石1丁目23番11号 信濃電 気株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenzo Kojima 1-15-1 Kita-Otsuka, Toshima-ku, Tokyo Sanyo Electric Co., Ltd. (72) Seiichi Muroyama 1-1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Norikazu Takeuchi 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Masaaki Yuasa 1-10-12 Ueno, Taito-ku, Tokyo No. Nippon Denki Seiki Co., Ltd. (72) Inventor Masaaki Ofuji 1-23-11 Sengoku, Bunkyo-ku, Tokyo Shinano Denki Co., Ltd.
Claims (2)
の直流電圧とし、改めてDC−DCコンバータによって
入力とは絶縁した第2の直流電圧に変換する整流器部、
前記第2の直流電圧を交流電圧に変換しフィルタによっ
て高周波電圧を減衰させてから出力するインバータ部及
び蓄電池部を備え、DC−DCコンバータ出力で蓄電池
を浮動充電するとともに無停電にて負荷へ交流電力を供
給する無停電電源装置において、 整流器部を複数の整流器ユニットを並列接続して構成
し、並列接続ユニット数は蓄電池部の所望充電電流値に
対応して選定し、装置筺体にはあらかじめ想定される、
整流器ユニットの最大数を搭載できる実装スペースを確
保しておくことを特徴とする無停電電源装置。1. The received AC power is first rectified and first rectified.
Rectifier unit that converts the DC voltage of the DC voltage into a second DC voltage that is insulated from the input by the DC-DC converter.
An inverter unit and a storage battery unit that convert the second DC voltage into an AC voltage and attenuate the high frequency voltage by a filter and then output the AC battery are floatingly charged by the output of the DC-DC converter, and AC to the load without interruption. In an uninterruptible power supply system that supplies electric power, the rectifier unit is configured by connecting multiple rectifier units in parallel, and the number of units connected in parallel is selected according to the desired charging current value of the storage battery unit. Will be
An uninterruptible power supply characterized by securing a mounting space that can accommodate the maximum number of rectifier units.
け、Xは入力電力を整流し、DC−DCコンバータを経
てダイオードを介して出力して、インバータ部に給電
し、Yは前記DC−DCコンバータからの出力を、DC
−DCコンバータの制御部に信号を送出する電流検出
部、リアクトル及びダイオードを介して出力して蓄電池
を充電し、且つ蓄電池電力はダイオードを介して、イン
バータ部に放電する構成としたことを特徴とする請求項
1記載の無停電電源装置。2. A rectifier unit having two sets of outputs, X and Y, wherein X rectifies the input power and outputs it through a diode via a DC-DC converter to supply power to the inverter section, and Y is the DC. -The output from the DC converter is DC
A configuration in which a current detection unit that sends a signal to the control unit of the DC converter, a reactor, and a diode are output to charge the storage battery, and the storage battery power is discharged to the inverter unit via the diode. The uninterruptible power supply according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5194019A JP2923416B2 (en) | 1993-07-09 | 1993-07-09 | Uninterruptible power system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5194019A JP2923416B2 (en) | 1993-07-09 | 1993-07-09 | Uninterruptible power system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0731148A true JPH0731148A (en) | 1995-01-31 |
JP2923416B2 JP2923416B2 (en) | 1999-07-26 |
Family
ID=16317596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5194019A Expired - Fee Related JP2923416B2 (en) | 1993-07-09 | 1993-07-09 | Uninterruptible power system |
Country Status (1)
Country | Link |
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JP (1) | JP2923416B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1246351A2 (en) * | 2001-03-31 | 2002-10-02 | Philips Corporate Intellectual Property GmbH | Circuit for obtaining a DC voltage |
JP2010136458A (en) * | 2007-11-09 | 2010-06-17 | Ntt Data Intellilink Corp | Power supply system |
-
1993
- 1993-07-09 JP JP5194019A patent/JP2923416B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1246351A2 (en) * | 2001-03-31 | 2002-10-02 | Philips Corporate Intellectual Property GmbH | Circuit for obtaining a DC voltage |
EP1246351A3 (en) * | 2001-03-31 | 2002-12-04 | Philips Corporate Intellectual Property GmbH | Circuit for obtaining a DC voltage |
JP2010136458A (en) * | 2007-11-09 | 2010-06-17 | Ntt Data Intellilink Corp | Power supply system |
Also Published As
Publication number | Publication date |
---|---|
JP2923416B2 (en) | 1999-07-26 |
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