JPH0223032A - Parallel operation control system - Google Patents
Parallel operation control systemInfo
- Publication number
- JPH0223032A JPH0223032A JP63169731A JP16973188A JPH0223032A JP H0223032 A JPH0223032 A JP H0223032A JP 63169731 A JP63169731 A JP 63169731A JP 16973188 A JP16973188 A JP 16973188A JP H0223032 A JPH0223032 A JP H0223032A
- Authority
- JP
- Japan
- Prior art keywords
- power
- unit
- cpu
- operated
- parallel
- 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
- 230000007423 decrease Effects 0.000 claims abstract description 10
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XEBWQGVWTUSTLN-UHFFFAOYSA-M phenylmercury acetate Chemical compound CC(=O)O[Hg]C1=CC=CC=C1 XEBWQGVWTUSTLN-UHFFFAOYSA-M 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Direct Current Feeding And Distribution (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は並列運転制御方式に関するもので、さらに詳し
く言えば、複数台のユニットが並列接続されてなる電源
装置の信頼性向上に関するものである・
従来技術とその問題点
蓄電池を充電しながら負荷に直流出力を供給する直流電
源装置や、インバータなどの交流電源装置は、負荷の省
電力化、装置の小型化要求により、負荷電流の増減に対
応して装置内で並列運転するユ＝、）数を増減させる方
式が昔及してきている。このような方式は、負荷電流が
増加し、第１のユニットの出力電流が所定値以上になる
と、第２のユニットを始動させて２台のユニットを並列
運転させ、負荷電流が一つのユニットの出力電流の所定
値以下になると、第２のユニットを停止させ、第１のユ
ニットの単機運転に切り換えるもので、負荷電流の最大
値に見合うだけのユニット数が用意されている。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a parallel operation control method, and more specifically, to improving the reliability of a power supply device in which a plurality of units are connected in parallel. Technology and its problems DC power supplies that supply DC output to loads while charging storage batteries, and AC power supplies such as inverters, cannot respond to increases or decreases in load current due to demands for power saving of loads and miniaturization of devices. A method of increasing or decreasing the number of units operated in parallel within a device has been in use for a long time. In this type of system, when the load current increases and the output current of the first unit exceeds a predetermined value, the second unit is started and the two units are operated in parallel, so that the load current increases when the output current of the first unit exceeds a predetermined value. When the output current falls below a predetermined value, the second unit is stopped and the first unit is switched to single unit operation, and the number of units that corresponds to the maximum value of the load current is prepared.
ところで、上記の如き方式では、負荷電流が一つのユニ
ットの出力電流の所定値以下であれば、第１のユ＝、）
の単機運転が継続されることになり、継続使用によって
第１のユニットのみが信頼性を低下させるという欠点が
あった。By the way, in the above method, if the load current is less than the predetermined value of the output current of one unit, the first unit =,)
However, the reliability of only the first unit deteriorates due to continued use.
また負荷電流の増加時のみ運転されるユニットは、運転
時間が短いので、その時間に応じて信頼性は向上するも
のの、負荷電流が少ない場合にはそのユニットは運転さ
れない。従って故障があっても発見されず、かえって装
置の信頼性を低下させる原因になっていた。さらに停電
が発生して復電すると、運転されているユ＝、）の安定
した動作モードが強制的に変化させられ、信頼性を低下
させる原因になっていた。Furthermore, since a unit that is operated only when the load current increases has a short operation time, the reliability improves according to the time, but when the load current is small, the unit is not operated. Therefore, even if there is a failure, it is not detected, which causes a decrease in the reliability of the device. Furthermore, when a power outage occurs and the power is restored, the stable operating mode of the units being operated is forcibly changed, causing a decrease in reliability.
