JPH04117142A - Uninterruptible power supply - Google Patents
Uninterruptible power supplyInfo
- Publication number
- JPH04117142A JPH04117142A JP2233341A JP23334190A JPH04117142A JP H04117142 A JPH04117142 A JP H04117142A JP 2233341 A JP2233341 A JP 2233341A JP 23334190 A JP23334190 A JP 23334190A JP H04117142 A JPH04117142 A JP H04117142A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- battery
- storage battery
- output
- charged
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は無停電電源装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to an uninterruptible power supply.
（従来の技術）
複数の無停電電源装置を並列運転する場合の従来の構成
として第２図に示すものがある。１゜２は、交流電源に
接続された順変換器であり、３゜４は、順変換器１，２
にそれぞれ接続された逆変換器であり、出力側は１つに
結合されて負荷に接続されている。５は蓄電池であり、
交流入力停電時にオン状態となるサイリスタスイッチ６
．７を介して各逆変換器３，４に直流電力を供電する。(Prior Art) A conventional configuration for operating a plurality of uninterruptible power supplies in parallel is shown in FIG. 2. 1゜2 is a forward converter connected to an AC power supply, 3゜4 is a forward converter 1, 2
and the outputs thereof are coupled together and connected to a load. 5 is a storage battery;
Thyristor switch 6 that turns on during AC input power outage
．． DC power is supplied to each of the inverters 3 and 4 via the inverter 7.
８は、蓄電池５を充電するための充電器である。8 is a charger for charging the storage battery 5.
このように構成された無停電電源装置においては、蓄電
池５は数カ月毎に通常の充電電圧である浮動電圧Ｅｆよ
りも１０〜１５％程度高い電圧、いわゆる均等電圧ＩＥ
ｅｑで充電することを必要とする。In the uninterruptible power supply configured in this way, the storage battery 5 is charged every few months at a voltage that is about 10 to 15% higher than the floating voltage Ef, which is the normal charging voltage, so-called equal voltage IE.
Requires charging with eq.
（発明が解決しようとする課題） 上述した従来の無停電電源装置においては。(Problem to be solved by the invention) In the conventional uninterruptible power supply mentioned above.
順変換器１，２の出力電圧Ｅｒｆよりも、蓄電池５を充
電する際の浮動電圧Ｅ ｆ ｖ均等電圧Ｅｅｑの方が高
いために、順変換器１，２の出力を利用して蓄電池５を
充電することができない。そのため専用の充電器８を必
要とし、装置の回路構成が複雑になるという問題点があ
った−０
本発明は、上記従来技術の欠点を解決するためになされ
たものであり、専用の充電器を必要とせずに蓄電池を充
電することのできる無停電電源装置を提供することを目
的とする。Since the floating voltage E f v equal voltage Eeq when charging the storage battery 5 is higher than the output voltage Erf of the forward converters 1 and 2, the output of the forward converters 1 and 2 is used to charge the storage battery 5. Unable to charge. Therefore, there was a problem that a dedicated charger 8 was required and the circuit configuration of the device became complicated. An object of the present invention is to provide an uninterruptible power supply device that can charge a storage battery without the need for.
（課題を解決するための手段）
交流入力を直流に変換する順変換器と、順変換器からの
直流を交流に変換して負荷に給電する逆変換器と。(Means for solving the problem) A forward converter that converts AC input to DC, and an inverse converter that converts the DC from the forward converter to AC and supplies power to the load.
交流入力停電時に逆変換器への直流電力を供給する蓄電
池と。A storage battery that supplies DC power to the inverter during an AC input power outage.
順変換器の出力と予め設定された充電電圧との差の電圧
を順変換器の出力により蓄電池を充電する直流電圧補償
器と、
を備えたことを特徴とするものである。The present invention is characterized by comprising: a DC voltage compensator that charges a storage battery with the voltage difference between the output of the forward converter and a preset charging voltage using the output of the forward converter.
（作用）
このように構成されたものにおいて、蓄電池の充電時に
は、直流電圧補償装置は、予め設定された浮動充電電圧
又は均等充電電圧と順変換器の出力電圧とを比較し、位
相制御により電圧の差を補償して順変換器出力による蓄
電池の充電を行なつ・
（実施例）
本発明の実施例を第１図により説明する。(Function) In the device configured as described above, when charging the storage battery, the DC voltage compensator compares a preset floating charging voltage or equal charging voltage with the output voltage of the forward converter, and adjusts the voltage by phase control. The storage battery is charged by the output of the forward converter by compensating for the difference between the two. (Example) An example of the present invention will be described with reference to FIG.
１．２は交流入力を変換する順変換器、３２４は順変換
器からの直流入力を交流に変換する逆変換器である。1.2 is a forward converter that converts AC input, and 324 is an inverse converter that converts DC input from the forward converter into AC.
５は蓄電池であり、交流入力停電時に各逆変換器３．４
に直流電力を給電する。5 is a storage battery, and each inverter 3.4 at the time of an AC input power outage.
Supplies DC power to the
６．７はサイリスタスイッチであり、交流入力停電時に
オンすることにより、蓄電池５を逆変換器３．４の入力
側に接続する。6.7 is a thyristor switch, which connects the storage battery 5 to the input side of the inverter 3.4 by turning on at the time of an AC input power outage.