発明の目的
本発明は上記欠点を解消するもので、停電が検出されて
復電した後は、停電前に運転されていたユニットと異る
ユニットと運転させることにより、装置の信頼性を向上
させることを目的とする。Purpose of the Invention The present invention solves the above-mentioned drawbacks. After a power outage is detected and the power is restored, the reliability of the device is improved by operating a unit different from the unit that was operating before the power outage. The purpose is to
発明の構成
本発明の並列運転制御方式は、負荷電流の増減に対応し
て並列運転されるユ＝ツ）数が増減される方式の電源装
置内に、少なくとも停電を検出する機能を有するＣＰＵ
を設け、前記機能により停電が検出されて復電した後は
、前記ＣＰＵにより停電前に運転されていたユ＝、）と
興るユニットを運転させるものである。Structure of the Invention The parallel operation control method of the present invention includes a CPU having at least a function of detecting a power outage in a power supply device of a type in which the number of units operated in parallel is increased or decreased in response to an increase or decrease in load current.
After a power outage is detected by the function and the power is restored, the CPU causes the unit that was operating before the power outage to operate.
実施例
以下実施例により説明する。第１図は本発明の並列運転
制御方式のプマック図で、入力端子１に交流を受電し、
スイッチ２を介して並列運転される第１〜第３の帖流器
二ニツ）３−１゜３−２．３−３により直流に変換され
、分流器４を介して蓄電池５を充電するとともに、出力
端子６に接続される負荷に直流電力を供給するものであ
る。このような直流電源装置では、分流器４に流れる負
荷電流値を検出し、その値がたとえば第１の整流器ユニ
ット３−１の許容出力電流値の９０噂になると、第２の
整流器ユニット３−２を始動させて２台のユニットを並
列運転させ、その後分流器４に流れる負荷電流値がたと
えば１台のユニットの許容出力電流値の８０％に低下す
ると、第２の整流器ユニット５−２を停止させて第１の
整流器ユニット３−１の単独運転にする構成である。第
１図における７は上記のような制御を行うとともに、停
電検出信号８が入力されることにより、停電が検出され
、復電後は停電前に運転されていたユニットと異るユニ
ットを運転させる機能を備えたＣＰＵである。このよう
な構成としたことにより、運転されているユニットの安
定した動作モードが強制的に変化させられることはなく
なり、信頼性の低下が防止できる。EXAMPLES The present invention will be explained below using examples. Figure 1 is a PMAC diagram of the parallel operation control method of the present invention, in which AC power is received at input terminal 1,
The first to third current transformers (2) 3-1, 3-2, and 3-3, which are operated in parallel via the switch 2, are converted to direct current, and are charged to the storage battery 5 via the current shunt 4. , which supplies DC power to the load connected to the output terminal 6. In such a DC power supply, the value of the load current flowing through the shunt 4 is detected, and when the value reaches 90, which is the allowable output current value of the first rectifier unit 3-1, the second rectifier unit 3-1 is detected. 2 to operate the two units in parallel, and then when the load current value flowing through the shunt 4 drops to, for example, 80% of the allowable output current value of one unit, the second rectifier unit 5-2 is started. The configuration is such that the first rectifier unit 3-1 is stopped and the first rectifier unit 3-1 is operated independently. 7 in Fig. 1 performs the above-mentioned control, and when a power outage detection signal 8 is input, a power outage is detected, and after the power is restored, a unit different from the unit that was operating before the power outage is operated. It is a CPU with functions. With this configuration, the stable operation mode of the unit being operated is not forcibly changed, and a decrease in reliability can be prevented.
次に第２図のように、各ユニットに分流器４−１．４−
２．４−３を設け、スイッチ２が投入され、分流器４−
１ 、４−２ 、４−５に負荷電流が流れたことが検出
されると始動し、各ユニットの運転時間を積算する機能
を付加させ、前記機能により停電が検出されて復電した
後は、最も運転時間の少ないユニットから順次動作な切
り換えるようにしたものである。このような構成とした
ことにより、運転時間の短かいユニットを運転させるこ
とができる。Next, as shown in Figure 2, each unit has a flow divider 4-1.4-
2.4-3 is provided, switch 2 is turned on, and the shunt 4-
1, 4-2, and 4-5 when it is detected that the load current has flowed, a function is added to integrate the operating time of each unit, and after a power failure is detected by the function and the power is restored, , the operation is switched sequentially starting from the unit that has been in operation for the least amount of time. With such a configuration, it is possible to operate a unit with a short operating time.
上記実施例では直流電源装置について説明したが、無停
電電源装置におけるインバータなどの交流電源装置につ
いても適用しうろことは言うまでもない。In the above embodiment, a DC power supply device has been described, but it goes without saying that the present invention can also be applied to an AC power supply device such as an inverter in an uninterruptible power supply device.
発明の効果
実施例において詳述した如く、本発明の並列運転制御方
式は並列運転されるユニットの運転時間をほぼ均等にす
ることができるので、装置の信頼性を向上させることが
できる。Effects of the Invention As described in detail in the embodiments, the parallel operation control method of the present invention can substantially equalize the operating times of the units operated in parallel, thereby improving the reliability of the device.
第１図、第２図は本発明の並列運転制御方式のプ四ツク
図である。1 and 2 are four-dimensional diagrams of the parallel operation control system of the present invention.
Claims (2)
ト数が増減される方式の電源装置内に、少なくとも停電
を検出する機能を有するＣＰＵを設け、前記機能により
停電が検出されて復電した後は、前記ＣＰＵにより停電
前に運転されていたユニットと異るユニットを運転させ
ることを特徴とする並列運転制御方式。(1) A CPU that has at least a function to detect a power outage is installed in a power supply device that increases or decreases the number of units operated in parallel in response to an increase or decrease in load current, and the function detects a power outage and restores power. After that, the CPU causes a unit different from the unit that was being operated before the power outage to be operated.
ト数が増減される方式の電源装置内に、各ユニットの運
転時間を積算する機能と停電を検出する機能とを有する
ＣＰＵを設け、前記機能により停電が検出されて復電し
た後は、前記ＣＰＵにより運転時間の最も少ないユニッ
トから順次動作を切り換えることを特徴とする並列運転
制御方式。(2) A CPU having a function of accumulating the operating time of each unit and a function of detecting a power outage is provided in a power supply device of a type in which the number of units operated in parallel is increased or decreased in response to an increase or decrease in load current, A parallel operation control system characterized in that, after a power outage is detected by the function and the power is restored, the CPU sequentially switches operations starting from the unit that has been operating for the least amount of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63169731A JP2659758B2 (en) | 1988-07-07 | 1988-07-07 | Parallel operation control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63169731A JP2659758B2 (en) | 1988-07-07 | 1988-07-07 | Parallel operation control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0223032A true JPH0223032A (en) | 1990-01-25 |
| JP2659758B2 JP2659758B2 (en) | 1997-09-30 |
Family
ID=15891807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63169731A Expired - Fee Related JP2659758B2 (en) | 1988-07-07 | 1988-07-07 | Parallel operation control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2659758B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006118315A1 (en) * | 2005-05-02 | 2006-11-09 | Toyota Jidosha Kabushiki Kaisha | Polyphase voltage converting apparatus and vehicle |
| CN102372197A (en) * | 2010-08-12 | 2012-03-14 | 上海三菱电梯有限公司 | Elevator control device |
| JP2012161208A (en) * | 2011-02-02 | 2012-08-23 | Ntt Facilities Inc | Power supply device and power supply control method |
| JP2015092816A (en) * | 2014-11-28 | 2015-05-14 | 日本電気株式会社 | Power system, power control method, power control device and program |
-
1988
- 1988-07-07 JP JP63169731A patent/JP2659758B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006118315A1 (en) * | 2005-05-02 | 2006-11-09 | Toyota Jidosha Kabushiki Kaisha | Polyphase voltage converting apparatus and vehicle |
| CN102372197A (en) * | 2010-08-12 | 2012-03-14 | 上海三菱电梯有限公司 | Elevator control device |
| JP2012161208A (en) * | 2011-02-02 | 2012-08-23 | Ntt Facilities Inc | Power supply device and power supply control method |
| JP2015092816A (en) * | 2014-11-28 | 2015-05-14 | 日本電気株式会社 | Power system, power control method, power control device and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2659758B2 (en) | 1997-09-30 |
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