９は直流電圧補償器であり、順変換器１，２の出力を電
圧補償して蓄電池５に充電を行なう。また、１０、１１
はダイオードであり、順変換器１，２の出力側で事故が
発生したときに相互に影響を与えないようにするために
、直流電圧補償器９と順変換器１，２間にそれぞれ挿入
されている。Reference numeral 9 denotes a DC voltage compensator, which voltage-compensates the outputs of the forward converters 1 and 2 and charges the storage battery 5. Also, 10, 11
are diodes, which are inserted between the DC voltage compensator 9 and the forward converters 1 and 2, respectively, in order to prevent mutual influence when an accident occurs on the output sides of the forward converters 1 and 2. ing.
次にこのように構成された無停電電源装置の動作を説明
する。Next, the operation of the uninterruptible power supply configured as described above will be explained.
蓄電池５に通常の充電をする場合、すなわち浮動充電電
圧Ｅｆで蓄電池５を充電する場合には、直流電圧補償器
９は順変換器１，２の出力電圧Ｅｒｆと予め設定された
浮動充電電圧Ｅｆを比較してＥｆ Ｅｒｆ＝△Ｅ、な
る電圧を交流入力の位相制御により発生する。このため
、蓄電池５は、浮動充電電圧Ｅｆで充電される。When charging the storage battery 5 normally, that is, when charging the storage battery 5 with the floating charging voltage Ef, the DC voltage compensator 9 uses the output voltage Erf of the forward converters 1 and 2 and the preset floating charging voltage Ef. By comparing Ef Erf=ΔE, a voltage is generated by controlling the phase of the AC input. Therefore, the storage battery 5 is charged with the floating charging voltage Ef.
また、蓄電池に均等電圧Ｅθ９で充電する場合には、直
流電圧補償器９は順変換器１，２の出力電圧Ｅｒｆと予
め設定された均等電圧ＥｅＱを比較してＥｅｑ Ｅｒ
ｆ”△Ｅｆなる電圧を交流入力の位相制御により発生す
る。このため、蓄電池５は、均等充電電圧ＥｅＱで充電
される。In addition, when charging the storage battery with the equal voltage Eθ9, the DC voltage compensator 9 compares the output voltage Erf of the forward converters 1 and 2 with a preset equal voltage EeQ and calculates Eeq Er.
A voltage f''ΔEf is generated by phase control of the AC input. Therefore, the storage battery 5 is charged with the equal charging voltage EeQ.
交流入力停電時には、サイリスクスイッチ６゜７を導通
させて、蓄電池５から逆変換器３，４に直流電力を供給
する。In the event of an AC input power outage, the sirisk switch 6°7 is turned on to supply DC power from the storage battery 5 to the inverters 3 and 4.
以上説明したように本発明によれば、順変換器の出力で
蓄電池を充電することが可能となるので専用の充電器を
必要としない無停電電源装置を提供することができる。As explained above, according to the present invention, it is possible to charge the storage battery with the output of the forward converter, so it is possible to provide an uninterruptible power supply that does not require a dedicated charger.
第１図は本発明による無停電電源装置の実施例を示すブ
ロック図であり、第２図は従来の無停電電源装置を示す
ブロック図である。
１．２・・順変換器、 ３，４・・−逆変換器、５・・
・蓄電池、 ６，７・・サイリスタスイッチ、９・・・
直流電圧補償器。
代理人 弁理士 則 近 憲 佑FIG. 1 is a block diagram showing an embodiment of an uninterruptible power supply according to the present invention, and FIG. 2 is a block diagram showing a conventional uninterruptible power supply. 1.2...forward converter, 3,4...-inverse converter, 5...
・Storage battery, 6, 7... Thyristor switch, 9...
DC voltage compensator. Agent Patent Attorney Noriyuki Chika
Claims (1)
変換器と、 交流入力停電時に逆変換器への直流電力を供給する蓄電
池と、 順変換器の出力と予め設定された充電電圧との差の電圧
を順変換器の出力により蓄電池を充電する直流電圧補償
器と、 を有する無停電電源装置。[Scope of Claims] A forward converter that converts AC input to DC, an inverse converter that converts the DC from the forward converter to AC and supplies power to a load, and DC power to the inverse converter in the event of an AC input power outage. An uninterruptible power supply device comprising: a storage battery that supplies a voltage; and a DC voltage compensator that charges the storage battery with a voltage difference between the output of the forward converter and a preset charging voltage using the output of the forward converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2233341A JPH04117142A (en) | 1990-09-05 | 1990-09-05 | Uninterruptible power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2233341A JPH04117142A (en) | 1990-09-05 | 1990-09-05 | Uninterruptible power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04117142A true JPH04117142A (en) | 1992-04-17 |
Family
ID=16953634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2233341A Pending JPH04117142A (en) | 1990-09-05 | 1990-09-05 | Uninterruptible power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04117142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010206856A (en) * | 2009-02-27 | 2010-09-16 | Fuji Electric Systems Co Ltd | Uninterruptible power supply system having common battery and uninterruptible power supply device therefor |
-
1990
- 1990-09-05 JP JP2233341A patent/JPH04117142A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010206856A (en) * | 2009-02-27 | 2010-09-16 | Fuji Electric Systems Co Ltd | Uninterruptible power supply system having common battery and uninterruptible power supply device therefor |
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